Let’s say that you have a cluster of 6 nodes and you do not have a DNS server. How do you map the IPs to their perspective hostnames properly so that every node in the cluster can detect the other node’s hostname? We need to bypass the automatic lookup. I have 6 nodes with the following IPs and hostnames. 128.197.115.158 buhpc1 128.197.115.7 buhpc2 128.197.115.176 buhpc3 128.197.115.17 buhpc4 128.197.115.9 buhpc5 128.197.115.15 buhpc6 Now, we edit every node’s /etc/hosts file. For all...

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