setup-1node-k8s.sh

   1 #!/bin/bash
   2
   3 ################################################################################
   4 #   Copyright (c) 2019 AT&T Intellectual Property.                             #
   5 #   Copyright (c) 2019 Nokia.                                                  #
   6 #                                                                              #
   7 #   Licensed under the Apache License, Version 2.0 (the "License");            #
   8 #   you may not use this file except in compliance with the License.           #
   9 #   You may obtain a copy of the License at                                    #
  10 #                                                                              #
  11 #       http://www.apache.org/licenses/LICENSE-2.0                             #
  12 #                                                                              #
  13 #   Unless required by applicable law or agreed to in writing, software        #
  14 #   distributed under the License is distributed on an "AS IS" BASIS,          #
  15 #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
  16 #   See the License for the specific language governing permissions and        #
  17 #   limitations under the License.                                             #
  18 ################################################################################
  19
  20 # The intention for this script is to stand up a dev testing k8s environment
  21 # that is ready for RIC installation for individual developer/team's API and functional
  22 # testing needs.
  23 # The integration team will maintain the synchronization of software infrastructure
  24 # stack (software, versions and configurations) between this iscript and what is
  25 # provided for the E2E validation testing.  Due to resource and other differences, this
  26 # environment is not intended for any testing related to performance, resilience,
  27 # robustness, etc.
  28
  29 # This script installs docker host, a one-node k8s cluster, and Helm for CoDev.
  30 # This script assumes that it will be executed on an Ubuntu 16.04 VM.
  31 # It is best to be run as the cloud-init script at the VM launch time, or from a
  32 # "sudo -i" shell post-launch on a newly launched VM.
  33 #
  34
  35 set -x
  36
  37 # for RIC R0 we keep 1.13
  38 export KUBEV="1.13.3"
  39 export KUBECNIV="0.6.0"
  40 export DOCKERV="18.06.1"
  41
  42 # for new 1.14 release
  43 #export KUBEVERSION="1.14.0"
  44 #export KUBECNIVERSION="0.7.0"
  45 #export DOCKEFV="18.06.1"
  46
  47 export HELMV="2.12.3"
  48
  49 unset FIRSTBOOT
  50 unset DORESET
  51
  52 while getopts ":r" opt; do
  53   case ${opt} in
  54     r )
  55       DORESET='YES'
  56       ;;
  57     \? )
  58       echo "Usage: $0 [-r]"
  59       exit
  60       ;;
  61   esac
  62 done
  63
  64
  65 if [ ! -e /var/tmp/firstboot4setupk8s ]; then
  66   echo "First time"
  67   FIRSTBOOT='YES'
  68   touch /var/tmp/firstboot4setupk8s
  69
  70   modprobe -- ip_vs
  71   modprobe -- ip_vs_rr
  72   modprobe -- ip_vs_wrr
  73   modprobe -- ip_vs_sh
  74   modprobe -- nf_conntrack_ipv4
  75
  76   # disable swap
  77   SWAPFILES=$(grep swap /etc/fstab | sed '/^#/ d' |cut -f1 -d' ')
