Incredigeek

fatal: [matrix2.host.com]: UNREACHABLE! => changed=false

Posted on February 25, 2021 by admin

ansible-playbook -i inventory/hosts setup.yml --tags=setup-system-user --ask-become-pass

Looks like the above issue is that Ansible is not able to authenticate with the server. By default it looks to try and use ssh keys, but I don’t have any passwordless ssh keys set up for Ansible to use so it fails while attempting to connect. The work around it to make sure you have sshpass installed and then specify –ask-pass to the end of the command.

ansible-playbook -i inventory/hosts setup.yml --tags=setup-system-user --ask-become-pass --ask-pass

When the command runs it’ll ask you for the ssh password and then use that.

Setting up ssh keys in Linux

Posted on July 8, 2015 by admin

Generate a key with the following command. If you are trying to setup passwordless authentication, then do not enter in a password

ssh-keygen

or if you want to use DSA,

ssh-keygen -t dsa

Example:

[root@localhost ~]# ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
ef:f2:34:e5:12:ac:ab:1b:67:9f:ff:00:12:2d:cd:16 root@localhost

Upload public key to server. Note: you will need to enter in your Password so ssh-copy-id can upload the key, after that you should not need to enter in a password.

 ssh-copy-id root@remote-server

Now login to the remote server.

ssh root@remote-server