MicroK8s Single-Node Deployment

This guide illustrates the steps involved in deploying the CIM Solution on microk8s distribution of  Kubernetes. 

Hardware Requirement

Deployment 

microk8s is currently supported for Single-Node Deployment only. 

update the system to latest updates

sudo apt-get -y update

Install core and  microk8s 

sudo snap install core
snap install microk8s --classic --channel=1.24

if you get error like below 

error: cannot install "microk8s": persistent network error: Post
       https://api.snapcraft.io/v2/snaps/refresh: dial tcp: lookup api.snapcraft.io: Temporary
       failure in name resolution

then try restarting the systemd-resolver by executing

systemctl restart systemd-resolved.service

Update the user permissions  (  If running other than root )

sudo usermod -a -G microk8s $USER
sudo chown -f -R $USER ~/.kube

Wait for the microk8s to bootstrap properly

microk8s status --wait-ready

Install Addons for the microk8s

Enable helm

microk8s enable helm3

Enable local-Storage

microk8s enable hostpath-storage

Enable dns 

microk8s enable dns 

Enable metrics-server

microk8s enable metrics-server

Enable metallb

microk8s enable metallb

when requested for the IP Range, please enter the primary IP of your System as IP-IP or IP/32 format. for example if your main IP is 192.168.2.230, you can enter 192.168.2.230-192.168.2.230 or 192.168.2.230/32, 

OR

if you have an IP Range , enter the range like 192.168.2.230-192.168.2.239

You can use this command to get the IP Address ip route get $(ip route show 0.0.0.0/0 | grep -oP 'via \K\S+') | grep -oP 'src \K\S+' ( approx )

Disable the existing helm command ( if you already had deployed helm in k3s )

microk8s comes with its own helm command, so we need to disable the external helm

mv /usr/local/bin/helm{,-orig}

Microk8s commands aliases

If you had previously deployed the K3s , edit your $HOME/.bashrc  file  and remove the line K3SCONFIG=/var/lib/rancher/k3s.yaml  and add these aliases 

alias kubectl='microk8s kubectl'
alias k='microk8s kubectl'
alias helm='microk8s helm3'

source .bashrc

source $HOME/.bashrc

update the .kube/config with microk8s config

microk8s.kubectl config view > $HOME/.kube/config

Once ready check the status of your cluster by running

k get pods -A

Deploy the Traefik 

change the directory 

cd cim-solution/kubernetes

deploy the traefik helm chart

helm upgrade --install=true  --wait=true --debug  --namespace=traefik-ingress --create-namespace --values=external/traefik/values.yaml traefik  external/traefik

You can now deploy the CIM Solution using this document  Expertflow CX Deployment on Kubernetes