Update K8s version for community installer to 1.20.11

Change-Id: I835da2f886f5bbf9eb342d52362a8a005710c255
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>

installers/full_install_osm.sh

@@ -462,17 +462,19 @@ function juju_createcontroller() {
 }
 
 function juju_addk8s() {
-    cat $HOME/.kube/config | juju add-k8s $OSM_VCA_K8S_CLOUDNAME --controller $OSM_STACK_NAME --storage openebs-hostpath
+    cat $HOME/.kube/config | juju add-k8s $OSM_VCA_K8S_CLOUDNAME --controller $OSM_STACK_NAME --storage openebs-hostpath \
+    || FATAL "Failed to add K8s endpoint and credential for controller $OSM_STACK_NAME in cloud $OSM_VCA_K8S_CLOUDNAME"
 }
 
 function juju_createcontroller_k8s(){
-    cat $HOME/.kube/config | juju add-k8s $OSM_VCA_K8S_CLOUDNAME --client
+    cat $HOME/.kube/config | juju add-k8s $OSM_VCA_K8S_CLOUDNAME --client \
+    || FATAL "Failed to add K8s endpoint and credential for client in cloud $OSM_VCA_K8S_CLOUDNAME"
     juju bootstrap $OSM_VCA_K8S_CLOUDNAME $OSM_STACK_NAME  \
             --config controller-service-type=loadbalancer \
-            --agent-version=$JUJU_AGENT_VERSION
+            --agent-version=$JUJU_AGENT_VERSION \
+    || FATAL "Failed to bootstrap controller $OSM_STACK_NAME in cloud $OSM_VCA_K8S_CLOUDNAME"
 }
 
-
 function juju_addlxd_cloud(){
     mkdir -p /tmp/.osm
     OSM_VCA_CLOUDNAME="lxd-cloud"
@@ -513,7 +515,6 @@ EOF
     juju controller-config features=[k8s-operators]
 }
 
-
 function juju_createproxy() {
     check_install_iptables_persistent
 
@@ -802,7 +803,8 @@ function install_kube() {
     sudo add-apt-repository "deb https://apt.kubernetes.io/ kubernetes-xenial main"
     sudo apt-get update
     echo "Installing Kubernetes Packages ..."
-    sudo apt-get install -y kubelet=1.15.0-00 kubeadm=1.15.0-00 kubectl=1.15.0-00
+    K8S_VERSION=1.20.11-00
+    sudo apt-get install -y kubelet=${K8S_VERSION} kubeadm=${K8S_VERSION} kubectl=${K8S_VERSION}
     sudo apt-mark hold kubelet kubeadm kubectl
 }
 
@@ -823,10 +825,9 @@ function kube_config_dir() {
 
 function install_k8s_storageclass() {
     echo "Installing OpenEBS"
-    kubectl create ns openebs
     helm repo add openebs https://openebs.github.io/charts
     helm repo update
-    helm install --namespace openebs openebs openebs/openebs --version 1.12.0
+    helm install --create-namespace --namespace openebs openebs openebs/openebs --version 1.12.0
     helm ls -n openebs
     local storageclass_timeout=400
     local counter=0
@@ -851,7 +852,8 @@ function install_k8s_storageclass() {
 
