v0.6

• Add delete old backup
  By adding --prune and --keep-last to specify the day interval, 7 is the default value when prune is enabled

v0.5

• Code refactoring
• Added more details to the documentation

v0.4

What's new

• Replace the --operation flag by backup and restore command
• Code refactoring

Example:

Backup

pg-bkup backup --dbname database --storage s3 --path /custom-path 

Restore

pg-bkup restore --dbname database --file db_20231219_022941.sql.gz

v0.3

What's new

• Database backup compression was the default option, add a new flag to disable backup compression --disable-compression

v0.2

Scheduled backup with docker

To run in scheduled mode you need to add --mode scheduled end specify the period by adding --period "*/30 * * * *"
For Kubernetes, you don't need to run it in scheduled mode.
Run it as CronJob without flag mode or with the flag by adding --mode default

Run in Scheduled mode

This tool can be run as CronJob in Kubernetes for a regular backup which makes deployment on Kubernetes easy as Kubernetes has CronJob resources.
For Docker, you need to run it in scheduled mode by adding --mode scheduled flag and specify the periodical backup time by adding --period "0 1 * * *" flag.

Make an automated backup on Docker

Syntax of crontab (field description)

The syntax is:

• 1: Minute (0-59)
• 2: Hours (0-23)
• 3: Day (0-31)
• 4: Month (0-12 [12 == December])
• 5: Day of the week(0-7 [7 or 0 == sunday])

Easy to remember format:

* * * * * command to be executed

- - - - -
| | | | |
| | | | ----- Day of week (0 - 7) (Sunday=0 or 7)
| | | ------- Month (1 - 12)
| | --------- Day of month (1 - 31)
| ----------- Hour (0 - 23)
------------- Minute (0 - 59)

At every 30th minute

*/30 * * * *

“At minute 0.” every hour

0 * * * *

“At 01:00.” every day

0 1 * * *

Example of scheduled mode

Docker run :

docker run --rm --name pg-bkup -v $BACKUP_DIR:/backup/ -e "DB_HOST=$DB_HOST" -e "DB_USERNAME=$DB_USERNAME" -e "DB_PASSWORD=$DB_PASSWORD" jkaninda/pg-bkup  bkup --operation backup --dbname $DB_NAME --mode scheduled --period "0 1 * * *"

With Docker compose

version: "3"
services:
  pg-bkup:
    image: jkaninda/pg-bkup
    container_name: pg-bkup
    privileged: true
    devices:
    - "/dev/fuse"
    command:
      - /bin/sh
      - -c
      - bkup --operation backup --storage s3 --path /mys3_custome_path --dbname database_name --mode scheduled --period "*/30 * * * *"
    environment:
      - DB_PORT=5432
      - DB_HOST=postgres-host
      - DB_USERNAME=userName
      - DB_PASSWORD=${DB_PASSWORD}
      - ACCESS_KEY=${ACCESS_KEY}
      - SECRET_KEY=${SECRET_KEY}
      - BUCKETNAME=${BUCKETNAME}
      - S3_ENDPOINT=${S3_ENDPOINT}

v0.1

Postgres Backup

Postgres Backup tool, backup database to S3 or Object Storage

• Docker
• Kubernetes

Links:

• Docker Hub
• Github

MySQL solution :

• MySQL

Storage:

• local
• s3
• Object storage

Usage

Options	Shorts	Usage
pg_bkup	bkup	CLI utility
--operation	-o	Set operation. backup or restore (default: backup)
--storage	-s	Set storage. local or s3 (default: local)
--file	-f	Set file name for restoration
--path		Set s3 path without file name. eg: /custom_path
--dbname	-d	Set database name
--port	-p	Set database port (default: 3306)
--timeout	-t	Set timeout (default: 60s)
--help	-h	Print this help message and exit
--version	-V	Print version information and exit

Backup database :

Simple backup usage

bkup --operation backup

bkup -o backup

S3

bkup --operation backup --storage s3

Docker run:

docker run --rm --network your_network_name --name pg-bkup -v $PWD/backup:/backup/ -e "DB_HOST=database_host_name" -e "DB_USERNAME=username" -e "DB_PASSWORD=password" jkaninda/pg-bkup  bkup -o backup -d database_name

Docker compose file:

version: '3'
services:
  postgres:
    image: postgres:14.5
    container_name: postgres
    pull_policy: if_not_present
    restart: unless-stopped
    volumes:
      - ./postgres:/var/lib/postgresql/data
    environment:
      POSTGRES_DB: bkup
      POSTGRES_PASSWORD: password
      POSTGRES_USER: bkup
  pg-bkup:
    image: jkaninda/pg-bkup
    container_name: pg-bkup
    depends_on:
      - postgres
    command:
      - /bin/sh
      - -c
      - bkup --operation backup -d bkup
    volumes:
      - ./backup:/backup
    environment:
      - DB_PORT=5432
      - DB_HOST=postgres
      - DB_NAME=bkup
      - DB_USERNAME=bkup
      - DB_PASSWORD=password

