Puppet Keepalived

Build status

Requirements

• concat module

Tested on...

• Debian 6 (Squeeze)
• RHEL 6

Example usage

Basic IP-based VRRP failover

This configuration will fail-over when:

a. Master node is unavailable

node /node01/ {
  include keepalived

  keepalived::vrrp::instance { 'VI_50':
    interface         => 'eth1',
    state             => 'MASTER',
    virtual_router_id => '50',
    priority          => '101',
    auth_type         => 'PASS',
    auth_pass         => 'secret',
    virtual_ipaddress => '10.0.0.1/29',
  }
}

node /node02/ {
  include keepalived

  keepalived::vrrp::instance { 'VI_50':
    interface         => 'eth1',
    state             => 'BACKUP',
    virtual_router_id => '50',
    priority          => '100',
    auth_type         => 'PASS',
    auth_pass         => 'secret',
    virtual_ipaddress => '10.0.0.1/29',
  }
}

Detect application level failure

This configuration will fail-over when:

a. NGinX daemon is not running
b. Master node is unavailable

node /node01/ {
  include keepalived

  keepalived::vrrp::script { 'check_nginx':
    script => '/usr/bin/killall -0 nginx',
  }

  keepalived::vrrp::instance { 'VI_50':
    interface         => 'eth1',
    state             => 'MASTER',
    virtual_router_id => '50',
    priority          => '101',
    auth_type         => 'PASS',
    auth_pass         => 'secret',
    virtual_ipaddress => '10.0.0.1/29',
    track_script      => 'check_nginx',
  }
}

node /node02/ {
  include keepalived

  keepalived::vrrp::script { 'check_nginx':
    script => '/usr/bin/killall -0 nginx',
  }

  keepalived::vrrp::instance { 'VI_50':
    interface         => 'eth1',
    state             => 'BACKUP',
    virtual_router_id => '50',
    priority          => '100',
    auth_type         => 'PASS',
    auth_pass         => 'secret',
    virtual_ipaddress => '10.0.0.1/29',
    track_script      => 'check_nginx',
  }
}

Unit testing

Plain RSpec:

$ rake spec

Using bundle:

$ bundle exec rake spec

Test against a specific Puppet or Facter version:

$ PUPPET_VERSION=3.2.1  bundle update && bundle exec rake spec
$ PUPPET_VERSION=2.7.19 bundle update && bundle exec rake spec
$ FACTER_VERSION=1.6.8  bundle update && bundle exec rake spec