About

Ansible role ansible-wal-g installs wal-g binary from github releases.

WAL-G is an archival restoration tool for Postgres (beta for MySQL, MongoDB, and Redis)

WAL-G is the successor of WAL-E with a number of key differences. WAL-G uses LZ4, LZMA, or Brotli compression,
multiple processors, and non-exclusive base backups for Postgres.\

Requirements

• cron | systemd-cron

Role variables

Defaults

# wal-g version to fetch
walg_version: 3.0

# wal-g releases repository url
walg_url: "https://github.com/wal-g/wal-g/releases/download/v{{ walg_version }}/wal-g-pg-ubuntu-20.04-amd64.tar.gz"

# wal-g binary place
walg_binary: /usr/local/bin/wal-g

# user for cronjob
walg_user: postgres

# wal-g setting place
walg_env: /etc/default/wal-g

# wal-g scripts place
walg_script_path: /usr/local/scripts

# S3 bucket required settings
walg_s3_id: "access"
walg_s3_secret: "secret"
walg_s3_bucket: backup
walg_s3_prefix: db

# S3 bucket optional settings
walg_s3_storage_class: STANDARD | STANDARD_IA | REDUCED_REDUNDANCY
walg_s3_use_path_style: false | true
walg_s3_region: us-west-1
walg_s3_endpoint: "https://s3.dualstack.{{ walg_s3_region }}.amazonaws.com"

# Disk usage
walg_backup_upload_disk: 2

# Network usage
walg_backup_upload: 10
walg_backup_download: 10

# How many delta backups should stay between full backups
walg_backup_delta_steps: 7

# How many full backups should stay after rotation
walg_backups_retain: 2

# Create cron jobs
walg_cron_enabled: true

Override

All variables from this groups will be combined with same _config groups in vars/main.yml.

# Override WAL-G settings
## Storages
walg_aws_override: []
walg_azure_override: []
walg_gcs_override: []
walg_swift_override: []
walg_filesystem_override: []

## Databases
walg_mongodb_override: []
walg_mongodb_binary: false
walg_mysql_override: []
walg_mysql_incremental: false
walg_postgresql_override: []

## Commons
walg_common_override: []

Dependencies

Example playbook

- hosts: servers
  roles:
    - role: ansible-wal-g
      walg_version: 0.2.15

PostgreSQL settings

• archive_command = '/usr/local/scripts/walg-push.sh %p &> /dev/null'
• restore_command = '/usr/local/scripts/walg-fetch.sh "%f" "%p"'

Usage

Create full or delta backups with: /usr/local/scripts/walg-backup.sh
Rotate WAL-archives and backups with: /usr/local/scripts/walg-rotate.sh

License

MIT