installers/install_cluster_addons.sh

   1 #!/bin/bash
   2 #
   3 #   Licensed under the Apache License, Version 2.0 (the "License");
   4 #   you may not use this file except in compliance with the License.
   5 #   You may obtain a copy of the License at
   6 #
   7 #       http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 #   Unless required by applicable law or agreed to in writing, software
  10 #   distributed under the License is distributed on an "AS IS" BASIS,
  11 #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 #   See the License for the specific language governing permissions and
  13 #   limitations under the License.
  14 #
  15
  16 set +eux
  17
  18 function install_k8s_storageclass() {
  19     [ -z "${DEBUG_INSTALL}" ] || DEBUG beginning of function
  20     # Openebs versions can be found here: https://github.com/openebs/openebs/releases
  21     OPENEBS_VERSION="3.7.0"
  22     echo "Installing OpenEBS"
  23     helm repo add openebs https://openebs.github.io/charts
  24     helm repo update
  25     helm install --create-namespace --namespace openebs openebs openebs/openebs --version ${OPENEBS_VERSION}
  26     helm ls -n openebs
  27     local storageclass_timeout=400
  28     local counter=0
  29     local storageclass_ready=""
  30     echo "Waiting for storageclass"
  31     while (( counter < storageclass_timeout ))
  32     do
  33         kubectl get storageclass openebs-hostpath &> /dev/null
  34
  35         if [ $? -eq 0 ] ; then
  36             echo "Storageclass available"
  37             storageclass_ready="y"
  38             break
  39         else
  40             counter=$((counter + 15))
  41             sleep 15
  42         fi
  43     done
  44     [ -n "$storageclass_ready" ] || FATAL_TRACK k8scluster "Storageclass not ready after $storageclass_timeout seconds. Cannot install openebs"
  45     kubectl patch storageclass openebs-hostpath -p '{"metadata": {"annotations":{"storageclass.kubernetes.io/is-default-class":"true"}}}'
  46     [ -z "${DEBUG_INSTALL}" ] || DEBUG end of function
  47 }
  48
  49 #installs metallb from helm
  50 function install_helm_metallb() {
  51     [ -z "${DEBUG_INSTALL}" ] || DEBUG beginning of function
  52     echo "Installing MetalLB"
  53     METALLB_VERSION="0.13.10"
  54     helm repo add metallb https://metallb.github.io/metallb
  55     helm repo update
  56     helm install --create-namespace --namespace metallb-system metallb metallb/metallb --version ${METALLB_VERSION}
  57     [ -z "${DEBUG_INSTALL}" ] || DEBUG end of function
  58 }
  59
  60 function configure_ipaddresspool_metallb() {
  61     [ -z "${DEBUG_INSTALL}" ] || DEBUG beginning of function
  62     echo "Creating IP address pool manifest: ${OSM_CLUSTER_WORK_DIR}/metallb-ipaddrpool.yaml"
  63     METALLB_IP_RANGE="$DEFAULT_IP/32"
  64     echo "apiVersion: metallb.io/v1beta1
  65 kind: IPAddressPool
  66 metadata:
  67   name: first-pool
  68   namespace: metallb-system
  69 spec:
  70   addresses:
  71   - ${METALLB_IP_RANGE}" | sudo tee -a ${OSM_CLUSTER_WORK_DIR}/metallb-ipaddrpool.yaml
  72     echo "Applying IP address pool manifest: kubectl apply -f ${OSM_CLUSTER_WORK_DIR}/metallb-ipaddrpool.yaml"
  73     kubectl apply -f ${OSM_CLUSTER_WORK_DIR}/metallb-ipaddrpool.yaml || FATAL_TRACK k8scluster "Cannot create IP address Pool in MetalLB"
  74     [ -z "${DEBUG_INSTALL}" ] || DEBUG end of function
  75 }
  76
  77 #installs cert-manager
  78 function install_helm_certmanager() {
  79     [ -z "${DEBUG_INSTALL}" ] || DEBUG beginning of function
  80     echo "Installing cert-manager"
  81     CERTMANAGER_VERSION="v1.9.1"
  82     helm repo add jetstack https://charts.jetstack.io
  83     helm repo update
  84     helm install cert-manager --create-namespace --namespace cert-manager jetstack/cert-manager \
  85         --version ${CERTMANAGER_VERSION} --set installCRDs=true --set prometheus.enabled=false \
