openstack-manuals/doc/high-availability-guide/locale/zh_TW.po

# 
# Translators:
msgid ""
msgstr ""
"Project-Id-Version: OpenStack Manuals\n"
"POT-Creation-Date: 2014-04-19 04:10+0000\n"
"PO-Revision-Date: 2014-04-18 18:25+0000\n"
"Last-Translator: openstackjenkins <jenkins@openstack.org>\n"
"Language-Team: Chinese (Taiwan) (http://www.transifex.com/projects/p/openstack/language/zh_TW/)\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Language: zh_TW\n"
"Plural-Forms: nplurals=1; plural=0;\n"

#: ./doc/high-availability-guide/ha-guide-docinfo.xml4(firstname)
#: ./doc/high-availability-guide/bk-ha-guide.xml8(firstname)
msgid "Florian"
msgstr ""

#: ./doc/high-availability-guide/ha-guide-docinfo.xml5(surname)
#: ./doc/high-availability-guide/bk-ha-guide.xml9(surname)
msgid "Haas"
msgstr ""

#: ./doc/high-availability-guide/ha-guide-docinfo.xml7(email)
#: ./doc/high-availability-guide/bk-ha-guide.xml11(email)
msgid "florian@hastexo.com"
msgstr ""

#: ./doc/high-availability-guide/ha-guide-docinfo.xml9(orgname)
#: ./doc/high-availability-guide/bk-ha-guide.xml13(orgname)
msgid "hastexo"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml5(title)
msgid "OpenStack High Availability Guide"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml17(year)
msgid "2012"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml18(year)
msgid "2013"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml19(holder)
msgid "OpenStack Contributors"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml21(releaseinfo)
msgid "current"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml22(productname)
msgid "OpenStack"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml26(remark)
msgid "Copyright details are filled in by the template."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml31(date)
msgid "2012-01-16"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml35(para)
msgid "Organizes guide based on cloud controller and compute nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml41(date)
msgid "2012-05-24"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml45(para)
msgid "Begin trunk designation."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml54(title)
msgid "Introduction to OpenStack High Availability"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml56(simpara)
msgid "High Availability systems seek to minimize two things:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml59(simpara)
msgid ""
"<emphasis role=\"strong\">System downtime</emphasis> — occurs when a "
"<emphasis>user-facing</emphasis> service is unavailable beyond a specified "
"maximum amount of time, and"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml63(simpara)
msgid ""
"<emphasis role=\"strong\">Data loss</emphasis> — accidental deletion or "
"destruction of data."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml67(simpara)
msgid ""
"Most high availability systems guarantee protection against system downtime "
"and data loss only in the event of a single failure. However, they are also "
"expected to protect against cascading failures, where a single failure "
"deteriorates into a series of consequential failures."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml68(simpara)
msgid ""
"A crucial aspect of high availability is the elimination of single points of"
" failure (SPOFs). A SPOF is an individual piece of equipment or software "
"which will cause system downtime or data loss if it fails. In order to "
"eliminate SPOFs, check that mechanisms exist for redundancy of:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml71(simpara)
msgid "Network components, such as switches and routers"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml76(simpara)
msgid "Applications and automatic service migration"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml81(simpara)
msgid "Storage components"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml86(simpara)
msgid "Facility services such as power, air conditioning, and fire protection"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml91(simpara)
msgid ""
"Most high availability systems will fail in the event of multiple "
"independent (non-consequential) failures. In this case, most systems will "
"protect data over maintaining availability."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml92(simpara)
msgid ""
"High-availability systems typically achieve uptime of 99.99% or more, which "
"roughly equates to less than an hour of cumulative downtime per year. In "
"order to achieve this, high availability systems should keep recovery times "
"after a failure to about one to two minutes, sometimes significantly less."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml93(simpara)
msgid ""
"OpenStack currently meets such availability requirements for its own "
"infrastructure services, meaning that an uptime of 99.99% is feasible for "
"the OpenStack infrastructure proper. However, OpenStack "
"<emphasis>does</emphasis><emphasis>not</emphasis> guarantee 99.99% "
"availability for individual guest instances."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml94(simpara)
msgid ""
"Preventing single points of failure can depend on whether or not a service "
"is stateless."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml97(title)
msgid "Stateless vs. Stateful services"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml99(simpara)
msgid ""
"A stateless service is one that provides a response after your request, and "
"then requires no further attention. To make a stateless service highly "
"available, you need to provide redundant instances and load balance them. "
"OpenStack services that are stateless include nova-api, nova-conductor, "
"glance-api, keystone-api, neutron-api and nova-scheduler."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml100(simpara)
msgid ""
"A stateful service is one where subsequent requests to the service depend on"
" the results of the first request. Stateful services are more difficult to "
"manage because a single action typically involves more than one request, so "
"simply providing additional instances and load balancing will not solve the "
"problem. For example, if the Horizon user interface reset itself every time "
"you went to a new page, it wouldn’t be very useful. OpenStack services that "
"are stateful include the OpenStack database and message queue."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml101(simpara)
msgid ""
"Making stateful services highly available can depend on whether you choose "
"an active/passive or active/active configuration."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml105(title)
msgid "Active/Passive"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml107(simpara)
msgid ""
"In an active/passive configuration, systems are set up to bring additional "
"resources online to replace those that have failed. For example, OpenStack "
"would write to the main database while maintaining a disaster recovery "
"database that can be brought online in the event that the main database "
"fails."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml108(simpara)
msgid ""
"Typically, an active/passive installation for a stateless service would "
"maintain a redundant instance that can be brought online when required. "
"Requests are load balanced using a virtual IP address and a load balancer "
"such as HAProxy."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml109(simpara)
msgid ""
"A typical active/passive installation for a stateful service maintains a "
"replacement resource that can be brought online when required. A separate "
"application (such as Pacemaker or Corosync) monitors these services, "
"bringing the backup online as necessary."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml113(title)
msgid "Active/Active"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml115(simpara)
msgid ""
"In an active/active configuration, systems also use a backup but will manage"
" both the main and redundant systems concurrently. This way, if there is a "
"failure the user is unlikely to notice. The backup system is already online,"
" and takes on increased load while the main system is fixed and brought back"
" online."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml116(simpara)
msgid ""
"Typically, an active/active installation for a stateless service would "
"maintain a redundant instance, and requests are load balanced using a "
"virtual IP address and a load balancer such as HAProxy."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml117(simpara)
msgid ""
"A typical active/active installation for a stateful service would include "
"redundant services with all instances having an identical state. For "
"example, updates to one instance of a database would also update all other "
"instances. This way a request to one instance is the same as a request to "
"any other. A load balancer manages the traffic to these systems, ensuring "
"that operational systems always handle the request."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml118(simpara)
msgid ""
"These are some of the more common ways to implement these high availability "
"architectures, but they are by no means the only ways to do it. The "
"important thing is to make sure that your services are redundant, and "
"available; how you achieve that is up to you. This document will cover some "
"of the more common options for highly available systems."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml123(title)
msgid "HA Using Active/Passive"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml127(title)
msgid "The Pacemaker Cluster Stack"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml129(simpara)
msgid ""
"OpenStack infrastructure high availability relies on the <link "
"href=\"http://www.clusterlabs.org\">Pacemaker</link> cluster stack, the "
