{{tag>[coreos docker]}}

=====CoreOS install using ISO=====
====Install and run CoreOS====
  * Boot from ISO
  * Configure ssh key for 'core' user. Paste your own SSH pub. key into a YAML config file, additionally configure hostname and other users. See [[https://coreos.com/docs/cluster-management/setup/cloudinit-cloud-config/]] for all options.<code>$ sudo su -
# vi config

#cloud-config
hostname: coreos1

ssh_authorized_keys:
  - ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC0g+ZTxC7weoIJLUafOgrm+h...
</code>
  * Install CoreOS. <code>coreos-install -d /dev/sda -c ~/config</code>
  * Log in with the core use (using the dhcp requested IP-address).
  * Configure static networking. <code>cd /etc/systemd/network/
vi static.network

[Match]
Name=ens3

[Network]
Address=192.168.0.15/24
Gateway=192.168.0.1
DNS=1.2.3.4
DNS=2.3.4.5
</code>
  * Apply config. <code>sudo systemctl restart systemd-networkd</code>
  * Add users via cloud-config. <code>#cloud-config

users:
  - name: elroy
    passwd: $6$5s2u6/jR$un0AvWnqilcgaNB3Mkxd5yYv6mTlWfOoCYHZmfi3LDKVltj.E8XNKEcwWm...
    groups:
      - sudo
      - docker
    ssh-authorized-keys:
      - ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC0g+ZTxC7weoIJLUafOgrm+h...</code>
====Change update strategy====
<code>
#cloud-config
coreos:
  update:
    reboot-strategy: reboot


</code>