Category Archives: Linux

How to dowgrade linux(ubuntu) kernel to previous version

Recently we are bitten by the OOM bug in the ubuntu kernel version 4.4.0-59-generic. The fix will be released in updates channel tentatively on Feb 20 2017. We can’t wait till that time. So  We decided to roll back to the … Continue reading

Posted in kernel, Linux, system administration | Leave a comment

Setting up Redis High Availability (HA) cluster using Sentinel

We were running redis server in one of our machine which serves one of our mirco service. The redis service was running happily for 3 months. One day suddenly redis server stopped responding because machine ran out of disk space. … Continue reading

Posted in Application Development, Cloud Computing, Database, elasticache, Linux, NoSQL, redis, sentinel | Leave a comment

How to install weighttp in Ubuntu?

weighttp a lightweight and simple webserver benchmarking tool. To install weighttp in ubuntu we need to install libev (It is libev not libdev) using the following command sudo apt-get install libev4 libev-dev or we can install libev for any linux … Continue reading

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