 function install_k8s_metallb() {
     METALLB_IP_RANGE=$DEFAULT_IP-$DEFAULT_IP
-    cat ${OSM_DEVOPS}/installers/k8s/metallb/metallb.yaml | kubectl apply -f -
+    kubectl apply -f ${OSM_DEVOPS}/installers/k8s/metallb/metallb.yaml \
+    || FATAL "Cannot install MetalLB"
     echo "apiVersion: v1
 kind: ConfigMap
 metadata:
@@ -863,8 +865,105 @@ data:
     - name: default
       protocol: layer2
       addresses:
-      - $METALLB_IP_RANGE" | kubectl apply -f -
+      - $METALLB_IP_RANGE" | kubectl apply -f - \
+    || FATAL "Cannot apply MetalLB ConfigMap"
+}
+
+#installs metallb from helm
+function install_helm_metallb() {
+    METALLB_IP_RANGE=$DEFAULT_IP-$DEFAULT_IP
+    echo "configInline:
+  address-pools:
+   - name: default
+     protocol: layer2
+     addresses:
+     - $METALLB_IP_RANGE" | sudo tee -a $OSM_DOCKER_WORK_DIR/metallb-config.yaml
+    helm repo add metallb https://metallb.github.io/metallb
+    helm install --create-namespace --namespace metallb-system metallb metallb/metallb -f $OSM_DOCKER_WORK_DIR/metallb-config.yaml
+}
+
+#checks openebs and metallb readiness
+function check_for_readiness() {
+    # Default input values
+    sampling_period=2       # seconds
+    time_for_readiness=20   # seconds ready
+    time_for_failure=200    # seconds broken
+    OPENEBS_NAMESPACE=openebs
+    METALLB_NAMESPACE=metallb-system
+    # STACK_NAME=osm          # By default, "osm"
+
+    # Equivalent number of samples
+    oks_threshold=$((time_for_readiness/${sampling_period}))     # No. ok samples to declare the system ready
+    failures_threshold=$((time_for_failure/${sampling_period}))  # No. nok samples to declare the system broken
+    failures_in_a_row=0
+    oks_in_a_row=0
+
+    ####################################################################################
+    # Loop to check system readiness
+    ####################################################################################
+    while [[ (${failures_in_a_row} -lt ${failures_threshold}) && (${oks_in_a_row} -lt ${oks_threshold}) ]]
+    do
+        # State of OpenEBS
+        OPENEBS_STATE=$(kubectl get pod -n ${OPENEBS_NAMESPACE} --no-headers 2>&1)
+        OPENEBS_READY=$(echo "${OPENEBS_STATE}" | awk '$2=="1/1" || $2=="2/2" {printf ("%s\t%s\t\n", $1, $2)}')
+        OPENEBS_NOT_READY=$(echo "${OPENEBS_STATE}" | awk '$2!="1/1" && $2!="2/2" {printf ("%s\t%s\t\n", $1, $2)}')
+        COUNT_OPENEBS_READY=$(echo "${OPENEBS_READY}"| grep -v -e '^$' | wc -l)
+        COUNT_OPENEBS_NOT_READY=$(echo "${OPENEBS_NOT_READY}" | grep -v -e '^$' | wc -l)
+
+        # State of MetalLB
+        METALLB_STATE=$(kubectl get pod -n ${METALLB_NAMESPACE} --no-headers 2>&1)
+        METALLB_READY=$(echo "${METALLB_STATE}" | awk '$2=="1/1" || $2=="2/2" {printf ("%s\t%s\t\n", $1, $2)}')
+        METALLB_NOT_READY=$(echo "${METALLB_STATE}" | awk '$2!="1/1" && $2!="2/2" {printf ("%s\t%s\t\n", $1, $2)}')
+        COUNT_METALLB_READY=$(echo "${METALLB_READY}" | grep -v -e '^$' | wc -l)
+        COUNT_METALLB_NOT_READY=$(echo "${METALLB_NOT_READY}" | grep -v -e '^$' | wc -l)
+
+        # OK sample
+        if [[ $((${COUNT_OPENEBS_NOT_READY}+${COUNT_METALLB_NOT_READY})) -eq 0 ]]
+        then
+            ((++oks_in_a_row))
+            failures_in_a_row=0
+            echo -ne ===\> Successful checks: "${oks_in_a_row}"/${oks_threshold}\\r
+        # NOK sample
+        else
+            ((++failures_in_a_row))
+            oks_in_a_row=0
+            echo
+            echo Bootstraping... "${failures_in_a_row}" checks of ${failures_threshold}
+
+            # Reports failed pods in OpenEBS
+            if [[ "${COUNT_OPENEBS_NOT_READY}" -ne 0 ]]
+            then
+                echo "OpenEBS: Waiting for ${COUNT_OPENEBS_NOT_READY} of $((${COUNT_OPENEBS_NOT_READY}+${COUNT_OPENEBS_READY})) pods to be ready:"
+                echo "${OPENEBS_NOT_READY}"
+                echo
+            fi
+
+            # Reports failed statefulsets
+            if [[ "${COUNT_METALLB_NOT_READY}" -ne 0 ]]
+            then
+                echo "MetalLB: Waiting for ${COUNT_METALLB_NOT_READY} of $((${COUNT_METALLB_NOT_READY}+${COUNT_METALLB_READY})) pods to be ready:"
+                echo "${METALLB_NOT_READY}"
+                echo
+            fi
+        fi
+
+        #------------ NEXT SAMPLE
+        sleep ${sampling_period}
+    done
+
+    ####################################################################################
+    # OUTCOME
+    ####################################################################################
+    if [[ (${failures_in_a_row} -ge ${failures_threshold}) ]]
+    then
+        echo
+        FATAL "K8S CLUSTER IS BROKEN"
+    else
+        echo
+        echo "K8S CLUSTER IS READY"
+    fi
 }
+
 #deploys flannel as daemonsets
 function deploy_cni_provider() {
     CNI_DIR="$(mktemp -d -q --tmpdir "flannel.XXXXXX")"
@@ -1191,8 +1290,9 @@ function install_lightweight() {
         track install_helm
         install_k8s_storageclass
         track k8s_storageclass
-        install_k8s_metallb
+        install_helm_metallb
         track k8s_metallb
+        check_for_readiness
     else
         #install_docker_compose
         [ -n "$INSTALL_NODOCKER" ] || init_docker_swarm

installers/k8s/metallb/metallb.yaml

@@ -156,7 +156,7 @@ roleRef:
   kind: Role
   name: leader-election
 ---
-apiVersion: apps/v1beta2
+apiVersion: apps/v1
 kind: DaemonSet
 metadata:
   namespace: metallb-system
@@ -209,7 +209,7 @@ spec:
               add:
                 - net_raw
 ---
-apiVersion: apps/v1beta2
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   namespace: metallb-system