"state-of-the-art high availability and load balancing stack for the Linux "
"platform. Pacemaker is storage and application-agnostic, and is in no way "
"specific to OpenStack."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml134(simpara)
msgid ""
"Pacemaker relies on the <link "
"href=\"http://www.corosync.org\">Corosync</link> messaging layer for "
"reliable cluster communications. Corosync implements the Totem single-ring "
"ordering and membership protocol. It also provides UDP and InfiniBand based "
"messaging, quorum, and cluster membership to Pacemaker."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml139(simpara)
msgid ""
"Pacemaker interacts with applications through <emphasis>resource "
"agents</emphasis> (RAs), of which it supports over 70 natively. Pacemaker "
"can also easily use third-party RAs. An OpenStack high-availability "
"configuration uses existing native Pacemaker RAs (such as those managing "
"MySQL databases or virtual IP addresses), existing third-party RAs (such as "
"for RabbitMQ), and native OpenStack RAs (such as those managing the "
"OpenStack Identity and Image Services)."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml148(title)
msgid "Installing Packages"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml150(simpara)
msgid ""
"On any host that is meant to be part of a Pacemaker cluster, you must first "
"establish cluster communications through the Corosync messaging layer. This "
"involves installing the following packages (and their dependencies, which "
"your package manager will normally install automatically):"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml157(simpara)
msgid ""
"<literal>pacemaker</literal> Note that the crm shell should be downloaded "
"separately."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml162(literal)
msgid "crmsh"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml167(literal)
msgid "corosync"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml172(literal)
msgid "cluster-glue"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml176(simpara)
msgid ""
"<literal>fence-agents</literal> (Fedora only; all other distributions use "
"fencing agents from <literal>cluster-glue</literal>)"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml182(literal)
msgid "resource-agents"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml189(title)
msgid "Setting up Corosync"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml191(simpara)
msgid ""
"Besides installing the <literal>corosync</literal> package, you will also "
"have to create a configuration file, stored in "
"<literal>/etc/corosync/corosync.conf</literal>. Most distributions ship an "
"example configuration file (<literal>corosync.conf.example</literal>) as "
"part of the documentation bundled with the <literal>corosync</literal> "
"package. An example Corosync configuration file is shown below:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml199(title)
msgid "Corosync configuration file (<literal>corosync.conf</literal>)"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml273(para)
msgid ""
"The <literal>token</literal> value specifies the time, in milliseconds, "
"during which the Corosync token is expected to be transmitted around the "
"ring. When this timeout expires, the token is declared lost, and after "
"<literal>token_retransmits_before_loss_const</literal> lost tokens the non-"
"responding <emphasis>processor</emphasis> (cluster node) is declared dead. "
"In other words, <literal>token</literal> × "
"<literal>token_retransmits_before_loss_const</literal> is the maximum time a"
" node is allowed to not respond to cluster messages before being considered "
"dead. The default for <literal>token</literal> is 1000 (1 second), with 4 "
"allowed retransmits. These defaults are intended to minimize failover times,"
" but can cause frequent \"false alarms\" and unintended failovers in case of"
" short network interruptions. The values used here are safer, albeit with "
"slightly extended failover times."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml289(para)
msgid ""
"With <literal>secauth</literal> enabled, Corosync nodes mutually "
"authenticate using a 128-byte shared secret stored in "
"<literal>/etc/corosync/authkey</literal>, which may be generated with the "
"<literal>corosync-keygen</literal> utility. When using "
"<literal>secauth</literal>, cluster communications are also encrypted."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml297(para)
msgid ""
"In Corosync configurations using redundant networking (with more than one "
"<literal>interface</literal>), you must select a Redundant Ring Protocol "
"(RRP) mode other than <literal>none</literal>. <literal>active</literal> is "
"the recommended RRP mode."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml304(para)
msgid ""
"There are several things to note about the recommended interface "
"configuration:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml310(simpara)
msgid ""
"The <literal>ringnumber</literal> must differ between all configured "
"interfaces, starting with 0."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml316(simpara)
msgid ""
"The <literal>bindnetaddr</literal> is the <emphasis>network</emphasis> "
"address of the interfaces to bind to. The example uses two network addresses"
" of <literal>/24</literal> IPv4 subnets."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml322(simpara)
msgid ""
"Multicast groups (<literal>mcastaddr</literal>) <emphasis>must "
"not</emphasis> be reused across cluster boundaries. In other words, no two "
"distinct clusters should ever use the same multicast group. Be sure to "
"select multicast addresses compliant with <link "
"href=\"http://www.ietf.org/rfc/rfc2365.txt\">RFC 2365, \"Administratively "
"Scoped IP Multicast\"</link>."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml331(simpara)
msgid ""
"For firewall configurations, note that Corosync communicates over UDP only, "
"and uses <literal>mcastport</literal> (for receives) and "
"<literal>mcastport</literal>-1 (for sends)."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml340(para)
msgid ""
"The <literal>service</literal> declaration for the "
"<literal>pacemaker</literal> service may be placed in the "
"<literal>corosync.conf</literal> file directly, or in its own separate file,"
" <literal>/etc/corosync/service.d/pacemaker</literal>."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml347(simpara)
msgid ""
"Once created, the <literal>corosync.conf</literal> file (and the "
"<literal>authkey</literal> file if the <literal>secauth</literal> option is "
"enabled) must be synchronized across all cluster nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml353(title)
msgid "Starting Corosync"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml355(simpara)
msgid ""
"Corosync is started as a regular system service. Depending on your "
"distribution, it may ship with a LSB (System V style) init script, an "
"upstart job, or a systemd unit file. Either way, the service is usually "
"named <literal>corosync</literal>:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml361(simpara)
msgid "<literal>/etc/init.d/corosync start</literal> (LSB)"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml365(simpara)
msgid "<literal>service corosync start</literal> (LSB, alternate)"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml369(simpara)
msgid "<literal>start corosync</literal> (upstart)"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml373(simpara)
msgid "<literal>systemctl start corosync</literal> (systemd)"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml377(simpara)
msgid "You can now check the Corosync connectivity with two tools."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml378(simpara)
msgid ""
"The <literal>corosync-cfgtool</literal> utility, when invoked with the "
"<literal>-s</literal> option, gives a summary of the health of the "
"communication rings:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml389(simpara)
msgid ""
"The <literal>corosync-objctl</literal> utility can be used to dump the "
"Corosync cluster member list:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml398(simpara)
msgid ""
"You should see a <literal>status=joined</literal> entry for each of your "
"constituent cluster nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml403(title)
msgid "Starting Pacemaker"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml405(simpara)
msgid ""
"Once the Corosync services have been started, and you have established that "
"the cluster is communicating properly, it is safe to start "
"<literal>pacemakerd</literal>, the Pacemaker master control process:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml410(simpara)
msgid "<literal>/etc/init.d/pacemaker start</literal> (LSB)"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml414(simpara)
msgid "<literal>service pacemaker start</literal> (LSB, alternate)"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml418(simpara)
msgid "<literal>start pacemaker</literal> (upstart)"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml422(simpara)
msgid "<literal>systemctl start pacemaker</literal> (systemd)"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml426(simpara)
msgid ""
"Once Pacemaker services have started, Pacemaker will create a default empty "
"cluster configuration with no resources. You may observe Pacemaker’s status "
"with the <literal>crm_mon</literal> utility:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml443(title)
msgid "Setting basic cluster properties"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml445(simpara)
msgid ""
"Once your Pacemaker cluster is set up, it is recommended to set a few basic "
"cluster properties. To do so, start the <literal>crm</literal> shell and "
"change into the configuration menu by entering <literal>configure</literal>."
