Project 4: Custos setup JS2

Requirements

• Create four VMs on jetstream2
• One for rancher, and three for creating k8s cluster

Deploy Rancher

• Download the code cloudman

• Register rancher instance IP with domain (request AI/TA) - It will look like this, js2-xxx-xxx.jetstream-cloud.org

• get the hostname by running nslookup <ip-address>

• Update cloudman/cloudman-boot/inventory/sample.ini and replace controller and agents with the hostname

• Update ansible_user='exouser', ansible_user_password='<pwd>', and ansible_ssh_private_key_file=<path to local machine id_rsa>

• Update cloudman/cloudman-boot/playbook.yml, remove "rke" if present, under the section 'tags: ["controller", "agent", "rke"]'

• Run the ansible playbook from your local machine, ansible-playbook -i inventory/sample.ini playbook.yml

• * The above commands will setup the environment to deploy rancher. Now, install the rancher using helm chart

• Login to jetstream2 VM using ssh, ssh <ip>

• Add helm repo, helm repo add rancher https://releases.rancher.com/server-charts/stable

• kubectl create namespace cattle-system

• Update helm repos, helm repo update

• Install rancher, helm install -n cattle-system rancher rancher/rancher --set hostname=HOSTNAME --set ingress.tls.source=letsEncrypt --set letsEncrypt.email="[email protected]" --set letsEncrypt.environment="production" --set letsEncrypt.ingress.class=nginx Step 2 : Bootstrap K8 Cluster on Bare Metals Servers With Rancher

• Replace HOSTNAME with your hostname and email with your email

• Check if all the services are up and running kubectl get all --all-namespaces

• Follow the document from team terra if you get certificate error while accessing the rancher ui

• Wait for few minutes to access the rancher from UI

• Access the rancher UI using hostname:nodeport, nodeport starts from 3000 and above

  kubectl get svc -n ingress-nginx

  js2-xxx-xxx.jetstream-cloud.org:<nodeport>

• User name is 'admin' and create password for the first login and follow the 'k8s setup' section to start with k8s cluster setup

Add K8S cluster

• Login to rancher and click on add cluster

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• Select 'Create a new kubernetes cluster using existing nodes'

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• Give a name to cluster and scroll down to bottom of the page and click on next

• Add public ip under the cluster options and select node roles for the first VM and just worker role for the rest of the VM

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• Copy the docker command and run in all the VMs and click on done

• Wait for 5/10 mins and cluster will be in active state

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