community.postgresql.postgresql_subscription – Add, update, or remove PostgreSQL subscription

Note

This plugin is part of the community.postgresql collection (version 1.4.0).

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

To use it in a playbook, specify: community.postgresql.postgresql_subscription.

New in version 0.2.0: of community.postgresql

Synopsis

  • Add, update, or remove PostgreSQL subscription.

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
cascade
boolean
    Choices:
  • no ←
  • yes
Drop subscription dependencies. Has effect with state=absent only.
Ignored when state is not absent.
connparams
dictionary
The connection dict param-value to connect to the publisher.
Ignored when state is not present.
db
string / required
Name of the database to connect to and where the subscription state will be changed.

aliases: login_db
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.
name
string / required
Name of the subscription to add, update, or remove.
owner
string
Subscription owner.
If owner is not defined, the owner will be set as login_user or session_role.
Ignored when state is not present.
port
integer
Default:
5432
Database port to connect to.

aliases: login_port
publications
list / elements=string
The publication names on the publisher to use for the subscription.
Ignored when state is not present.
session_role
string
added in 0.2.0 of community.postgresql
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.
Default of prefer matches libpq default.
state
string
    Choices:
  • absent
  • present ←
  • refresh
The subscription state.
present implies that if name subscription doesn't exist, it will be created.
absent implies that if name subscription exists, it will be removed.
refresh implies that if name subscription exists, it will be refreshed. Fetch missing table information from publisher. Always returns ``changed`` is ``True``. This will start replication of tables that were added to the subscribed-to publications since the last invocation of REFRESH PUBLICATION or since CREATE SUBSCRIPTION. The existing data in the publications that are being subscribed to should be copied once the replication starts.
subsparams
dictionary
Dictionary of optional parameters for a subscription, e.g. copy_data, enabled, create_slot, etc.
For update the subscription allowed keys are enabled, slot_name, synchronous_commit, publication_name.
See available parameters to create a new subscription on https://www.postgresql.org/docs/current/sql-createsubscription.html.
Ignored when state is not present.
trust_input
boolean
added in 0.2.0 of community.postgresql
    Choices:
  • no
  • yes ←
If no, check whether values of parameters name, publications, owner, session_role, connparams, subsparams are potentially dangerous.
It makes sense to use yes only when SQL injections via the parameters are possible.

Notes

Note

  • PostgreSQL version must be 10 or greater.

  • Supports check_mode.

  • 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.postgresql.postgresql_publication

The official documentation on the community.postgresql.postgresql_publication module.

community.postgresql.postgresql_info

The official documentation on the community.postgresql.postgresql_info module.

CREATE SUBSCRIPTION reference

Complete reference of the CREATE SUBSCRIPTION command documentation.

ALTER SUBSCRIPTION reference

Complete reference of the ALTER SUBSCRIPTION command documentation.

DROP SUBSCRIPTION reference

Complete reference of the DROP SUBSCRIPTION command documentation.

Examples

- name: >
    Create acme subscription in mydb database using acme_publication and
    the following connection parameters to connect to the publisher.
    Set the subscription owner as alice.
  community.postgresql.postgresql_subscription:
    db: mydb
    name: acme
    state: present
    publications: acme_publication
    owner: alice
    connparams:
      host: 127.0.0.1
      port: 5432
      user: repl
      password: replpass
      dbname: mydb

- name: Assuming that acme subscription exists, try to change conn parameters
  community.postgresql.postgresql_subscription:
    db: mydb
    name: acme
    connparams:
      host: 127.0.0.1
      port: 5432
      user: repl
      password: replpass
      connect_timeout: 100

- name: Refresh acme publication
  community.postgresql.postgresql_subscription:
    db: mydb
    name: acme
    state: refresh

- name: Drop acme subscription from mydb with dependencies (cascade=yes)
  community.postgresql.postgresql_subscription:
    db: mydb
    name: acme
    state: absent
    cascade: yes

- name: Assuming that acme subscription exists and enabled, disable the subscription
  community.postgresql.postgresql_subscription:
    db: mydb
    name: acme
    state: present
    subsparams:
      enabled: no

Return Values

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

Key Returned Description
exists
boolean
always
Flag indicates the subscription exists or not at the end of runtime.

Sample:
True
final_state
dictionary
always
Subscription configuration at the end of runtime.

Sample:
{'conninfo': {}, 'enabled': True, 'owner': 'postgres', 'slotname': 'test', 'synccommit': True}
initial_state
dictionary
always
Subscription configuration at the beginning of runtime.

Sample:
{'conninfo': {}, 'enabled': True, 'owner': 'postgres', 'slotname': 'test', 'synccommit': True}
name
string
always
Name of the subscription.

Sample:
acme
queries
string
always
List of executed queries.

Sample:
['DROP SUBSCRIPTION "mysubscription"']


Authors