Author Archive

Regression in pam_listfile module in RHEL5.9

Hot on the heels of the recent support ticket we opened with RedHat that has been finally resolved. For those who have RHN access below is the direct link: https://access.redhat.com/knowledge/solutions/328433 In a nutshell. After upgrading to RHEL 5.9 we lost the ability to ssh into any of our servers where pam_listfile was configured and the […]

Posted on March 26, 2013 at 8:50 pm by sergeyt · Permalink · Leave a comment
In: Linux

M102 MongoDB for DBAs

The course is over and I did quite well: Next class starts on the 29th of April so don’t miss it – education.10gen.com/courses Personally, I’m going to try “M101P: MongoDB for Developers (Python)” which starts on the 1st of April.

Posted on March 16, 2013 at 11:23 am by sergeyt · Permalink · Leave a comment
In: Life

OpenLDAP with TLS, ppolicy and master-master replication on RHEL6.3

This post has been dusting on a draft shelf for too long. No reason to keep it there any loger. Below is the list of instructions which once followed would help anyone to end up with an OpenLDAP server on RHEL 6.1 (should work perfectly well with CentOS too). There is nothing special about it […]

Posted on February 23, 2013 at 1:25 pm by sergeyt · Permalink · 36 Comments
In: Linux

Just a little bit more and I’ll become a star ;-)

Just want to keep it somewhere and think this place wold be the best one. I have one of the top 10% most viewed @LinkedIn profiles for 2012

Posted on February 14, 2013 at 10:45 pm by sergeyt · Permalink · One Comment
In: Life

OpenGrok, Ubuntu and Linux source tree

After all, thanks to our very long New Year holidays, I had a chance to install OpenGrok search and cross reference engine. The main reason is to have a tool to be able to efficiently browse Linux kernel source code. I use OpenGrok quite frequently, especially when there is a need to dive into Solaris/OpenSolaris […]

Posted on January 7, 2013 at 12:31 am by sergeyt · Permalink · 7 Comments
In: Linux

Happy New Year

It’s the right time to stop rushing ahead insanely, respire, have a seat and look back for a while. Hope you all had a fantastic year full of life-long memories and events and let the new 2013 be at least twice as good as 2012. Happy New Year to you and your families!

Posted on December 31, 2012 at 2:00 pm by sergeyt · Permalink · Leave a comment
In: Life

Marry Christmas

My hearty well-wishes to all who celebrates Christmas today. Wish all the best to all of you and your families. P.S. as I live in an a orthodox country we celebrate it in January.

Posted on December 25, 2012 at 5:03 pm by sergeyt · Permalink · Leave a comment
In: Life

Spacewalk, osad and jabberd miscommunication

Spacewalk is really a handy tool if you want to keep your Linux infrastructure up to date. Especially if you run Redhat based ditro, since essentially it’s community supported version of Redhat’s product called Satellite. But it has a nasty issue, at least in our case, when the clients stop responding to the commands from […]

Posted on December 24, 2012 at 11:05 am by sergeyt · Permalink · Leave a comment
In: Linux

One week in the USA or between San Francisco and LA.

It’s really unbelievable that sometimes even the wildest dreams come true and I had a chance to visit the USA and spent a whole week from the 10th till the 17th of November. After quite a long flight, roughly 13 hours, we landed in LA airport safe and sound, took a quick connection flight to […]

Posted on December 23, 2012 at 4:20 pm by sergeyt · Permalink · Leave a comment
In: Life

DLM lock levels in OCFS2

Yesterday I had to get a bit deeper into OCFS2 details and come across this very helpful blog post about different DLM lock levels used in OCFS2. Gave me a chance to place all the ducks in a row. 

Posted on December 13, 2012 at 10:29 am by sergeyt · Permalink · Leave a comment
In: Linux