Tag Archives: centos

OpenStack Juno Scripted Install with Neutron on CentOS 7

Note: the are newer versions of this article: OpenStack Newton – Quick Install on CentOS 7 and also Scripted Installation of OpenStack Mitaka This article provides scripts to simplify the installation of OpenStack Juno, including the Neutron networking component, onto a minimum number of servers for testing. If you’ve done a manual install by following the official… Read More »

OpenStack Juno Scripted Installation on CentOS 7

Note: the are newer versions of this article: OpenStack Newton – Quick Install on CentOS 7 and also Scripted Installation of OpenStack Mitaka This article shows how to install OpenStack Juno on CentOS 7 with a couple of scripts. If you’ve manually installed OpenStack by following the official documentation, you know that there are many steps: adding… Read More »

OpenStack High Availability: MySQL Cluster

Summary: This article shows how to cluster MySQL on CentOS 6.4 using pacemaker, corosync and drbd. Note: Since writing this article, I’ve decided that providing HA for OpenStack using pacemaker is overly complicated and prone to failure. Instead, I’ve now adopted a simpler approach using HAProxy for load balancing and MySQL replication with Galera.  Please… Read More »

OpenStack – I need how many NICs?

I’m currently working on an OpenStack deployment.  Looking at the documentation and the various deployment scenarios, each host appears to require at least two if not three or four network interface cards, depending on the OpenStack services running on that particular host.  For me, and I suspect for a lot of enterprises, this just isn’t… Read More »