Random tech issues we face
Requirement: Update log4j2.properties on all elastic search servers, restart them and check if logs are being rolled and purged over or not. Use Case 1: Take backup of existing log4j2.properties if existsUpdate log4j2.properties of all the elastic search data and master nodesRestart elastic search server playbook : log4j-update.yml Use Case 2: Check whether elastic search service …
Sometimes, we have seen in logs same exception occurs continuously and you get full stacktrace of that exception. But after some time, you just get only exception message not full stack trace. The reason for this is below from java doc. The compiler in the server VM now provides correct stack backtraces for all …
We create threads in application to improve performance. So, how many maximum threads can we create?? You might wondering we can create threads as much as memory is available in system. So If you try running below program, what is the output you are going to get?? So, only 2029 threads in my application. I …
Spent few hours to upgrade the version of `style.css` for a wordpress theme Finally got following, Assume you want to bump up the version of style.css for twentysixteen theme. Go To /wp-content/themes/twentysixteen/functions.php
Recently encountered a use case in production where three distributed docker container were doing the same task where only one was supposed to do that.For example there was a job of pushing some content of a csv file to DB. Some third party was regularly writing this csv to the directory. All the containers were …
Many times while doing an initial commit we accidentally adds `.classpath`, `.project` or other unwanted files. but later on some point of time we want to remove it. So here are some examples of removing then from git but not from local filestore Removing single file Removing a directory after removnig simply commit the changes …
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