  78   if [ ! -z $SWAPFILES ]; then
  79     for SWAPFILE in $SWAPFILES
  80     do
  81       echo "disabling swap file $SWAPFILE"
  82       if [[ $SWAPFILE == UUID* ]]; then
  83         UUID=$(echo $SWAPFILE | cut -f2 -d'=')
  84         swapoff -U $UUID
  85       else
  86         swapoff $SWAPFILE
  87       fi
  88       # edit /etc/fstab file, remove line with /swapfile
  89       sed -i -e "/$SWAPFILE/d" /etc/fstab
  90     done
  91   fi
  92   # disable swap
  93   #swapoff /swapfile
  94   # edit /etc/fstab file, remove line with /swapfile
  95   #sed -i -e '/swapfile/d' /etc/fstab
  96
  97
  98   # add rancodev CI tool hostnames
  99   echo "${__RUNRICENV_GERRIT_IP__} ${__RUNRICENV_GERRIT_HOST__}" >> /etc/hosts
 100   echo "${__RUNRICENV_DOCKER_IP__} ${__RUNRICENV_DOCKER_HOST__}" >> /etc/hosts
 101   echo "${__RUNRICENV_HELMREPO_IP__} ${__RUNRICENV_HELMREPO_HOST__}" >> /etc/hosts
 102
 103
 104   # create kubenetes config file
 105   if [[ ${KUBEV} == 1.13.* ]]; then
 106     cat <<EOF >/root/config.yaml
 107 apiVersion: kubeadm.k8s.io/v1alpha3
 108 kubernetesVersion: v${KUBEV}
 109 kind: ClusterConfiguration
 110 apiServerExtraArgs:
 111   feature-gates: SCTPSupport=true
 112 networking:
 113   dnsDomain: cluster.local
 114   podSubnet: 10.244.0.0/16
 115   serviceSubnet: 10.96.0.0/12
 116
 117 ---
 118 apiVersion: kubeproxy.config.k8s.io/v1alpha1
 119 kind: KubeProxyConfiguration
 120 mode: ipvs
 121 EOF
 122   elif [[ ${KUBEV} == 1.14.* ]]; then
 123     cat <<EOF >/root/config.yaml
 124 apiVersion: kubeadm.k8s.io/v1beta1
 125 kubernetesVersion: v${KUBEV}
 126 kind: ClusterConfiguration
 127 apiServerExtraArgs:
 128   feature-gates: SCTPSupport=true
 129 networking:
 130   dnsDomain: cluster.local
 131   podSubnet: 10.244.0.0/16
 132   serviceSubnet: 10.96.0.0/12
 133
 134 ---
 135 apiVersion: kubeproxy.config.k8s.io/v1alpha1
 136 kind: KubeProxyConfiguration
 137 mode: ipvs
 138 EOF
 139   else
 140     echo "Unsupported Kubernetes version requested.  Bail."
 141     exit
 142   fi
 143
 144
 145   # create a RBAC file for helm (tiller)
 146   cat <<EOF > /root/rbac-config.yaml
 147 apiVersion: v1
 148 kind: ServiceAccount
 149 metadata:
 150   name: tiller
 151   namespace: kube-system
 152 ---
 153 apiVersion: rbac.authorization.k8s.io/v1
 154 kind: ClusterRoleBinding
 155 metadata:
 156   name: tiller
 157 roleRef:
 158   apiGroup: rbac.authorization.k8s.io
 159   kind: ClusterRole
 160   name: cluster-admin
 161 subjects:
 162   - kind: ServiceAccount
 163     name: tiller
 164     namespace: kube-system
 165 EOF
 166
 167
 168   KUBEVERSION="${KUBEV}-00"
 169   CNIVERSION="${KUBECNIV}-00"
 170   DOCKERVERSION="${DOCKERV}-0ubuntu1.2~16.04.1"
 171   curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
 172   echo 'deb http://apt.kubernetes.io/ kubernetes-xenial main' > /etc/apt/sources.list.d/kubernetes.list
 173
 174   # install low latency kernel, docker.io, and kubernetes
 175   apt-get update
 176   apt-get install -y linux-image-4.15.0-45-lowlatency docker.io=${DOCKERVERSION}
 177   apt-get install -y kubernetes-cni=${CNIVERSION}
 178   apt-get install -y --allow-unauthenticated kubeadm=${KUBEVERSION} kubelet=${KUBEVERSION} kubectl=${KUBEVERSION}
