This presentation overviews RHEL, Glusterfs, and the FUSE client. It was created for the Akron Linux User Group in May. There was a quick presentation followed by a demonstration using four virtual machines running RHEL 6.2. Three of the virtual machines were used as a Glusterfs storage pool using the open source RPMs. The fourth virtual machine was used to mount the storage pool using the FUSE client. I demonstrated the resilience of Glusterfs by pausing one of the Glusterfs storage pool nodes while the client was still connected. Since a distributed/replicated Glusterfs volume was used, the client paused for a short amount of time, then showed a listing of a directory with 1000 files in it. This was all done while the mount command on the client node showed the paused Glusterfs node being mounted, magical…
Author: fatherlinux
Pittsburgh Perl Workshop
Originally inspired by similar workshops in Europe, The Pittsburgh Perl Workshop was established in 2006 as a low-cost technical conference for users of the Perl Programming Language. The conference emphasizes real code and immediate, pratical solutions to common issues.
Designing a Robust Monitoring System
This presentation was created for the Pittsburgh Perl Workshop 2011. It gives an overview of a fairly sophisticated set of criteria to build a large Nagios installation.
Akron Linux User Group (ALUG) July 7th
Background Terry Morris will be presenting a talk on advanced grep usage. Schedule New Era Restaurant, 10 Massilon Rd, Akron Room Opens 6:30pm, Dinner 7-8pm, presentation 8-9pm
Akron Linux User Group (ALUG) June 2nd
Background Dave Egts will be presenting “User confinement with SELinux in Red Hat Enterprise Linux 6: Easily letting users get their job done, and that’s it” Schedule Room Opens 6:30pm, Dinner 7-8pm, presentation 8-9pm
Monitoring Data Structure Metrics
I finished reading this article on High Scalability entitled, Troubleshooting Response Time Problems – Why You Cannot Trust Your System Metrics and it reminded me of why I developed a Cacti graphing plugin for monitoring sockets, pipes and files.
Cleveland Python Users Group (CLEPY) May 9th
Background Jumpstart: how to do a start up / get involved in entrepreneurship. MeetUp Link
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Going to Red Hat
Well, it’s official, I have accepted a position at Red Hat. I am excited because Red Hat is a company that I have wanted to work with since I started using Linux 1998. For Red Hat, I will be a Solutions Architect for Enterprise Linux, also known as a technology evangelist. Now, it’s my job
Do Rockstar Sysadmins Exist
A couple of weeks ago, I heard the owner of our company talking on the phone to a client. In the conversation, he referred to me as a rockstar sysadmin. Thankfully, he wasn’t talking about my singing. I chuckled a bit, but didn’t think too much of it. I mean, it feels good to be
Designing a Robust Monitoring System
Reading Ted Dziuba’s article Monitoring Theory article, I was reminded of several conventions that I have developed over the years to help with monitoring servers, network devices, software services, batch processes, etc. First, break down your data points into levels so that you can decide how to route them. Second avoid interrupt driven technology like email, it lowers your productivity and prohibits good analysis techniques.