  86         --set clusterResourceNamespace=osm \
  87         --set extraArgs="{--enable-certificate-owner-ref=true}"
  88     [ -z "${DEBUG_INSTALL}" ] || DEBUG end of function
  89 }
  90
  91 #installs nginx
  92 function install_helm_nginx() {
  93     [ -z "${DEBUG_INSTALL}" ] || DEBUG beginning of function
  94     echo "Installing nginx"
  95     NGINX_VERSION="4.10.0"
  96     ANNOTATIONS='--set controller.service.annotations."service\.beta\.kubernetes\.io/azure-load-balancer-health-probe-request-path"=/healthz'
  97     ANNOTATIONS=${ANNOTATIONS:-""}
  98     helm upgrade --install ingress-nginx ingress-nginx \
  99         --repo https://kubernetes.github.io/ingress-nginx --version ${NGINX_VERSION} \
 100         --namespace ingress-nginx --create-namespace ${ANNOTATIONS}
 101     # Wait until ready
 102     kubectl wait --namespace ingress-nginx \
 103         --for=condition=ready pod \
 104         --selector=app.kubernetes.io/component=controller \
 105         --timeout=120s
 106     [ -z "${DEBUG_INSTALL}" ] || DEBUG end of function
 107 }
 108
 109 #checks openebs, metallb and cert-manager readiness
 110 function check_for_readiness() {
 111     [ -z "${DEBUG_INSTALL}" ] || DEBUG beginning of function
 112     # Default input values
 113     sampling_period=2       # seconds
 114     time_for_readiness=20   # seconds ready
 115     time_for_failure=200    # seconds broken
 116     OPENEBS_NAMESPACE=openebs
 117     METALLB_NAMESPACE=metallb-system
 118     CERTMANAGER_NAMESPACE=cert-manager
 119     # STACK_NAME=osm          # By default, "osm"
 120
 121     # Equivalent number of samples
 122     oks_threshold=$((time_for_readiness/${sampling_period}))     # No. ok samples to declare the system ready
 123     failures_threshold=$((time_for_failure/${sampling_period}))  # No. nok samples to declare the system broken
 124     failures_in_a_row=0
 125     oks_in_a_row=0
 126
 127     ####################################################################################
 128     # Loop to check system readiness
 129     ####################################################################################
 130     while [[ (${failures_in_a_row} -lt ${failures_threshold}) && (${oks_in_a_row} -lt ${oks_threshold}) ]]
 131     do
 132         # State of OpenEBS
 133         OPENEBS_STATE=$(kubectl get pod -n ${OPENEBS_NAMESPACE} --no-headers 2>&1)
 134         OPENEBS_READY=$(echo "${OPENEBS_STATE}" | awk '$2=="1/1" || $2=="2/2" {printf ("%s\t%s\t\n", $1, $2)}')
 135         OPENEBS_NOT_READY=$(echo "${OPENEBS_STATE}" | awk '$2!="1/1" && $2!="2/2" {printf ("%s\t%s\t\n", $1, $2)}')
 136         COUNT_OPENEBS_READY=$(echo "${OPENEBS_READY}"| grep -v -e '^$' | wc -l)
 137         COUNT_OPENEBS_NOT_READY=$(echo "${OPENEBS_NOT_READY}" | grep -v -e '^$' | wc -l)
 138
 139         # State of MetalLB
 140         METALLB_STATE=$(kubectl get pod -n ${METALLB_NAMESPACE} --no-headers 2>&1)
 141         METALLB_READY=$(echo "${METALLB_STATE}" | awk '$2=="1/1" || $2=="4/4" {printf ("%s\t%s\t\n", $1, $2)}')
 142         METALLB_NOT_READY=$(echo "${METALLB_STATE}" | awk '$2!="1/1" && $2!="4/4" {printf ("%s\t%s\t\n", $1, $2)}')
 143         COUNT_METALLB_READY=$(echo "${METALLB_READY}" | grep -v -e '^$' | wc -l)
 144         COUNT_METALLB_NOT_READY=$(echo "${METALLB_NOT_READY}" | grep -v -e '^$' | wc -l)
 145
 146         # State of CertManager
 147         CERTMANAGER_STATE=$(kubectl get pod -n ${CERTMANAGER_NAMESPACE} --no-headers 2>&1)
 148         CERTMANAGER_READY=$(echo "${CERTMANAGER_STATE}" | awk '$2=="1/1" || $2=="2/2" {printf ("%s\t%s\t\n", $1, $2)}')
 149         CERTMANAGER_NOT_READY=$(echo "${CERTMANAGER_STATE}" | awk '$2!="1/1" && $2!="2/2" {printf ("%s\t%s\t\n", $1, $2)}')
 150         COUNT_CERTMANAGER_READY=$(echo "${CERTMANAGER_READY}" | grep -v -e '^$' | wc -l)
