I think I've found the source of this error because my server name is too long and the service agent hasn't captured it completely. After I changed /ect/homename then shutdown -r now, my agent log has changed.
I don't know if adding {IP} {servername} to /ect/hosts will work, but I did, and after changing the servername and restarting the hosts, my agent is ready to use.
If there is anything unclear, you can contact me at gzj950421@163.com
My English is not very good, so I am not active in the forum, I see that you are a helpful person, I hope I can impart my experience to you, so that you can help with many people, you are a good man
thanks,well,Wish you happy