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DRDB Disk Replication with Loop Devices

This repository consist of ansible roles for creating block device level replication using DRBD.

Details

Ansible role is developed to acquire below steps

  • Create disk image file
  • Create loop device from image file
  • Create DRBD cluster and get up
  • Set first host as Primary and rest as Secondary
  • Mount DRBD device as directory

Usage

First add you hosts to hosts file under group servers. The first host in this list will be set as Primary in the cluster.
Change parameter values in vars.yml for your needs. Parameters are explained below.

  • disk_size: size of the image file which will be created. Also this value be the size of the clustered disk
  • mount_point: full path of the directory name where DRBD clustered disk will be mounted

Start ansible playbook by running command below

ansible-playbook -i hosts install.yml

After success full install, you can access to directory, path given in the parameter mount_point, in the first host.