openstack/openstack-manuals
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Merge "Mention ceilometer service names and alarm notifier"

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Jenkins 2013-10-13 10:53:41 +00:00 committed by Gerrit Code Review
commit 9a96a42048
1 changed files with 19 additions and 4 deletions
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23
doc/common/section_getstart_metering.xml
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@ -33,18 +33,24 @@
components:</para>
<itemizedlist>
<listitem>
<para>A compute agent. Runs on each compute node and polls
<para>A compute agent (<systemitem class="service">
ceilometer-agent-compute</systemitem>). Runs on each
compute node and polls
for resource utilization statistics. There may be other
types of agents in the future, but for now we will focus
on creating the compute agent.</para>
</listitem>
<listitem>
<para>A central agent. Runs on a central management server
<para>A central agent (<systemitem class="service">
ceilometer-agent-central</systemitem>. Runs on a central
management server
to poll for resource utilization statistics for resources
not tied to instances or compute nodes.</para>
</listitem>
<listitem>
<para>A collector. Runs on one or more central management
<para>A collector (<systemitem class="service">
ceilometer-collector</systemitem>). Runs on one or more
central management
servers to monitor the message queues (for notifications
and for metering data coming from the agent). Notification
messages are processed and turned into metering messages
@ -52,13 +58,22 @@
appropriate topic. Metering messages are written to the
data store without modification.</para>
</listitem>
<listitem>
<para>An alarm notifier (<systemitem class="service">
ceilometer-alarm-notifier</systemitem>). runs on one or more
central management servers to allow settting alarms based on
threshold evaluation for a collection of samples.
</para>
</listitem>
<listitem>
<para>A data store. A database capable of handling
concurrent writes (from one or more collector instances)
and reads (from the API server).</para>
</listitem>
<listitem>
<para>An API server. Runs on one or more central management
<para>An API server (<systemitem class="service">
ceilometer-api</systemitem>). Runs on one or more central
management
servers to provide access to the data from the data store.
These services communicate using the standard OpenStack
messaging bus. Only the collector and API server have