Troubleshooting Ansible errors

List of errors seen while working on Ansible and their solutions.

Error

"msg": "Failed to connect to the host via ssh: ssh: connect to host 172.17.0.9 port 22: No route to host",

Cause and solution

Ansible control machine is not able to reach the client. Make sure client hostname is resolved via –

• DNS server or
• /etc/hosts of Ansible control server or
• By /etc/ansible/hosts or your custom Ansible inventory file.

Also, network connectivity over port 22 from Ansible control machine to the client is working fine (test using telnet)

Error

"msg": "Failed to connect to the host via ssh: Permission denied (publickey,password).",

Cause and solution

Ansible control server is failed to authenticate the connection to the client.

• Make sure you are using proper Ansible user for which password-less SSH is configured.
• Test passwordless SSH to client from normal shell prompt and make sure its working fine.