This is the second post on Prometheus and I will try to list out the Advantages of Prometheus over other monitoring tools. In the previous article, we discussed about different methodologies using in modern world and a quick introduction to…
PromQL Wildcard Examples
Why this post? If you have Prometheus cluster as your central metrics platform for your servers and the applications, you might came across situations like, have to write custom queries for fetching the data from Prometheus or for creating custom…
How to replace a failed harddrive in a software RAID 1 array?
Is it possible to replace a faulty drive from RAID 1? What are the steps? Here I’m explaining the detailed steps in replacing a bad drive from software RAID 1 array. As you know RAID 1 means mirroring. Here I’ve…
How to check the execution time of your bash script?
Do you have a long running bash script on your server’s cron list? And you really wanna get notified about the total execution time for your cron? Yeah, here we go! We can not find out the total execution time from…
What is Semaphore? Why it’s important for a Server Admin?
What is Semaphore? Well, we need a discussion on Semaphore concept under Linux as it plays major role in a Multi Processing System. Some time we need to review the current Semaphore status on the server and need to kill unwanted/unused…
MySQL tweaking – best practices and tips for SysAdmin
Why MySQL tweaking? We all need fast, reliable and secure environment for our online space. Almost all websites has its own databases to store its data. MySQL is one of the most widely using relational database service to manage user…
Introduction to CloudLinux and installation guide
Introduction to CloudLinux Now-a-days almost all hosting providers offers CloudLinux especially in a shared environment. CloudLinux was firstly introduced in 2010. It supports major web hosting control panels like cPanel, Plesk and DirectAdmin. What is CloudLinux? [Go to Direct Installation…