" Alternatively. you may jump straight into the Pacemaker configuration menu "
"by typing <literal>crm configure</literal> directly from a shell prompt."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml451(simpara)
msgid "Then, set the following properties:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml459(para)
msgid ""
"Setting <literal>no-quorum-policy=\"ignore\"</literal> is required in 2-node"
" Pacemaker clusters for the following reason: if quorum enforcement is "
"enabled, and one of the two nodes fails, then the remaining node can not "
"establish a <emphasis>majority</emphasis> of quorum votes necessary to run "
"services, and thus it is unable to take over any resources. The appropriate "
"workaround is to ignore loss of quorum in the cluster. This is safe and "
"necessary <emphasis>only</emphasis> in 2-node clusters. Do not set this "
"property in Pacemaker clusters with more than two nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml471(para)
msgid ""
"Setting <literal>pe-warn-series-max</literal>, <literal>pe-input-series-"
"max</literal> and <literal>pe-error-series-max</literal> to 1000 instructs "
"Pacemaker to keep a longer history of the inputs processed, and errors and "
"warnings generated, by its Policy Engine. This history is typically useful "
"in case cluster troubleshooting becomes necessary."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml480(para)
msgid ""
"Pacemaker uses an event-driven approach to cluster state processing. "
"However, certain Pacemaker actions occur at a configurable interval, "
"<literal>cluster-recheck-interval</literal>, which defaults to 15 minutes. "
"It is usually prudent to reduce this to a shorter interval, such as 5 or 3 "
"minutes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml489(simpara)
msgid ""
"Once you have made these changes, you may <literal>commit</literal> the "
"updated configuration."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml495(title)
msgid "Cloud Controller Cluster Stack"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml497(simpara)
msgid ""
"The Cloud Controller sits on the management network and needs to talk to all"
" other services."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml500(title)
msgid "Highly available MySQL"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml502(simpara)
msgid ""
"MySQL is the default database server used by many OpenStack services. Making"
" the MySQL service highly available involves"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml506(simpara)
msgid "configuring a DRBD device for use by MySQL,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml511(simpara)
msgid ""
"configuring MySQL to use a data directory residing on that DRBD device,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml517(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml763(simpara)
msgid ""
"selecting and assigning a virtual IP address (VIP) that can freely float "
"between cluster nodes,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml523(simpara)
msgid "configuring MySQL to listen on that IP address,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml528(simpara)
msgid ""
"managing all resources, including the MySQL daemon itself, with the "
"Pacemaker cluster manager."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml535(simpara)
msgid ""
"<link "
"href=\"http://codership.com/products/mysql_galera\">MySQL/Galera</link> is "
"an alternative method of configuring MySQL for high availability. It is "
"likely to become the preferred method of achieving MySQL high availability "
"once it has sufficiently matured. At the time of writing, however, the "
"Pacemaker/DRBD based approach remains the recommended one for OpenStack "
"environments."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml544(title)
#: ./doc/high-availability-guide/bk-ha-guide.xml793(title)
msgid "Configuring DRBD"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml546(simpara)
msgid ""
"The Pacemaker based MySQL server requires a DRBD resource from which it "
"mounts the <literal>/var/lib/mysql</literal> directory. In this example, the"
" DRBD resource is simply named <literal>mysql</literal>:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml551(title)
msgid ""
"<literal>mysql</literal> DRBD resource configuration "
"(<literal>/etc/drbd.d/mysql.res</literal>)"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml567(simpara)
msgid ""
"This resource uses an underlying local disk (in DRBD terminology, a "
"<emphasis>backing device</emphasis>) named "
"<literal>/dev/data/mysql</literal> on both cluster nodes, "
"<literal>node1</literal> and <literal>node2</literal>. Normally, this would "
"be an LVM Logical Volume specifically set aside for this purpose. The DRBD "
"<literal>meta-disk</literal> is <literal>internal</literal>, meaning DRBD-"
"specific metadata is being stored at the end of the <literal>disk</literal> "
"device itself. The device is configured to communicate between IPv4 "
"addresses 10.0.42.100 and 10.0.42.254, using TCP port 7700. Once enabled, it"
" will map to a local DRBD block device with the device minor number 0, that "
"is, <literal>/dev/drbd0</literal>."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml576(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml825(simpara)
msgid ""
"Enabling a DRBD resource is explained in detail in <link "
"href=\"http://www.drbd.org/users-guide-8.3/s-first-time-up.html\">the DRBD "
"User’s Guide</link>. In brief, the proper sequence of commands is this:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml584(para)
msgid ""
"Initializes DRBD metadata and writes the initial set of metadata to "
"<literal>/dev/data/mysql</literal>. Must be completed on both nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml590(para)
msgid ""
"Creates the <literal>/dev/drbd0</literal> device node, "
"<emphasis>attaches</emphasis> the DRBD device to its backing store, and "
"<emphasis>connects</emphasis> the DRBD node to its peer. Must be completed "
"on both nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml597(para)
#: ./doc/high-availability-guide/bk-ha-guide.xml846(para)
msgid ""
"Kicks off the initial device synchronization, and puts the device into the "
"<literal>primary</literal> (readable and writable) role. See <link "
"href=\"http://www.drbd.org/users-guide-8.3/ch-admin.html#s-roles\">Resource "
"roles</link> (from the DRBD User’s Guide) for a more detailed description of"
" the primary and secondary roles in DRBD. Must be completed <emphasis>on one"
" node only,</emphasis> namely the one where you are about to continue with "
"creating your filesystem."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml611(title)
#: ./doc/high-availability-guide/bk-ha-guide.xml860(title)
msgid "Creating a file system"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml613(simpara)
msgid ""
"Once the DRBD resource is running and in the primary role (and potentially "
"still in the process of running the initial device synchronization), you may"
" proceed with creating the filesystem for MySQL data. XFS is the generally "
"recommended filesystem:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml618(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml867(simpara)
msgid ""
"You may also use the alternate device path for the DRBD device, which may be"
" easier to remember as it includes the self-explanatory resource name:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml622(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml871(simpara)
msgid ""
"Once completed, you may safely return the device to the secondary role. Any "
"ongoing device synchronization will continue in the background:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml629(title)
msgid "Preparing MySQL for Pacemaker high availability"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml631(simpara)
msgid ""
"In order for Pacemaker monitoring to function properly, you must ensure that"
" MySQL’s database files reside on the DRBD device. If you already have an "
"existing MySQL database, the simplest approach is to just move the contents "
"of the existing <literal>/var/lib/mysql</literal> directory into the newly "
"created filesystem on the DRBD device."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml637(simpara)
msgid ""
"You must complete the next step while the MySQL database server is shut "
"down."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml643(simpara)
msgid ""
"For a new MySQL installation with no existing data, you may also run the "
"<literal>mysql_install_db</literal> command:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml648(simpara)
msgid ""
"Regardless of the approach, the steps outlined here must be completed on "
"only one cluster node."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml653(title)
msgid "Adding MySQL resources to Pacemaker"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml655(simpara)
msgid ""
"You may now proceed with adding the Pacemaker configuration for MySQL "
"resources. Connect to the Pacemaker cluster with <literal>crm "
"configure</literal>, and add the following cluster resources:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml691(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml925(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1124(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1217(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1378(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1452(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1496(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1537(simpara)
msgid "This configuration creates"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml694(simpara)
msgid ""
"<literal>p_ip_mysql</literal>, a virtual IP address for use by MySQL "
"(192.168.42.101),"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml699(simpara)
msgid ""
"<literal>p_fs_mysql</literal>, a Pacemaker managed filesystem mounted to "
"<literal>/var/lib/mysql</literal> on whatever node currently runs the MySQL "
"service,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml705(simpara)
msgid ""
"<literal>ms_drbd_mysql</literal>, the <emphasis>master/slave set</emphasis> "
"managing the <literal>mysql</literal> DRBD resource,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml710(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml944(simpara)
msgid ""
"a service <literal>group</literal> and <literal>order</literal> and "
"<literal>colocation</literal> constraints to ensure resources are started on"
