community.mongodb.mongodb_balancer – Manages the MongoDB Sharded Cluster Balancer.

Note

This plugin is part of the community.mongodb collection (version 1.2.0).

To install it use: ansible-galaxy collection install community.mongodb.

To use it in a playbook, specify: community.mongodb.mongodb_balancer.

New in version 1.0.0: of community.mongodb

Synopsis

• Manages the MongoDB Sharded Cluster Balancer.

• Start or stop the balancer.

• Adjust the cluster chunksize.

• Enable or disable autosplit.

• Adds or remove a balancer window.

Requirements

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

• pymongo

Parameters

Parameter	Choices/Defaults	Comments
auth_mechanism string	Choices: SCRAM-SHA-256 SCRAM-SHA-1 MONGODB-X509 GSSAPI PLAIN	Authentication type.
autosplit boolean	Choices: no yes	Disable or enable the autosplit flag in the config.settings collection.
chunksize integer		Control the size of chunks in the sharded cluster. Value should be given in MB.
connection_options list / elements=raw		Additional connection options. Supply as a list of dicts or strings containing key value pairs seperated with '='.
login_database string	Default: "admin"	The database where login credentials are stored.
login_host string	Default: "localhost"	The host running MongoDB instance to login to.
login_password string		The password used to authenticate with. Required when login_user is specified.
login_port integer	Default: 27017	The MongoDB server port to login to.
login_user string		The MongoDB user to login with. Required when login_password is specified.
mongos_process string	Default: "mongos"	Provide a custom name for the mongos process. Most users can ignore this setting.
ssl boolean	Choices: no ← yes	Whether to use an SSL connection when connecting to the database.
ssl_ca_certs string		The ssl_ca_certs option takes a path to a CA file.
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.
ssl_certfile string		Present a client certificate using the ssl_certfile option.
ssl_crlfile string		The ssl_crlfile option takes a path to a CRL file.
ssl_keyfile string		Private key for the client certificate.
ssl_pem_passphrase string		Passphrase to decrypt encrypted private keys.
state string	Choices: started ← stopped	Manage the Balancer for the Cluster
window raw		Schedule the balancer window. Provide the following dictionary keys start, stop, state The state key should be "present" or "absent". The start and stop keys are ignored when state is "absent". start and stop should be strings in "HH:MM" format indicating the time bounds of the window.

Notes

Note

• Requires the pymongo Python package on the remote host, version 2.4.2+. This can be installed using pip or the OS package manager. @see http://api.mongodb.org/python/current/installation.html

Examples

- name: Start the balancer
  community.mongodb.mongodb_balancer:
    state: started

- name: Stop the balancer and disable autosplit
  community.mongodb.mongodb_balancer:
    state: stopped
    autosplit: false

- name: Enable autosplit
  community.mongodb.mongodb_balancer:
    autosplit: true

- name: Change the default chunksize to 128MB
  community.mongodb.mongodb_balancer:
    chunksize: 128

- name: Add or update a balancing window
  community.mongodb.mongodb_balancer:
    window:
      start: "23:00"
      stop: "06:00"
      state: "present"

- name: Remove a balancing window
  community.mongodb.mongodb_balancer:
    window:
      state: "absent"

Return Values

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

Key	Returned	Description
changed boolean	success	Whether the balancer state or autosplit changed.
failed boolean	failed	If something went wrong
msg string	failure	A short description of what happened.
new_autosplit string	When autosplit is changed.	The new state of autosplit.
new_balancer_state string	When balancer state is changed	The new state of the balancer.
new_chunksize integer	When chunksize is changed.	The new value for chunksize.
old_autosplit string	When autosplit is changed.	The previous state of autosplit.
old_balancer_state string	When balancer state is changed	The previous state of the balancer
old_chunksize integer	When chunksize is changed.	The previous value for chunksize.

Authors

• Rhys Campbell (@rhysmeister)