Gangams/cluster creation scripts

scripts/cluster-creation/README.md

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+# Instructions to create k8s clusters
+
+## On-Prem K8s Cluster
+
+on-prem k8s cluster can be created on any VM or physical machine using kind.
+
+```
+bash onprem-k8s.sh --cluster-name <name-of-the-cluster>
+```
+
+## AKS-Engine cluster
+
+aks-engine is unmanaged cluster in azure and you can use below command to create the cluster in azure.
+
+```
+
+# Either you can reuse existing service principal or create one with below instructions
+subscriptionId="<subscription id>"
+az account set -s ${subscriptionId}
+sp=$(az ad sp create-for-rbac --role="Contributor" --scopes="/subscriptions/${subscriptionId}")
+# get the appId (i.e. clientid) and password (i.e. clientSecret)
+echo $sp
+
+clientId=$(echo $sp | jq '.appId')
+clientSecret=$(echo $sp | jq '.password')
+
+# create the aks-engine
+bash aks-engine.sh --subscription-id "<subscriptionId>" --client-id "<clientId>" --client-secret "<clientSecret>" --dns-prefix "<clusterDnsPrefix>" --location "<location>"
+```
+
+## ARO v4 Cluster
+
+Azure Redhat Openshift v4 cluster can be created with below command.
+
+> Note: Because of the cleanup policy on internal subscriptions, cluster creation can fail if you dont change cleanup service to none on the subnets of aro vnet before creation.
+```
+bash aro-v4.sh --subscription-id "<subscriptionId>" --resource-group "<rgName>" --cluster-name "<clusterName>" --location "<location>"
+```
+## Azure Arc K8s cluster
+
+you can connect on-prem k8s cluster or unmanaged k8s cluster such as aks-engine to azure through azure arc.
+
+```
+bash arc-k8s-cluster.sh --subscription-id "<subId>" --resource-group "<rgName>" --cluster-name "<clusterName>" --location "<location>" --kube-context "<contextofexistingcluster>"
+```

scripts/cluster-creation/aks-engine.sh

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+#!/bin/bash
+set -e
+TEMP_DIR=temp-$RANDOM
+DEFAULT_ONPREM_K8S_CLUSTER="aks-engine-k8s-test"
+AKS_ENGINE_VERSION="v0.54.0"
+
+download-aks-engine()
+{
+    sudo curl -LO https://github.com/Azure/aks-engine/releases/download/${AKS_ENGINE_VERSION}/aks-engine-v0.54.0-linux-amd64.tar.gz
+    sudo tar -xvf aks-engine-${AKS_ENGINE_VERSION}-linux-amd64.tar.gz
+    sudo mv aks-engine-${AKS_ENGINE_VERSION}-linux-amd64 aks-engine
+    sudo mv -f aks-engine/aks-engine /usr/local/bin
+}
+
+
+usage()
+{
+    local basename=`basename $0`
+    echo
+    echo "create aks-engine cluster:"
+    echo "$basename deploy --subscription-id <subscriptionId> --client-id <clientId> --client-secret <clientSecret> --dns-prefix <dns-prefix> --location <location>"
+}
+
+parse_args()
+{
+
+ if [ $# -le 1 ]
+  then
+    usage
+    exit 1
+ fi
+
+# Transform long options to short ones
+for arg in "$@"; do
+  shift
+  case "$arg" in
+    "--subscription-id")  set -- "$@" "-s" ;;
+    "--client-id") set -- "$@" "-c" ;;
+    "--client-secret") set -- "$@" "-w" ;;
+    "--dns-prefix") set -- "$@" "-d" ;;
+    "--location") set -- "$@" "-l" ;;
+    "--"*)   usage ;;
+    *)        set -- "$@" "$arg"
+  esac
+done
+
+local OPTIND opt
+
+while getopts 'hs:c:w:d:l:' opt; do
+    case "$opt" in
+      h)
+      usage
+        ;;
+
+      s)
+        subscriptionId="$OPTARG"
+        echo "subscriptionId is $OPTARG"
+        ;;
+
+      c)
+        clientId="$OPTARG"
+        echo "clientId is $OPTARG"
+        ;;
+
+      w)
+        clientSecret="$OPTARG"
+        echo "clientSecret is $OPTARG"
+        ;;
+
+      d)
+        dnsPrefix="$OPTARG"
+        echo "dnsPrefix is $OPTARG"
+        ;;
+
+      l)
+        location="$OPTARG"
+        echo "location is $OPTARG"
+        ;;
+
+      ?)
+        usage
+        exit 1
+        ;;
+    esac
+  done
+  shift "$(($OPTIND -1))"
+
+
+}
+create_cluster()
+{
+
+sudo touch kubernetes.json
+sudo chmod 777 kubernetes.json
+# For docker runtime, remove kubernetesConfig block
+cat >> kubernetes.json <<EOL
+{
+  "apiVersion": "vlabs",
+  "properties": {
+    "orchestratorProfile": {
+      "orchestratorType": "Kubernetes",
+	   "orchestratorRelease": "1.16",
+      "kubernetesConfig": {
+       "containerRuntime": "containerd"
+       }
+    },
+    "masterProfile": {
+      "count": 1,
+      "dnsPrefix": "",
+      "vmSize": "Standard_D2_v3"
+    },
+    "agentPoolProfiles": [
+      {
+        "name": "agentpool1",
+        "count": 2,
+        "vmSize": "Standard_D2_v3"
+      }
+    ],
+    "linuxProfile": {
+      "adminUsername": "azureuser",
+      "ssh": {
+        "publicKeys": [
+          {
+            "keyData": ""
+          }
+        ]
+      }
+    },
+    "servicePrincipalProfile": {
+      "clientId": "",
+      "secret": ""
+    }
+  }
+}
+EOL
+
+echo "deploying aks-engine cluster ..."
+sudo aks-engine deploy --subscription-id ${subscriptionId} --client-id ${clientId} --client-secret ${clientSecret} --dns-prefix ${dnsPrefix} --location ${location} --api-model  kubernetes.json
+echo "deploying of aks-engine cluster completed."
+
+}
+
+
+
+echo "creating aks-engine k8s cluster ..."
+echo "AKS-ENGINE version: ${AKS_ENGINE_VERSION}"
+cd ~
+echo "creating temp directory":$TEMP_DIR
+sudo mkdir $TEMP_DIR && cd $TEMP_DIR
+
+echo "validate args"
+parse_args $@
+
+echo "download aks-engine"
+download-aks-engine
+
+echo "creating cluster: ${ClusterName}"
+create_cluster
+echo "creating aks-engine cluster completed."
+
+echo "changing file permissions to access the kubeconfig"
+sudo chmod -R 777  ~/${TEMP_DIR}/_output
+echo "kubeconfig of this cluster should be under ~/${TEMP_DIR}/_output/${dnsPrefix}/kubeconfig"