Assumption: You have two clusters, access to both, and a pool that exists in both clustsers and you wish to replicate some or all images in that pool to the other cluster.
Mirroring in both directions is required for Cinder to properly implement failover and failback.
Make sure you have the rbd-mirror package installed.
| # Idempotent way to build a /etc/hosts file with Ansible using your Ansible hosts inventory for a source. | |
| # Will include all hosts the playbook is run on. | |
| # Inspired from http://xmeblog.blogspot.com/2013/06/ansible-dynamicaly-update-etchosts.html | |
| - name: "Build hosts file" | |
| lineinfile: dest=/etc/hosts regexp='.*{{ item }}$' line="{{ hostvars[item].ansible_default_ipv4.address }} {{item}}" state=present | |
| when: hostvars[item].ansible_default_ipv4.address is defined | |
| with_items: groups['all'] |
| import sys | |
| import os | |
| import subprocess | |
| def git(args, **kwargs): | |
| environ = os.environ.copy() | |
| if 'repo' in kwargs: | |
| environ['GIT_DIR'] = kwargs['repo'] | |
| if 'work' in kwargs: | |
| environ['GIT_WORK_TREE'] = kwargs['work'] |
