Failed to determine cgroup for the ‘cpu’ subsystem: Failed to read /proc/1232/cgroup: Failed to open file: No such file or directory. Container b8d8339ac8e6cbfb17111456dcd919b51231232131231233931cee8cfc3f87 failed to exit within 40 seconds of signal 15 – using the force Recently I came across this error which lead to a lot of debugging and at the end I found
You may have heard the name of proxy servers and what they do. In this part of article we will be talking about the difference between reverse proxy server and forward proxy server. Why are they used and how you can setup a proxy server. Lets see Reverse proxy vs forward proxy. Forward Proxy Server: Forward
If you are working with websites and networking, you must have heard of the name of ‘NAMESERVERS’. We will try to figure out what exactly are these and how to install one and use it. Lets see what is a nameserver and how to run one What is a nameserver? These are the servers running
When you come in the world of infra/machine provisioning one of the big things that you hear talk about is Chef. In this article we will see what exactly is chef and how it works to make you provision your machines faster. Lets see what are chef server and how to work with chef?
We learn about web sockets and how they solve the problems caused by pooling. You can read it here if you missed it. In this article we are going to talk about the implementation of web sockets. Web Sockets and how they solve the problem caused by pooling. For the article I am assuming that
You must be aware of web services where you provide a url and when some hit those url they get some data. Now say there is a change in that data and you want to be aware of that change then what will you do. We can use polling that is keep calling the url
You must have heard of travis or jenkins if not you can read about them if you click on their name. Now you want continuous integration or lets leave this word. Lets say you want to run some command whenever you are committing something on github. Say you want to run test case, code quality
Recently I came to know about the runlevels in linux while going through initd. So I thought of writing about it and here it is what are runlevels in linux systems? So there are 7 runlevels defined and these are numbered from 0-6.Following is the list of the runlevels. What are runlevels in linux systems?
When you are debugging the servers it is sometimes very important to get the count of thread each process is running, Here we will see different ways by which we can see the number of threads. Keep in mind that these commands are for ubuntu and may vary for different systems. Let us start and
When we talk about micro services, cloud infrastructure and ability of the infrastructure which is resilient, Netflix is one of the top companies which comes into scene. Netflix always work in the direction of making its infrastructure more resilient to make it always available cause it has to serve a lot of traffic. In this