mongodb_replicaset – Initialises a MongoDB replicaset

New in version 2.8.

Synopsis

  • Initialises a MongoDB replicaset in a new deployment.
  • Validates the replicaset name for existing deployments.

Requirements

The below requirements are needed on the host that executes this module.

  • pymongo

Parameters

Parameter Choices/Defaults Comments
arbiter_at_index
integer
Identifies the position of the member in the array that is an arbiter.
chaining_allowed
boolean
    Choices:
  • no
  • yes ←
When settings.chaining_allowed=true, the replicaset allows secondary members to replicate from other secondary members.
When settings.chaining_allowed=false, secondaries can replicate only from the primary.
election_timeout_millis
integer
Default:
10000
The time limit in milliseconds for detecting when a replicaset's primary is unreachable.
heartbeat_timeout_secs
integer
Default:
10
Number of seconds that the replicaset members wait for a successful heartbeat from each other.
If a member does not respond in time, other members mark the delinquent member as inaccessible.
The setting only applies when using protocol_version=0. When using protocol_version=1 the relevant setting is settings.election_timeout_millis.
login_database
string
Default:
"admin"
The database where login credentials are stored.
login_host
string
Default:
"localhost"
The MongoDB hostname.
login_password
string
The password to authenticate with.
login_port
integer
Default:
27017
The MongoDB port to login to.
login_user
string
The username to authenticate with.
members
list
A comma-separated string or a yaml list consisting of the replicaset members.
Supply as a simple csv string, i.e. mongodb1:27017,mongodb2:27017,mongodb3:27017.
If a port number is not provided then 27017 is assumed.
protocol_version
integer
    Choices:
  • 0
  • 1 ←
Version of the replicaset election protocol.
replica_set
string
Default:
"rs0"
Replicaset name.
ssl
boolean
    Choices:
  • no ←
  • yes
Whether to use an SSL connection when connecting to the database
ssl_cert_reqs
string
    Choices:
  • CERT_NONE
  • CERT_OPTIONAL
  • CERT_REQUIRED ←
Specifies whether a certificate is required from the other side of the connection, and whether it will be validated if provided.
validate
boolean
    Choices:
  • no
  • yes ←
Performs some basic validation on the provided replicaset config.

Notes

Note

Examples

# Create a replicaset called 'rs0' with the 3 provided members
- name: Ensure replicaset rs0 exists
  mongodb_replicaset:
    login_host: localhost
    login_user: admin
    login_password: admin
    replica_set: rs0
    members:
    - mongodb1:27017
    - mongodb2:27017
    - mongodb3:27017
  when: groups.mongod.index(inventory_hostname) == 0

# Create two single-node replicasets on the localhost for testing
- name: Ensure replicaset rs0 exists
  mongodb_replicaset:
    login_host: localhost
    login_port: 3001
    login_user: admin
    login_password: secret
    login_database: admin
    replica_set: rs0
    members: localhost:3001
    validate: no

- name: Ensure replicaset rs1 exists
  mongodb_replicaset:
    login_host: localhost
    login_port: 3002
    login_user: admin
    login_password: secret
    login_database: admin
    replica_set: rs1
    members: localhost:3002
    validate: no

Return Values

Common return values are documented here, the following are the fields unique to this module:

Key Returned Description
mongodb_replicaset
string
success
The name of the replicaset that has been created.



Status

Authors

  • Rhys Campbell (@rhysmeister)

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