/etc/resolv.conf, /etc/netsvc.conf

[ogniemi]

The DNS resolving is not needed so I switched it off removing /etc/resolv.conf

In /etc/netsvc.conf just left hosts=files

Eveything looks fine, but one error in syslog is logged every 5 minutes:

Jan 23 10:57:25 test045 user:err|error syslog: dlopen of user option: files failed: 0509-022 Cannot load module /usr/lib/netsvc/dynload/files.so. 0509-026 System error: A file or directory in the path name does not exist.

When I remove /etc/netsvc.conf the error no more appears.


Q: I it safe to remove /etc/netsvc.conf in my case when DNS is not used and resolv.conf is removed?


thx in advance!

 

[ogniemi]

I found - there was a mistake in netsvc.conf

should be:

hosts = local

 

[Chapter11]

Just a point of note, I wouldn't remove resolv.conf completely, but leave a functionally empty file with the commented-out line "this is empty for this reason: " and the reason.

That way whoever comes in behind you can see that there is a reason for that file to have nothing in it, instead of seeing "oh, no resolv.conf, let's get that problem fixed" because most of the time, having one is desirable.

 

[KenCunningham]

But Chapter11, where's the fun in that ;-)

I want to be good, is that not enough?

 

[ogniemi]

the problem is that when I left it commented (or event empty file - 'touch /etc/resolv.conf'), the mail sending doesn't work.

with empty resolv.conf:
echo test| mailx -v -s test host@domain.net
hangs after several minutes send-mail process failes and messages lands in mailq. When I remove resolv.conf and run 'sendmail -q' the queued messages are resent ok and reaches recipient(s) (smart relay host is added to /etc/hosts).


with removed resolv.conf:
echo test| mailx -v -s test host@domain.net
works.

 

[ogniemi]

empty file I meant:

> /etc/resolv.conf

 

[KenCunningham]

Maybe just rename it resolv.orig so that you don't have to delete it?

I want to be good, is that not enough?

 

[p5wizard]

An "empty" resolv.conf means: named is running locally (If I remember correctly)

So if named isn't running the show and you have an empty resolv.conf, you'll see all kinds of strange waits and timeouts...


HTH,

p5wizard