Restore database :

Simple database restore operation usage

bkup --operation restore --file database_20231217_115621.sql  --dbname database_name

bkup -o restore -f database_20231217_115621.sql -d database_name

S3

bkup --operation restore --storage s3 --file database_20231217_115621.sql --dbname database_name

Docker run:

docker run --rm --network your_network_name --name pg-bkup -v $PWD/backup:/backup/ -e "DB_HOST=database_host_name" -e "DB_USERNAME=username" -e "DB_PASSWORD=password" jkaninda/pg-bkup:latest  bkup -o backup -d database_name -f napata_20231219_022941.sql.gz

Docker compose file:

version: '3'
services:
  pg-bkup:
    image: jkaninda/pg-bkup:latest
    container_name: pg-bkup
    command:
      - /bin/sh
      - -c
      - bkup --operation restore --file database_20231217_115621.sql -d database_name
    volumes:
      - ./backup:/backup
    environment:
      #- FILE_NAME=database_20231217_040238.sql.gz # Optional if file name is set from command
      - DB_PORT=5432
      - DB_HOST=postgres
      - DB_USERNAME=user_name
      - DB_PASSWORD=password

Run

docker-compose up -d

Backup to S3

docker run --rm --privileged --device /dev/fuse --name pg-bkup -e "DB_HOST=db_hostname" -e "DB_USERNAME=username" -e "DB_PASSWORD=password" -e "ACCESS_KEY=your_access_key" -e "SECRET_KEY=your_secret_key" -e "BUCKETNAME=your_bucket_name" -e "S3_ENDPOINT=https://eu2.contabostorage.com" jkaninda/pg-bkup  bkup -o backup -s s3 -d database_name

To change s3 backup path add this flag : --path /mycustomPath . default path is /pg_bkup

Simple S3 backup usage

bkup --operation backup --storage s3 --dbname mydatabase 

  mysql-bkup:
    image: jkaninda/pg-bkup:latest
    container_name: pg-bkup
    tty: true
    privileged: true
    devices:
    - "/dev/fuse"
    command:
      - /bin/sh
      - -c
      - pg_bkup --operation restore --storage s3 -f database_20231217_115621.sql.gz --dbname database_name
    environment:
      - DB_PORT=5432
      - DB_HOST=postgress
      - DB_USERNAME=user_name
      - DB_PASSWORD=password
      - ACCESS_KEY=${ACCESS_KEY}
      - SECRET_KEY=${SECRET_KEY}
      - BUCKETNAME=${BUCKETNAME}
      - S3_ENDPOINT=${S3_ENDPOINT}

Run "docker run" from crontab

Make an automated backup (every night at 1).

backup_script.sh

#!/bin/sh
DB_USERNAME='db_username'
DB_PASSWORD='password'
DB_HOST='db_hostname'
DB_PORT="5432"
DB_NAME='db_name'
BACKUP_DIR='/some/path/backup/'

docker run --rm --name pg-bkup -v $BACKUP_DIR:/backup/ -e "DB_HOST=$DB_HOST" -e "DB_PORT=$DB_PORT" -e "DB_USERNAME=$DB_USERNAME" -e "DB_PASSWORD=$DB_PASSWORD" jkaninda/pg-bkup  bkup -o backup -d $DB_NAME

chmod +x backup_script.sh

Your crontab looks like this:

0 1 * * * /path/to/backup_script.sh

Kubernetes CronJob

Simple Kubernetes CronJob usage:

apiVersion: batch/v1
kind: CronJob
metadata:
  name: bkup-job
spec:
  schedule: "0 1 * * *"
  jobTemplate:
    spec:
      template:
        spec:
          backoffLimit: 2
          containers:
          - name: pg-bkup
            image: jkaninda/pg-bkup
            securityContext:
              privileged: true
            command:
            - /bin/sh
            - -c
            - bkup --operation backup -s s3 --path /custom_path
            env:
              - name: DB_PORT
                value: "5432" 
              - name: DB_HOST
                value: ""
              - name: DB_NAME
                value: ""
              - name: DB_USERNAME
                value: ""
              # Please use secret!
              - name: DB_PASSWORD
                value: ""
              - name: ACCESS_KEY
                value: ""
              - name: SECRET_KEY
                value: ""
              - name: BUCKETNAME
                value: ""
              - name: S3_ENDPOINT
                value: "https://s3.amazonaws.com"
          restartPolicy: Never