community.postgresql.postgresql_info module – Gather information about PostgreSQL servers

Note

This module is part of the community.postgresql collection (version 3.14.2).

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.postgresql. You need further requirements to be able to use this module, see Requirements for details.

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

Synopsis

  • Gathers information about PostgreSQL servers.

Requirements

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

  • psycopg2 >= 2.5.1

Parameters

Parameter

Comments

ca_cert

aliases: ssl_rootcert

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.

connect_params

dictionary

added in community.postgresql 2.3.0

Any additional parameters to be passed to libpg.

These parameters take precedence.

Default: {}

filter

list / elements=string

Limit the collected information by comma separated string or YAML list.

Allowable values are version, databases, in_recovery, settings, tablespaces, roles, replications, repl_slots.

By default, collects all subsets.

You can use shell-style (fnmatch) wildcard to pass groups of values (see Examples).

You can use ‘!’ before value (for example, !settings) to exclude it from the information.

If you pass including and excluding values to the filter, for example, filter=!settings,ver, the excluding values will be ignored.

login_db

aliases: db

string

Name of database to connect.

login_host

aliases: host

string

Host running the database.

If you have connection issues when using localhost, try to use 127.0.0.1 instead.

Default: ""

login_password

string

The password this module should use to establish its PostgreSQL session.

Default: ""

login_unix_socket

aliases: unix_socket

string

Path to a Unix domain socket for local connections.

Default: ""

login_user

aliases: login

string

The username this module should use to establish its PostgreSQL session.

Default: "postgres"

port

aliases: login_port

integer

Database port to connect to.

Default: 5432

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_cert

path

added in community.postgresql 2.4.0

Specifies the file name of the client SSL certificate.

ssl_key

path

added in community.postgresql 2.4.0

Specifies the location for the secret key used for the client certificate.

ssl_mode

string

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.

Choices:

  • "allow"

  • "disable"

  • "prefer" ← (default)

  • "require"

  • "verify-ca"

  • "verify-full"

trust_input

boolean

added in community.postgresql 0.2.0

If false, check whether a value of session_role is potentially dangerous.

It makes sense to use false only when SQL injections via session_role are possible.

Choices:

  • false

  • true ← (default)

Attributes

Attribute

Support

Description

check_mode

Support: full

Can run in check_mode and return changed status prediction without modifying target.

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 psycopg, a Python PostgreSQL database adapter. You must ensure that psycopg2 >= 2.5.1 or psycopg3 >= 3.1.8 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 python3-psycopg2 packages on the remote host before using this module.

See Also

See also

community.postgresql.postgresql_ping

Check remote PostgreSQL server availability.

Examples

# Display info from postgres hosts.
# ansible postgres -m postgresql_info

# Display only databases and roles info from all hosts using shell-style wildcards:
# ansible all -m postgresql_info -a 'filter=dat*,rol*'

# Display only replications and repl_slots info from standby hosts using shell-style wildcards:
# ansible standby -m postgresql_info -a 'filter=repl*'

# Display all info from databases hosts except settings:
# ansible databases -m postgresql_info -a 'filter=!settings'

- name: Collect PostgreSQL version and extensions
  become: true
  become_user: postgres
  community.postgresql.postgresql_info:
    filter: ver*,ext*

- name: Collect all info except settings and roles
  become: true
  become_user: postgres
  community.postgresql.postgresql_info:
    filter: "!settings,!roles"

# On FreeBSD with PostgreSQL 9.5 version and lower use pgsql user to become
# and pass "postgres" as a database to connect to
- name: Collect tablespaces and repl_slots info
  become: true
  become_user: pgsql
  community.postgresql.postgresql_info:
    login_db: postgres
    filter:
    - tablesp*
    - repl_sl*

- name: Collect all info except databases
  become: true
  become_user: postgres
  community.postgresql.postgresql_info:
    filter:
    - "!databases"

Return Values

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

Key

Description

databases

dictionary

Information about databases.

Returned: success

in_recovery

boolean

Indicates if the service is in recovery mode or not.

Returned: success

Sample: false

pending_restart_settings

list / elements=string

List of changed settings that will take effect upon restart .

Returned: success

repl_slots

dictionary

Replication slots (available in 9.4 and later).

Returned: if existent

replications

dictionary

Information about the current replications by process PIDs.

Returned: if pg_stat_replication view existent

roles

dictionary

Information about roles.

Returned: success

settings

dictionary

Information about run-time server parameters.

Returned: success

tablespaces

dictionary

Information about tablespaces.

Returned: success

version

dictionary

Database server version.

Returned: success

Authors

  • Andrew Klychkov (@Andersson007)