openstack/swift
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18a0813d9b
swift/doc/source/development_saio.rst
Chuck Thier 581f7f5517 Update docs to use default XFS inode size 
In past couple of years, the XFS team has greatly improved inode use in
xfs.  With more recent kernels, there is no performance penalty for
using the default inode size, and a smaller inode size gives us
improvements in other areas where disk access is involved.

DocImpact

Change-Id: Ie9da53a6e8bf43d1d02881befbb52595462c9f2e
2013-06-28 19:52:17 +00:00

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=======================
SAIO - Swift All In One
=======================
---------------------------------------------
Instructions for setting up a development VM
---------------------------------------------
This section documents setting up a virtual machine for doing Swift development.
The virtual machine will emulate running a four node Swift cluster.
* Get an Ubuntu 12.04 LTS (Precise Pangolin) server image or try something Fedora/CentOS.
* Create guest virtual machine from the image.
Additional information about setting up a Swift development snapshot on other distributions is
available on the wiki at http://wiki.openstack.org/SAIOInstructions.
----------------------------
What's in a <your-user-name>
----------------------------
Much of the configuration described in this guide requires escalated root
privileges; however, we assume that administrator logs in an unprivileged
user. Swift processes also run under a separate user and group, set by
configuration option, and refered as <your-user-name>:<your-group-name>.
The default user is `swift`, which may not exist on your system.
Perform the following commands as root.
-----------------------
Installing dependencies
-----------------------
* On apt based systems,
#. `apt-get update`
#. `apt-get install curl gcc memcached rsync sqlite3 xfsprogs git-core python-setuptools`
#. `apt-get install python-coverage python-dev python-nose python-simplejson
python-xattr python-eventlet python-greenlet python-pastedeploy
python-netifaces python-pip python-dnspython python-mock`
* On yum based systems,
#. `yum install curl gcc memcached rsync sqlite xfsprogs git-core xinetd python-setuptools`
#. `yum install python-coverage python-devel python-nose python-simplejson
python-xattr python-eventlet python-greenlet python-pastedeploy
python-netifaces python-pip python-dnspython python-mock`
This installs necessary system dependencies; and *most* of the python
dependencies. Later in the process setuptools/distribute or pip will
install and/or upgrade some other stuff - it's getting harder to avoid.
You can also install anything else you want, like screen, ssh, vim, etc.
Next, choose either :ref:`partition-section` or :ref:`loopback-section`.
.. _partition-section:
Using a partition for storage
=============================
If you are going to use a separate partition for Swift data, be sure to add
another device when creating the VM, and follow these instructions.
#. `fdisk /dev/sdb` (set up a single partition)
#. `mkfs.xfs /dev/sdb1`
#. Edit `/etc/fstab` and add
`/dev/sdb1 /mnt/sdb1 xfs noatime,nodiratime,nobarrier,logbufs=8 0 0`
#. `mkdir /mnt/sdb1`
#. `mount /mnt/sdb1`
#. `mkdir /mnt/sdb1/1 /mnt/sdb1/2 /mnt/sdb1/3 /mnt/sdb1/4`
#. `chown <your-user-name>:<your-group-name> /mnt/sdb1/*`
#. `mkdir /srv`
#. `for x in {1..4}; do ln -s /mnt/sdb1/$x /srv/$x; done`
#. `mkdir -p /etc/swift/object-server /etc/swift/container-server /etc/swift/account-server /srv/1/node/sdb1 /srv/2/node/sdb2 /srv/3/node/sdb3 /srv/4/node/sdb4 /var/run/swift`
#. `chown -R <your-user-name>:<your-group-name> /etc/swift /srv/[1-4]/ /var/run/swift` -- **Make sure to include the trailing slash after /srv/[1-4]/**
#. Add to `/etc/rc.local` (before the `exit 0`)::
mkdir -p /var/cache/swift /var/cache/swift2 /var/cache/swift3 /var/cache/swift4
chown <your-user-name>:<your-group-name> /var/cache/swift*
mkdir -p /var/run/swift
chown <your-user-name>:<your-group-name> /var/run/swift
#. Next, skip to :ref:`rsync-section`.
.. _loopback-section:
Using a loopback device for storage
===================================
If you want to use a loopback device instead of another partition, follow these instructions.
