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For reasons too specific to detail here... I have tried to add two entries for a domain to the /etc/hosts file on a CentOS-7 server. In order for one piece of software to run happily, there needs to be an entry like:

192.168.1.z  otherserver

however, I actually want that domain to resolve to a different IP:

10.w.x.y     otherserver

My understanding (backed up by similar questions eg Assign multiple IPs to 1 Entry in hosts file) is that the first matching entry will be used.

So this file:

192.168.1.z  otherserver
10.w.x.y     otherserver

should lead to the domain resolving as 192.168.1.z; whereas this file:

10.w.x.y     otherserver
192.168.1.z  otherserver

should lead to it resolving as 10.w.x.y.

However, no matter what ordering I use (and however many duplicate entries I add) the domain always resolves as 192.168.1.z unless I remove that entry completely.

So is there any way to include both lines but ensure that 10.w.x.y takes precedence?

Community
  • 1
Chris Throup
  • 181

1 Answers1

6

Top to bottom. That's usually it.

You may want to also examine your /etc/nsswitch.conf

Other services may use a different method of DNS lookup. What application is this?

Also, check for caching daemons. Is nscd running?

ewwhite
  • 201,205