MongoDB

Ansible role to install and configure MongoDB.

Features:

• installs mongodb community edition
• updates mongodb config
• Creates replica set (without access control or authentication)

WARNING:

Ensure you quote and lowercase any booleans. Unfortunately, mongodb config options parser ONLY recognises "true" and "false" as boolean values. Any other variation (e.g. True, False, etc) is seen as a string and will result in parser failure on mongod start.

(See: https://github.com/mongodb/mongo/blob/master/src/mongo/util/options_parser/options_parser.cpp)

Example

MongoDB Standalone installation

  vars:
    mongodb_net:
      port: 27017
      bindIp: "{{ ansible_eth1.ipv4.address }}"

  roles:
    - ilanco.mongodb

MongoDB Replica Set installation

- hosts: node1.internal				# SECONDARY

  vars:
    mongodb_net:
      port: 27017
      bindIp: "{{ ansible_eth0.ipv4.address }}"
    mongodb_replication:
      replSetName: rs0
    mongodb_is_primary: false
    mongodb_replica_set_members: [ "node0.internal:27017", "node1.internal:27017" ]

  roles:
    - ilanco.mongodb


- hosts: node0.internal				# PRIMARY

  vars:
    mongodb_net:
      port: 27017
      bindIp: "{{ ansible_eth0.ipv4.address }}"
    mongodb_replication:
      replSetName: rs0
    mongodb_is_primary: true
    mongodb_create_replica_set: true
    mongodb_replica_set_members: [ "node0.internal:27017", "node1.internal:27017" ]

  roles:
    - ilanco.mongodb

It is recommended that your replica set members have resolveable names. So use FQDN for each replica set member (not IP, especially in production).

ToDo:

• Sharding
• mongos
• authentication