community.general.redis – Various redis commands, replica and flush

Note

This plugin is part of the community.general collection (version 3.8.3).

You might already have this collection installed if you are using the ansible package. It is not included in ansible-core. To check whether it is installed, run ansible-galaxy collection list.

To install it, use: ansible-galaxy collection install community.general.

To use it in a playbook, specify: community.general.redis.

Synopsis

  • Unified utility to interact with redis instances.

Requirements

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

  • redis

Parameters

Parameter

Comments

command

string

The selected redis command

config ensures a configuration setting on an instance.

flush flushes all the instance or a specified db.

replica sets a redis instance in replica or master mode. (slave is an alias for replica.)

Choices:

  • config

  • flush

  • replica

  • slave

db

integer

The database to flush (used in db mode) [flush command]

flush_mode

string

Type of flush (all the dbs in a redis instance or a specific one) [flush command]

Choices:

  • all ← (default)

  • db

login_host

string

The host running the database

Default: “localhost”

login_password

string

The password used to authenticate with (usually not used)

login_port

integer

The port to connect to

Default: 6379

master_host

string

The host of the master instance [replica command]

master_port

integer

The port of the master instance [replica command]

name

string

A redis config key.

replica_mode

aliases: slave_mode

string

The mode of the redis instance [replica command]

slave is an alias for replica.

Choices:

  • master

  • replica ← (default)

  • slave

value

string

A redis config value. When memory size is needed, it is possible to specify it in the usal form of 1KB, 2M, 400MB where the base is 1024. Units are case insensitive i.e. 1m = 1mb = 1M = 1MB.

Notes

Note

  • Requires the redis-py Python package on the remote host. You can install it with pip (pip install redis) or with a package manager. https://github.com/andymccurdy/redis-py

  • If the redis master instance we are making replica of is password protected this needs to be in the redis.conf in the masterauth variable

See Also

See also

community.general.redis_info

The official documentation on the community.general.redis_info module.

Examples

- name: Set local redis instance to be a replica of melee.island on port 6377
  community.general.redis:
    command: replica
    master_host: melee.island
    master_port: 6377

- name: Deactivate replica mode
  community.general.redis:
    command: replica
    replica_mode: master

- name: Flush all the redis db
  community.general.redis:
    command: flush
    flush_mode: all

- name: Flush only one db in a redis instance
  community.general.redis:
    command: flush
    db: 1
    flush_mode: db

- name: Configure local redis to have 10000 max clients
  community.general.redis:
    command: config
    name: maxclients
    value: 10000

- name: Configure local redis maxmemory to 4GB
  community.general.redis:
    command: config
    name: maxmemory
    value: 4GB

- name: Configure local redis to have lua time limit of 100 ms
  community.general.redis:
    command: config
    name: lua-time-limit
    value: 100

Authors

  • Xabier Larrakoetxea (@slok)