+function install_k8s_storageclass() {
+ echo "Installing OpenEBS"
+ helm repo add openebs https://openebs.github.io/charts
+ helm repo update
+ helm install --create-namespace --namespace openebs openebs openebs/openebs --version 1.12.0
+ helm ls -n openebs
+ local storageclass_timeout=400
+ local counter=0
+ local storageclass_ready=""
+ echo "Waiting for storageclass"
+ while (( counter < storageclass_timeout ))
+ do
+ kubectl get storageclass openebs-hostpath &> /dev/null
+
+ if [ $? -eq 0 ] ; then
+ echo "Storageclass available"
+ storageclass_ready="y"
+ break
+ else
+ counter=$((counter + 15))
+ sleep 15
+ fi
+ done
+ [ -n "$storageclass_ready" ] || FATAL "Storageclass not ready after $storageclass_timeout seconds. Cannot install openebs"
+ kubectl patch storageclass openebs-hostpath -p '{"metadata": {"annotations":{"storageclass.kubernetes.io/is-default-class":"true"}}}'
+}
+
+function install_k8s_metallb() {
+ METALLB_IP_RANGE=$DEFAULT_IP/32
+ kubectl apply -f ${OSM_DEVOPS}/installers/k8s/metallb/metallb.yaml \
+ || FATAL "Cannot install MetalLB"
+ echo "apiVersion: v1
+kind: ConfigMap
+metadata:
+ namespace: metallb-system
+ name: config
+data:
+ config: |
+ address-pools:
+ - name: default
+ protocol: layer2
+ addresses:
+ - $METALLB_IP_RANGE" | kubectl apply -f - \
+ || FATAL "Cannot apply MetalLB ConfigMap"
+}
+
+#installs metallb from helm
+function install_helm_metallb() {
+ METALLB_IP_RANGE=$DEFAULT_IP/32
+ 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
+}
+