#. `mkdir /srv`
#. `truncate -s 1GB /srv/swift-disk`
(modify size to make a larger or smaller partition)
#. `mkfs.xfs /srv/swift-disk`
#. Edit `/etc/fstab` and add
`/srv/swift-disk /mnt/sdb1 xfs loop,noatime,nodiratime,nobarrier,logbufs=8 0 0`
#. `mkdir /mnt/sdb1`
#. `mount /mnt/sdb1`
#. `mkdir /mnt/sdb1/1 /mnt/sdb1/2 /mnt/sdb1/3 /mnt/sdb1/4`
#. `chown <your-user-name>:<your-group-name> /mnt/sdb1/*`
#. `for x in {1..4}; do ln -s /mnt/sdb1/$x /srv/$x; done`
#. `mkdir -p /etc/swift/object-server /etc/swift/container-server /etc/swift/account-server /srv/1/node/sdb1 /srv/2/node/sdb2 /srv/3/node/sdb3 /srv/4/node/sdb4 /var/run/swift`
#. `chown -R <your-user-name>:<your-group-name> /etc/swift /srv/[1-4]/ /var/run/swift` -- **Make sure to include the trailing slash after /srv/[1-4]/**
#. Add to `/etc/rc.local` (before the `exit 0`)::
mkdir -p /var/cache/swift /var/cache/swift2 /var/cache/swift3 /var/cache/swift4
chown <your-user-name>:<your-group-name> /var/cache/swift*
mkdir -p /var/run/swift
chown <your-user-name>:<your-group-name> /var/run/swift
.. _rsync-section:
----------------
Setting up rsync
----------------
#. Create /etc/rsyncd.conf::
uid = <your-user-name>
gid = <your-group-name>
log file = /var/log/rsyncd.log
pid file = /var/run/rsyncd.pid
address = 127.0.0.1
[account6012]
max connections = 25
path = /srv/1/node/
read only = false
lock file = /var/lock/account6012.lock
[account6022]
max connections = 25
path = /srv/2/node/
read only = false
lock file = /var/lock/account6022.lock
[account6032]
max connections = 25
path = /srv/3/node/
read only = false
lock file = /var/lock/account6032.lock
[account6042]
max connections = 25
path = /srv/4/node/
read only = false
lock file = /var/lock/account6042.lock
[container6011]
max connections = 25
path = /srv/1/node/
read only = false
lock file = /var/lock/container6011.lock
[container6021]
max connections = 25
path = /srv/2/node/
read only = false
lock file = /var/lock/container6021.lock
[container6031]
max connections = 25
path = /srv/3/node/
read only = false
lock file = /var/lock/container6031.lock
[container6041]
max connections = 25
path = /srv/4/node/
read only = false
lock file = /var/lock/container6041.lock
[object6010]
max connections = 25
path = /srv/1/node/
read only = false
lock file = /var/lock/object6010.lock
[object6020]
max connections = 25
path = /srv/2/node/
read only = false
lock file = /var/lock/object6020.lock
[object6030]
max connections = 25
path = /srv/3/node/
read only = false
lock file = /var/lock/object6030.lock
[object6040]
max connections = 25
path = /srv/4/node/
read only = false
lock file = /var/lock/object6040.lock
#. On Ubuntu, edit the following line in /etc/default/rsync::
RSYNC_ENABLE=true
On Fedora, edit the following line in /etc/xinetd.d/rsync::
disable = no
#. On Ubuntu, run `service rsync restart`, on xinetd based systems
run `service xinetd restart`.
#. Verify rsync is accepting connections for all servers::
rsync rsync://pub@localhost/
------------------
Starting memcached
------------------
On non-Ubuntu distros you need to ensure memcached is running:
* `service memcached start`
* `chkconfig memcached on`
or:
* `systemctl enable memcached.service`
* `systemctl start memcached.service`
The tempauth middleware stores tokens in memcached. If memcached is not
running, tokens cannot be validated, and accessing Swift becomes impossible.
---------------------------------------------------
Optional: Setting up rsyslog for individual logging
---------------------------------------------------
#. Create /etc/rsyslog.d/10-swift.conf::
# Uncomment the following to have a log containing all logs together
#local1,local2,local3,local4,local5.* /var/log/swift/all.log
# Uncomment the following to have hourly proxy logs for stats processing
#$template HourlyProxyLog,"/var/log/swift/hourly/%$YEAR%%$MONTH%%$DAY%%$HOUR%"
#local1.*;local1.!notice ?HourlyProxyLog
local1.*;local1.!notice /var/log/swift/proxy.log
local1.notice /var/log/swift/proxy.error
local1.* ~
local2.*;local2.!notice /var/log/swift/storage1.log
local2.notice /var/log/swift/storage1.error
local2.* ~
local3.*;local3.!notice /var/log/swift/storage2.log
local3.notice /var/log/swift/storage2.error
local3.* ~
local4.*;local4.!notice /var/log/swift/storage3.log
local4.notice /var/log/swift/storage3.error
local4.* ~
local5.*;local5.!notice /var/log/swift/storage4.log
local5.notice /var/log/swift/storage4.error
local5.* ~
#. Edit /etc/rsyslog.conf and make the following change::
$PrivDropToGroup adm
#. `mkdir -p /var/log/swift/hourly`
#. `chown -R syslog.adm /var/log/swift`
#. `chmod -R g+w /var/log/swift`
#. `service rsyslog restart`
----------------
Getting the code
----------------
You can do the following commands as administrator user.
