K8s Cluster Setup

SUDO Privilege's are required

Privileged access to your Ubuntu System via sudo command is required

Switch to Bash Shell

bash

Verify the SUDO Privileges

sudo apt update -y

Configure Hostname

On Master Node run the below Command

sudo hostname master

On Worker Node 1 run the below Command

sudo hostname worker1

On Worker Node 2 run the below Command

sudo hostname worker2

Clone Training files

Clone the code repository created for this training on all the master and worker Nodes

Step 1: Clone the repository

git clone https://github.com/nishanthkumarpathi/Kubernetes-Advanced-Microfocus.git

Step 2: Switch the directory to GettingStarted folder

cd "Kubernetes-Advanced-Microfocus/00GettingStarted/"

Step 3: Enable Executable permissions

chmod +x *.sh

Run the above commands on all the servers

Docker Installation - Master Node

Run the Below Command to Install Docker on master node

./docker-installation.sh

Logout from the console and login again before you go to next step

Docker Installation - Worker Nodes

Run the Below Command to Install Docker on all worker node

./docker-installation.sh

Logout from the console and login again before you go to next step

Perform Docker Login

Run the below commands to do docker login.

docker login

Proxy Configuration - Micro focus Environment

Perform all the below Proxy Configuration Operations on Master Node and Worker Node

Switch to Bash Shell

bash

Step 1: Create a systemd drop-in directory for the docker service:

sudo mkdir /etc/systemd/system/docker.service.d

Step 2: Create a file called /etc/systemd/system/docker.service.d/http-proxy.conf and add the HTTP_PROXY and HTTPS_PROXY environment variable.

sudo touch /etc/systemd/system/docker.service.d/http-proxy.conf

Note : Use Nano Editor for adding the below lines to the above http-proxy.conf file. You can also use any other editor

sudo nano /etc/systemd/system/docker.service.d/http-proxy.conf

[Service]

Environment="HTTP_PROXY=http://web-proxy.in.softwaregrp.net:8080/"

Environment="HTTPS_PROXY=http://web-proxy.in.softwaregrp.net:8080/"

Environment="NO_PROXY=localhost,127.0.0.1,10.0.0.0/8,192.168.0.0/16"

To Save the File use : Ctrl + X then type "y" then Enter

You need to ensure that NO_PROXY should have your local Network configured, so that local requests to your network are not forwarded to proxy, rather they are sent directly to destination system in the Network

Step 3: Create a systemd drop-in directory for the containerd service:

sudo mkdir -p /etc/systemd/system/containerd.service.d/

Step 4: Create a file called /etc/systemd/system/containerd.service.d/http-proxy.conf and add the HTTP_PROXY and HTTPS_PROXY environment variable.

sudo touch /etc/systemd/system/containerd.service.d/http-proxy.conf

Note : Use Nano Editor for adding the below lines to the above http-proxy.conf file. You can also use any other editor

sudo nano /etc/systemd/system/containerd.service.d/http-proxy.conf

[Service]

Environment="HTTP_PROXY=http://web-proxy.in.softwaregrp.net:8080/"

Environment="HTTPS_PROXY=http://web-proxy.in.softwaregrp.net:8080/"

Environment="NO_PROXY=localhost,127.0.0.1,10.0.0.0/8,192.168.0.0/16"

To Save the File use : Ctrl + X then type "y" then Enter

You need to ensure that NO_PROXY should have your local Network configured, so that local requests to your network are not forwarded to proxy, rather they are sent directly to destination system in the Network

Step 5: Append the Proxy Value is as below to /etc/environment file

sudo nano /etc/environment

append the below line of configuration

export no_proxy=localhost,127.0.0.1,10.0.0.0/8,192.168.0.0/16

To Save the File use : Ctrl + X then type "y" then Enter

Step 6: use systemd as the default driver for docker.

cd ~

sudo cat > daemon.json <<EOF
{
"exec-opts": ["native.cgroupdriver=systemd"]
}
EOF

sudo mv daemon.json /etc/docker/

Step 7: Flush changes

sudo systemctl daemon-reload

sudo systemctl restart docker

sudo systemctl restart containerd

Step 8: Verify that the configuration has been loaded. Observe the Output

sudo systemctl show --property Environment docker

The above command output should return Proxy Environmental Variables that we have configured before.

Press Q to exit from the above command

If you see proxy Environmental Variables in the output, then Goto Step 9.

If you don't observe Proxy Environment Variables, then discuss with your Instructor 😢

Step 9: Pull the Busybox Image, to verify weather docker deamon is able to download or not

perform docker login

docker login

docker pull busybox

In Case if you get a permission error. Please logout of the machine and login again.

If the Step 9 is successful, then good and wait for the Next Instructor Commands

If there is an issue, then inform Instructor.

Now its to go back and install kubernetes. But before you do that confirm with Instructor

Kubernetes Installation - Master Node Installation

Move to the cloned repository

cd "Kubernetes-Advanced-Microfocus/00GettingStarted/"

./k8s-master-containerd.sh

Please observe the output from the above command constantly till it ends.

Kubernetes Installation - Worker Nodes Installation

Move to the cloned repository

cd "Kubernetes-Advanced-Microfocus/00GettingStarted/"

You need to run these below commands on both Worker Nodes

./k8s-worker-containerd.sh

Join Worker Nodes to Master Nodes

On Master Node : Run the following Command

kubeadm token create --print-join-command

Copy the Output of the above command and run that output command on Worker Nodes.

Append "sudo" to the above command while pasting it on Worker Node.

On Worker Nodes : Run the following Command

The below is a sample command. Please use the command that you got from your Kubernetes Master Server

Sample Command look like this

sudo kubeadm join ip:6443 --token XXXXXXX \
--discovery-token-ca-cert-hash \
XXXXXXXX

On Master Node : Run the Below Command

kubectl get nodes

Congrats ! If you see the list of nodes, then you have successfully configured the Kubernetes Cluster