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Ansible Role - PostgreSQL

Maintainer License Release Status Ansible version Ansible Galaxy

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Install and configure PostgreSQL server on Debian,RedHat systems.

⚠️ Requirements

Ansible >= 2.10

🔄 Dependencies

- community.postgresql.postgresql_user
- community.postgresql.postgresql_membership
- community.postgresql.postgresql_tablespace
- community.postgresql.postgresql_db
- community.postgresql.postgresql_schema
- community.postgresql.postgresql_table
- community.postgresql.postgresql_owner
- community.postgresql.postgresql_privs
- community.postgresql.postgresql_ext
- community.postgresql.postgresql_script
- community.postgresql.postgresql_query
- community.postgresql.postgresql_slot

⚡ Installation

ansible-galaxy install claranet.postgresql

PostgreSQL version to be installed


default is 14

postgresql_version: 14

Available features and tags


This role support the following features and tags in the following order during execution:

Feature Tag
Uninstallation uninstallation
Installation install, installation
Datadir initialization init,initialize,initialise
Auto tune (with pg-config.org) autotune, auto-tune
Configuration config, configure, configuration
Replication repli, replication
Backup backup
User & membership management user, users
Tablespace management tblspc, tablespace, tablespaces
Database management db, database, databases
Ownership & privileges management owner, owners, ownership, priv, privs, privileges
Extensions management ext, extension, extensions
SQL code executions query, script

Linux/PostgreSQL versions supported

Linux/PostgreSQL 11 12 13 14 15 16
Debian 10 No No No No No No
Debian 11 No No No No No No
Debian 12 No No No No No No
Ubuntu 18.04 No No No No No No
Ubuntu 20.04 No No No No No No
Ubuntu 22.04 No No No No No No
CentOS 8 No No No No No No
CentOS Stream8 No No No No No No
Fedora 35 No No No No No No
Fedora 36 No No No No No No
Fedora 37 No No No No No No
Fedora 38 No No No No No No
Redhat 8 No No No No No No
Redhat 9 No No No No No No

Proxy usage


This role supports use of proxies.

The variables postgresql_http_general_proxy and postgresql_https_general_proxy can be used to specify a proxy for general internet access (such as downloading files).

The variables postgresql_http_pkg_proxy and postgresql_https_pkg_proxy can be used to specify a proxy for package manager interaction (such as downloading packages or updating cache).

Note: These variables are translated to environnement variables http_proxy and https_proxy which are passed to corresponding tasks.

Installation


Initialization


Auto tuning


This role supports the use of the website pgconfig.org for automatically tunning some of configuration settings of the postgresql server.

You can check the full documentation on the available configurations parameters.

Configuration example for variables (those are the default values):

postgresql_autotune: true
postgresql_autotune_base_url: https://api.pgconfig.org
postgresql_autotune_pg_version: "{{ postgresql_version }}"
# linux/windows/unix
postgresql_autotune_os_type: linux
# 386/x86-64
postgresql_autotune_arch: x86-64
# HDD/SSD/SAN
postgresql_autotune_drive_type: SSD
# WEB/OLTP/DW/Mixed/Desktop
postgresql_autotune_env_name: OLTP
postgresql_autotune_cpus: "{{ ansible_processor_nproc | d('') }}"
# Total ram in GB
postgresql_autotune_total_ram: "{{ ((ansible_memtotal_mb / 1024) | round | int) | d('') }}"

Configure


Physical Replication


Configuration example for the primary server:

postgresql_replication: true
postgresql_replication_user: replication_user
postgresql_replication_password: replication_password

postgresql_replication_role: primary
# Used to generate hba rules to allow the specified servers to connect to the primary server
postgresql_replication_replica_addresses: [192.168.1.6/32, 192.168.1.7/32]

Cnofiguration example for the replicas:

postgresql_replication: true
postgresql_replication_user: replication_user
postgresql_replication_password: replication_password

postgresql_replication_role: replica
postgresql_replication_primary_address: 192.168.1.5
postgresql_replication_primary_inventory_name: node1 # primary server name in the ansible inventory

Using slots for replication:

postgresql_replication_slot: replica1_slot
postgresql_replication_create_slot: true

When set to true the variable postgresql_replication_create_slot appends the --create-slot to the pg_basebackup command run to copy data from the primary.

Notes:

When using the slot feature for replication, make sure to indicate a different slot for each replica. You can set that value in the host_vars for each server.

Backup


Configuration example for backup.