#. Check out the python-swiftclient repo
`git clone https://github.com/openstack/python-swiftclient.git`
#. Build a development installation of python-swiftclient
`cd ~/python-swiftclient; sudo python setup.py develop; cd -`
#. Check out the swift repo
`git clone https://github.com/openstack/swift.git`
#. Build a development installation of swift
`cd ~/swift; sudo python setup.py develop; cd -`
#. Install swift's test dependencies
`sudo pip install -r swift/test-requirements.txt`
Do the following commands as root, but verify that Swift has access
to resulting configuration files.
---------------------
Configuring each node
---------------------
Sample configuration files are provided with all defaults in line-by-line comments.
#. Create `/etc/swift/proxy-server.conf`::
[DEFAULT]
bind_port = 8080
user = <your-user-name>
log_facility = LOG_LOCAL1
eventlet_debug = true
[pipeline:main]
pipeline = healthcheck cache tempauth proxy-logging proxy-server
[app:proxy-server]
use = egg:swift#proxy
allow_account_management = true
account_autocreate = true
[filter:tempauth]
use = egg:swift#tempauth
user_admin_admin = admin .admin .reseller_admin
user_test_tester = testing .admin
user_test2_tester2 = testing2 .admin
user_test_tester3 = testing3
[filter:healthcheck]
use = egg:swift#healthcheck
[filter:cache]
use = egg:swift#memcache
[filter:proxy-logging]
use = egg:swift#proxy_logging
#. Create `/etc/swift/swift.conf`::
[swift-hash]
# random unique strings that can never change (DO NOT LOSE)
swift_hash_path_prefix = changeme
swift_hash_path_suffix = changeme
#. Create `/etc/swift/account-server/1.conf`::
[DEFAULT]
devices = /srv/1/node
mount_check = false
disable_fallocate = true
bind_port = 6012
user = <your-user-name>
log_facility = LOG_LOCAL2
recon_cache_path = /var/cache/swift
eventlet_debug = true
[pipeline:main]
pipeline = recon account-server
[app:account-server]
use = egg:swift#account
[filter:recon]
use = egg:swift#recon
[account-replicator]
vm_test_mode = yes
[account-auditor]
[account-reaper]
#. Create `/etc/swift/account-server/2.conf`::
[DEFAULT]
devices = /srv/2/node
mount_check = false
disable_fallocate = true
bind_port = 6022
user = <your-user-name>
log_facility = LOG_LOCAL3
recon_cache_path = /var/cache/swift2
eventlet_debug = true
[pipeline:main]
pipeline = recon account-server
[app:account-server]
use = egg:swift#account
[filter:recon]
use = egg:swift#recon
[account-replicator]
vm_test_mode = yes
[account-auditor]
[account-reaper]
#. Create `/etc/swift/account-server/3.conf`::
[DEFAULT]
devices = /srv/3/node
mount_check = false
disable_fallocate = true
bind_port = 6032
user = <your-user-name>
log_facility = LOG_LOCAL4
recon_cache_path = /var/cache/swift3
eventlet_debug = true
[pipeline:main]
pipeline = recon account-server
[app:account-server]
use = egg:swift#account
[filter:recon]
use = egg:swift#recon
[account-replicator]
vm_test_mode = yes
[account-auditor]
[account-reaper]
#. Create `/etc/swift/account-server/4.conf`::
[DEFAULT]
devices = /srv/4/node
mount_check = false
disable_fallocate = true
bind_port = 6042
user = <your-user-name>
log_facility = LOG_LOCAL5
recon_cache_path = /var/cache/swift4
eventlet_debug = true
[pipeline:main]
pipeline = recon account-server
[app:account-server]
use = egg:swift#account
[filter:recon]
use = egg:swift#recon
[account-replicator]
vm_test_mode = yes
[account-auditor]
[account-reaper]
#. Create `/etc/swift/container-server/1.conf`::
[DEFAULT]
devices = /srv/1/node
mount_check = false
disable_fallocate = true
bind_port = 6011
user = <your-user-name>
log_facility = LOG_LOCAL2
recon_cache_path = /var/cache/swift
eventlet_debug = true
[pipeline:main]
pipeline = recon container-server
[app:container-server]
use = egg:swift#container
