A detail-minded individual, combining strong technical understanding and communication skills with experiences in Systems administration; a proven methodical problem solver.


How to compare your route table isn’t missing any routes from your ansible config

REDHAT/CENTOS Okay so those of you who use ansible like me and deal with complicated networks where they have a route list that’s a mile long on servers that you might need to migrate or copy to ansible and you want to save yourself some time and be accurate by ensuring the routes are correct and the file isn’t missingRead the Rest…


How to change the currently active slave of a bonded interface

RedHat / CentOS : Interface Bonding as we all know is very useful in providing the fault tolerance and increased bandwidth. We can change the active slave interface of bonding without interrupting the production work. In the example below we have the interface bonding bond0 with 2 slaves em0 and em1 (em1 being the active slave). We will be replacingRead the Rest…


How to fix in the infiniband issue when migrating multiple bonded nics to redhat 7

Okay so some of you might be using the mellanox FPGA cards which basically bypass the PCIBUS to give lower latency on your network response time. Now if you have used an OS like SUSE and had a butt load of bonded nics and then want to migrate the OS and all the bonded nics configurations in an automated fashionRead the Rest…


How to build a server using kickstart satellite 6.x

Note: This post is assuming that your capsule server are already configured and your dhcpd service is running and your subnets have been added to satellite and your capsule dhcpd config Automated process via ansible coming soon…. Manual process: HOST TAB On the top menu bar click on the HOSTS Create hosts Under Create hosts there are a bunch ofRead the Rest…


SMTP auth relay with postfix

In case that your SMTP server has authentication (like Gmail), For this purpose we will use Postfix. I Install the needed packages: Ubuntu apt-get install postfix mailutils libsasl2-2 ca-certificates libsasl2-modules CentOS yum update && yum install postfix mailx cyrus-sasl cyrus-sasl-plain Set Postfix config file /etc/postfix/main.cf. Add this lines to the end of the file: Set Postfix config file /etc/postfix/main.cf. Add this lines toRead the Rest…


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