" the correct nodes, and in the correct sequence."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml716(simpara)
msgid ""
"<literal>crm configure</literal> supports batch input, so you may copy and "
"paste the above into your live pacemaker configuration, and then make "
"changes as required. For example, you may enter <literal>edit "
"p_ip_mysql</literal> from the <literal>crm configure</literal> menu and edit"
" the resource to match your preferred virtual IP address."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml721(simpara)
msgid ""
"Once completed, commit your configuration changes by entering "
"<literal>commit</literal> from the <literal>crm configure</literal> menu. "
"Pacemaker will then start the MySQL service, and its dependent resources, on"
" one of your nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml727(title)
msgid "Configuring OpenStack services for highly available MySQL"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml729(simpara)
msgid ""
"Your OpenStack services must now point their MySQL configuration to the "
"highly available, virtual cluster IP address — rather than a MySQL server’s "
"physical IP address as you normally would."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml732(simpara)
msgid ""
"For OpenStack Image, for example, if your MySQL service IP address is "
"192.168.42.101 as in the configuration explained here, you would use the "
"following line in your OpenStack Image registry configuration file (<literal"
">glance-registry.conf</literal>):"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml737(simpara)
msgid ""
"No other changes are necessary to your OpenStack configuration. If the node "
"currently hosting your database experiences a problem necessitating service "
"failover, your OpenStack services may experience a brief MySQL interruption,"
" as they would in the event of a network hiccup, and then continue to run "
"normally."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml746(title)
msgid "Highly available RabbitMQ"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml748(simpara)
msgid ""
"RabbitMQ is the default AMQP server used by many OpenStack services. Making "
"the RabbitMQ service highly available involves:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml752(simpara)
msgid "configuring a DRBD device for use by RabbitMQ,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml757(simpara)
msgid ""
"configuring RabbitMQ to use a data directory residing on that DRBD device,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml769(simpara)
msgid "configuring RabbitMQ to listen on that IP address,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml774(simpara)
msgid ""
"managing all resources, including the RabbitMQ daemon itself, with the "
"Pacemaker cluster manager."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml781(simpara)
msgid ""
"There is an alternative method of configuring RabbitMQ for high "
"availability. That approach, known as <link "
"href=\"http://www.rabbitmq.com/ha.html\">active-active mirrored "
"queues</link>, happens to be the one preferred by the RabbitMQ developers — "
"however it has shown less than ideal consistency and reliability in "
"OpenStack clusters. Thus, at the time of writing, the Pacemaker/DRBD based "
"approach remains the recommended one for OpenStack environments, although "
"this may change in the near future as RabbitMQ active-active mirrored queues"
" mature."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml795(simpara)
msgid ""
"The Pacemaker based RabbitMQ server requires a DRBD resource from which it "
"mounts the <literal>/var/lib/rabbitmq</literal> directory. In this example, "
"the DRBD resource is simply named <literal>rabbitmq</literal>:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml800(title)
msgid ""
"<literal>rabbitmq</literal> DRBD resource configuration "
"(<literal>/etc/drbd.d/rabbitmq.res</literal>)"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml816(simpara)
msgid ""
"This resource uses an underlying local disk (in DRBD terminology, a "
"<emphasis>backing device</emphasis>) named "
"<literal>/dev/data/rabbitmq</literal> on both cluster nodes, "
"<literal>node1</literal> and <literal>node2</literal>. Normally, this would "
"be an LVM Logical Volume specifically set aside for this purpose. The DRBD "
"<literal>meta-disk</literal> is <literal>internal</literal>, meaning DRBD-"
"specific metadata is being stored at the end of the <literal>disk</literal> "
"device itself. The device is configured to communicate between IPv4 "
"addresses 10.0.42.100 and 10.0.42.254, using TCP port 7701. Once enabled, it"
" will map to a local DRBD block device with the device minor number 1, that "
"is, <literal>/dev/drbd1</literal>."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml833(para)
msgid ""
"Initializes DRBD metadata and writes the initial set of metadata to "
"<literal>/dev/data/rabbitmq</literal>. Must be completed on both nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml839(para)
msgid ""
"Creates the <literal>/dev/drbd1</literal> device node, "
"<emphasis>attaches</emphasis> the DRBD device to its backing store, and "
"<emphasis>connects</emphasis> the DRBD node to its peer. Must be completed "
"on both nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml862(simpara)
msgid ""
"Once the DRBD resource is running and in the primary role (and potentially "
"still in the process of running the initial device synchronization), you may"
" proceed with creating the filesystem for RabbitMQ data. XFS is generally "
"the recommended filesystem:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml878(title)
msgid "Preparing RabbitMQ for Pacemaker high availability"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml880(simpara)
msgid ""
"In order for Pacemaker monitoring to function properly, you must ensure that"
" RabbitMQ’s <literal>.erlang.cookie</literal> files are identical on all "
"nodes, regardless of whether DRBD is mounted there or not. The simplest way "
"of doing so is to take an existing <literal>.erlang.cookie</literal> from "
"one of your nodes, copying it to the RabbitMQ data directory on the other "
"node, and also copying it to the DRBD-backed filesystem."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml893(title)
msgid "Adding RabbitMQ resources to Pacemaker"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml895(simpara)
msgid ""
"You may now proceed with adding the Pacemaker configuration for RabbitMQ "
"resources. Connect to the Pacemaker cluster with <literal>crm "
"configure</literal>, and add the following cluster resources:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml928(simpara)
msgid ""
"<literal>p_ip_rabbitmp</literal>, a virtual IP address for use by RabbitMQ "
"(192.168.42.100),"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml933(simpara)
msgid ""
"<literal>p_fs_rabbitmq</literal>, a Pacemaker managed filesystem mounted to "
"<literal>/var/lib/rabbitmq</literal> on whatever node currently runs the "
"RabbitMQ service,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml939(simpara)
msgid ""
"<literal>ms_drbd_rabbitmq</literal>, the <emphasis>master/slave "
"set</emphasis> managing the <literal>rabbitmq</literal> DRBD resource,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml950(simpara)
msgid ""
"<literal>crm configure</literal> supports batch input, so you may copy and "
"paste the above into your live pacemaker configuration, and then make "
"changes as required. For example, you may enter <literal>edit "
"p_ip_rabbitmq</literal> from the <literal>crm configure</literal> menu and "
"edit the resource to match your preferred virtual IP address."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml955(simpara)
msgid ""
"Once completed, commit your configuration changes by entering "
"<literal>commit</literal> from the <literal>crm configure</literal> menu. "
"Pacemaker will then start the RabbitMQ service, and its dependent resources,"
" on one of your nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml961(title)
msgid "Configuring OpenStack services for highly available RabbitMQ"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml963(simpara)
msgid ""
"Your OpenStack services must now point their RabbitMQ configuration to the "
"highly available, virtual cluster IP address — rather than a RabbitMQ "
"server’s physical IP address as you normally would."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml966(simpara)
msgid ""
"For OpenStack Image, for example, if your RabbitMQ service IP address is "
"192.168.42.100 as in the configuration explained here, you would use the "
"following line in your OpenStack Image API configuration file (<literal"
">glance-api.conf</literal>):"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml971(simpara)
msgid ""
"No other changes are necessary to your OpenStack configuration. If the node "
"currently hosting your RabbitMQ experiences a problem necessitating service "
"failover, your OpenStack services may experience a brief RabbitMQ "
"interruption, as they would in the event of a network hiccup, and then "
"continue to run normally."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml981(title)
msgid "API Node Cluster Stack"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml983(simpara)
msgid ""
"The API node exposes OpenStack API endpoints onto external network "
"(Internet). It needs to talk to the Cloud Controller on the management "
"network."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml987(title)
msgid "Configure the VIP"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml989(simpara)
msgid ""
"First of all, we need to select and assign a virtual IP address (VIP) that "
"can freely float between cluster nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml990(simpara)
msgid ""
"This configuration creates <literal>p_ip_api</literal>, a virtual IP address"
" for use by the API node (192.168.42.103) :"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml997(title)
msgid "Highly available OpenStack Identity"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml999(simpara)
msgid ""
"OpenStack Identity is the Identity Service in OpenStack and used by many "
"services. Making the OpenStack Identity service highly available in active /"
" passive mode involves"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1003(simpara)
msgid "configuring OpenStack Identity to listen on the VIP address,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1008(simpara)