[filter:recon]
use = egg:swift#recon
[container-replicator]
vm_test_mode = yes
[container-updater]
[container-auditor]
[container-sync]
#. Create `/etc/swift/container-server/2.conf`::
[DEFAULT]
devices = /srv/2/node
mount_check = false
disable_fallocate = true
bind_port = 6021
user = <your-user-name>
log_facility = LOG_LOCAL3
recon_cache_path = /var/cache/swift2
eventlet_debug = true
[pipeline:main]
pipeline = recon container-server
[app:container-server]
use = egg:swift#container
[filter:recon]
use = egg:swift#recon
[container-replicator]
vm_test_mode = yes
[container-updater]
[container-auditor]
[container-sync]
#. Create `/etc/swift/container-server/3.conf`::
[DEFAULT]
devices = /srv/3/node
mount_check = false
disable_fallocate = true
bind_port = 6031
user = <your-user-name>
log_facility = LOG_LOCAL4
recon_cache_path = /var/cache/swift3
eventlet_debug = true
[pipeline:main]
pipeline = recon container-server
[app:container-server]
use = egg:swift#container
[filter:recon]
use = egg:swift#recon
[container-replicator]
vm_test_mode = yes
[container-updater]
[container-auditor]
[container-sync]
#. Create `/etc/swift/container-server/4.conf`::
[DEFAULT]
devices = /srv/4/node
mount_check = false
disable_fallocate = true
bind_port = 6041
user = <your-user-name>
log_facility = LOG_LOCAL5
recon_cache_path = /var/cache/swift4
eventlet_debug = true
[pipeline:main]
pipeline = recon container-server
[app:container-server]
use = egg:swift#container
[filter:recon]
use = egg:swift#recon
[container-replicator]
vm_test_mode = yes
[container-updater]
[container-auditor]
[container-sync]
#. Create `/etc/swift/object-server/1.conf`::
[DEFAULT]
devices = /srv/1/node
mount_check = false
disable_fallocate = true
bind_port = 6010
user = <your-user-name>
log_facility = LOG_LOCAL2
recon_cache_path = /var/cache/swift
eventlet_debug = true
[pipeline:main]
pipeline = recon object-server
[app:object-server]
use = egg:swift#object
[filter:recon]
use = egg:swift#recon
[object-replicator]
vm_test_mode = yes
[object-updater]
[object-auditor]
#. Create `/etc/swift/object-server/2.conf`::
[DEFAULT]
devices = /srv/2/node
mount_check = false
disable_fallocate = true
bind_port = 6020
user = <your-user-name>
log_facility = LOG_LOCAL3
recon_cache_path = /var/cache/swift2
eventlet_debug = true
[pipeline:main]
pipeline = recon object-server
[app:object-server]
use = egg:swift#object
[filter:recon]
use = egg:swift#recon
[object-replicator]
vm_test_mode = yes
[object-updater]
[object-auditor]
#. Create `/etc/swift/object-server/3.conf`::
[DEFAULT]
devices = /srv/3/node
mount_check = false
disable_fallocate = true
bind_port = 6030
user = <your-user-name>
log_facility = LOG_LOCAL4
recon_cache_path = /var/cache/swift3
eventlet_debug = true
[pipeline:main]
pipeline = recon object-server
[app:object-server]
use = egg:swift#object
[filter:recon]
use = egg:swift#recon
[object-replicator]
vm_test_mode = yes
[object-updater]
[object-auditor]
#. Create `/etc/swift/object-server/4.conf`::
[DEFAULT]
devices = /srv/4/node
mount_check = false
disable_fallocate = true
bind_port = 6040
user = <your-user-name>
log_facility = LOG_LOCAL5
recon_cache_path = /var/cache/swift4
eventlet_debug = true
[pipeline:main]
pipeline = recon object-server
[app:object-server]
use = egg:swift#object
[filter:recon]
use = egg:swift#recon
[object-replicator]
vm_test_mode = yes
[object-updater]
[object-auditor]
#. Update <your-user-name>::
find /etc/swift/ -name \*.conf | xargs sed -i "s/<your-user-name>/${USER}/"
------------------------------------
Setting up scripts for running Swift
------------------------------------
#. `mkdir ~/bin`
#. Create `~/bin/resetswift.`
If you are using a loopback device substitute `/dev/sdb1` with `/srv/swift-disk`.
