community.postgresql.postgresql_pg_hba – Add, remove or modify a rule in a pg_hba file¶
This plugin is part of the community.postgresql collection (version 1.2.0).
To install it use:
ansible-galaxy collection install community.postgresql.
To use it in a playbook, specify:
The fundamental function of the module is to create, or delete lines in pg_hba files.
The lines in the file should be in a typical pg_hba form and lines should be unique per key (type, databases, users, source). If they are not unique and the SID is ‘the one to change’, only one for state=present or none for state=absent of the SID’s will remain.
The default authentication assumes that on the host, you are either logging in as or sudo’ing to an account with appropriate permissions to read and modify the file.
This module also returns the pg_hba info. You can use this module to only retrieve it by only specifying dest. The info can be found in the returned data under key pg_hba, being a list, containing a dict per rule.
This module will sort resulting
pg_hbafiles if a rule change is required. This could give unexpected results with manual created hba files, if it was improperly sorted. For example a rule was created for a net first and for a ip in that net range next. In that situation, the ‘ip specific rule’ will never hit, it is in the
pg_hbafile obsolete. After the
pg_hbafile is rewritten by the community.postgresql.postgresql_pg_hba module, the ip specific rule will be sorted above the range rule. And then it will hit, which will give unexpected results.
With the ‘order’ parameter you can control which field is used to sort first, next and last.
The module supports a check mode and a diff mode.
- PostgreSQL pg_hba.conf file reference
Complete reference of the PostgreSQL pg_hba.conf file documentation.
- name: Grant users joe and simon access to databases sales and logistics from ipv6 localhost ::1/128 using peer authentication community.postgresql.postgresql_pg_hba: dest: /var/lib/postgres/data/pg_hba.conf contype: host users: joe,simon source: ::1 databases: sales,logistics method: peer create: true - name: Grant user replication from network 192.168.0.100/24 access for replication with client cert authentication community.postgresql.postgresql_pg_hba: dest: /var/lib/postgres/data/pg_hba.conf contype: host users: replication source: 192.168.0.100/24 databases: replication method: cert - name: Revoke access from local user mary on database mydb community.postgresql.postgresql_pg_hba: dest: /var/lib/postgres/data/pg_hba.conf contype: local users: mary databases: mydb state: absent
Common return values are documented here, the following are the fields unique to this module: