~/.ssh/config vs etc/hosts?

ssh linux

Solution 1:

No, actually quite the opposite.

Currently (HostName 101.281.182.816) when you run ssh 101.281.182.816, it finds the entry in your config and knows that it should connect to the IP 101.281.182.816. There's no name resolution going on.

After the change you're proposing (HostName myserver) when ssh 101.281.182.816 is executed it will find out that the name "101.281.182.816" corresponds to hostname myserver and that hostname has to be resolved. /etc/hosts has the priority when resolving names, so it will be resolved to the IP 101.281.182.816 using the entry in /etc/hosts. If that entry was not present there, your DNS server would be used.

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