How to install Red Hat OpenShift CodeReady Containers in Linux

Here is a video tutorial

Scripts and configuration files are available here:

Please bear in mind that the user you are using for the installatiopn (the one that is currently logged in through ssh) has to be in sudoers group.

System requirements:

4 physical CPU cores or vCPU
9 GB of free RAM, so the machine should have at least 12 GB of RAM In total
35 GB of storage space
AMD64/Intel 64
Microsoft Windows 10 (version 1709 or later)
MacOS 10.14 Mojave or later
Red Hat Enterprise Linux/CentOS 7.5 or later

This is an ephemeral cluster setup and you are not supposed to keep any important data or application inside the CRC cluster.

Meant for development and testing
No direct upgrade to the newer version of CRC
Single node OpenShift cluster (common master and worker node)
The cluster monitoring operator will be disabled by default
Running as a virtual machine

OpenShift installation procedure

Go to: https://console.redhat.com/openshift
Register an account if you do not have it.
Login.
Go to the local tab.
Download CRC and pull secret
Upload to server, where you want to install OpenShift.
Extract it

1

tar xvf crc-linux-amd64.tar.xz

Add variable to the .bashrc file

1

echo 'export PATH=$PATH:~/crc-linux-2.29.0-amd64' >> ~/.bashrc

Perform the below command:

1

source ~/.bashrc

Type

1

crc version

to ensure the executable is working fine

Perform the below commands one by one to install OpenShift

1
2
3
4


crc setup
crc config set cpus 4
crc config set memory 10000
crc start -p pull-secret

HAProxy installation procedure

Perform this procedure only on a local network. Exposing an insecure server on the internet has many security implications.

Ensure that the cluster remains running during this procedure.
Install the haproxy package and other utilities by running the script haproxy.sh from here: haproxy.sh
Change permissions for the file

1

chmod +x  haproxy.sh

Run the script

1

./haproxy.sh

Add a wildcard in Adguard Home / Pi-Hole for IP address. See the video.
Now test the cluster with openshift CLI or in short oc

1
2
3
4
5
6
7


echo 'eval $(crc oc-env)' >> ~/.bashrc
source ~/.bashrc
oc login -u kubeadmin https://api.crc.testing:6443
oc get projects
oc get nodes
oc get pods -A
oc get all -A

Stop, delete and cleanup OpenShift

Perform the below commands one by one:

1
2
3


crc stop
crc delete
crc cleanup

Run the below command:

1
2


chmod +x haproxy-remove.sh
./haproxy-remove.sh

The file you will find here: haproxy-remove.sh