Solution to slow ssh connection in CentOS

Solution to slow ssh connection in CentOS

Use commands

Ssh-vroot@10.10.90.204

To view the ssh debugging information, take the following steps:

Debug1: Next authentication method: gssapi-with-mic
Debug1: An invalid name was supplied
Cannot determine realm for numeric host address

Solution:

1. Add the ip address and host name of the target machine to/etc/hosts of the local machine, for example:

10.10.90.204 node4

2. Modify/etc/ssh/ssh_config, and change GSSAPIAuthentication yes to GSSAPIAuthentication no.