msgid "managing OpenStack Identity daemon with the Pacemaker cluster manager,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1013(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1102(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1194(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1280(simpara)
msgid "configuring OpenStack services to use this IP address."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1019(simpara)
msgid ""
"Here is the <link href=\"http://docs.openstack.org/trunk/install-"
"guide/install/apt/content/ch_installing-openstack-identity-"
"service.html\">documentation</link> for installing OpenStack Identity "
"service."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1023(title)
msgid "Adding OpenStack Identity resource to Pacemaker"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1025(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1114(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1206(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1292(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1368(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1441(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1485(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1526(simpara)
msgid "First of all, you need to download the resource agent to your system:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1031(simpara)
msgid ""
"You may now proceed with adding the Pacemaker configuration for OpenStack "
"Identity resource. Connect to the Pacemaker cluster with <literal>crm "
"configure</literal>, and add the following cluster resources:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1037(simpara)
msgid ""
"This configuration creates <literal>p_keystone</literal>, a resource for "
"managing the OpenStack Identity service."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1038(simpara)
msgid ""
"<literal>crm configure</literal> supports batch input, so you may copy and "
"paste the above into your live pacemaker configuration, and then make "
"changes as required. For example, you may enter <literal>edit "
"p_ip_keystone</literal> from the <literal>crm configure</literal> menu and "
"edit the resource to match your preferred virtual IP address."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1043(simpara)
msgid ""
"Once completed, commit your configuration changes by entering "
"<literal>commit</literal> from the <literal>crm configure</literal> menu. "
"Pacemaker will then start the OpenStack Identity service, and its dependent "
"resources, on one of your nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1049(title)
msgid "Configuring OpenStack Identity service"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1051(simpara)
msgid ""
"You need to edit your OpenStack Identity configuration file "
"(<literal>keystone.conf</literal>) and change the bind parameters:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1052(simpara)
msgid "On Havana:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1054(simpara)
msgid ""
"On Icehouse, the <literal>admin_bind_host</literal> option lets you use a "
"private network for the admin access."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1057(simpara)
msgid ""
"To be sure all data will be highly available, you should be sure that you "
"store everything in the MySQL database (which is also highly available):"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1067(title)
msgid ""
"Configuring OpenStack Services to use the Highly Available OpenStack "
"Identity"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1069(simpara)
msgid ""
"Your OpenStack services must now point their OpenStack Identity "
"configuration to the highly available, virtual cluster IP address — rather "
"than a OpenStack Identity server’s physical IP address as you normally "
"would."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1072(simpara)
msgid ""
"For example with OpenStack Compute, if your OpenStack Identity service IP "
"address is 192.168.42.103 as in the configuration explained here, you would "
"use the following line in your API configuration file (<literal>api-"
"paste.ini</literal>):"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1077(simpara)
msgid "You also need to create the OpenStack Identity Endpoint with this IP."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1078(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1342(simpara)
msgid ""
"NOTE : If you are using both private and public IP addresses, you should "
"create two Virtual IP addresses and define your endpoint like this:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1080(simpara)
msgid ""
"If you are using the Horizon Dashboard, you should edit the "
"<literal>local_settings.py</literal> file:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1086(title)
msgid "Highly available OpenStack Image API"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1088(simpara)
msgid ""
"OpenStack Image Service offers a service for discovering, registering, and "
"retrieving virtual machine images. Making the OpenStack Image API service "
"highly available in active / passive mode involves"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1092(simpara)
msgid "configuring OpenStack Image to listen on the VIP address,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1097(simpara)
msgid ""
"managing OpenStack Image API daemon with the Pacemaker cluster manager,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1108(simpara)
msgid ""
"Here is the <link href=\"http://docs.openstack.org/trunk/install-"
"guide/install/apt/content/ch_installing-openstack-"
"image.html\">documentation</link> for installing OpenStack Image API "
"service."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1112(title)
msgid "Adding OpenStack Image API resource to Pacemaker"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1118(simpara)
msgid ""
"You may now proceed with adding the Pacemaker configuration for OpenStack "
"Image API resource. Connect to the Pacemaker cluster with <literal>crm "
"configure</literal>, and add the following cluster resources:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1127(simpara)
msgid ""
"<literal>p_glance-api</literal>, a resource for manage OpenStack Image API "
"service"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1131(simpara)
msgid ""
"<literal>crm configure</literal> supports batch input, so you may copy and "
"paste the above into your live pacemaker configuration, and then make "
"changes as required. For example, you may enter <literal>edit p_ip_glance-"
"api</literal> from the <literal>crm configure</literal> menu and edit the "
"resource to match your preferred virtual IP address."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1136(simpara)
msgid ""
"Once completed, commit your configuration changes by entering "
"<literal>commit</literal> from the <literal>crm configure</literal> menu. "
"Pacemaker will then start the OpenStack Image API service, and its dependent"
" resources, on one of your nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1142(title)
msgid "Configuring OpenStack Image API service"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1144(simpara)
msgid "Edit <literal>/etc/glance/glance-api.conf</literal>:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1160(title)
msgid ""
"Configuring OpenStack Services to use High Available OpenStack Image API"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1162(simpara)
msgid ""
"Your OpenStack services must now point their OpenStack Image API "
"configuration to the highly available, virtual cluster IP address — rather "
"than an OpenStack Image API server’s physical IP address as you normally "
"would."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1165(simpara)
msgid ""
"For OpenStack Compute, for example, if your OpenStack Image API service IP "
"address is 192.168.42.104 as in the configuration explained here, you would "
"use the following line in your <literal>nova.conf</literal> file:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1169(simpara)
msgid "You need also to create the OpenStack Image API Endpoint with this IP."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1171(simpara)
msgid ""
"If you are using both private and public IP addresses, you should create two"
" Virtual IP addresses and define your endpoint like this:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1178(title)
msgid "Highly available Cinder API"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1180(simpara)
msgid ""
"Cinder is the block storage service in OpenStack. Making the Cinder API "
"service highly available in active / passive mode involves"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1184(simpara)
msgid "configuring Cinder to listen on the VIP address,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1189(simpara)
msgid "managing Cinder API daemon with the Pacemaker cluster manager,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1200(simpara)
msgid ""
"Here is the <link href=\"http://docs.openstack.org/trunk/install-"
"guide/install/apt/content/cinder-install.html\">documentation</link> for "
"installing Cinder service."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1204(title)
msgid "Adding Cinder API resource to Pacemaker"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1210(simpara)
msgid ""
"You may now proceed with adding the Pacemaker configuration for Cinder API "
"resource. Connect to the Pacemaker cluster with <literal>crm "
"configure</literal>, and add the following cluster resources:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1220(simpara)
msgid ""
"<literal>p_cinder-api</literal>, a resource for manage Cinder API service"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1224(simpara)
msgid ""
"<literal>crm configure</literal> supports batch input, so you may copy and "
"paste the above into your live pacemaker configuration, and then make "
"changes as required. For example, you may enter <literal>edit p_ip_cinder-"
"api</literal> from the <literal>crm configure</literal> menu and edit the "
"resource to match your preferred virtual IP address."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1229(simpara)
msgid ""
"Once completed, commit your configuration changes by entering "
"<literal>commit</literal> from the <literal>crm configure</literal> menu. "
"Pacemaker will then start the Cinder API service, and its dependent "
"resources, on one of your nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1235(title)
msgid "Configuring Cinder API service"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1237(simpara)
msgid "Edit <literal>/etc/cinder/cinder.conf</literal>:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1250(title)
