Reserving the machines

$ oarsub -I -p [CLUSTER_NAME] -l host=[N_HOSTS],walltime=[PERIOD]  -t deploy
or
$ oarsub -p [CLUSTER_NAME] -l host=[N_HOSTS],walltime=[PERIOD] -r [YYYY-MM-DD HH:MM:SS] -t deploy

$ kadeploy3 debian11-base -f $OAR_FILE_NODES -k ~/.ssh/id_rsa.pub

Setting up the Kubernetes cluster

$ ./prepare.sh

Launching the cluster

 ssh root@[MASTER_NODE]
 kubeadm init --config kubeadm-config.yaml

In the output of `kubeadm init` there will be a kubeadm join command, launch it on every desired worker node
For example:
 ssh root@[WORKER_NODE]
 kubeadm join 172.16.52.5:6443 --token [TOKEN] \
--discovery-token-ca-cert-hash sha256:[SHA256_HASH]

Network add-on for Kubernetes

Here we'll use Weave, but another one can be used.
 
 kubectl apply -f https://github.com/weaveworks/weave/releases/download/v2.8.1/weave-daemonset-k8s.yaml
 export KUBECONFIG=/etc/kubernetes/admin.conf

Launch monitoring setup

 ssh root@[MASTER_NODE]
 source PATH/TO/kube_cluster_prep/setups/setup_env_vars.sh
 PATH/TO/kube_cluster_prep/setups/setup_monitoring.sh

Istio mesh setup

On master node download istio:

```
	curl -L https://istio.io/downloadIstio | sh -
```

```
export PATH="$PATH:/root/istio-1.17.2/bin"
```


```
istioctl install -y \
				--set components.egressGateways[0].name=istio-egressgateway \
				--set components.egressGateways[0].enabled=true
```

```
kubectl label namespace default istio-injection=enabled
```

Create TeaStore pod and the generator pods

```
kubectl create -f gen.yaml
```

then create the gateways:

```
kubectl apply -f teastore-gateway.yaml
```

```
kubectl apply -f gen-gateway.yaml
```

Check that the configuration is correct:

```
istioctl analyze
```

Check the load balancer:

```
kubectl get svc istio-ingressgateway -n istio-system
```

if you have pending status in External IP field then export the following variables:

```
export INGRESS_PORT=$(kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.spec.ports[?(@.name=="http2")].nodePort}')
export SECURE_INGRESS_PORT=$(kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.spec.ports[?(@.name=="https")].nodePort}')

export INGRESS_HOST=$(kubectl get po -l istio=ingressgateway -n istio-system -o jsonpath='{.items[0].status.hostIP}')

export GATEWAY_URL=$INGRESS_HOST:$INGRESS_PORT
```

```
echo "http://$GATEWAY_URL/"
```