I have a cluster with 1 login node and 100 computation nodes.
I can ping the external networks including google.com from the login node. However, I cannot from the computation nodes.
The computation nodes are all reachable (ping) from each other. They can also ping the login node. (and vice versa)
Where should I check first? (I am using CentOS 7)
The below is some info of my network status