community.general.consul_kv – Manipulate entries in the key/value store of a consul cluster

Note

This plugin is part of the community.general collection (version 2.5.1).

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

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

Synopsis

• Allows the retrieval, addition, modification and deletion of key/value entries in a consul cluster via the agent. The entire contents of the record, including the indices, flags and session are returned as value.

• If the key represents a prefix then note that when a value is removed, the existing value if any is returned as part of the results.

• See http://www.consul.io/docs/agent/http.html#kv for more details.

Requirements

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

• python-consul

• requests

Parameters

Parameter	Choices/Defaults	Comments
cas string		Used when acquiring a lock with a session. If the cas is 0, then Consul will only put the key if it does not already exist. If the cas value is non-zero, then the key is only set if the index matches the ModifyIndex of that key.
flags string		Opaque positive integer value that can be passed when setting a value.
host string	Default: "localhost"	Host of the consul agent.
key string / required		The key at which the value should be stored.
port integer	Default: 8500	The port on which the consul agent is running.
recurse boolean	Choices: no yes	If the key represents a prefix, each entry with the prefix can be retrieved by setting this to yes.
retrieve boolean	Choices: no yes ←	If the state is present and value is set, perform a read after setting the value and return this value.
scheme string	Default: "http"	The protocol scheme on which the consul agent is running.
session string		The session that should be used to acquire or release a lock associated with a key/value pair.
state string	Choices: absent acquire present ← release	The action to take with the supplied key and value. If the state is 'present' and `value` is set, the key contents will be set to the value supplied and `changed` will be set to `true` only if the value was different to the current contents. If the state is 'present' and `value` is not set, the existing value associated to the key will be returned. The state 'absent' will remove the key/value pair, again 'changed' will be set to true only if the key actually existed prior to the removal. An attempt can be made to obtain or free the lock associated with a key/value pair with the states 'acquire' or 'release' respectively. a valid session must be supplied to make the attempt changed will be true if the attempt is successful, false otherwise.
token string		The token key identifying an ACL rule set that controls access to the key value pair
validate_certs boolean	Choices: no yes ←	Whether to verify the tls certificate of the consul agent.
value string		The value should be associated with the given key, required if state is present.

Examples

# If the key does not exist, the value associated to the "data" property in `retrieved_key` will be `None`
# If the key value is empty string, `retrieved_key["data"]["Value"]` will be `None`
- name: Retrieve a value from the key/value store
  community.general.consul_kv:
    key: somekey
  register: retrieved_key

- name: Add or update the value associated with a key in the key/value store
  community.general.consul_kv:
    key: somekey
    value: somevalue

- name: Remove a key from the store
  community.general.consul_kv:
    key: somekey
    state: absent

- name: Add a node to an arbitrary group via consul inventory (see consul.ini)
  community.general.consul_kv:
    key: ansible/groups/dc1/somenode
    value: top_secret

- name: Register a key/value pair with an associated session
  community.general.consul_kv:
    key: stg/node/server_birthday
    value: 20160509
    session: "{{ sessionid }}"
    state: acquire

Authors

• Steve Gargan (@sgargan)

• Colin Nolan (@colin-nolan)