6.2.2. Configuring a High Availability Datastore

The OpenShift Origin Puppet module configures multiple datastore instances into a MongoDB replica set. If you choose to use an HA datastore, you must provide at least three datastore hosts and the total number of hosts must be odd.
Hosts that include the broker role must have the following additional information:

Example 6.6. Broker Host Configuration

class { 'openshift_origin' :
  # Other settings as appropriate per above examples
  ...

  # Include the MongoDB replica set information for Brokers
  mongodb_replicasets         => true,
  mongodb_replicasets_members => ['10.10.20.30:27071','10.10.20.31:27071','10.10.20.32:27071'],
}
Hosts that include the datastore role must have the following information:

Example 6.7. Datastore Configuration

class { 'openshift_origin' :
  # Other settings as appropriate per above examples
  ...

  # Set the datastore_hostname value to the current datastore host's name
  datastore_hostname => <this_datastore_hostname>,

  # Include the MongoDB replica set information
  mongodb_replicasets         => true,
  mongodb_replicasets_members => ['10.10.20.30:27071','10.10.20.31:27071','10.10.20.32:27071'],

  # One and only of the datastore hosts will be the primary
  mongodb_replica_primary => true|false,

  # All datastore hosts will know the primary's IP address and a
  # common replica key value
  mongodb_replica_primary_ip_addr = <primary_datastore_ip_addr>,
  mongodb_key                     = <replica_key_value>,
}