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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:
    1. Continue without disc
    2. Use operating system installation disc image file, pick the .iso from above.
    3. Select Linux and Ubuntu 64-bit.
    4. Fill in the Linux Easy Install details.
    5. Customize Settings, name the image whatever you want (SAIO for instance.)
    6. When the Settings window comes up, select Hard Disk, create an extra disk (the defaults are fine).
    7. 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 -):

    1. apt-get install python-software-properties

    2. add-apt-repository ppa:swift-core/ppa

    3. apt-get update

    4. 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

    5. Install anything else you want, like screen, ssh, vim, etc.

    6. fdisk /dev/sdb (set up a single partition)

    7. mkfs.xfs -i size=1024 /dev/sdb1

    8. mkdir /mnt/sdb1

    9. Edit /etc/fstab and add /dev/sdb1 /mnt/sdb1 xfs noatime,nodiratime,nobarrier,logbufs=8 0 0

    10. mount /mnt/sdb1

    11. mkdir /mnt/sdb1/1 /mnt/sdb1/2 /mnt/sdb1/3 /mnt/sdb1/4 /mnt/sdb1/test

    12. chown <your-user-name>:<your-group-name> /mnt/sdb1/*

    13. mkdir /srv

    14. for x in {1..4}; do ln -s /mnt/sdb1/$x /srv/$x; done

    15. 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

    16. 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]/

    17. Add to /etc/rc.local (before the exit 0):

      mkdir /var/run/swift
chown <your-user-name>:<your-user-name> /var/run/swift

    18. 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

    19. Edit the following line in /etc/default/rsync:

      RSYNC_ENABLE=true

    20. service rsync restart

  • As you on guest:

    1. mkdir ~/bin

    2. Create `~/.bazaar/bazaar.conf`:

      [DEFAULT]
        email = Your Name <your-email-address>

    3. If you are using launchpad to get the code or make changes, run bzr launchpad-login <launchpad_id>

    4. Create the swift repo with bzr init-repo swift

    5. Check out your bzr branch of swift, for example: cd ~/swift; bzr branch lp:swift trunk

    6. cd ~/swift/trunk; sudo python setup.py develop

    7. 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

    8. . ~/.bashrc

    9. Create `/etc/swift/auth-server.conf`:

      [auth-server]
default_cluster_url = http://127.0.0.1:8080/v1
user = <your-user-name>

    10. Create `/etc/swift/proxy-server.conf`:

      [proxy-server]
bind_port = 8080
user = <your-user-name>

    11. 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]

    12. 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]

    13. 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]

    14. 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]

    15. 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]

    16. 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]

    17. 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]

    18. 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]

    19. 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]

    20. 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]

    21. 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]

    22. 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]

    23. 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

    24. 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

    25. 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

    26. 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

    27. chmod +x ~/bin/*

    28. remakerings

    29. cd ~/swift/trunk; ./.unittests

    30. startmain (The Unable to increase file descriptor limit. Running as non-root? warnings are expected and ok.)

    31. swift-auth-create-account test tester testing

    32. 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

    33. Check that you can GET account: curl -v -H 'X-Auth-Token: <token-from-x-auth-token-above>' <url-from-x-storage-url-above>

    34. Check that st works: st -A http://127.0.0.1:11000/v1.0 -U test:tester -K testing stat

    35. 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

    36. cd ~/swift/trunk; ./.functests

    37. cd ~/swift/trunk; ./.probetests

If you plan to work on documentation (and who doesn't?!):

  1. sudo apt-get install python-sphinx
  2. cd ~/swift/doc
  3. 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:

  1. Everything is logged in /var/log/syslog, so that is a good first place to look for errors (most likely python tracebacks).
  2. Make sure all of the server processes are running. For the base functionality, the Proxy, Account, Container, Object and Auth servers should be running
  3. 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.