April 2017
Intermediate to advanced
470 pages
11h 12m
English
Content preview from Mastering OpenStack - Second Edition
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Keep calm and implement HA
So far, we have introduced most of the possibilities that can make our OpenStack environment highly available. OpenStack cloud controller nodes, database clusters, and network nodes can be deployed in redundancy in the following ways:
- MySQL high availability through Galera active/active multi-master deployment and Keepalived
- RabbitMQ active/active high availability using mirrored queues and HAProxy for load balancing
- The OpenStack API services' inclusion of the nova-scheduler and glance-registry in cloud controllers nodes in the active-passive model using Pacemaker and Corosync
- Neutron Layer 3 agents by internal routing redundancy
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.