Ansible is flexible enough to support any other situations. If you need any specific parameters to customize the ssh logon for the target host, read the Ansible inventory documentation to find a specific parameter: http://docs.ansible.com/ansible/latest/intro_inventory.html

In addition, Ansible has a configuration file, ansible.cfg, on top of the kubespray directory. It defines common settings for Ansible. For example, if you are using a very long username that usually causes an Ansible error, change ansible.cfg to set control_path to solve the issue, as shown in the following code:

[ssh_connection]
control_path = %(directory)s/%%h-%%r

If you plan to set up more than 10 nodes, you may need to increase ssh simultaneous sessions. In this case, adding the forks parameter also requires you to increase the ssh timeout from 10 seconds to 30 seconds by adding the timeout parameter, as shown in the following code:

[ssh_connection]
forks = 50
timeout = 30

The following screenshot contains all of the preceding configurations in ansible.cfg:

For more details, please visit the Ansible configuration documentation at http://docs.ansible.com/ansible/latest/intro_configuration.html