OVH IP failover

This Puppet module is meant to ease the implementation of multiple network interfaces on a server and leverage special network solutions offered by the hosting company OVH.

Network interface via RedHat type network script

• General network interface, private/public.
• Virtual interfaces, included the ones offered by OVH as part of their vRack solution.

Manage a failover IP from OVH via an init script

• Wraps underlying calls to the OVH API to control the routing destination of the IP (works between different data centers).
• Can control virtual interface state regardless of subnet which isn't possible with OCF scripts such as RedHat's rgmanager.

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Example

You can manage in a single definition a virtual interface with failover capability provided by OVH. Apply the definition on serverB by just changing the destination_fqdn to "serverA" and device name if differently mapped.

 class { 'ovhipfailover':
       ipaddress => "x.x.x.x",
       device => "ethX:X",
       destination_fqdn => "serverB.domain.com",
       application_key => "",
       application_secret => "",
       consumer_key => "",
 }

To obtain a consumer key to use on the OVH API after creating an application key and secret, use the embedded Python script. Calling the script will return a consumer key and a link to the validation url, you should choose an "illimited" time validity for your consumer key.

./ovh_ip_failover.py POST /auth/credential <APPLICATION_KEY> <APPLICATION_SECRET>

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By using the failover init script in a cluster resource manager such as rgmanager or Pacemaker, a true HA solution can be implemented across multiple OVH datacenters. No extra parameter is needed to call the script as a standard init script resource.