SSH Config and Ansible Host Generator and Why I am doing it this way?

I am recently playing the role as an SRE and that is why I have to deal with a lot of servers. Not only cloud once or clusters but also bare metals as well as Virtual Machines. For more systematic environment preparation, I have Gitlab pipeline. But for basic tasks like change the config on demand or check a specific directory or search something or any other unpredictable or repeated tasks, I need Ansible for better grasp from my local machine or Bastion server. So, what do I have to do?

  • Create an entry to the .ssh/config file
  • Create an entry ansible host file as inventory

Repeated tasks? For me, yes. I needed to manage these. So, created a python script

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Getting habit to use TMUX

Recently been practicing TMUX for my day to day tasks. To be honest, I am late. I should have get used to it earlier. It is much more robust and well sorted than the other terminal multiplexers such as screen. How am I adapting?

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My Understanding about RUN, CMD and ENTRYPOINT in Dockerfile

Containerization gives us many benefits from packaging to distribution and others. Thus, Docker is widely used as a containerization tool which is designed for running specific tasks and processes, not for hosting operating systems or like other virtualization tools like VMWare, VirtualBox etc. You create a container to serve a single unit task. Once it completes the given task, it stops. The container life-cycle depends on the ongoing process inside of it. Once the process stops,

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Effective use of Redis with Python and Connection Pool

I have been working with redis and python for sometime. It is fun to play with python and redis. There are so many things can be solved by redis.

  • Session persistency
  • Caching
  • Volatile Datastore
  • Job or Message Queue
  • Search

And many more. But recently I was thinking about using it as main database. I am not yet sure what kind of problem I might face or what things to optimize when it is about scalability or reliability. I will for sure share my experience.

Here I want to talk about –

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How to create a ramdisk?

Whether you have SSD with NVME Protocol or good old HDD, It is not going to make you feel superior than your Random Access Memory or RAM.

By creating a ramdisk, you can use your unused memory as a super fast disk space and work with it. I do need to use nginx and for caching, I always go to tmpfs which is filesystem type that typically uses ram. How do I create one?

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