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I can ping my servers via the FQDN. but not via the short hostname.

Posted July 18, 2016 6k views
DNS

I can ping my servers via the FQDN. but not via the short hostname. Example: I can ping ,machine02.domain_name.net, but I can’t pimg machine02.’ I am running Centos 7.

I have DSN A type entries for machine.domain_name.net.

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daverieck
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daverieck
edited by AHA

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1 answer
MDS July 19, 2016

Add the following line to your hosts file /etc/hosts

127.0.1.1 machine02.domain_name.net machine02.domain_name.net

And in your /etc/hostname file, change the hostname to 

machine02.domain_name.net

You also need to have an A record for machine02.domain_name.net pointing to the server IP address.

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  • daverieck July 19, 2016

    Thanks for the reply. That helped a ton and I change my /etc/hosts as follows (on machine 2):
    127.0.0.1 localhost machine02.daverieck.net
    198.211.102.213 machine01.daverieck.net machine01
    198.199.70.175 machine02.daverieck.net machine02

    (on machine 1)
    127.0.0.1 localhost machine01.daverieck.net
    198.211.102.213 machine01.daverieck.net machine01
    198.199.70.175 machine02.daverieck.net machine02

    They now can each ping each other via <ping machine0x)

    I am new to this and am not sure if this is the best way if you have hundreds of servers talking to each other, I am setting this up to allow Puppet to manage agents. Machine 1 will be the master and machine 2 will be the slave. As I add more slave servers, does anyone know if this is the best solution or is there another way via DNS management ?

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