community.general.etcd3 lookup – Get key values from etcd3 server

Note

This lookup plugin is part of the community.general collection (version 9.5.1).

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. You need further requirements to be able to use this lookup plugin, see Requirements for details.

To use it in a playbook, specify: community.general.etcd3.

New in community.general 0.2.0

Synopsis

Requirements

The below requirements are needed on the local controller node that executes this lookup.

  • etcd3 >= 0.10

Terms

Parameter

Comments

Terms

list / elements=string / required

The list of keys (or key prefixes) to look up on the etcd3 server.

Keyword parameters

This describes keyword parameters of the lookup. These are the values key1=value1, key2=value2 and so on in the following examples: lookup('community.general.etcd3', key1=value1, key2=value2, ...) and query('community.general.etcd3', key1=value1, key2=value2, ...)

Parameter

Comments

ca_cert

string

etcd3 CA authority.

Configuration:

cert_cert

string

etcd3 client certificate.

Configuration:

cert_key

string

etcd3 client private key.

Configuration:

endpoints

string

Counterpart of ETCDCTL_ENDPOINTS environment variable. Specify the etcd3 connection with and URL form, for example https://hostname:2379, or <host>:<port> form.

The host part is overwritten by host option, if defined.

The port part is overwritten by port option, if defined.

Default: "127.0.0.1:2379"

Configuration:

host

string

etcd3 listening client host.

Takes precedence over endpoints.

password

string

Authenticated user password.

Configuration:

port

integer

etcd3 listening client port.

Takes precedence over endpoints.

prefix

boolean

Look for key or prefix key.

Choices:

  • false ← (default)

  • true

timeout

integer

Client timeout.

Default: 60

Configuration:

user

string

Authenticated user name.

Configuration:

Notes

Note

  • When keyword and positional parameters are used together, positional parameters must be listed before keyword parameters: lookup('community.general.etcd3', term1, term2, key1=value1, key2=value2) and query('community.general.etcd3', term1, term2, key1=value1, key2=value2)

  • host and port options take precedence over (endpoints) option.

  • The recommended way to connect to etcd3 server is using ETCDCTL_ENDPOINT environment variable and keep endpoints, host, and port unused.

See Also

See also

community.general.etcd3

Set or delete key value pairs from an etcd3 cluster.

community.general.etcd lookup plugin

get info from an etcd server.

Examples

- name: "a value from a locally running etcd"
  ansible.builtin.debug:
    msg: "{{ lookup('community.general.etcd3', 'foo/bar') }}"

- name: "values from multiple folders on a locally running etcd"
  ansible.builtin.debug:
    msg: "{{ lookup('community.general.etcd3', 'foo', 'bar', 'baz') }}"

- name: "look for a key prefix"
  ansible.builtin.debug:
    msg: "{{ lookup('community.general.etcd3', '/foo/bar', prefix=True) }}"

- name: "connect to etcd3 with a client certificate"
  ansible.builtin.debug:
    msg: "{{ lookup('community.general.etcd3', 'foo/bar', cert_cert='/etc/ssl/etcd/client.pem', cert_key='/etc/ssl/etcd/client.key') }}"

Return Value

Key

Description

Return value

list / elements=dictionary

List of keys and associated values.

Returned: success

key

string

The element’s key.

Returned: success

value

string

The element’s value.

Returned: success

Authors

  • Eric Belhomme (@eric-belhomme)

Hint

Configuration entries for each entry type have a low to high priority order. For example, a variable that is lower in the list will override a variable that is higher up.