plugins/integrations/kubernetes-service/src/main/resources/conf/etcd-node.yml

#cloud-config
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# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
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# specific language governing permissions and limitations
# under the License.

---
users:
  - name: cloud
    sudo: ALL=(ALL) NOPASSWD:ALL
    shell: /bin/bash
    ssh_authorized_keys:
      {{ k8s.ssh.pub.key }}

write_files:
  - path: /opt/bin/setup-etcd-node
    permissions: '0700'
    owner: root:root
    content: |
      #!/bin/bash -e

      if [[ -f "/home/cloud/success" ]]; then
        echo "Already provisioned!"
        exit 0
      fi

      ISO_MOUNT_DIR=/mnt/etcddisk
      BINARIES_DIR=${ISO_MOUNT_DIR}/
      ATTEMPT_ONLINE_INSTALL=false
      setup_complete=false

      OFFLINE_INSTALL_ATTEMPT_SLEEP={{ k8s.install.wait.time }}
      MAX_OFFLINE_INSTALL_ATTEMPTS={{ k8s.install.reattempts.count }}
      if [[ -z $OFFLINE_INSTALL_ATTEMPT_SLEEP || $OFFLINE_INSTALL_ATTEMPT_SLEEP -eq 0 ]]; then
        OFFLINE_INSTALL_ATTEMPT_SLEEP=15
      fi
      if [[ -z $MAX_OFFLINE_INSTALL_ATTEMPTS || $MAX_OFFLINE_INSTALL_ATTEMPTS -eq 0 ]]; then
        MAX_OFFLINE_INSTALL_ATTEMPTS=100
      fi
      offline_attempts=1
      MAX_SETUP_CRUCIAL_CMD_ATTEMPTS=3
      EJECT_ISO_FROM_OS={{ k8s.eject.iso }}
      crucial_cmd_attempts=1
      iso_drive_path=""
      while true; do
        if (( "$offline_attempts" > "$MAX_OFFLINE_INSTALL_ATTEMPTS" )); then
          echo "Warning: Offline install timed out!"
          break
        fi
        set +e
        output=`blkid -o device -t TYPE=iso9660`
        set -e
        if [ "$output" != "" ]; then
          while read -r line; do
            if [ ! -d "${ISO_MOUNT_DIR}" ]; then
              mkdir "${ISO_MOUNT_DIR}"
            fi
            retval=0
            set +e
            mount -o ro "${line}" "${ISO_MOUNT_DIR}"
            retval=$?
            set -e
            if [ $retval -eq 0 ]; then
              if [ -d "$BINARIES_DIR" ]; then
                iso_drive_path="${line}"
                break
              else
                umount "${line}" && rmdir "${ISO_MOUNT_DIR}"
              fi
            fi
          done <<< "$output"
        fi
        if [ -d "$BINARIES_DIR" ]; then
          break
        fi
        echo "Waiting for Binaries directory $BINARIES_DIR to be available, sleeping for $OFFLINE_INSTALL_ATTEMPT_SLEEP seconds, attempt: $offline_attempts"
        sleep $OFFLINE_INSTALL_ATTEMPT_SLEEP
        offline_attempts=$[$offline_attempts + 1]
      done

      if [[ "$PATH" != *:/opt/bin && "$PATH" != *:/opt/bin:* ]]; then
        export PATH=$PATH:/opt/bin
      fi

      if [ -d "$BINARIES_DIR" ]; then
        ### Binaries available offline ###
        echo "Installing binaries from ${BINARIES_DIR}"
        mkdir -p /opt/bin/
        tar -zxf ${BINARIES_DIR}/etcd/etcd-linux-amd64.tar.gz -C /opt/bin/
        mv /opt/bin/etcd*/etcd* /opt/bin/
        sudo rm -rf /opt/bin/etcd-*
      fi

  - path: /etc/systemd/system/etcd.service
    permissions: '0755'
    owner: root:root
    content: |
      [Unit]
      Description=etcd

      [Service]
      Type=exec
      ExecStart=/opt/bin/etcd \
        --name {{ etcd.node_name }} \
        --initial-advertise-peer-urls http://{{ etcd.node_ip }}:2380 \
        --listen-peer-urls http://{{ etcd.node_ip }}:2380 \
        --advertise-client-urls http://{{ etcd.node_ip }}:2379 \
        --listen-client-urls http://{{ etcd.node_ip }}:2379,http://127.0.0.1:2379 \
        --initial-cluster-token etcd-cluster-1 \
        --initial-cluster {{ etcd.initial_cluster_nodes }} \
        --initial-cluster-state new
      Restart=on-failure
      RestartSec=5

      [Install]
      WantedBy=multi-user.target

runcmd:
  - chown -R cloud:cloud /home/cloud/.ssh
  - /opt/bin/setup-etcd-node
  - systemctl daemon-reload
  - systemctl enable --now etcd