msgid "Configuring OpenStack Services to use High Available Cinder API"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1252(simpara)
msgid ""
"Your OpenStack services must now point their Cinder API configuration to the"
" highly available, virtual cluster IP address — rather than a Cinder API "
"server’s physical IP address as you normally would."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1255(simpara)
msgid "You need to create the Cinder API Endpoint with this IP."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1257(simpara)
msgid ""
"If you are using both private and public IP, you should create two Virtual "
"IPs and define your endpoint like this:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1264(title)
msgid "Highly available OpenStack Networking Server"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1266(simpara)
msgid ""
"OpenStack Networking is the network connectivity service in OpenStack. "
"Making the OpenStack Networking Server service highly available in active / "
"passive mode involves"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1270(simpara)
msgid "configuring OpenStack Networking to listen on the VIP address,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1275(simpara)
msgid ""
"managing OpenStack Networking API Server daemon with the Pacemaker cluster "
"manager,"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1286(simpara)
msgid ""
"Here is the <link href=\"http://docs.openstack.org/trunk/install-"
"guide/install/apt/content/ch_installing-openstack-"
"networking.html\">documentation</link> for installing OpenStack Networking "
"service."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1290(title)
msgid "Adding OpenStack Networking Server resource to Pacemaker"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1296(simpara)
msgid ""
"You may now proceed with adding the Pacemaker configuration for OpenStack "
"Networking Server resource. Connect to the Pacemaker cluster with "
"<literal>crm configure</literal>, and add the following cluster resources:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1303(simpara)
msgid ""
"This configuration creates <literal>p_neutron-server</literal>, a resource "
"for manage OpenStack Networking Server service"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1304(simpara)
msgid ""
"<literal>crm configure</literal> supports batch input, so you may copy and "
"paste the above into your live pacemaker configuration, and then make "
"changes as required. For example, you may enter <literal>edit p_neutron-"
"server</literal> from the <literal>crm configure</literal> menu and edit the"
" resource to match your preferred virtual IP address."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1309(simpara)
msgid ""
"Once completed, commit your configuration changes by entering "
"<literal>commit</literal> from the <literal>crm configure</literal> menu. "
"Pacemaker will then start the OpenStack Networking API service, and its "
"dependent resources, on one of your nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1315(title)
msgid "Configuring OpenStack Networking Server"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1317(simpara)
msgid "Edit <literal>/etc/neutron/neutron.conf</literal> :"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1334(title)
msgid ""
"Configuring OpenStack Services to use Highly available OpenStack Networking "
"Server"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1336(simpara)
msgid ""
"Your OpenStack services must now point their OpenStack Networking Server "
"configuration to the highly available, virtual cluster IP address — rather "
"than an OpenStack Networking server’s physical IP address as you normally "
"would."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1339(simpara)
msgid ""
"For example, you should configure OpenStack Compute for using Highly "
"Available OpenStack Networking Server in editing "
"<literal>nova.conf</literal> file:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1341(simpara)
msgid ""
"You need to create the OpenStack Networking Server Endpoint with this IP."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1348(title)
msgid "Highly available Ceilometer Central Agent"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1350(simpara)
msgid ""
"Ceilometer is the metering service in OpenStack. Central Agent polls for "
"resource utilization statistics for resources not tied to instances or "
"compute nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1354(simpara)
msgid ""
"Due to limitations of a polling model, a single instance of this agent can "
"be polling a given list of meters. In this setup, we install this service on"
" the API nodes also in the active / passive mode."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1358(simpara)
msgid ""
"Making the Ceilometer Central Agent service highly available in active / "
"passive mode involves managing its daemon with the Pacemaker cluster "
"manager."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1361(simpara)
msgid ""
"You will find at <link "
"href=\"http://docs.openstack.org/developer/ceilometer/install/manual.html"
"#installing-the-central-agent\">this page</link> the process to install the "
"Ceilometer Central Agent."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1366(title)
msgid "Adding the Ceilometer Central Agent resource to Pacemaker"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1372(simpara)
msgid ""
"You may then proceed with adding the Pacemaker configuration for the "
"Ceilometer Central Agent resource. Connect to the Pacemaker cluster with "
"<literal>crm configure</literal>, and add the following cluster resources:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1381(simpara)
msgid ""
"<literal>p_ceilometer-agent-central</literal>, a resource for manage "
"Ceilometer Central Agent service"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1385(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1459(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1504(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1545(simpara)
msgid ""
"<literal>crm configure</literal> supports batch input, so you may copy and "
"paste the above into your live pacemaker configuration, and then make "
"changes as required."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1388(simpara)
msgid ""
"Once completed, commit your configuration changes by entering "
"<literal>commit</literal> from the <literal>crm configure</literal> menu. "
"Pacemaker will then start the Ceilometer Central Agent service, and its "
"dependent resources, on one of your nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1394(title)
msgid "Configuring Ceilometer Central Agent service"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1396(simpara)
msgid "Edit <literal>/etc/ceilometer/ceilometer.conf</literal> :"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1411(title)
msgid "Configure Pacemaker Group"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1413(simpara)
msgid ""
"Finally, we need to create a service <literal>group</literal> to ensure that"
" virtual IP is linked to the API services resources :"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1420(title)
msgid "Network Controller Cluster Stack"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1422(simpara)
msgid ""
"The Network controller sits on the management and data network, and needs to"
" be connected to the Internet if a VM needs access to it."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1424(simpara)
msgid ""
"Both nodes should have the same hostname since the Neutron scheduler will be"
" aware of one node, for example a virtual router attached to a single L3 "
"node."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1429(title)
msgid "Highly available Neutron L3 Agent"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1431(simpara)
msgid ""
"The Neutron L3 agent provides L3/NAT forwarding to ensure external network "
"access for VMs on tenant networks. High Availability for the L3 agent is "
"achieved by adopting Pacemaker."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1435(simpara)
msgid ""
"Here is the <link href=\"http://docs.openstack.org/trunk/config-"
"reference/content/section_adv_cfg_l3_agent.html\">documentation</link> for "
"installing Neutron L3 Agent."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1439(title)
msgid "Adding Neutron L3 Agent resource to Pacemaker"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1445(simpara)
msgid ""
"You may now proceed with adding the Pacemaker configuration for Neutron L3 "
"Agent resource. Connect to the Pacemaker cluster with <literal>crm "
"configure</literal>, and add the following cluster resources:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1455(simpara)
msgid ""
"<literal>p_neutron-l3-agent</literal>, a resource for manage Neutron L3 "
"Agent service"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1462(simpara)
msgid ""
"Once completed, commit your configuration changes by entering "
"<literal>commit</literal> from the <literal>crm configure</literal> menu. "
"Pacemaker will then start the Neutron L3 Agent service, and its dependent "
"resources, on one of your nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1466(simpara)
msgid ""
"This method does not ensure a zero downtime since it has to recreate all the"
" namespaces and virtual routers on the node."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1473(title)
msgid "Highly available Neutron DHCP Agent"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1475(simpara)
msgid ""
"Neutron DHCP agent distributes IP addresses to the VMs with dnsmasq (by "
"default). High Availability for the DHCP agent is achieved by adopting "
"Pacemaker."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1479(simpara)
msgid ""
"Here is the <link href=\"http://docs.openstack.org/trunk/config-"
"reference/content/section_adv_cfg_dhcp_agent.html\">documentation</link> for"
" installing Neutron DHCP Agent."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1483(title)
msgid "Adding Neutron DHCP Agent resource to Pacemaker"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1489(simpara)
msgid ""
"You may now proceed with adding the Pacemaker configuration for Neutron DHCP"
" Agent resource. Connect to the Pacemaker cluster with <literal>crm "
"configure</literal>, and add the following cluster resources:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1499(simpara)
msgid ""
"<literal>p_neutron-dhcp-agent</literal>, a resource for manage Neutron DHCP "
"Agent service"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1507(simpara)
