Not able to connect mysql in "nn01" server"

HI team,

I couldn’t able to connect the mysql on server “nn01.itversity.com”. Please find the below error message which i got when i am tried to connect the mysql.

“ERROR 2003 (HY000): Can’t connect to MySQL server on ‘nn01.itversity.com’ (113)”

There was outage, now it is resolved.