If you did not set up rsyslog for individual logging, remove the `find /var/log/swift...` line::
#!/bin/bash
swift-init all stop
find /var/log/swift -type f -exec rm -f {} \;
sudo umount /mnt/sdb1
sudo mkfs.xfs -f /dev/sdb1
sudo mount /mnt/sdb1
sudo mkdir /mnt/sdb1/1 /mnt/sdb1/2 /mnt/sdb1/3 /mnt/sdb1/4
sudo chown <your-user-name>:<your-group-name> /mnt/sdb1/*
mkdir -p /srv/1/node/sdb1 /srv/2/node/sdb2 /srv/3/node/sdb3 /srv/4/node/sdb4
sudo rm -f /var/log/debug /var/log/messages /var/log/rsyncd.log /var/log/syslog
find /var/cache/swift* -type f -name *.recon -exec rm -f {} \;
sudo service rsyslog restart
sudo service memcached restart
#. Create `~/bin/remakerings`::
#!/bin/bash
cd /etc/swift
rm -f *.builder *.ring.gz backups/*.builder backups/*.ring.gz
swift-ring-builder object.builder create 10 3 1
swift-ring-builder object.builder add r1z1-127.0.0.1:6010/sdb1 1
swift-ring-builder object.builder add r1z2-127.0.0.1:6020/sdb2 1
swift-ring-builder object.builder add r1z3-127.0.0.1:6030/sdb3 1
swift-ring-builder object.builder add r1z4-127.0.0.1:6040/sdb4 1
swift-ring-builder object.builder rebalance
swift-ring-builder container.builder create 10 3 1
swift-ring-builder container.builder add r1z1-127.0.0.1:6011/sdb1 1
swift-ring-builder container.builder add r1z2-127.0.0.1:6021/sdb2 1
swift-ring-builder container.builder add r1z3-127.0.0.1:6031/sdb3 1
swift-ring-builder container.builder add r1z4-127.0.0.1:6041/sdb4 1
swift-ring-builder container.builder rebalance
swift-ring-builder account.builder create 10 3 1
swift-ring-builder account.builder add r1z1-127.0.0.1:6012/sdb1 1
swift-ring-builder account.builder add r1z2-127.0.0.1:6022/sdb2 1
swift-ring-builder account.builder add r1z3-127.0.0.1:6032/sdb3 1
swift-ring-builder account.builder add r1z4-127.0.0.1:6042/sdb4 1
swift-ring-builder account.builder rebalance
#. Create `~/bin/startmain`::
#!/bin/bash
swift-init main start
#. Create `~/bin/startrest`::
#!/bin/bash
swift-init rest start
#. `chmod +x ~/bin/*`
#. Edit `~/.bashrc` and add to the end::
export SWIFT_TEST_CONFIG_FILE=/etc/swift/test.conf
export PATH=${PATH}:~/bin
#. `. ~/.bashrc`
#. `remakerings`
#. `cp ~/swift/test/sample.conf /etc/swift/test.conf`
#. `~/swift/.unittests`
#. `startmain` (The ``Unable to increase file descriptor limit. Running as non-root?`` warnings are expected and ok.)
#. Get an `X-Storage-Url` and `X-Auth-Token`: ``curl -v -H 'X-Storage-User: test:tester' -H 'X-Storage-Pass: testing' http://127.0.0.1:8080/auth/v1.0``
#. Check that you can GET account: ``curl -v -H 'X-Auth-Token: <token-from-x-auth-token-above>' <url-from-x-storage-url-above>``
#. Check that `swift` works: `swift -A http://127.0.0.1:8080/auth/v1.0 -U test:tester -K testing stat`
#. `~/swift/.functests` (Note: functional tests will first delete
everything in the configured accounts.)
#. `~/swift/.probetests` (Note: probe tests will reset your
environment as they call `resetswift` for each test.)
----------------
Debugging Issues
----------------
If all doesn't go as planned, and tests fail, or you can't auth, or something doesn't work, here are some good starting places to look for issues:
#. Everything is logged using system facilities -- usually in /var/log/syslog,
but possibly in /var/log/messages on e.g. Fedora -- so that is a good first
place to look for errors (most likely python tracebacks).
#. Make sure all of the server processes are running. For the base
functionality, the Proxy, Account, Container, and Object servers
should be running.
#. If one of the servers are not running, and no errors are logged to syslog,
it may be useful to try to start the server manually, for example:
`swift-object-server /etc/swift/object-server/1.conf` will start the
object server. If there are problems not showing up in syslog,
then you will likely see the traceback on startup.
#. If you need to, you can turn off syslog for unit tests. This can be
useful for environments where /dev/log is unavailable, or which
cannot rate limit (unit tests generate a lot of logs very quickly).
Open the file SWIFT_TEST_CONFIG_FILE points to, and change the
value of fake_syslog to True.
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