cloud-config

#cloud-config


# Hostname of your CoreOS VM
hostname: mycoreos


# Stores the public key for SSH shared-key authentication, update with your SSH RSA public key
ssh_authorized_keys:
  - ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAA...


coreos:
  units:

# Creates an LVM thinpool for Docker storage, will only run if the logical volume does not exist
# Change /dev/sdb to the disk you want to use for Docker storage
    - name: create-docker-lvm-thinpool.service
      command: start
      content: |
        [Unit]
        After=lvm2-monitor.service
        Requires=lvm2-monitor.service
        ConditionPathExists=!/dev/mapper/docker-thinpool
        [Service]
        Type=oneshot
        ExecStart=/usr/sbin/pvcreate /dev/sdb
        ExecStart=/usr/sbin/vgcreate docker /dev/sdb
        ExecStart=/usr/sbin/lvcreate --wipesignatures y -n thinpool docker -l 95%VG
        ExecStart=/usr/sbin/lvcreate --wipesignatures y -n thinpoolmeta docker -l 1%VG
        ExecStart=/usr/sbin/lvconvert -y --zero n -c 512K --thinpool docker/thinpool --poolmetadata docker/thinpoolmeta
        ExecStart=/usr/sbin/lvchange --metadataprofile docker-thinpool docker/thinpool


# Adds a TCP socket for Docker so docker can be managed remotely
    - name: docker-tcp.socket
      command: start
      enable: true
      content: |
        [Unit]
        Description=Docker Socket for the API

        [Socket]
        ListenStream=2375
        BindIPv6Only=both
        Service=docker.service

        [Install]
        WantedBy=sockets.target


# Updates the systemd Docker service to use Direct LVM storage and changes the container size to 25GB
# Requires the LVM thinpool from the previous unit exists
    - name: docker.service
      drop-ins:
        - name: 10.docker_opts.conf
          content: |
            [Service]
            Environment="DOCKER_OPTS=--storage-driver=devicemapper --storage-opt=dm.thinpooldev=/dev/mapper/docker-thinpool --storage-opt=dm.use_deferred_removal=true --storage-opt=dm.basesize=25G"


# Creates a new LVM volume group for custom logical volumes, will only run if the volume group does not exist
# Change /dev/sdc to the disk you want to use for the data volume group
    - name: create-data-volume-group.service
      command: start
      content: |
        [Unit]
        Description=Create data volume group
        After=lvm2-activation.service
        Requires=lvm2-activation.service
        ConditionPathExists=/etc/check_vg.sh
        [Service]
        Type=oneshot
        ExecStart=/bin/sh /etc/check_vg.sh data /dev/sdc


# Creates a new LVM volume and file system for storing installation files, will only run if the logical volume does not exist
    - name: create-oracledata-volume.service
      command: start
      content: |
        [Unit]
        Description=Create oracledata logical volume and create an ext4 filesystem
        After=create-data-volume-group.service
        Requires=create-data-volume-group.service
        ConditionPathExists=!/dev/mapper/data-oracledata
        [Service]
        Type=oneshot
        ExecStart=/usr/sbin/lvcreate -y -n oracledata data -l 30%VG
        ExecStart=/usr/sbin/mkfs.ext4 /dev/mapper/data-oracledata


# Mounts the file system for storing installation files from previous unit
    - name: oracledata.mount
      command: start
      content: |
        [Unit]
        Description=Mount oracledata volume to /oracledata
        Requires=dev-mapper-data\x2doracledata.device
        After=dev-mapper-data\x2doracledata.device
        [Mount]
        What=/dev/mapper/data-oracledata
        Where=/oracledata
        Type=ext4


# Creates a new LVM volume and file system for using NFS files for an ASM disk group, will only run if the logical volume does not exist
    - name: create-oraclenfs-volume.service
      command: start
      content: |
        [Unit]
        Description=Create oraclenfs logical volume and create an ext4 filesystem
        After=create-data-volume-group.service
        Requires=create-data-volume-group.service
        ConditionPathExists=!/dev/mapper/data-oraclenfs
        [Service]
        Type=oneshot
        ExecStart=/usr/sbin/lvcreate -y -n oraclenfs data -l 30%VG
        ExecStart=/usr/sbin/mkfs.ext4 /dev/mapper/data-oraclenfs


# Mounts the file system for using NFS files for an ASM disk group from previous unit
    - name: oraclenfs.mount
      command: start
      content: |
        [Unit]
        Description=Mount oraclenfs volume to /oraclenfs
        Requires=dev-mapper-data\x2doraclenfs.device
        After=dev-mapper-data\x2doraclenfs.device
        [Mount]
        What=/dev/mapper/data-oraclenfs
        Where=/oraclenfs
        Type=ext4


write_files:

# Required for the volume group check
  - path: /etc/check_vg.sh
    owner: root
    content: |
      if ! $(/usr/sbin/vgs $1 >/dev/null 2>&1); then
        /usr/sbin/pvcreate $2
        /usr/sbin/vgcreate $1 $2
        /usr/sbin/vgs $1 >/dev/null 2>&1
      fi

# Required for the Docker storage LVM thinpool
  - path: /etc/lvm/profile/docker-thinpool.profile
    permissions: 0644
    owner: root
    content: |
      activation {
          thin_pool_autoextend_threshold=80
          thin_pool_autoextend_percent=20
      }


# Add bash profile preferences
  - path: /etc/profile.env
    content: |
      alias ll='ls -l --color=auto'