Ease is bigger threat to progress than hardship
This error may strike your ubuntu at any point of the moment. A few days ago when I was doing my routine work in my ubuntu laptop, suddenlyI encountered with an error “Segmentation fault ( core dumped)” then I got to know that, this error can strike you ubuntu or any other operating system at …
Continue reading “Resolving Segmentation Fault (“Core dumped”) in Ubuntu”
I am a lazy DevOps Engineer. So whenever I came across the same task more than 2 times I automate that. Although now we have many automation tools, still the first thing that hit into our mind for automation is bash or shell script.After making a lot of mistakes and messy scripts :), I am sharing …
Continue reading “Best Practices for Writing a Shell Script”
Overview First of all I would like to give credit to Docker which motivated me to write this blog, I’ve been using docker for more then 6 months but I always wondered how things are happening behind the scene. So I started in depth learning of Docker and here I am talking about Namespace which …
When ssh: connect to host ip_address port 22 Connection refused Unable to access server??? Exactly when you see the error – “ssh: connect to host ip_address port 22: Connection refused” while connecting your AWS EC2 Instance. In order to find solution of the problem, you will go to AWS forum and other channels where you need to …
Introduction : As we had a discussion about Ip addresses and their classes in the previous blog,we can now start with Sub-netting. Network Mask /Subnet Mask – As mask means to cover something, IP Address is made up of two components, One is the network address and the other is the host address.The Ip Address …
Continue reading “Classless Inter Domain Routing Made Easy (Cont..)”
Introduction : One day I was working with VPC (Virtual Private Cloud) inside AWS(Amazon Web Services), where I had a need to calculate the CIDR notation of an IP address and subnet combinations. I had to use online tools to calculate the Subnets and CIDR every time when I was working with VPC, but I …
Requirement We need private git repositories for internally use in our project so we use Gitolite for this requirement. Our client has a lot of consultants, partners and short term employees working with their code so they needed a good way of controlling access to the repos and preferably without giving each of them a …
Recently I’ve been working on automating the nodes creation on our Linode infrastructure, in the process I came across the Linode API and it’s bindings. Though they were powerful but lacks at some places i.e: In case of Linode CLI, while creating a linode you have to enter the root password so you can’t achieve …
Continue reading “A wrapper over linode python API bindings”
This blog will talk about how to mount a new volume to an existing EC2 instance, though it is very straightforward & simple, but it’s good to have a checklist ready with you so that you can do things in one go instead of searching here and there. The most important thing to take note …
Sometimes you feel constrained due to the the RAM limit of your system especially when you are running heavy duty software’s, in this blog I’ll talk about how you can overcome this problem by having an extra swap space to give you extra computing power First of all you can execute swapon command to check …
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Devops Done Right 