Notes when coreos install.

cloud-config.yaml

#cloud-config

hostname: coreos1

ssh_authorized_keys:
  - ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQClVm7p5ckjmscB4gfJrI9O9Pa7Wo/7VEVkkgACZut7xBDK7dpD2wsavCUe9s2Ll4jFDc4UjsvypgPYhAGu3k9tGb8v7ysPHC2ZMh1zCdqrvuNMl+w3EnoEJW9iY5/NgCT807TqW890CUww3rHAYyyB0msmN62UgHdELFQHWAa7wNcQeTPUG0r8FaxwTYiMAtKoHz9YQMQJdDrTd6UmOSBWx0SEyBk0RL5v9kWzz4hIsQV80psDcDoSxrj37fSkG3oZDu7sG2owjAaxG5bKgQ3g9e953LnGEiI8ywHVeerL/A1cZTWcoM91aqyiT3goLF7dQFzXzL3iw3OQN/BL3ExN

write_files:
  - path: /etc/ssh/sshd_config
    permissions: 0600
    owner: root:root
    content: |
      # Use most defaults for sshd configuration.
      UsePrivilegeSeparation sandbox
      Subsystem sftp internal-sftp
      ClientAliveInterval 180

      PermitRootLogin no
      MaxAuthTries 5
      PasswordAuthentication no
      ChallengeResponseAuthentication no
      AllowUsers core

  - path: /etc/systemd/logind.conf
    permissions: 644
    owner: root:root
    content: |
      [Login]
      #NAutoVTs=6
      #ReserveVT=6
      #KillUserProcesses=no
      #KillOnlyUsers=
      #KillExcludeUsers=root
      #InhibitDelayMaxSec=5
      #HandleLidSwitchDocked=ignore
      #PowerKeyIgnoreInhibited=no
      #SuspendKeyIgnoreInhibited=no
      #HibernateKeyIgnoreInhibited=no
      #LidSwitchIgnoreInhibited=yes
      #HoldoffTimeoutSec=30s
      #IdleAction=ignore
      #IdleActionSec=30min
      #RuntimeDirectorySize=10%
      #RemoveIPC=yes
      #InhibitorsMax=8192
      #SessionsMax=8192
      #UserTasksMax=33%
      HandleSuspendKey=ignore
      HandleHibernateKey=ignore
      HandleLidSwitch=ignore
      HandlePowerKey=ignore

coreos:
  units:
    - name: 10-static0.network
      content: |
        [Match]
        MACAddress=dc:0e:a1:da:e8:5e
        [Network]
        Address=192.168.0.10/24
        Gateway=192.168.0.1
        DNS=192.168.0.1

install.txt

# install
vim ~/cloud-config.yaml
sudo coreos-install -d /dev/sda -C beta -c ~/cloud-config.yaml
sudo reboot

# update
sudo vim /var/lib/coreos-install/user_data
sudo reboot