Must have skills for DevOps Engineer and Free methods to learn them

Many people have asked us how to become a DevOps engineer so in this post we will show you the skills and technologies which can get you there.

Before we start we should know what is “DevOps”. As you can see the word is combination of “Developer” and “Operations”. So a DevOps engineer is suppose to be a bridge between the development and operations processes.

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Let’s see which skills do you need to become a DevOps engineer. In this post we will also discuss how you can acquire these skills for free. We have also mentioned some advanced paid courses which can help you acquire these skills quickly.

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Solved: docker – error during connect

 

sagu@sagu-pc MINGW64 ~

$ docker image ls

error during connect: Get http://%2F%2F.%2Fpipe%2Fdocker_engine/v1.29/images/json: open //./pipe/docker_engine: The system cannot find the file specified. In the default daemon configuration on Windows, the docker client must be run elevated to connect. This error may also indicate that the docker daemon is not running.

sagu@sagu-pc MINGW64 ~

If you are getting above error while running the docker commands in Docker Quickstart Terminal then you can have one of the listed problem.

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Solved: How to resize Docker Quickstart Terminal Window

By default in Windows 7 Docker Quickstart Terminal Window size will be small. But it can be very annoying to work in such small window.

Here we will show you how to increase the window size as per your requirement.

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Solved: How to cap or limit memory usage of a docker container

In this post we will see how we can cap or restrict the maximum amount of memory the container can use.

Let’s first see the current usage of container id ec6ed4af7c34 with “docker stats”.

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Solved: Install ifconfig and ssh in Ubuntu

In this post we will see how to install ifconfig and ssh in Ubuntu 16.04 Xenial Xerus. You can install both or either of them independently .

ifconfig

By default you can check IP details in Ubuntu using

ip addr

But if you are more comfortable with “ifconfig”  then follow on.

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Ensure that your Ubuntu instance is connected to internet or to your local package repository server from which it can pull packages.

If you need ifconfig in your ubuntu server use following commands.

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Solved: How to create an image of a docker container.

So you have completed all the installation on a docker container and now you want to keep it as golden image.

Golden images are useful when you want to create more containers with same configuration. This also ensure that when you ship an image from Dev to UAT or Prod it will be exactly same as it was when you tested it.

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Solved: Error when allocating new name – Docker

Error response from daemon: Error when allocating new name: Conflict. The container name "/webserver" is already in use by container 6c34a8wetwyetwy7463462d329c9601812tywetdyud76767d65f7dc7ea58d8541. You have to remove (or rename) that container to be able to reuse that name.

If you see the above error it is because a container with same name exist.

Let’s check our running containers

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