 179   apt-mark hold kubernetes-cni kubelet kubeadm kubectl
 180
 181   # install Helm
 182   HELMVERSION=${HELMV}
 183   cd /root
 184   mkdir Helm
 185   cd Helm
 186   wget https://storage.googleapis.com/kubernetes-helm/helm-v${HELMVERSION}-linux-amd64.tar.gz
 187   tar -xvf helm-v${HELMVERSION}-linux-amd64.tar.gz
 188   mv linux-amd64/helm /usr/local/bin/helm
 189
 190
 191   # add cert for accessing docker registry in Azure
 192   mkdir -p /etc/docker/certs.d/${__RUNRICENV_DOCKER_HOST__}:${__RUNRICENV_DOCKER_PORT__}
 193   cat <<EOF >/etc/docker/ca.crt
 194 -----BEGIN CERTIFICATE-----
 195 MIIEPjCCAyagAwIBAgIJAIwtTKgVAnvrMA0GCSqGSIb3DQEBCwUAMIGzMQswCQYD
 196 VQQGEwJVUzELMAkGA1UECAwCTkoxEzARBgNVBAcMCkJlZG1pbnN0ZXIxDTALBgNV
 197 BAoMBEFUJlQxETAPBgNVBAsMCFJlc2VhcmNoMTswOQYDVQQDDDIqLmRvY2tlci5y
 198 YW5jby1kZXYtdG9vbHMuZWFzdHVzLmNsb3VkYXBwLmF6dXJlLmNvbTEjMCEGCSqG
 199 SIb3DQEJARYUcmljQHJlc2VhcmNoLmF0dC5jb20wHhcNMTkwMTI0MjA0MzIzWhcN
 200 MjQwMTIzMjA0MzIzWjCBszELMAkGA1UEBhMCVVMxCzAJBgNVBAgMAk5KMRMwEQYD
 201 VQQHDApCZWRtaW5zdGVyMQ0wCwYDVQQKDARBVCZUMREwDwYDVQQLDAhSZXNlYXJj
 202 aDE7MDkGA1UEAwwyKi5kb2NrZXIucmFuY28tZGV2LXRvb2xzLmVhc3R1cy5jbG91
 203 ZGFwcC5henVyZS5jb20xIzAhBgkqhkiG9w0BCQEWFHJpY0ByZXNlYXJjaC5hdHQu
 204 Y29tMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuAW1O52l9/1L+D7x
 205 Qv+782FjiELP9MWO0RCAL2JzV6Ioeo1IvuZl8jvXQVGlowanCdz1HZlMJjGm6Ybv
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 211 VR0jBBgwFoAUm9NbNhZ3Zp1f50DIN4/4fvWQSNswDwYDVR0TAQH/BAUwAwEB/zAN
 212 BgkqhkiG9w0BAQsFAAOCAQEAkbuqbuMACRmzMXFKoSsMTLk/VRQDlKeubdP4lD2t
 213 Z+2dbhfbfiae9oMly7hPCDacoY0cmlBb2zZ8lgA7kVvuw0xwX8mLGYfOaNG9ENe5
 214 XxFP8MuaCySy1+v5CsNnh/WM3Oznc6MTv/0Nor2DeY0XHQtM5LWrqyKGZaVAKpMW
 215 5nHG8EPIZAOk8vj/ycg3ca3Wv3ne9/8rbrrxDJ3p4L70DOtz/JcQai10Spct4S0Z
 216 7yd4tQL+QSQCvmN7Qm9+i52bY0swYrUAhbNiEX3yJDryKjSCPirePcieGZmBRMxr
 217 7j28jxpa4g32TbWR/ZdxMYEkCVTFViTE23kZdNvahHKfdQ==
 218 -----END CERTIFICATE-----
 219 EOF
 220   cp /etc/docker/ca.crt /etc/docker/certs.d/${__RUNRICENV_DOCKER_HOST__}:${__RUNRICENV_DOCKER_PORT__}/ca.crt
 221   service docker restart
 222   systemctl enable docker.service
 223   docker login -u ${__RUNRICENV_DOCKER_USER__} -p ${__RUNRICENV_DOCKER_PASS__} ${__RUNRICENV_DOCKER_HOST__}:${__RUNRICENV_DOCKER_PORT__}
 224   docker pull ${__RUNRICENV_DOCKER_HOST__}:${__RUNRICENV_DOCKER_PORT__}/whoami:0.0.1
 225
 226
 227   # test access to k8s docker registry
 228   kubeadm config images pull
 229 else
 230   echo "Not first boot"
 231
 232   kubectl get pods --all-namespaces
 233 fi
 234
 235
 236 if [ -n "$DORESET" ]; then
 237   kubeadm reset
 238 fi
 239
 240 if [ -n ${DORESET+set} ] || [ -n ${FIRSTBOOT+set} ]; then
 241   # start cluster (make sure CIDR is enabled with the flag)
 242   kubeadm init --config /root/config.yaml
 243
 244   # set up kubectl credential and config
 245   cd /root
 246   rm -rf .kube
 247   mkdir -p .kube
 248   cp -i /etc/kubernetes/admin.conf /root/.kube/config
 249   chown root:root /root/.kube/config
 250
 251   # at this point we should be able to use kubectl
 252   kubectl get pods --all-namespaces
 253   # you will see the DNS pods stuck in pending state.  They are waiting for some networking to be installed.
