This sounds like a problem best solved by DNS. Add this to your
If a DNS lookup contains no dots1 or returns an NXDOMAIN >response then another DNS lookup will be made with that search value >appended.
If you do
ssh srv1, the DNS lookup will be made for
If you do
ssh srv1.dc1, the DNS lookup will be for
srv1.dc1 which will return NXDOMAIN. The automatic followup DNS lookup will be for
You can add multiple search domains to that line separated by whitespace and they will be tried in the order listed until one of them returns an A record2.
1.) This value is configurable and refers to the number of dots the short name must have fewer than. The default value is 1 and it should be set higher than 1 for sites where the hosts are of the form
srv1.dc1.domain.com. This avoids the useless request to the root servers for the
dc1 top level domain.
2.) Or an AAAA record.
Updated answer 25th Nov 2020:
Although the outdated answer above is still a fully valid one, nowadays, I would rather suggest using the
ssh_config built-in mechanism
That would mean, instead of changing
/etc/resolv.conf or DNS records, you can simply add the following lines to the top of your
Please refer to the official ssh_config documentation for details around these configuration statements.