cloud init to install docker on ubuntu

cattle.yaml

#cloud-config

package_update: true
package_upgrade: true
package_reboot_if_required: true

disable_root: 1
ssh_pwauth:   0

manage-resolv-conf: true
resolv_conf:
  nameservers:
    - '1.1.1.1'
    - '8.8.8.8'

write_files:
- path: /etc/sysctl.d/20-k8s-sysctl.conf
  content: |
    kernel.dmesg_restrict=1
    kernel.pid_max=65535
    fs.file-max=512000
    vm.max_map_count=262144
    vm.swappiness=0
    net.ipv4.tcp_slow_start_after_idle=0
    net.ipv4.tcp_mtu_probling=1
    net.ipv4.tcp_congestion_control=bbr
    net.core.default_qdisc=fq
- path: /entrypoint.sh
  content: |
    #!/bin/bash
    set -euo pipefail
    
    LABEL_PREFIX="_replace_"
    TOKEN="_replace_"
    CA_CHECKSUM="_replace_"
    SERVER="_replace_"
    
    eaddress="eth0"
    iaddress="ens10"
    
    hostname="$(hostname)"
    
    declare -a roles
    declare -a labels
    labels+=("${LABEL_PREFIX}/cloud=hetzner")
    
    declare -A match
    match=([e]=etcd [c]=controlplane [w]=worker)
    for (( i=0; i<${#hostname}; i++ )); do
      role="${match[${hostname:$i:1}]-}"
      [ -n "${role}" ] || break
      roles+=("${role}")
      labels+=("${LABEL_PREFIX}/${role}=true")
    done
    
    eaddress="$(ip addr show "${eaddress}" | sed -E -ne 's/.*inet ([0-9.]+).*/\1/p' | head -n+1)"
    iaddress="$(ip addr show "${iaddress}" | sed -E -ne 's/.*inet ([0-9.]+).*/\1/p' | head -n+1)"
    
    docker run -d \
      --privileged \
      --restart=unless-stopped \
      --net=host \
      -v /etc/kubernetes:/etc/kubernetes \
      -v /var/run:/var/run rancher/rancher-agent:v2.4.2 \
      --server "${SERVER}" \
      --token "${TOKEN}" \
      --ca-checksum "${CA_CHECKSUM}" \
      --address "${eaddress}" \
      --internal-address "${iaddress}" \
      ${roles[@]/#/--} \
      ${labels[@]/#/--label }

users:
- name: user
  lock_passwd: true
  shell: /bin/bash
  ssh-authorized-keys:
    - "ssh-rsa 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"
  groups:
    - ubuntu
    - docker
  sudo:
    - ALL=(ALL) NOPASSWD:ALL

packages:
  - apt-transport-https
  - ca-certificates
  - curl
  - software-properties-common
  - htop
  - rsync

runcmd:
  - /sbin/sysctl --system
  - curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
  - add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
  - apt-get update -y
  - apt-get install -y docker-ce docker-ce-cli containerd.io
  - systemctl start docker
  - systemctl enable docker
  - bash /entrypoint.sh

final_message: "The system is finally up, after $UPTIME seconds"

rancher.yaml

#cloud-config

package_update: true
package_upgrade: true
package_reboot_if_required: true

disable_root: 1
ssh_pwauth:   0

manage-resolv-conf: true
resolv_conf:
  nameservers:
    - '1.1.1.1'
    - '8.8.8.8'

write_files:
- path: /etc/network/interfaces.d/60-floating-ip.cfg
  content: |
    # set static ip
    auto eth0:1
    iface eth0:1 inet static
        address 78.47.156.8
        netmask 32

users:
- name: user
  lock_passwd: true
  shell: /bin/bash
  ssh-authorized-keys:
    - "ssh-rsa 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"
  groups:
    - ubuntu
    - docker
  sudo:
    - ALL=(ALL) NOPASSWD:ALL

packages:
  - apt-transport-https
  - ca-certificates
  - curl
  - gnupg-agent
  - software-properties-common
  - git
  - gnupg2
  - htop
  - rsync
  - build-essential
  - vim

runcmd:
  - curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
  - add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
  - curl -sL https://deb.nodesource.com/setup_13.x | sudo -E bash -
  - curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
  - echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
  - apt-get update -y
  - apt-get install -y docker-ce docker-ce-cli containerd.io nodejs yarn
  - curl -L https://github.com/docker/compose/releases/download/$(curl -s https://api.github.com/repos/docker/compose/releases/latest | grep "tag_name" | cut -d \" -f4)/docker-compose-$(uname -s)-$(uname -m) -o /usr/local/bin/docker-compose
  - chmod 755 /usr/local/bin/docker-compose
  - systemctl start docker
  - systemctl enable docker
  - systemctl restart networking

final_message: "The system is finally up, after $UPTIME seconds"