msgid ""
"Once completed, commit your configuration changes by entering "
"<literal>commit</literal> from the <literal>crm configure</literal> menu. "
"Pacemaker will then start the Neutron DHCP Agent service, and its dependent "
"resources, on one of your nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1514(title)
msgid "Highly available Neutron Metadata Agent"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1516(simpara)
msgid ""
"Neutron Metadata agent allows Nova API Metadata to be reachable by VMs on "
"tenant networks. High Availability for the Metadata agent is achieved by "
"adopting Pacemaker."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1520(simpara)
msgid ""
"Here is the <link href=\"http://docs.openstack.org/trunk/config-"
"reference/content/networking-options-metadata.html\">documentation</link> "
"for installing Neutron Metadata Agent."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1524(title)
msgid "Adding Neutron Metadata Agent resource to Pacemaker"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1530(simpara)
msgid ""
"You may now proceed with adding the Pacemaker configuration for Neutron "
"Metadata Agent resource. Connect to the Pacemaker cluster with <literal>crm "
"configure</literal>, and add the following cluster resources:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1540(simpara)
msgid ""
"<literal>p_neutron-metadata-agent</literal>, a resource for manage Neutron "
"Metadata Agent service"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1548(simpara)
msgid ""
"Once completed, commit your configuration changes by entering "
"<literal>commit</literal> from the <literal>crm configure</literal> menu. "
"Pacemaker will then start the Neutron Metadata Agent service, and its "
"dependent resources, on one of your nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1555(title)
msgid "Manage network resources"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1557(simpara)
msgid ""
"You may now proceed with adding the Pacemaker configuration for managing all"
" network resources together with a group. Connect to the Pacemaker cluster "
"with <literal>crm configure</literal>, and add the following cluster "
"resources:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1568(title)
msgid "HA Using Active/Active"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1572(title)
msgid "Database"
msgstr "資料庫"

#: ./doc/high-availability-guide/bk-ha-guide.xml1574(simpara)
msgid ""
"The first step is installing the database that sits at the heart of the "
"cluster. When we’re talking about High Availability, however, we’re talking "
"about not just one database, but several (for redundancy) and a means to "
"keep them synchronized. In this case, we’re going to choose the MySQL "
"database, along with Galera for synchronous multi-master replication."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1579(simpara)
msgid ""
"The choice of database isn’t a foregone conclusion; you’re not required to "
"use MySQL. It is, however, a fairly common choice in OpenStack "
"installations, so we’ll cover it here."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1584(title)
msgid "MySQL with Galera"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1586(simpara)
msgid ""
"Rather than starting with a vanilla version of MySQL and then adding Galera "
"to it, you will want to install a version of MySQL patched for wsrep (Write "
"Set REPlication) from <link href=\"https://launchpad.net/codership-"
"mysql/0.7\">https://launchpad.net/codership-mysql/0.7</link>. Note that the "
"installation requirements are a bit touchy; you will want to make sure to "
"read the README file so you don’t miss any steps."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1591(simpara)
msgid ""
"Next, download Galera itself from <link "
"href=\"https://launchpad.net/galera/+download\">https://launchpad.net/galera/+download</link>."
" Go ahead and install the *.rpms or *.debs, taking care of any dependencies "
"that your system doesn’t already have installed."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1594(simpara)
msgid ""
"Once you’ve completed the installation, you’ll need to make a few "
"configuration changes:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1595(simpara)
msgid ""
"In the system-wide <literal>my.conf</literal> file, make sure mysqld isn’t "
"bound to 127.0.0.1, and that <literal>/etc/mysql/conf.d/</literal> is "
"included. Typically you can find this file at "
"<literal>/etc/my.cnf</literal>:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1602(simpara)
msgid ""
"When adding a new node, you must configure it with a MySQL account that can "
"access the other nodes so that it can request a state snapshot from one of "
"those existing nodes. First specify that account information in "
"<literal>/etc/mysql/conf.d/wsrep.cnf</literal>:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1606(simpara)
msgid "Next connect as root and grant privileges to that user:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1608(simpara)
msgid ""
"You’ll also need to remove user accounts with empty usernames, as they cause"
" problems:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1610(simpara)
msgid ""
"You’ll also need to set certain mandatory configuration options within MySQL"
" itself. These include:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1616(simpara)
msgid ""
"Finally, make sure that the nodes can access each other through the "
"firewall. This might mean adjusting iptables, as in:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1620(simpara)
msgid ""
"It might also mean configuring any NAT firewall between nodes to allow "
"direct connections, or disabling SELinux or configuring it to allow mysqld "
"to listen to sockets at unprivileged ports."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1623(simpara)
msgid "Now you’re ready to actually create the cluster."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1626(title)
msgid "Creating the cluster"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1628(simpara)
msgid ""
"In creating a cluster, you first start a single instance, which creates the "
"cluster. The rest of the MySQL instances then connect to that cluster. For "
"example, if you started on <literal>10.0.0.10</literal> by executing the "
"command:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1630(simpara)
msgid ""
"you could then connect to that cluster on the rest of the nodes by "
"referencing the address of that node, as in:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1632(simpara)
msgid ""
"You also have the option to set the <literal>wsrep_cluster_address</literal>"
" in the <literal>/etc/mysql/conf.d/wsrep.cnf</literal> file, or within the "
"client itself. (In fact, for some systems, such as MariaDB or Percona, this "
"may be your only option.) For example, to check the status of the cluster, "
"open the MySQL client and check the status of the various parameters:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1639(simpara)
msgid "You should see a status that looks something like this:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1688(title)
msgid "Galera Monitoring Scripts"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1690(simpara)
msgid "(Coming soon)"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1694(title)
msgid "Other ways to provide a Highly Available database"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1696(simpara)
msgid ""
"MySQL with Galera is by no means the only way to achieve database HA. "
"MariaDB (<link href=\"https://mariadb.org/\">https://mariadb.org/</link>) "
"and Percona (<link "
"href=\"http://www.percona.com/\">http://www.percona.com/</link>) also work "
"with Galera. You also have the option to use Postgres, which has its own "
"replication, or some other database HA option."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1704(title)
msgid "RabbitMQ"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1706(simpara)
msgid ""
"RabbitMQ is the default AMQP server used by many OpenStack services. Making "
"the RabbitMQ service highly available involves the following steps:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1710(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1727(title)
msgid "Install RabbitMQ"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1715(simpara)
msgid "Configure RabbitMQ for HA queues"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1720(simpara)
msgid "Configure OpenStack services to use Rabbit HA queues"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1729(simpara)
msgid "This setup has been tested with RabbitMQ 2.7.1."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1732(title)
msgid "On Ubuntu / Debian"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1734(simpara)
#: ./doc/high-availability-guide/bk-ha-guide.xml1744(simpara)
msgid "RabbitMQ is packaged on both distros:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1737(link)
msgid "Official manual for installing RabbitMQ on Ubuntu / Debian"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1742(title)
msgid "On Fedora / RHEL"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1747(link)
msgid "Official manual for installing RabbitMQ on Fedora / RHEL"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1753(title)
msgid "Configure RabbitMQ"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1755(simpara)
msgid ""
"Here we are building a cluster of RabbitMQ nodes to construct a RabbitMQ "
"broker. Mirrored queues in RabbitMQ improve the availability of service "
"since it will be resilient to failures. We have to consider that while "
"exchanges and bindings will survive the loss of individual nodes, queues and"
" their messages will not because a queue and its contents is located on one "
"node. If we lose this node, we also lose the queue."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1760(simpara)
msgid ""
"We consider that we run (at least) two RabbitMQ servers. To build a broker, "
"we need to ensure that all nodes have the same erlang cookie file. To do so,"
" stop RabbitMQ everywhere and copy the cookie from rabbit1 server to other "
"server(s):"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1765(simpara)
msgid ""
"Then, start RabbitMQ on nodes. If RabbitMQ fails to start, you can’t "
"continue to the next step."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1767(simpara)
msgid "Now, we are building the HA cluster. From rabbit2, run these commands:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1771(simpara)
