community.postgresql.postgresql_user – Create, alter, or remove a user (role) from a PostgreSQL server instance

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_user.

Synopsis

  • Creates, alters, or removes a user (role) from a PostgreSQL server instance (“cluster” in PostgreSQL terminology) and, optionally, grants the user access to an existing database or tables.

  • A user is a role with login privilege.

  • You can also use it to grant or revoke user’s privileges in a particular database.

  • You cannot remove a user while it still has any privileges granted to it in any database.

  • Set fail_on_user to no to make the module ignore failures when trying to remove a user. In this case, the module reports if changes happened as usual and separately reports whether the user has been removed or not.

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, verifies that the server's certificate is signed by one of these authorities.

aliases: ssl_rootcert
comment
string
added in 0.2.0 of community.postgresql
Adds a comment on the user (equivalent to the COMMENT ON ROLE statement).
conn_limit
integer
Specifies the user (role) connection limit.
db
string
Name of database to connect to and where user's permissions are granted.

aliases: login_db
encrypted
boolean
    Choices:
  • no
  • yes ←
Whether the password is stored hashed in the database.
You can specify an unhashed password, and PostgreSQL ensures the stored password is hashed when encrypted=yes is set. If you specify a hashed password, the module uses it as-is, regardless of the setting of encrypted.
Note: Postgresql 10 and newer does not support unhashed passwords.
Previous to Ansible 2.6, this was no by default.
expires
string
The date at which the user's password is to expire.
If set to 'infinity', user's password never expires.
Note that this value must be a valid SQL date and time type.
fail_on_user
boolean
    Choices:
  • no
  • yes ←
If yes, fails when the user (role) cannot be removed. Otherwise just log and continue.

aliases: fail_on_role
groups
list / elements=string
The list of groups (roles) that you want to grant to the user.
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 user (role) to add or remove.

aliases: user
no_password_changes
boolean
    Choices:
  • no ←
  • yes
If yes, does not inspect the database for password changes. If the user already exists, skips all password related checks. Useful when pg_authid is not accessible (such as in AWS RDS). Otherwise, makes password changes as necessary.
password
string
Set the user's password, before 1.4 this was required.
Password can be passed unhashed or hashed (MD5-hashed).
An unhashed password is automatically hashed when saved into the database if encrypted is set, otherwise it is saved in plain text format.
When passing an MD5-hashed password, you must generate it with the format 'str["md5"] + md5[ password + username ]', resulting in a total of 35 characters. An easy way to do this is echo "md5`echo -n 'verysecretpasswordJOE' | md5sum | awk '{print $1}'`".
Note that if the provided password string is already in MD5-hashed format, then it is used as-is, regardless of encrypted option.
port
integer
Default:
5432
Database port to connect to.

aliases: login_port
priv
string
Slash-separated PostgreSQL privileges string: priv1/priv2, where you can define the user's privileges for the database ( allowed options - 'CREATE', 'CONNECT', 'TEMPORARY', 'TEMP', 'ALL'. For example CONNECT ) or for table ( allowed options - 'SELECT', 'INSERT', 'UPDATE', 'DELETE', 'TRUNCATE', 'REFERENCES', 'TRIGGER', 'ALL'. For example table:SELECT ). Mixed example of this string: CONNECT/CREATE/table1:SELECT/table2:INSERT.
role_attr_flags
string
    Choices:
  • [NO]SUPERUSER
  • [NO]CREATEROLE
  • [NO]CREATEDB
  • [NO]INHERIT
  • [NO]LOGIN
  • [NO]REPLICATION
  • [NO]BYPASSRLS
PostgreSQL user attributes string in the format: CREATEDB,CREATEROLE,SUPERUSER.
Note that '[NO]CREATEUSER' is deprecated.
To create a simple role for using it like a group, use NOLOGIN flag.
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 how an SSL session is negotiated with the server.
Default of prefer matches libpq default.
state
string
    Choices:
  • absent
  • present ←
The user (role) state.
trust_input
boolean
added in 0.2.0 of community.postgresql
    Choices:
  • no
  • yes ←
If no, checks whether values of options name, password, privs, expires, role_attr_flags, groups, comment, session_role are potentially dangerous.
It makes sense to use no only when SQL injections through the options are possible.

Notes

Note

  • The module creates a user (role) with login privilege by default. Use NOLOGIN role_attr_flags to change this behaviour.

  • If you specify PUBLIC as the user (role), then the privilege changes apply to all users (roles). You may not specify password or role_attr_flags when the PUBLIC user is specified.

  • SCRAM-SHA-256-hashed passwords (SASL Authentication) require PostgreSQL version 10 or newer. On the previous versions the whole hashed string is used as a password.

  • Working with SCRAM-SHA-256-hashed passwords, be sure you use the environment: variable PGOPTIONS: "-c password_encryption=scram-sha-256" (see the provided example).

  • On some systems (such as AWS RDS), pg_authid is not accessible, thus, the module cannot compare the current and desired password. In this case, the module assumes that the passwords are different and changes it reporting that the state has been changed. To skip all password related checks for existing users, use no_password_changes=yes.

  • 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_privs

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

community.postgresql.postgresql_membership

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

community.postgresql.postgresql_owner

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

PostgreSQL database roles

Complete reference of the PostgreSQL database roles documentation.

PostgreSQL SASL Authentication

Complete reference of the PostgreSQL SASL Authentication.

Examples

- name: Connect to acme database, create django user, and grant access to database and products table
  community.postgresql.postgresql_user:
    db: acme
    name: django
    password: ceec4eif7ya
    priv: "CONNECT/products:ALL"
    expires: "Jan 31 2020"

- name: Add a comment on django user
  community.postgresql.postgresql_user:
    db: acme
    name: django
    comment: This is a test user

# Connect to default database, create rails user, set its password (MD5-hashed),
# and grant privilege to create other databases and demote rails from super user status if user exists
- name: Create rails user, set MD5-hashed password, grant privs
  community.postgresql.postgresql_user:
    name: rails
    password: md59543f1d82624df2b31672ec0f7050460
    role_attr_flags: CREATEDB,NOSUPERUSER

- name: Connect to acme database and remove test user privileges from there
  community.postgresql.postgresql_user:
    db: acme
    name: test
    priv: "ALL/products:ALL"
    state: absent
    fail_on_user: no

- name: Connect to test database, remove test user from cluster
  community.postgresql.postgresql_user:
    db: test
    name: test
    priv: ALL
    state: absent

- name: Connect to acme database and set user's password with no expire date
  community.postgresql.postgresql_user:
    db: acme
    name: django
    password: mysupersecretword
    priv: "CONNECT/products:ALL"
    expires: infinity

# Example privileges string format
# INSERT,UPDATE/table:SELECT/anothertable:ALL

- name: Connect to test database and remove an existing user's password
  community.postgresql.postgresql_user:
    db: test
    user: test
    password: ""

- name: Create user test and grant group user_ro and user_rw to it
  community.postgresql.postgresql_user:
    name: test
    groups:
    - user_ro
    - user_rw

# Create user with a cleartext password if it does not exist or update its password.
# The password will be encrypted with SCRAM algorithm (available since PostgreSQL 10)
- name: Create appclient user with SCRAM-hashed password
  community.postgresql.postgresql_user:
    name: appclient
    password: "secret123"
  environment:
    PGOPTIONS: "-c password_encryption=scram-sha-256"

Return Values

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

Key Returned Description
queries
list / elements=string
always
List of executed queries.

Sample:
['CREATE USER "alice"', 'GRANT CONNECT ON DATABASE "acme" TO "alice"']


Authors

  • Ansible Core Team