 254
 255   # install flannel
 256   # kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
 257   kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/bc79dd1505b0c8681ece4de4c0d86c5cd2643275/Documentation/kube-flannel.yml
 258
 259   # waiting for all kube-system pods to be in running state
 260   NUMPODS=0
 261   while [  $NUMPODS -lt 8 ]; do
 262     sleep 5
 263     OUTPUT=$(kubectl get pods --all-namespaces |grep Running)
 264     NUMPODS=$(echo "$OUTPUT" | wc -l)
 265     echo "Waiting for $NUMPODS / 8 kube-system pods reaching Running state"
 266   done
 267
 268   # if running a single node cluster, need to enable master node to run pods
 269   kubectl taint nodes --all node-role.kubernetes.io/master-
 270
 271   cd /root
 272   # install RBAC for Helm
 273   kubectl create -f rbac-config.yaml
 274
 275   rm -rf .helm
 276   helm init --service-account tiller
 277
 278
 279   cat <<EOF >/etc/ca-certificates/update.d/helm.crt
 280 -----BEGIN CERTIFICATE-----
 281 MIIESjCCAzKgAwIBAgIJAIU+AfULkw0PMA0GCSqGSIb3DQEBCwUAMIG5MQswCQYD
 282 VQQGEwJVUzETMBEGA1UECAwKTmV3IEplcnNleTETMBEGA1UEBwwKQmVkbWluc3Rl
 283 cjENMAsGA1UECgwEQVQmVDERMA8GA1UECwwIUmVzZWFyY2gxOTA3BgNVBAMMMCou
 284 aGVsbS5yYW5jby1kZXYtdG9vbHMuZWFzdHVzLmNsb3VkYXBwLmF6dXJlLmNvbTEj
 285 MCEGCSqGSIb3DQEJARYUcmljQHJlc2VhcmNoLmF0dC5jb20wHhcNMTkwMzIxMTU1
 286 MzAwWhcNMjEwMzIwMTU1MzAwWjCBuTELMAkGA1UEBhMCVVMxEzARBgNVBAgMCk5l
 287 dyBKZXJzZXkxEzARBgNVBAcMCkJlZG1pbnN0ZXIxDTALBgNVBAoMBEFUJlQxETAP
 288 BgNVBAsMCFJlc2VhcmNoMTkwNwYDVQQDDDAqLmhlbG0ucmFuY28tZGV2LXRvb2xz
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 297 pu9PPhL7f9IwHwYDVR0jBBgwFoAUYTpoVXZPXSR/rhjrpu9PPhL7f9IwDwYDVR0T
 298 AQH/BAUwAwEB/zANBgkqhkiG9w0BAQsFAAOCAQEAUDLbiKVIW6W9qFXLtoyO7S2e
 299 IOUSZ1F70pkfeYUqegsfFZ9njPtPqTzDfJVxYqH2V0vxxoAxXCYCpNyR6vYlYiEL
 300 R+oyxuvauW/yCoiwKBPYa4fD/PBajJnEO1EfIwZvjFLIfw4GjaX59+zDS3Zl0jT/
 301 w3uhPSsJAYXtDKLZ14btA27cM5mW4kmxVD8CRdUW0jr/cN3Hqe9uLSNWCNiDwma7
 302 RnpK7NnOgXHyhZD/nVC0nY7OzbK7VHFJatSOjyuMxgWsFGahwYNxf3AWfPwUai0K
 303 ne/fVFGZ6ifR9QdD0SuKIAEuqSyyP4BsQ92uEweU/gWKsnM6iNVmNFX8UOuU9A==
 304 -----END CERTIFICATE-----
 305 EOF
 306
 307   # waiting for tiller pod to be in running state
 308   NUMPODS=0
 309   while [ $NUMPODS -lt 1 ]; do
 310     sleep 5
 311     OUTPUT=$(kubectl get pods --all-namespaces |grep Running)
 312     NUMPODS=$(echo "$OUTPUT" | grep "tiller-deploy" | wc -l)
 313     echo "Waiting for $NUMPODS / 1 tiller-deploy pod reaching Running state"
 314   done
 315
 316   echo "All up"
 317
 318   #reboot
 319 fi