Introduction

This module provides a way to install and configure Swift storage clusters using puppet. The classes documented in this file will deploy Swift using best practices for a typical deployment.

Both single host and clustered configurations are supported.

Tested Environments

• Ubuntu 12.04; puppet 2.7.16; Swift 1.4.8

Requirements

This module uses exported resources to manage Swift rings, so you will need to have storeconfigs enabled for this module to work. See:

http://projects.puppetlabs.com/projects/1/wiki/using_stored_configuration http://docs.puppetlabs.com/guides/exported_resources.html

Also, since the module includes custom types and providers, make sure that pluginsync is enabled in master and agent configurations:

root@ubuntu:~# cat /etc/puppet/puppet.conf 
[main]
logdir=/var/log/puppet
vardir=/var/lib/puppet
ssldir=/var/lib/puppet/ssl
rundir=/var/run/puppet
factpath=$vardir/lib/facter
templatedir=$confdir/templates
prerun_command=/etc/puppet/etckeeper-commit-pre
postrun_command=/etc/puppet/etckeeper-commit-post
pluginsync = true

See http://docs.puppetlabs.com/guides/plugins_in_modules.html

Dependencies

• https://github.com/saz/puppet-ssh
• https://github.com/puppetlabs/puppetlabs-rsync
• https://github.com/saz/puppet-memcached
• https://github.com/puppetlabs/puppetlabs-stdlib

Usage:

swift:

class that sets up base packages and the base /etc/swift/swift.conf.

class { 'swift':
  # shared salt used when hashing ring mappings
  swift_hash_suffix => 'shared_secret',
}

swift::proxy:

class that installs and configures the swift proxy server

class { 'swift::proxy':
  # specifies that account should be automatically created
  # this should be set to true when tempauth is used
  account_autocreate = true,
  proxy_local_net_ip = $ipaddress_eth1,
  #proxy_port = '11211',
  # auth type defaults to tempauth - this is the
  # only auth that has been tested
  #auth_type = 'tempauth',
}

swift::storage

class that sets up all of the configuration and dependencies for swift storage server instances

class { 'swift::storage':
  # address that swift should bind to
  storage_local_net_ip => $ipaddress_eth1,
  devices              => '/srv/node'
}

swift::storage::server

Defined resource type that can be used to create a swift storage server instance. In general, you do not need to explicity specify your server instances (as the swift::storage::class will create them for you)

This will configure an rsync server instance and swift storage instance to manage the all devices in the devices directory.

# the title for this server and the port where it
# will be hosted
swift::storage::server { '6010':
  # the type of device (account/object/container)
  type => 'object',
  # directory where device is mounted
  devices => '/srv/node',
  # address to bind to
  storage_local_net_ip => '127.0.0.1'
}

swift::storage::loopback

This defined resource was created to test swift by creating loopback devices that can be used for testing

It creates a partition of size [$seek] at base_dir/[$name] using dd with [$byte_size], formats it to be an xfs filesystem which is mounted at [$mnt_base_dir]/[$name]

It then creates swift::storage::devices for each device type using the title as the 3rd digit of a four digit port number :60[digit][role] (object = 0, container = 1, account = 2)

swift::storage::loopback { '1':
  base_dir  => '/srv/loopback-device',
  mnt_base_dir => '/srv/node',
  byte_size => '1024',
  seek      => '25000',
  storage_local_net_ip => '127.0.0.1'

}

swift::ringbuiler

class that knows how to build rings.

Creates the initial rings, collects any exported resources, and rebalances the ring if it is updated.

  class { 'swift::ringbuilder':
    part_power     => '18',
    replicas       => '3',
    min_part_hours => '1',
  }

Example

For an example of how to use this module to build out a single node swift cluster, you can have a look at examples/all.pp

This example can be used as follows:

puppet apply examples/all.pp      # swift specific roles

For an example of how to use this module to build out a multi node swift cluster, you can have a look at examples/site.pp. This file assumes you have a puppetmaster with storeconfigs enabled.

NOTE: this example file uses hiera to set the configurable data values. Hiera should work by default with Puppet 3.0.

Hiera is initiated by the calls to hiera at the beginning of the example file. Feel free to comment out these lines and use the commented out regular variable assigments if you do not feel like setting up hiera on Puppet < 3.0.

Please note that if you create fewer than 3 storage nodes, you will need to edit the replicas parameter of the swift::ringbuilder instance in the proxy node definition.

Once your puppetmaster is configured, you can provision your nodes with:

puppet agent -t --certname my_role

Verifying installation

This module also comes with a simple Ruby script that validates rather or not your swift cluster is functional.

The script can be run as:

ruby files/swift_tester.rb