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swift/doc/source/development_saio.rst

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=======================
SAIO - Swift All In One
=======================
-----------------------------------
Instructions for seting up a dev VM
-----------------------------------
This documents setting up a virtual machine for doing Swift development. The
virtual machine will emulate running a four node Swift cluster. It assumes
you're using *VMware Fusion 3* on *Mac OS X Snow Leopard*, but should give a
good idea what to do on other environments.
* Get the *Ubuntu 10.04 LTS (Lucid Lynx)* server image from:
http://cdimage.ubuntu.com/releases/10.04/release/ubuntu-10.04-dvd-amd64.iso
* Create guest virtual machine:
#. `Continue without disc`
#. `Use operating system installation disc image file`, pick the .iso
from above.
#. Select `Linux` and `Ubuntu 64-bit`.
#. Fill in the *Linux Easy Install* details.
#. `Customize Settings`, name the image whatever you want
(`SAIO` for instance.)
#. When the `Settings` window comes up, select `Hard Disk`, create an
extra disk (the defaults are fine).
#. Start the virtual machine up and wait for the easy install to
finish.
* As root on guest (you'll have to log in as you, then `sudo su -`):
#. `apt-get install python-software-properties`
#. `add-apt-repository ppa:swift-core/ppa`
#. `apt-get update`
#. `apt-get install curl gcc bzr memcached python-configobj
python-coverage python-dev python-nose python-setuptools python-simplejson
python-xattr sqlite3 xfsprogs python-webob python-eventlet
python-greenlet`
#. Install anything else you want, like screen, ssh, vim, etc.
#. `fdisk /dev/sdb` (set up a single partition)
#. `mkfs.xfs -i size=1024 /dev/sdb1`
#. `mkdir /mnt/sdb1`
#. Edit `/etc/fstab` and add
`/dev/sdb1 /mnt/sdb1 xfs noatime,nodiratime,nobarrier,logbufs=8 0 0`
#. `mount /mnt/sdb1`
#. `mkdir /mnt/sdb1/1 /mnt/sdb1/2 /mnt/sdb1/3 /mnt/sdb1/4 /mnt/sdb1/test`
#. `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 /var/run/swift
chown <your-user-name>:<your-user-name> /var/run/swift
#. Create /etc/rsyncd.conf::
uid = <Your user name>
gid = <Your group name>
log file = /var/log/rsyncd.log
pid file = /var/run/rsyncd.pid
[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
#. Edit the following line in /etc/default/rsync::
RSYNC_ENABLE=true
#. `service rsync restart`
* As you on guest:
#. `mkdir ~/bin`
#. Create `~/.bazaar/bazaar.conf`::
[DEFAULT]
email = Your Name <your-email-address>
#. If you are using launchpad to get the code or make changes, run
`bzr launchpad-login <launchpad_id>`
#. Create the swift repo with `bzr init-repo swift`
#. Check out your bzr branch of swift, for example:
`cd ~/swift; bzr branch lp:swift trunk`
#. `cd ~/swift/trunk; sudo python setup.py develop`
#. Edit `~/.bashrc` and add to the end::
export PATH_TO_TEST_XFS=/mnt/sdb1/test
export SWIFT_TEST_CONFIG_FILE=/etc/swift/func_test.conf
export PATH=${PATH}:~/bin
#. `. ~/.bashrc`
#. Create `/etc/swift/auth-server.conf`::
[auth-server]
default_cluster_url = http://127.0.0.1:8080/v1
user = <your-user-name>
#. Create `/etc/swift/proxy-server.conf`::
[proxy-server]
bind_port = 8080
user = <your-user-name>
#. Create `/etc/swift/account-server/1.conf`::
[account-server]
devices = /srv/1/node
mount_check = false
bind_port = 6012
user = <your-user-name>
[account-replicator]
vm_test_mode = yes
[account-auditor]
[account-reaper]
#. Create `/etc/swift/account-server/2.conf`::
[account-server]
devices = /srv/2/node
mount_check = false
bind_port = 6022
user = <your-user-name>
[account-replicator]
vm_test_mode = yes
[account-auditor]
[account-reaper]
#. Create `/etc/swift/account-server/3.conf`::
[account-server]
devices = /srv/3/node
mount_check = false
bind_port = 6032
user = <your-user-name>
[account-replicator]
vm_test_mode = yes
[account-auditor]
[account-reaper]
#. Create `/etc/swift/account-server/4.conf`::
[account-server]
devices = /srv/4/node
mount_check = false
bind_port = 6042
user = <your-user-name>
[account-replicator]
vm_test_mode = yes
[account-auditor]
[account-reaper]
#. Create `/etc/swift/container-server/1.conf`::
[container-server]
devices = /srv/1/node
mount_check = false
bind_port = 6011
user = <your-user-name>
[container-replicator]
vm_test_mode = yes
[container-updater]
[container-auditor]
#. Create `/etc/swift/container-server/2.conf`::
[container-server]
devices = /srv/2/node
mount_check = false
bind_port = 6021
user = <your-user-name>
[container-replicator]
vm_test_mode = yes
[container-updater]
[container-auditor]
