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# postgresql_privs – Grant or revoke privileges on PostgreSQL database objects

- Synopsis

- Requirements

- Parameters

- Notes

- See Also

- Examples

- Return Values

- Status

## Synopsis

- Grant or revoke privileges on PostgreSQL database objects.

- This module is basically a wrapper around most of the functionality of PostgreSQL’s GRANT and REVOKE statements with detection of changes (GRANT/REVOKE privs ON type objs TO/FROM roles).

## 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
database string / required |  | Name of database to connect to. aliases: db, login_db
fail_on_role boolean added in 2.8 | Choices: no yes ← | If `yes`, fail when target role (for whom privs need to be granted) does not exist. Otherwise just warn and continue.
grant_option boolean | Choices: no yes | Whether `role` may grant/revoke the specified privileges/group memberships to others. Set to `no` to revoke GRANT OPTION, leave unspecified to make no changes. grant_option only has an effect if state is `present`. aliases: admin_option
host string |  | Database host address. If unspecified, connect via Unix socket. aliases: login_host
login string | Default: "postgres" | The username to authenticate with. aliases: login_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.
objs string |  | Comma separated list of database objects to set privileges on. If type is `table`, `partition table`, `sequence` or `function`, the special value`ALL_IN_SCHEMA` can be provided instead to specify all database objects of type type in the schema specified via schema. (This also works with PostgreSQL < 9.0.) (`ALL_IN_SCHEMA` is available for `function` and `partition table` from version 2.8) If type is `database`, this parameter can be omitted, in which case privileges are set for the database specified via database. If type is function, colons (":") in object names will be replaced with commas (needed to specify function signatures, see examples) aliases: obj
password string |  | The password to authenticate with. aliases: login_password
port integer | Default: 5432 | Database port to connect to. aliases: login_port
privs string |  | Comma separated list of privileges to grant/revoke. aliases: priv
roles string / required |  | Comma separated list of role (user/group) names to set permissions for. The special value `PUBLIC` can be provided instead to set permissions for the implicitly defined PUBLIC group. aliases: role
schema string |  | Schema that contains the database objects specified via objs. May only be provided if type is `table`, `sequence`, `function` or `default_privs`. Defaults to `public` in these cases.
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 present ← | If `present`, the specified privileges are granted, if `absent` they are revoked.
target_roles string added in 2.8 |  | A list of existing role (user/group) names to set as the default permissions for database objects subsequently created by them. Parameter target_roles is only available with `type=default_privs`.
type string | Choices: database default_privs foreign_data_wrapper foreign_server function group language table ← tablespace schema sequence | Type of database object to set privileges on. The `default_privs` choice is available starting at version 2.7. The 'foreign_data_wrapper' and 'foreign_server' object types are available from Ansible version '2.8'.
unix_socket string |  | Path to a Unix domain socket for local connections. aliases: login_unix_socket

## Notes

Note

- Parameters that accept comma separated lists (privs, objs, roles) have singular alias names (priv, obj, role).

- To revoke only `GRANT OPTION` for a specific object, set state to `present` and grant_option to `no` (see examples).

- Note that when revoking privileges from a role R, this role may still have access via privileges granted to any role R is a member of including `PUBLIC`.

- Note that when revoking privileges from a role R, you do so as the user specified via login. If R has been granted the same privileges by another user also, R can still access database objects via these privileges.

- When revoking privileges, `RESTRICT` is assumed (see PostgreSQL docs).

- 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

postgresql_user – Add or remove a user (role) from a PostgreSQL server instance

  The official documentation on the postgresql_user module.

postgresql_owner – Change an owner of PostgreSQL database object

  The official documentation on the postgresql_owner module.

postgresql_membership – Add or remove PostgreSQL roles from groups

  The official documentation on the postgresql_membership module.

PostgreSQL privileges

  General information about PostgreSQL privileges.

PostgreSQL GRANT command reference

  Complete reference of the PostgreSQL GRANT command documentation.

PostgreSQL REVOKE command reference

  Complete reference of the PostgreSQL REVOKE command documentation.

## Examples

    # On database "library":
    # GRANT SELECT, INSERT, UPDATE ON TABLE public.books, public.authors
    # TO librarian, reader WITH GRANT OPTION
    - name: Grant privs to librarian and reader on database library
      postgresql_privs:
        database: library
        state: present
        privs: SELECT,INSERT,UPDATE
        type: table
        objs: books,authors
        schema: public
        roles: librarian,reader
        grant_option: yes

    - name: Same as above leveraging default values
      postgresql_privs:
        db: library
        privs: SELECT,INSERT,UPDATE
        objs: books,authors
        roles: librarian,reader
        grant_option: yes

    # REVOKE GRANT OPTION FOR INSERT ON TABLE books FROM reader
    # Note that role "reader" will be *granted* INSERT privilege itself if this
    # isn't already the case (since state: present).
    - name: Revoke privs from reader
      postgresql_privs:
        db: library
        state: present
        priv: INSERT
        obj: books
        role: reader
        grant_option: no

