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?
Best Answer
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?