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postgresql_db – Add or remove PostgreSQL databases from a remote host

Synopsis

  • Add or remove PostgreSQL databases from a remote host.

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
conn_limit
string
added in 2.8
Specifies the database connection limit.
encoding
string
Encoding of the database
lc_collate
string
Collation order (LC_COLLATE) to use in the database. Must match collation order of template database unless template0 is used as template.
lc_ctype
string
Character classification (LC_CTYPE) to use in the database (e.g. lower, upper, ...) Must match LC_CTYPE of template database unless template0 is used as template.
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.
maintenance_db
string
added in 2.5
Default:
"postgres"
The value specifies the initial database (which is also called as maintenance DB) that Ansible connects to.
name
string / required
Name of the database to add or remove

aliases: db
owner
string
Name of the role to set as owner of the database
port
integer
Default:
5432
Database port to connect (if needed)

aliases: login_port
session_role
string
added in 2.8
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
  • dump
  • present ←
  • restore
The database state.
present implies that the database should be created if necessary.
absent implies that the database should be removed if present.
dump requires a target definition to which the database will be backed up. (Added in Ansible 2.4) Note that in some PostgreSQL versions of pg_dump, which is an embedded PostgreSQL utility and is used by the module, returns rc 0 even when errors occurred (e.g. the connection is forbidden by pg_hba.conf, etc.), so the module returns changed=True but the dump has not actually been done. Please, be sure that your version of pg_dump returns rc 1 in this case.
restore also requires a target definition from which the database will be restored. (Added in Ansible 2.4)
The format of the backup will be detected based on the target name.
Supported compression formats for dump and restore include .bz2, .gz and .xz
Supported formats for dump and restore include .sql and .tar
tablespace
path
added in 2.9
If you want to move the database back to the default tablespace, explicitly set this to pg_default.
target
path
added in 2.4
File to back up or restore from.
Used when state is dump or restore.
target_opts
string
added in 2.4
Further arguments for pg_dump or pg_restore.
Used when state is dump or restore.
template
string
Template used to create the database

Notes

Note

  • State dump and restore don’t require psycopg2 since version 2.8.
  • 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.

Examples

- name: Create a new database with name "acme"
  postgresql_db:
    name: acme

# Note: If a template different from "template0" is specified, encoding and locale settings must match those of the template.
- name: Create a new database with name "acme" and specific encoding and locale # settings.
  postgresql_db:
    name: acme
    encoding: UTF-8
    lc_collate: de_DE.UTF-8
    lc_ctype: de_DE.UTF-8
    template: template0

# Note: Default limit for the number of concurrent connections to a specific database is "-1", which means "unlimited"
- name: Create a new database with name "acme" which has a limit of 100 concurrent connections
  postgresql_db:
    name: acme
    conn_limit: "100"

- name: Dump an existing database to a file
  postgresql_db:
    name: acme
    state: dump
    target: /tmp/acme.sql

- name: Dump an existing database to a file (with compression)
  postgresql_db:
    name: acme
    state: dump
    target: /tmp/acme.sql.gz

- name: Dump a single schema for an existing database
  postgresql_db:
    name: acme
    state: dump
    target: /tmp/acme.sql
    target_opts: "-n public"

# Note: In the example below, if database foo exists and has another tablespace
# the tablespace will be changed to foo. Access to the database will be locked
# until the copying of database files is finished.
- name: Create a new database called foo in tablespace bar
  postgresql_db:
    name: foo
    tablespace: bar

Status

  • This module is guaranteed to have no backward incompatible interface changes going forward. [stableinterface]
  • This module is maintained by the Ansible Community. [community]

Authors

  • Ansible Core Team

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