We have talked about runlevels in Linux in our old articles and since runlevels were kind of concepts in init systems. We are going to revisit the concept of targets in systemd which are used in most of the Linux distribution. If you not read the runlevel article you can read it on below link.
In my on-call duty for the last few years. One thing that comes, again and again, is log cleanup. This happens because of the wrong logrotate or no use of this at all. When we talk about disk cleanup, this is kind of toil to me. To understand what is toil you can look at
When we talk about DevOps and system admins, Linux is the first thing that comes to mind. But Linux itself is so vast that it’s really confusing what all you should be aware of if you are planning to go for an interview. In this article, we will try to define what are the most
We have seen about page faults in few of the previous articles. In this article we will be looking at two different kind of page faults that can happen. So lets have a look at major and minor page faults. TLDR – Minor page faults occurs when the page is present in the memory but
When you work with Linux and memory you must have heard the term swap memory. In this article, we are going to see how swap memory affects the latencies of your system, and should you keep them or not? What is a swap memory? It is a memory space that is made available separately to
The operating system has many mechanisms to operate on memory and using it in a proper way, one of them is page faults. In this article, we will look at what is a page fault and you should keep a track of it properly. What is a page fault? A page fault is an exception
I get a lot of questions regarding what should one learn to progress in a career or start a career in this domain. In this article we will talk about what you should learn for a long-term perspective in this field. Linux Yes, this is very important and is still evolving. Keeping a good grip
Network issues are the most common tasks that you have to debug if you involved in the setup of infrastructure and day-to-day operations. In this article, we will see how we can approach this problem. Let’s say we have few boxes that need to connect to a third-party API that is outside of the network,
In this article, we are going to look into this question. The intent of this question is to find out if you are aware of how you can design your network infra. They want to hear from you about private traffic, public traffic, how the traffic will go out, etc. Let’s start and have a
It’s always hectic to debug production issues and it is always wise to have a predefined step to debug any issues. But there can be scenarios where those steps may not work. In those scenarios also you should always have a flow in mind what to check. In this article, we are going to see