community.general.postgresql_pg_hba (1.3.14) — module

Add, remove or modify a rule in a pg_hba file

Authors: Sebastiaan Mannem (@sebasmannem)

Install collection

Install with ansible-galaxy collection install community.general:==1.3.14


Add to requirements.yml

  collections:
    - name: community.general
      version: 1.3.14

Description

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 C(state=present) or none for C(state=absent) of the SID's will remain.


Requirements

Usage examples

  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Grant users joe and simon access to databases sales and logistics from ipv6 localhost ::1/128 using peer authentication.
  community.general.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
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Grant user replication from network 192.168.0.100/24 access for replication with client cert authentication.
  community.general.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
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Revoke access from local user mary on database mydb.
  community.general.postgresql_pg_hba:
    dest: /var/lib/postgres/data/pg_hba.conf
    contype: local
    users: mary
    databases: mydb
    state: absent

Inputs

    
dest:
    description:
    - Path to C(pg_hba) file to modify.
    required: true
    type: path

mode:
    description:
    - The permissions the resulting filesystem object should have.
    - For those used to I(/usr/bin/chmod) remember that modes are actually octal numbers.
      You must give Ansible enough information to parse them correctly. For consistent
      results, quote octal numbers (for example, V('644') or V('1777')) so Ansible receives
      a string and can do its own conversion from string into number. Adding a leading
      zero (for example, V(0755)) works sometimes, but can fail in loops and some other
      circumstances.
    - Giving Ansible a number without following either of these rules will end up with
      a decimal number which will have unexpected results.
    - As of Ansible 1.8, the mode may be specified as a symbolic mode (for example, V(u+rwx)
      or V(u=rw,g=r,o=r)).
    - If O(mode) is not specified and the destination filesystem object B(does not) exist,
      the default C(umask) on the system will be used when setting the mode for the newly
      created filesystem object.
    - If O(mode) is not specified and the destination filesystem object B(does) exist,
      the mode of the existing filesystem object will be used.
    - Specifying O(mode) is the best way to ensure filesystem objects are created with
      the correct permissions. See CVE-2020-1736 for further details.
    type: raw

group:
    description:
    - Name of the group that should own the filesystem object, as would be fed to I(chown).
    - When left unspecified, it uses the current group of the current user unless you
      are root, in which case it can preserve the previous ownership.
    type: str

order:
    choices:
    - sdu
    - sud
    - dsu
    - dus
    - usd
    - uds
    default: sdu
    description:
    - The entries will be written out in a specific order. With this option you can control
      by which field they are ordered first, second and last. s=source, d=databases, u=users.
      This option is deprecated since 2.9 and will be removed in community.general 3.0.0.
      Sortorder is now hardcoded to sdu.
    type: str

owner:
    description:
    - Name of the user that should own the filesystem object, as would be fed to I(chown).
    - When left unspecified, it uses the current user unless you are root, in which case
      it can preserve the previous ownership.
    - Specifying a numeric username will be assumed to be a user ID and not a username.
      Avoid numeric usernames to avoid this confusion.
    type: str

state:
    choices:
    - absent
    - present
    default: present
    description:
    - The lines will be added/modified when C(state=present) and removed when C(state=absent).
    type: str

users:
    default: all
    description:
    - Users this line applies to.
    type: str

backup:
    default: false
    description:
    - If set, create a backup of the C(pg_hba) file before it is modified. The location
      of the backup is returned in the (backup) variable by this module.
    type: bool

create:
    default: false
    description:
    - Create an C(pg_hba) file if none exists.
    - When set to false, an error is raised when the C(pg_hba) file doesn't exist.
    type: bool

method:
    choices:
    - cert
    - gss
    - ident
    - krb5
    - ldap
    - md5
    - pam
    - password
    - peer
    - radius
    - reject
    - scram-sha-256
    - sspi
    - trust
    default: md5
    description:
    - Authentication method to be used.
    type: str

serole:
    description:
    - The role part of the SELinux filesystem object context.
    - When set to V(_default), it will use the C(role) portion of the policy if available.
    type: str

setype:
    description:
    - The type part of the SELinux filesystem object context.
    - When set to V(_default), it will use the C(type) portion of the policy if available.
    type: str

seuser:
    description:
    - The user part of the SELinux filesystem object context.
    - By default it uses the V(system) policy, where applicable.
    - When set to V(_default), it will use the C(user) portion of the policy if available.
    type: str

address:
    aliases:
    - source
    - src
    default: samehost
    description:
    - The source address/net where the connections could come from.
    - Will not be used for entries of I(type)=C(local).
    - You can also use keywords C(all), C(samehost), and C(samenet).
    type: str

contype:
    choices:
    - local
    - host
    - hostnossl
    - hostssl
    description:
    - Type of the rule. If not set, C(postgresql_pg_hba) will only return contents.
    type: str

netmask:
    description:
    - The netmask of the source address.
    type: str

options:
    description:
    - Additional options for the authentication I(method).
    type: str

selevel:
    description:
    - The level part of the SELinux filesystem object context.
    - This is the MLS/MCS attribute, sometimes known as the C(range).
    - When set to V(_default), it will use the C(level) portion of the policy if available.
    type: str

databases:
    default: all
    description:
    - Databases this line applies to.
    type: str

attributes:
    aliases:
    - attr
    description:
    - The attributes the resulting filesystem object should have.
    - To get supported flags look at the man page for I(chattr) on the target system.
    - This string should contain the attributes in the same order as the one displayed
      by I(lsattr).
    - The C(=) operator is assumed as default, otherwise C(+) or C(-) operators need to
      be included in the string.
    type: str
    version_added: '2.3'
    version_added_collection: ansible.builtin

backup_file:
    description:
    - Write backup to a specific backupfile rather than a temp file.
    type: str

unsafe_writes:
    default: false
    description:
    - Influence when to use atomic operation to prevent data corruption or inconsistent
      reads from the target filesystem object.
    - By default this module uses atomic operations to prevent data corruption or inconsistent
      reads from the target filesystem objects, but sometimes systems are configured or
      just broken in ways that prevent this. One example is docker mounted filesystem
      objects, which cannot be updated atomically from inside the container and can only
      be written in an unsafe manner.
    - This option allows Ansible to fall back to unsafe methods of updating filesystem
      objects when atomic operations fail (however, it doesn't force Ansible to perform
      unsafe writes).
    - IMPORTANT! Unsafe writes are subject to race conditions and can lead to data corruption.
    type: bool
    version_added: '2.2'
    version_added_collection: ansible.builtin

Outputs

backup_file:
  description: File that the original pg_hba file was backed up to
  returned: changed
  sample: /tmp/pg_hba_jxobj_p
  type: str
msgs:
  description: List of textual messages what was done
  returned: always
  sample:
    msgs:
    - Removing
    - Changed
    - Writing
  type: list
pg_hba:
  description: List of the pg_hba rules as they are configured in the specified hba
    file
  returned: always
  sample:
    pg_hba:
    - db: all
      method: md5
      src: samehost
      type: host
      usr: all
  type: list

See also