# Allow ansible to setup postgresql backups when running
postgresql_backup: true
# Root directory containing the backups
postgresql_backup_root_dir: /var/backups/postgresql
postgresql_backup_mail_addr: admin@email.com
postgresql_backup_schedule:
    hour: 0
    minute: 0
# 3 days retentions for daily backups
postgresql_backup_brdaily: 3
# disable weekly and monthly backups
postgresql_backup_doweekly: 0
postgresql_backup_domonthly: 0
# Weekly and monthly backups are disabled so these values don't really matter
postgresql_backup_brweekly: 0
postgresql_backup_brmontly: 0

Create/Remove database users


Configuration example for managing users:

postgresql_users:
# Create two groups 'group1' and 'group2' by making use of thr role_attr_flags attribute
  - name: group1
    role_attr_flags: NOLOGIN
  - name: group2
    role_attr_flags: NOLOGIN
# Create 'user1' and 'user2' with default parameters
  - name: user1
  - name: user2
# Create user 'jdoe' with more personalized parameters
  - name: jdoe
    password: password
    comment: this is a test user
    expires: "Jun 21 2029"

postgresql_memberships:
# Ensure the role 'user1' belongs to group 'group1'
  - groups:
    - group1
    target_roles:
    - user1
    state: present
# Ensure the role 'user2' does not belong to the group 'group2'
  - groups:
    - group2
    target_roles:
    - user2
    state: absent
# Ensure the role 'jdoe' does not belong to any group
  - groups: []
    target_roles:
    - jdoe
    state: exact

Notes: Check the links for a documentation on all the available options for defining items within the variables:

Tablespaces


COnfiguration example for managing tablespaces:

postgresql_tablespaces:
# Create tablespace 'ssd'
  - name: ssd
    set:
      random_page_cost: 1
      seq_page_cost: 1
    owner: jdoe
    location: /tmp/ssd
    location_create: true # default is false
    state: present # default is present
    location_owner: postgres # default is postgres
    location_group: postgres # default is postgres
    location_mode: '0700' # default is '0700'
# Delete tablespaces 'temp2'
  - name: temp2
    state: absent
    location: /tmp/temp2_tblspc
    set:
      random_page_cost: 1
    owner: user1

Notes: When combining location_create: true with state: present the role will create the location of the tablespace with the specified permissions before creating the tablespace itself.

If you ensure the existence of that location by others means, feel free to not set the variables location_*.

Create/Remove databases


Configuration example for managing databases:

postgresql_databases:
  - name: db1
    owner: user1
    encoding: UTF-8
    lc_collate: en_US.UTF-8
    lc_ctype: en_US.UTF-8
    conn_limit: 100
    template: template0
  - name: db2
    owner: user2
  - name: db3
    state: absent

postgresql_schemas:
  - name: acme
    db: db1
  - name: acme
    db: db2
  - name: not_existing_shema
    db: db1
    owner: user1
    state: absent
    cascade_drop: true

postgresql_tables:
  - name: table1
    db: db1
    owner: user1
    columns:
      - id SERIAL PRIMARY KEY
      - name VARCHAR(50)
      - age INT
      - email VARCHAR(100)
    tablespace: ssd
    storage_params:
      - fillfactor=10
      - autovacuum_analyze_threshold=1
  - name: acme.table2
    db: db1
    columns: waste_id int
    unlogged: true

Notes: Check the links for a documentation on all the available options for defining items within the variables:

Manage ownership and privileges


postgresql_privs:
  - roles: group1 # group1 and user1 are granted all privs on all object wihtin the public schema of the example db
    db: db1
    privs: ALL
    objs: table1
    type: table
    # schema: public
    grant_option: true
  - roles: user2 # grant nreslou user all privs on nreslou database by first connecting to the postgres maintenance db
    db: postgres
    type: database
    privs: ALL
    objs: db1,db2
    grant_option: true


postgresql_ownerships:
  - db: db1
    new_owner: user1
    obj_name: table1
    obj_type: table
  - db: db2 # reassign all dbs owned by user1 to user2 and all objects in db2 to user2
    new_owner: user2
    reassign_owned_by: user1

Notes: Check the links for a documentation on all the available options for defining items within the variables:

Extensions management


Configuration example for extensions management:

postgresql_extensions:
  - name: pg_stat_statements
    db: db1
    cascade: true
    version: latest
    schema: public
  - name: non_existing_extension
    db: db1
    state: absent

Notes: For the extensions with state: present, version: latest, the role will always report changed: false as the underlying module does not differentiate when the extension is actually updated or not.

SQL executions


Configuration example for running sql:

postgresql_queries:
  - query: SELECT version()
    db: db1
  - query:
      - select * from public.table1
    db: db1
postgresql_scripts:
  - path: /tmp/insert_in_table1.sql
    db: db1

Notes: Check the links for a documentation on all the available options for defining items within the variables:

Advanced customized installation


✏️ Full Example Playbook

---

⚙️ Role variables

Variable name Default value Notes
postgresql_version "14"
postgresql_debug false Controls wether or not to show debug infos. Activating this will potentially make ansible output some postgresql credentials

PostgreSQL configuration variables

The following variables are defined and correspond to their respective postgresql configuration variable used in postgresql.conf file without the prefix postgresql_ .

Variable name Default value Notes
postgresql_port "5432"

Checkout the Contributing if you are looking for a guide on how to setup an environnement so you can test this role as a developper.

©️ License

Mozilla Public License Version 2.0

Author information

Proudly made by the Claranet team and inspired by:

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