installers/install_microk8s_cluster.sh

   1 #!/usr/bin/env 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 set +eux
  16
  17 # MicroK8s installation
  18 sudo snap install yq
  19 sudo snap install microk8s --classic
  20 sudo usermod -a -G microk8s ubuntu
  21 newgrp microk8s
  22 sudo microk8s.status --wait-ready
  23 sudo microk8s.enable storage dns
  24 # sudo microk8s.enable storage rbac
  25 # sudo microk8s.enable storage helm
  26 # sudo microk8s.enable storage helm3
  27
  28 # Enables MetalLB
  29 PRIVATE_IP=$(hostname -I | awk '{print $1}')
  30 echo ${PRIVATE_IP}
  31 sudo microk8s.enable metallb:${PRIVATE_IP}-${PRIVATE_IP}
  32
  33 # Updates the certificate to allow connections from outside as well (i.e. to the "public" IP).
  34 #sudo microk8s.stop
  35 sudo sed -i "s/\#MOREIPS/IP.3 = ${NEW_K8S_IP}/g" /var/snap/microk8s/current/certs/csr.conf.template
  36 cat /var/snap/microk8s/current/certs/csr.conf.template
  37 #sudo microk8s.refresh-certs -i
  38 #sudo microk8s.start
  39
  40 # Retrieves and saves the credentials
  41 sudo microk8s.config | sed  "s/server: .*/server: https:\/\/${NEW_K8S_IP}:16443/g" \
  42 | tee ${HOME}/.kube/config
  43 echo
  44 echo Credentials saved at ${HOME}/.kube/config
  45 echo
  46
  47 return 0
  48