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System Administration

Mohamed Hassan (JOSEPH) edited this page Jul 28, 2023 · 81 revisions

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Base theories from universities worldwide regardless of suggested references:



Clean Laptop (Windows OS based) with minimum specs of 32 G RAM, i7 CPU and 250 G SSD



2 different specializations to eliminate the dirty business and manipulation which are done via mother fuckers thieves terrorists who steals the mental efforts of human resources and kill them later when they become old - also this way of specialization the human resource will grow steady in his/her career path, so the depth and breadth will grow up proportional with time in the proper direction besides becoming stable in his/her life and benefits his/her society


Roles:

  • Senior System Admins [Linux Based] are responsible to: JD

  • Junior System Admins [Linux Based] are responsible for: JD

  • Senior DevOps Engineers [Linux Based] are responsible for: JD

  • Junior DevOps Engineers [Linux Based] are responsible for: JD



Necessary tools in local environment:

  • Tools for Systems Admins [Linux Based]

  • Tools for DevOps Engineers [Linux Based]


Hint: Use IDE's plugins upon need to get more functionality.


System administration tools (VMware, Docker, Kubernetes, Jenkins) and their associated configurations shall be used/tested/verified LOCALLY before moving to a real traffic environment like testing environment or production environment and having a full control over them, then shut them down if they are not needed to avoid a lot of computer's resources consumption.


Do not use all things in the world to make something up and running properly mate πŸ˜‡, it's not a fucken magical show. Just do a plan with the available resources on the table, then start apply using science not a fucken magical show. Choose wisely 🧠. There is NO 1 magical solution which fits all world problems. The presentation which I just wrote depicts the evolvement of VMs into Containers but this doesn't less rate the value of VMs. Regardless of this evolvement, we still can have an added value using VMs. Always think wisely 🧠 and take enough time βŒ› to know the possible outcomes which results from your way of thinking. Which means don't be a fucken sheep πŸ‘.

It's recommended to read a bit about Bash-Shell, Yaml-File and Json-File.


As a Senior System Admin [Linux Based] you need to contact the CTO:

  • upon preparation of the testing environment, so you can have a publicly accessible URL via the Internet to the (Junior | Senior) Java Developers [Mobile-Frontend] using the support of a governmental service called ISP.

  • after finalizing the production environment, so you can move AKA replicate the verified βœ… developed system to the end users using the support of a governmental service called ISP by having a publicly accessible URL via the Internet.

The mapping of PRIVATE-IP into PUBLIC-IP process. Hint

  • PRIVATE-IP => Assigned IP inside a private network which shall be reachable later over the Internet.

  • PUBLIC-IP => Assigned reachable IP over the Internet which is covered via DNS for full-control purposes.


Allah (The GOD of this universe) gives us the brain 🧠 to think and reasoning about everything to make our lives better.


Be aware of wire resistance techniques. It can be the distance between SERVERS on ground. KISS as much as you can.

The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area. Resistance also depends on the material of the conductor. The resistance of a conductor, or circuit element, generally increases with increasing temperature.


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