12/28/2021

Run Docker Centos

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Run docker centos 7

The command below should install and run Eclipse application in Docker containers. It is going to pull the image since it is already locally available. $ sudo docker run -rm -ti -net=host -e DISPLAY=:0 psharkey/eclipse. You should see it pulling eclipse image: Eclipse application should open with X server and you can carry out normal eclipse. Starting sshd in a Centos 7 OS Docker Container on docker run using both ENTRYPOINT and CMD. Ask Question Asked 4 years, 2 months ago. Active 4 years, 1 month ago.

Recently I’ve been playing with containers a little bit in my lab. Today I’m going to show you how to get a Docker engine running on a CentOS 7 VM running on an ESXi host. It’s surprisingly easy!

First, what is Docker? It’s an engine that lays on top of an existing host OS and basically removes the “Guest OS” abstraction layer from the mix. This is good because the Guest OS is a big resource hog when you start having several of them per host:

(I stole this from the Docker site. Check it out there as it gives a much more in depth look @ the technology)

So what does this mean? Is this (potentially) bad news for VMware and MicroSoft?

Run Docker Centos 7

Short answer: yes.

Long answer: Yeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeesssssssssssssssssssssssssssssssssssssssssssss*

*VMware and MS are working on projects to get in on the containery goodness, so I won’t speak about that here. Instead I’m going to walk through how to set up your first Docker engine ON CentOS ON ESXi in your existing vSphere environment.

Run Docker Centos Download

    1. See my homelab articles if you need help with this part
  1. Download CentOS 7 ISO (I grabbed the minimal ISO because I want more exposure to the CLI & learning how to do things manually really brings it home for me).
  2. Install CentOS as a VM into your environment (I’m spinning it up on VMware Workstation, then I’ll move it over to my homelab):
  3. Create root password and an admin user:
  4. Make sure it can access the internet (test with yum install open-vm-tools if you are keeping the VM around):
    1. Yum install docker
    2. Systemctl start docker
    3. Systemctl status docker
    4. Systemctl enable docker
  5. If you did everything correctly, type in the command docker run hello-world and you should see the following output:

Run Docker Centos 7

That’s it! Depending on how much time I get with it, I’ll start playing with orchestrator & tying my homelab up to AWS for container deployments next.

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