• Symptom:

    Many services in ZStack require the SSH connection, including host, storage, and creating HA for a management node. As the user networks may be faulty, performing the preceding operations will prompt you for the timeout error because of the SSH connection timeout.

  • Cause:

    It is primarily because you perform the DNS authentication for the IP address, and then the timeout appears.

  • Solution:

    Take creating HA for a management node as an example.

    To solve this problem
    1. Modify the configurations on the /etc/ssh/sshd_config file of the SSH server as follows:
      UseDNS no
#GSSAPI options
GSSAPIAuthentication no
    2. Run /etc/init.d/sshd restart to restart the sshd service.