/kube-mysqldump-cron

Backup and restore MySQL databases using Kubernetes Cron Jobs or Docker

Primary LanguageShell

Features

  • dump and import a single or multiple databases
  • dump each database into a different file
  • exclude a database from dump
  • Kubernetes scheduled jobs examples for automatic backup, copy and import databases

Usage :

Using Docker only

Dump a database to the current directory

docker run --rm -v $PWD:/mysqldump -e DB_NAME=db_name -e DB_PASS=db_pass -e DB_USER=db_user -e DB_HOST=db_host camil/mysqldump

Dump all databases to the current directory

docker run --rm -v $PWD:/mysqldump -e DB_PASS=db_pass -e DB_USER=db_user -e DB_HOST=db_host -e ALL_DATABASES=true camil/mysqldump

Exclude one database from dump

docker run --rm -v $PWD:/mysqldump -e DB_PASS=db_pass -e DB_USER=db_user -e DB_HOST=db_host -e ALL_DATABASES=true -e IGNORE_DATABASE=some_database camil/mysqldump

Import one database from the current directory

docker run --rm -v $PWD:/mysqldump --entrypoint /import.sh -e DB_NAME=db_name -e DB_HOST=db_host -e DB_USER=db_user -e DB_PASS=db_pass camil/mysqldump

Import all the databases from the current directory

docker run --rm -v $PWD:/mysqldump --entrypoint /import.sh -e DB_NAME=db_name -e DB_HOST=db_host -e DB_USER=db_user -e DB_PASS=db_pass -e ALL_DATABASES=true camil/mysqldump

Kubernetes scheduled jobs

Notes:

  • you have to label a node with role=mysqldump on the source cluster and role=mysqlimport on the destination cluster. Or just remove the nodeSelectorrules from jobs.
  • Edit ConfigMaps and Secrets according to your environment. Values in secrets have to be base64 encoded.
  • Edit the scheduledjobs definitions to set backup location or change the linux user:

Backup one or more databases

  1. If you plan to dump just some databases, use or duplicate the "mysqldump.scheduledjob.single.yaml" example

  2. To dump all databases use "mysqldump.scheduledjob.all.yaml" example. Also has an option to exclude one database from backup.

  3. Create secret, configmap and job(s)

      kubectl create -f k8s/mysqldump/mysqldump.configmap.yaml
  kubectl create -f k8s/mysqldump/mysqldump.secret.yaml
  kubectl create -f k8s/mysqldump/mysqldump.scheduledjob.all.yaml

Automatic transfer the backups to another kubernetes cluster or external server

   kubectl create -f k8s/mysqldump/transporter.configmap.yaml
   kubectl create -f k8s/mysqldump/transporter.secret.yaml
   kubectl create -f k8s/mysqldump/transporter.scheduledjob.yaml

Automatic import the backup on different cluster

  kubectl create -f k8s/mysqlimport/mysqlimport.configmap.yaml
  kubectl create -f k8s/mysqlimport/mysqlimport.secret.yaml
  kubectl create -f k8s/mysqlimport/mysqlimport.scheduledjob.yaml