Puppet Keepalived

Build status

Requirements

• concat module

Tested on...

• Debian 7 (Wheezy)
• 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' ],
    track_interface   => ['eth1','tun0'], # optional, monitor these interfaces.
  }
}

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' ],
    track_interface   => ['eth1','tun0'], # optional, monitor these interfaces.
  }
}

Add floating routes

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' ],
    virtual_routes    => [ { to  => '168.168.2.0/24', via => '10.0.0.2' },
                           { to  => '168.168.3.0/24', via => '10.0.0.3' } ]
  }
}

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',
  }
}

Global definitions

class { 'keepalived::global_defs':
  ensure                  => present,
  notification_email      => 'no@spam.tld',
  notification_email_from => 'no@spam.tld',
  smtp_server             => 'localhost',
  smtp_connect_timeout    => '60',
  router_id               => 'your_router_instance_id',
}

Opt out of having the service managed by the module

class { '::keepalived':
  service_manage => false,
}

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