#. Create `/etc/swift/container-server/3.conf`::
[container-server]
devices = /srv/3/node
mount_check = false
bind_port = 6031
user = <your-user-name>
[container-replicator]
vm_test_mode = yes
[container-updater]
[container-auditor]
#. Create `/etc/swift/container-server/4.conf`::
[container-server]
devices = /srv/4/node
mount_check = false
bind_port = 6041
user = <your-user-name>
[container-replicator]
vm_test_mode = yes
[container-updater]
[container-auditor]
#. Create `/etc/swift/object-server/1.conf`::
[object-server]
devices = /srv/1/node
mount_check = false
bind_port = 6010
user = <your-user-name>
[object-replicator]
vm_test_mode = yes
[object-updater]
[object-auditor]
#. Create `/etc/swift/object-server/2.conf`::
[object-server]
devices = /srv/2/node
mount_check = false
bind_port = 6020
user = <your-user-name>
[object-replicator]
vm_test_mode = yes
[object-updater]
[object-auditor]
#. Create `/etc/swift/object-server/3.conf`::
[object-server]
devices = /srv/3/node
mount_check = false
bind_port = 6030
user = <your-user-name>
[object-replicator]
vm_test_mode = yes
[object-updater]
[object-auditor]
#. Create `/etc/swift/object-server/4.conf`::
[object-server]
devices = /srv/4/node
mount_check = false
bind_port = 6040
user = <your-user-name>
[object-replicator]
vm_test_mode = yes
[object-updater]
[object-auditor]
#. Create `~/bin/resetswift`::
#!/bin/bash
swift-init all stop
sleep 5
sudo umount /mnt/sdb1
sudo mkfs.xfs -f -i size=1024 /dev/sdb1
sudo mount /mnt/sdb1
sudo mkdir /mnt/sdb1/1 /mnt/sdb1/2 /mnt/sdb1/3 /mnt/sdb1/4 /mnt/sdb1/test
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
sudo service rsyslog restart
sudo service memcached restart
#. Create `~/bin/remakerings`::
#!/bin/bash
cd /etc/swift
rm *.builder *.ring.gz backups/*.builder backups/*.ring.gz
swift-ring-builder object.builder create 18 3 1
swift-ring-builder object.builder add z1-127.0.0.1:6010/sdb1 1
swift-ring-builder object.builder add z2-127.0.0.1:6020/sdb2 1
swift-ring-builder object.builder add z3-127.0.0.1:6030/sdb3 1
swift-ring-builder object.builder add z4-127.0.0.1:6040/sdb4 1
swift-ring-builder object.builder rebalance
swift-ring-builder container.builder create 18 3 1
swift-ring-builder container.builder add z1-127.0.0.1:6011/sdb1 1
swift-ring-builder container.builder add z2-127.0.0.1:6021/sdb2 1
swift-ring-builder container.builder add z3-127.0.0.1:6031/sdb3 1
swift-ring-builder container.builder add z4-127.0.0.1:6041/sdb4 1
swift-ring-builder container.builder rebalance
swift-ring-builder account.builder create 18 3 1
swift-ring-builder account.builder add z1-127.0.0.1:6012/sdb1 1
swift-ring-builder account.builder add z2-127.0.0.1:6022/sdb2 1
swift-ring-builder account.builder add z3-127.0.0.1:6032/sdb3 1
swift-ring-builder account.builder add z4-127.0.0.1:6042/sdb4 1
swift-ring-builder account.builder rebalance
#. Create `~/bin/startmain`::
#!/bin/bash
swift-init auth-server start
swift-init proxy-server start
swift-init account-server start
swift-init container-server start
swift-init object-server start
#. Create `~/bin/startrest`::
#!/bin/bash
swift-auth-recreate-accounts
swift-init object-updater start
swift-init container-updater start
swift-init object-replicator start
swift-init container-replicator start
swift-init account-replicator start
swift-init object-auditor start
swift-init container-auditor start
swift-init account-auditor start
swift-init account-reaper start
#. `chmod +x ~/bin/*`
#. `remakerings`
#. `cd ~/swift/trunk; ./.unittests`
#. `startmain` (The ``Unable to increase file descriptor limit. Running as non-root?`` warnings are expected and ok.)
#. `swift-auth-create-account test tester testing`
#. Get an `X-Storage-Url` and `X-Auth-Token`: ``curl -v -H 'X-Storage-User: test:tester' -H 'X-Storage-Pass: testing' http://127.0.0.1:11000/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 `st` works: `st -A http://127.0.0.1:11000/v1.0 -U test:tester -K testing stat`
#. Create `/etc/swift/func_test.conf`::
auth_host = 127.0.0.1
auth_port = 11000
auth_ssl = no
account = test
username = tester
password = testing
collate = C
#. `cd ~/swift/trunk; ./.functests`
#. `cd ~/swift/trunk; ./.probetests`
If you plan to work on documentation (and who doesn't?!):
#. `sudo apt-get install python-sphinx`
#. `cd ~/swift/doc`
#. `make html`
----------------
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 in /var/log/syslog, 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, Object and Auth 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.
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