linux

  • In this post I’m going to take a look at a two-node CentOS 7 Apache active/passive cluster using mostly packages in the Red Hat cluster suite.  In case you don’t already know, CentOS is created by making use of the source packages provided by Red Hat Enterprise Linux (RHEL). 

  • In my last post, I went through the steps to build an active/passive Apache web hosting cluster on CentOS 7.  Building on the same platform, I’m going to add replicated block storage to our cluster by utilizing DRBD

  • If you have been following along, in my last two posts we successfully set up an active/passive Apache cluster on CentOS 7 and then we added shared storage. The storage I chose was local storage. In this post, I'll be replacing that with iSCSI shared storage and adding MySQL (actually MariaDB).

  • In this post, I'm going to take a look at a redundant Ceph storage cluster running on CentOS 7.  Although not completely accurate, I sort of think of Ceph as a redundant iSCSI option or even a 'poor mans' SAN because it can present block-level storage to clients.  Ceph is an extremely powerful enterprise-class clustering platform designed for performance, reliability, and scalability.

  • If you run Red Hat Enterprise Linux and can't yet justify the cost of the Red Hat Satellite product, this post might be of interest to you.  Many admins in this situation will set up a local Red Hat yum repository and point all their systems at it for updates but in this scenario, how do you know what systems need what updates?