Tag Archives: linux

parse expect_output in a variable : TCL Data Structure

Sometimes we have to automate our steps through expect, run some commands in remote machine and capture the output of a command in a variable and use that variable in some other task. So here is an example, how we … Continue reading

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Docker Issue : devmapper: Thin Pool is less than minimum required, use dm.min_free_space option to change behavior

Sometime while we build docker images or do any docker operation we might encounter thinpool space issue. like this: devmapper: Thin Pool has 132480 free data blocks which is less than minimum required 163840 free data blocks. Create more free … Continue reading

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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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Accessing Host from Docker Container

Sometime we need to access the services that are running in the host machine to be accessible from the docker container.  e.g. In on of my project, we needed to connect to the oracle db (port 1521) from inside the … Continue reading

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SNMP Poller tool to monitor any thing on network

Few years ago, I had created one SNMP Poller tool using perl and snmp utilites that can poll OID informations from any network devices, which is kind of passive monitoring mechanism. Thought to make it Opensource under GNU GPL. The … Continue reading

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My MongoDB cheatsheet

Few years ago, I was working on one mongoDB project.Its a NoSQL database , easy to learn and its pure JSON based. I learned it myself and had created a cheatsheet for it, so I can easily recall it anytime … Continue reading

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Linux performance Monitoring Tools

There are a lot of tools used for monitoring the performance in Linux. Here is the list of tools in one image that covers what is monitored by what.  

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