msgid "To verify the cluster status :"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1776(simpara)
msgid ""
"If the cluster is working, you can now proceed to creating users and "
"passwords for queues."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1778(emphasis)
msgid "Note for RabbitMQ version 3"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1780(simpara)
msgid ""
"Queue mirroring is no longer controlled by the <emphasis>x-ha-"
"policy</emphasis> argument when declaring a queue. OpenStack can continue to"
" declare this argument, but it won’t cause queues to be mirrored. We need to"
" make sure that all queues (except those with auto-generated names) are "
"mirrored across all running nodes:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1785(link)
msgid "More information about High availability in RabbitMQ"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1790(title)
msgid "Configure OpenStack Services to use RabbitMQ"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1792(simpara)
msgid ""
"We have to configure the OpenStack components to use at least two RabbitMQ "
"nodes."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1793(simpara)
msgid "Do this configuration on all services using RabbitMQ:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1794(simpara)
msgid "RabbitMQ HA cluster host:port pairs:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1796(simpara)
msgid "How frequently to retry connecting with RabbitMQ:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1798(simpara)
msgid "How long to back-off for between retries when connecting to RabbitMQ:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1800(simpara)
msgid ""
"Maximum retries with trying to connect to RabbitMQ (infinite by default):"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1802(simpara)
msgid "Use durable queues in RabbitMQ:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1804(simpara)
msgid "Use H/A queues in RabbitMQ (x-ha-policy: all):"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1806(simpara)
msgid ""
"If you change the configuration from an old setup which did not use HA "
"queues, you should interrupt the service:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1810(simpara)
msgid ""
"Services currently working with HA queues: OpenStack Compute, OpenStack "
"Block Storage, OpenStack Networking, Telemetry."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1815(title)
msgid "HAproxy Nodes"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1817(simpara)
msgid ""
"HAProxy is a very fast and reliable solution offering high availability, "
"load balancing, and proxying for TCP and HTTP-based applications. It is "
"particularly suited for web sites crawling under very high loads while "
"needing persistence or Layer 7 processing. Supporting tens of thousands of "
"connections is clearly realistic with today’s hardware."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1821(simpara)
msgid ""
"For installing HAproxy on your nodes, you should consider its <link "
"href=\"http://haproxy.1wt.eu/#docs\">official documentation</link>. Also, "
"you have to consider that this service should not be a single point of "
"failure, so you need at least two nodes running HAproxy."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1824(simpara)
msgid "Here is an example for HAproxy configuration file:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1964(simpara)
msgid "After each change of this file, you should restart HAproxy."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1968(title)
msgid "OpenStack Controller Nodes"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1970(simpara)
msgid "OpenStack Controller Nodes contains:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1973(simpara)
msgid "All OpenStack API services"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1978(simpara)
msgid "All OpenStack schedulers"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1983(simpara)
msgid "Memcached service"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1990(title)
msgid "Running OpenStack API &amp; schedulers"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1994(title)
msgid "API Services"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml1996(simpara)
msgid ""
"All OpenStack projects have an API service for controlling all the resources"
" in the Cloud. In Active / Active mode, the most common setup is to scale-"
"out these services on at least two nodes and use load-balancing and virtual "
"IP (with HAproxy &amp; Keepalived in this setup)."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2000(emphasis)
msgid "Configuring API OpenStack services"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2002(simpara)
msgid ""
"To configure our Cloud using Highly available and scalable API services, we "
"need to ensure that:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2005(simpara)
msgid "Using Virtual IP when configuring OpenStack Identity Endpoints."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2010(simpara)
msgid "All OpenStack configuration files should refer to Virtual IP."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2016(emphasis)
msgid "In case of failure"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2018(simpara)
msgid ""
"The monitor check is quite simple since it just establishes a TCP connection"
" to the API port. Comparing to the Active / Passive mode using Corosync "
"&amp; Resources Agents, we don’t check if the service is actually running). "
"That’s why all OpenStack API should be monitored by another tool (i.e. "
"Nagios) with the goal to detect failures in the Cloud Framework "
"infrastructure."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2025(title)
msgid "Schedulers"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2027(simpara)
msgid ""
"OpenStack schedulers are used to determine how to dispatch compute, network "
"and volume requests. The most common setup is to use RabbitMQ as messaging "
"system already documented in this guide. Those services are connected to the"
" messaging backend and can scale-out :"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2032(simpara)
msgid "nova-scheduler"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2037(simpara)
msgid "nova-conductor"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2042(simpara)
msgid "cinder-scheduler"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2047(simpara)
msgid "neutron-server"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2052(simpara)
msgid "ceilometer-collector"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2057(simpara)
msgid "heat-engine"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2062(simpara)
msgid ""
"Please refer to the RabbitMQ section for configure these services with "
"multiple messaging servers."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2067(title)
msgid "Memcached"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2069(simpara)
msgid ""
"Most of OpenStack services use an application to offer persistence and store"
" ephemeral datas (like tokens). Memcached is one of them and can scale-out "
"easily without specific trick."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2071(simpara)
msgid ""
"To install and configure it, you can read the <link "
"href=\"http://code.google.com/p/memcached/wiki/NewStart\">official "
"documentation</link>."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2072(simpara)
msgid ""
"Memory caching is managed by Oslo-incubator for so the way to use multiple "
"memcached servers is the same for all projects."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2073(simpara)
msgid "Example with two hosts:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2075(simpara)
msgid ""
"By default, controller1 will handle the caching service but if the host goes"
" down, controller2 will do the job. More informations about memcached "
"installation are in the OpenStack Compute Manual."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2081(title)
msgid "OpenStack Network Nodes"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2083(simpara)
msgid "OpenStack Network Nodes contains:"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2086(simpara)
msgid "Neutron DHCP Agent"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2091(simpara)
msgid "Neutron L2 Agent"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2096(simpara)
msgid "Neutron L3 Agent"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2101(simpara)
msgid "Neutron Metadata Agent"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2106(simpara)
msgid "Neutron LBaaS Agent"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2112(simpara)
msgid ""
"The Neutron L2 Agent does not need to be highly available. It has to be "
"installed on each Data Forwarding Node and controls the virtual networking "
"drivers as Open-vSwitch or Linux Bridge. One L2 agent runs per node and "
"controls its virtual interfaces. That’s why it cannot be distributed and "
"highly available."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2120(title)
msgid "Running Neutron DHCP Agent"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2122(simpara)
msgid ""
"OpenStack Networking service has a scheduler that lets you run multiple "
"agents across nodes. Also, the DHCP agent can be natively highly available. "
"For details, see <link href=\"http://docs.openstack.org/trunk/config-"
"reference/content/app_demo_multi_dhcp_agents.html\">OpenStack Configuration "
"Reference</link>."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2128(title)
msgid "Running Neutron L3 Agent"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2130(simpara)
msgid ""
"The Neutron L3 Agent is scalable thanks to the scheduler that allows "
"distribution of virtual routers across multiple nodes. But there is no "
"native feature to make these routers highly available. At this time, the "
"Active / Passive solution exists to run the Neutron L3 agent in failover "
"mode with Pacemaker. See the Active / Passive section of this guide."
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2139(title)
msgid "Running Neutron Metadata Agent"
msgstr ""

#: ./doc/high-availability-guide/bk-ha-guide.xml2141(simpara)
msgid ""
"There is no native feature to make this service highly available. At this "
"time, the Active / Passive solution exists to run the Neutron Metadata agent"
" in failover mode with Pacemaker. See the Active / Passive section of this "
"guide."
msgstr ""

#. Put one translator per line, in the form of NAME <EMAIL>, YEAR1, YEAR2
#: ./doc/high-availability-guide/bk-ha-guide.xml0(None)
msgid "translator-credits"
msgstr ""