community.general.postgresql_membership – Add or remove PostgreSQL roles from groups

Note

This plugin is part of the community.general collection (version 1.3.6).

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

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

Synopsis

• Adds or removes PostgreSQL roles from groups (other roles).

• Users are roles with login privilege.

• Groups are PostgreSQL roles usually without LOGIN privilege.

• Common use case:

• 1. add a new group (groups) by community.general.postgresql_user module with role_attr_flags=NOLOGIN

• 2. grant them desired privileges by community.general.postgresql_privs module

• 3. add desired PostgreSQL users to the new group (groups) by this module

Requirements

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

• psycopg2

Parameters

Parameter	Choices/Defaults	Comments
ca_cert string		Specifies the name of a file containing SSL certificate authority (CA) certificate(s). If the file exists, the server's certificate will be verified to be signed by one of these authorities. aliases: ssl_rootcert
db string		Name of database to connect to. aliases: login_db
fail_on_role boolean	Choices: no yes ←	If yes, fail when group or target_role doesn't exist. If no, just warn and continue.
groups list / elements=string / required		The list of groups (roles) that need to be granted to or revoked from target_roles. aliases: group, source_role, source_roles
login_host string		Host running the database.
login_password string		The password used to authenticate with.
login_unix_socket string		Path to a Unix domain socket for local connections.
login_user string	Default: "postgres"	The username used to authenticate with.
port integer	Default: 5432	Database port to connect to. aliases: login_port
session_role string		Switch to session_role after connecting. The specified session_role must be a role that the current login_user is a member of. Permissions checking for SQL commands is carried out as though the session_role were the one that had logged in originally.
ssl_mode string	Choices: allow disable prefer ← require verify-ca verify-full	Determines whether or with what priority a secure SSL TCP/IP connection will be negotiated with the server. See https://www.postgresql.org/docs/current/static/libpq-ssl.html for more information on the modes. Default of prefer matches libpq default.
state string	Choices: absent present ←	Membership state. state=present implies the groupsmust be granted to target_roles. state=absent implies the groups must be revoked from target_roles.
target_roles list / elements=string / required		The list of target roles (groups will be granted to them). aliases: target_role, users, user
trust_input boolean added in 0.2.0 of community.general	Choices: no yes ←	If no, check whether values of parameters groups, target_roles, session_role are potentially dangerous. It makes sense to use no only when SQL injections via the parameters are possible.

Notes

Note

• The default authentication assumes that you are either logging in as or sudo’ing to the postgres account on the host.

• To avoid “Peer authentication failed for user postgres” error, use postgres user as a become_user.

• This module uses psycopg2, a Python PostgreSQL database adapter. You must ensure that psycopg2 is installed on the host before using this module.

• If the remote host is the PostgreSQL server (which is the default case), then PostgreSQL must also be installed on the remote host.

• For Ubuntu-based systems, install the postgresql, libpq-dev, and python-psycopg2 packages on the remote host before using this module.

• The ca_cert parameter requires at least Postgres version 8.4 and psycopg2 version 2.4.3.

See Also

See also

community.general.postgresql_user

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

community.general.postgresql_privs

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

community.general.postgresql_owner

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

PostgreSQL role membership reference

Complete reference of the PostgreSQL role membership documentation.

PostgreSQL role attributes reference

Complete reference of the PostgreSQL role attributes documentation.

Examples

- name: Grant role read_only to alice and bob
  community.general.postgresql_membership:
    group: read_only
    target_roles:
    - alice
    - bob
    state: present

# you can also use target_roles: alice,bob,etc to pass the role list

- name: Revoke role read_only and exec_func from bob. Ignore if roles don't exist
  community.general.postgresql_membership:
    groups:
    - read_only
    - exec_func
    target_role: bob
    fail_on_role: no
    state: absent

Return Values

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

Key	Returned	Description
granted dictionary	if state=present	Dict of granted groups and roles. Sample: {'ro_group': ['alice', 'bob']}
queries string	always	List of executed queries. Sample: ['GRANT "user_ro" TO "alice"']
revoked dictionary	if state=absent	Dict of revoked groups and roles. Sample: {'ro_group': ['alice', 'bob']}
state string	always	Membership state that tried to be set. Sample: present

Authors

• Andrew Klychkov (@Andersson007)