    # "public" is the default schema. This also works for PostgreSQL 8.x.
    - name: REVOKE INSERT, UPDATE ON ALL TABLES IN SCHEMA public FROM reader
      postgresql_privs:
        db: library
        state: absent
        privs: INSERT,UPDATE
        objs: ALL_IN_SCHEMA
        role: reader

    - name: GRANT ALL PRIVILEGES ON SCHEMA public, math TO librarian
      postgresql_privs:
        db: library
        privs: ALL
        type: schema
        objs: public,math
        role: librarian

    # Note the separation of arguments with colons.
    - name: GRANT ALL PRIVILEGES ON FUNCTION math.add(int, int) TO librarian, reader
      postgresql_privs:
        db: library
        privs: ALL
        type: function
        obj: add(int:int)
        schema: math
        roles: librarian,reader

    # Note that group role memberships apply cluster-wide and therefore are not
    # restricted to database "library" here.
    - name: GRANT librarian, reader TO alice, bob WITH ADMIN OPTION
      postgresql_privs:
        db: library
        type: group
        objs: librarian,reader
        roles: alice,bob
        admin_option: yes

    # Note that here "db: postgres" specifies the database to connect to, not the
    # database to grant privileges on (which is specified via the "objs" param)
    - name: GRANT ALL PRIVILEGES ON DATABASE library TO librarian
      postgresql_privs:
        db: postgres
        privs: ALL
        type: database
        obj: library
        role: librarian

    # If objs is omitted for type "database", it defaults to the database
    # to which the connection is established
    - name: GRANT ALL PRIVILEGES ON DATABASE library TO librarian
      postgresql_privs:
        db: library
        privs: ALL
        type: database
        role: librarian

    # Available since version 2.7
    # Objs must be set, ALL_DEFAULT to TABLES/SEQUENCES/TYPES/FUNCTIONS
    # ALL_DEFAULT works only with privs=ALL
    # For specific
    - name: ALTER DEFAULT PRIVILEGES ON DATABASE library TO librarian
      postgresql_privs:
        db: library
        objs: ALL_DEFAULT
        privs: ALL
        type: default_privs
        role: librarian
        grant_option: yes

    # Available since version 2.7
    # Objs must be set, ALL_DEFAULT to TABLES/SEQUENCES/TYPES/FUNCTIONS
    # ALL_DEFAULT works only with privs=ALL
    # For specific
    - name: ALTER DEFAULT PRIVILEGES ON DATABASE library TO reader, step 1
      postgresql_privs:
        db: library
        objs: TABLES,SEQUENCES
        privs: SELECT
        type: default_privs
        role: reader

    - name: ALTER DEFAULT PRIVILEGES ON DATABASE library TO reader, step 2
      postgresql_privs:
        db: library
        objs: TYPES
        privs: USAGE
        type: default_privs
        role: reader

    # Available since version 2.8
    - name: GRANT ALL PRIVILEGES ON FOREIGN DATA WRAPPER fdw TO reader
      postgresql_privs:
        db: test
        objs: fdw
        privs: ALL
        type: foreign_data_wrapper
        role: reader

    # Available since version 2.8
    - name: GRANT ALL PRIVILEGES ON FOREIGN SERVER fdw_server TO reader
      postgresql_privs:
        db: test
        objs: fdw_server
        privs: ALL
        type: foreign_server
        role: reader

    # Available since version 2.8
    # Grant 'execute' permissions on all functions in schema 'common' to role 'caller'
    - name: GRANT EXECUTE ON ALL FUNCTIONS IN SCHEMA common TO caller
      postgresql_privs:
        type: function
        state: present
        privs: EXECUTE
        roles: caller
        objs: ALL_IN_SCHEMA
        schema: common

    # Available since version 2.8
    # ALTER DEFAULT PRIVILEGES FOR ROLE librarian IN SCHEMA library GRANT SELECT ON TABLES TO reader
    # GRANT SELECT privileges for new TABLES objects created by librarian as
    # default to the role reader.
    # For specific
    - name: ALTER privs
      postgresql_privs:
        db: library
        schema: library
        objs: TABLES
        privs: SELECT
        type: default_privs
        role: reader
        target_roles: librarian

    # Available since version 2.8
    # ALTER DEFAULT PRIVILEGES FOR ROLE librarian IN SCHEMA library REVOKE SELECT ON TABLES FROM reader
    # REVOKE SELECT privileges for new TABLES objects created by librarian as
    # default from the role reader.
    # For specific
    - name: ALTER privs
      postgresql_privs:
        db: library
        state: absent
        schema: library
        objs: TABLES
        privs: SELECT
        type: default_privs
        role: reader
        target_roles: librarian

## Return Values

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

Key | Returned | Description
--- | --- | ---
queries list added in 2.8 | always | List of executed queries. Sample: ['REVOKE GRANT OPTION FOR INSERT ON TABLE "books" FROM "reader";']

## Status

- This module is guaranteed to have backward compatible interface changes going forward. [stableinterface]

- This module is maintained by the Ansible Community. [community]

### Authors

- Bernhard Weitzhofer (@b6d)

- Tobias Birkefeld (@tcraxs)

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