 151         COUNT_CERTMANAGER_NOT_READY=$(echo "${CERTMANAGER_NOT_READY}" | grep -v -e '^$' | wc -l)
 152
 153         # OK sample
 154         if [[ $((${COUNT_OPENEBS_NOT_READY}+${COUNT_METALLB_NOT_READY})) -eq 0 ]]
 155         then
 156             ((++oks_in_a_row))
 157             failures_in_a_row=0
 158             echo -ne ===\> Successful checks: "${oks_in_a_row}"/${oks_threshold}\\r
 159         # NOK sample
 160         else
 161             ((++failures_in_a_row))
 162             oks_in_a_row=0
 163             echo
 164             echo Bootstraping... "${failures_in_a_row}" checks of ${failures_threshold}
 165
 166             # Reports failed pods in OpenEBS
 167             if [[ "${COUNT_OPENEBS_NOT_READY}" -ne 0 ]]
 168             then
 169                 echo "OpenEBS: Waiting for ${COUNT_OPENEBS_NOT_READY} of $((${COUNT_OPENEBS_NOT_READY}+${COUNT_OPENEBS_READY})) pods to be ready:"
 170                 echo "${OPENEBS_NOT_READY}"
 171                 echo
 172             fi
 173
 174             # Reports failed pods in MetalLB
 175             if [[ "${COUNT_METALLB_NOT_READY}" -ne 0 ]]
 176             then
 177                 echo "MetalLB: Waiting for ${COUNT_METALLB_NOT_READY} of $((${COUNT_METALLB_NOT_READY}+${COUNT_METALLB_READY})) pods to be ready:"
 178                 echo "${METALLB_NOT_READY}"
 179                 echo
 180             fi
 181
 182             # Reports failed pods in CertManager
 183             if [[ "${COUNT_CERTMANAGER_NOT_READY}" -ne 0 ]]
 184             then
 185                 echo "CertManager: Waiting for ${COUNT_CERTMANAGER_NOT_READY} of $((${COUNT_CERTMANAGER_NOT_READY}+${COUNT_CERTMANAGER_READY})) pods to be ready:"
 186                 echo "${CERTMANAGER_NOT_READY}"
 187                 echo
 188             fi
 189         fi
 190
 191         #------------ NEXT SAMPLE
 192         sleep ${sampling_period}
 193     done
 194
 195     ####################################################################################
 196     # OUTCOME
 197     ####################################################################################
 198     if [[ (${failures_in_a_row} -ge ${failures_threshold}) ]]
 199     then
 200         echo
 201         FATAL_TRACK k8scluster "K8S CLUSTER IS BROKEN"
 202     else
 203         echo
 204         echo "K8S CLUSTER IS READY"
 205     fi
 206     [ -z "${DEBUG_INSTALL}" ] || DEBUG end of function
 207 }
 208
 209 # main
 210 while getopts ":D:d:i:-: " o; do
 211     case "${o}" in
 212         i)
 213             DEFAULT_IP="${OPTARG}"
 214             ;;
 215         d)
 216             OSM_CLUSTER_WORK_DIR="${OPTARG}"
 217             ;;
 218         D)
 219             OSM_DEVOPS="${OPTARG}"
 220             ;;
 221         -)
 222             [ "${OPTARG}" == "debug" ] && DEBUG_INSTALL="y" && continue
 223             echo -e "Invalid option: '--$OPTARG'\n" >&2
 224             exit 1
 225             ;;
 226         :)
 227             echo "Option -$OPTARG requires an argument" >&2
 228             exit 1
 229             ;;
 230         \?)
 231             echo -e "Invalid option: '-$OPTARG'\n" >&2
 232             exit 1
 233             ;;
 234         *)
 235             exit 1
 236             ;;
 237     esac
 238 done
 239
 240 source $OSM_DEVOPS/common/logging
 241 source $OSM_DEVOPS/common/track
 242
 243 echo "DEBUG_INSTALL=$DEBUG_INSTALL"
 244 echo "DEFAULT_IP=$DEFAULT_IP"
 245 echo "OSM_DEVOPS=$OSM_DEVOPS"
 246 echo "OSM_CLUSTER_WORK_DIR=$OSM_CLUSTER_WORK_DIR"
 247
 248 install_k8s_storageclass
 249 track k8scluster k8s_storageclass_ok
 250 install_helm_metallb
 251 track k8scluster k8s_metallb_ok
 252 install_helm_certmanager
 253 track k8scluster k8s_certmanager_ok
 254 install_helm_nginx
 255 track k8scluster k8s_nginx_ok
 256 check_for_readiness
 257 track k8scluster k8s_ready_ok
 258 configure_ipaddresspool_metallb