This post will show how to run commands on your atomic host from remote.
The user of fedora instance is “fedora” by default and there is no password authentication. So first we will need to create password on the atomic for user “fedora”.
For that type the following command. It will ask for new password.
Now we will need to change PasswordAuthentication to YES . Open /etc/ssh/sshd_config on atomic host and change PasswordAuthentication to YES. Now The atomic host is all set🙂.
Go to your Remote host/Control host. I am using Fedora Workstation.
Now we need to generate ssh key on our control host.
Type the following command. This will create ssh key(private and public) on your host. The default location is of public key is ~/.ssh/id_rsa.pub.
It is time to add the ssh key to the Atomic host.
Type the following command. This will add your ssh public key to .ssh/authorized_keys on atomic host.
$ ssh-copy-id username@IPofAtomicHost
Now we will create inventory and config file for Ansible.
$ mkdir test && cd test $ touch inventory $ touch ansible.cfg
Inside the inventory file add the following:
Inside the ansible.cfg file add the following:
Now let’s ping the atomic host🙂.
$ ansible atomic -i inventory -m ping
If the above returns Success we will try to run command on atomic host from our remote host🙂.
Type the following to run command on your atomic host.
$ ansible atomic -i inventory -m command -a "sudo atomic host upgrade"
NOTE: If you have you atomic instance running on Openstack make sure to add icmp to the security groups of the instance.