Category Archives: Operations

pexpect alternative in python for remote connection

We generally use python pexpect module to connect system remotely with ssh and execute our tasks. But sometimes pexpect module is not found to be installed in remote systems which create problems. And this problem can be solved with the … Continue reading

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Nagios Plugin Developed@NagiosExchange

Long ago, while working in one of the previous organization, there were lots of components like services and servers running in production environment. I had deployed all products one by one from scratch and the count kept on increasing. There … Continue reading

Posted in ARTICLES, Container, DevOps, FOSS, Monitoring, Operations, Programming, Virtualization | Tagged , , , , | Leave a comment

Chef Recipe: Oracle DB 11gR2 EE silent deploy

Chef provides a lot of flexibility and greater choice for infrastructure automation and I prefer it over others. We should design our recipe in such a way that the our recipes without being modified can be used in any environment … Continue reading

Posted in ARTICLES, DevOps, HOWTO, Operations, Private Cloud, Programming, Public Cloud, TUTORIALS | Tagged , , , | Leave a comment

xend Error: Acquire running lock failed: 256

Recently I encountered this issue in OVMM 3.2.9  while starting a vm with xm create <vm.cfg path> The reason behind this found was : the vm was not shutdown properly  and the lock file is still there even if VM … Continue reading

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Docker Private Registry Setup

We can create our own secure private  docker repository where we can store our images and can be accessed from remote machine. 1. Goto /var/lib/docker in server and Create certificate using the domain name: cd /var/lib/docker && mkdir certs mkdir … Continue reading

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Using Docker – Part 1

In this part we will go through some simple usage of docker command. Use -D with docker for debug mode. Docker images are Immutable and Containers are Ephemeral. How to get help ?? docker help docker <command> help 1. Check … Continue reading

Posted in ARTICLES, Container, DevOps, HOWTO, Operations, TIPS & T RICS, TUTORIALS, Uncategorized | Tagged , , , , , , | Leave a comment