On 11/17/2018 06:43 AM, Alice Wonder wrote:
CentOS 7.5 image running on linode.
unbound running on localhost.
Have to use a cron job once a minute to keep /etc/resolv.conf using the
localhost for name resolution - whenever NetworkManager gets restarted
(usually only a system boot) it gets over-written.
It seems every distro has a different way of preventing NetworkManager
from replacing that file.
I found instructions for Fedora that said create
/etc/NetworkManager/conf.d/no-dns.conf containing
[main]
dns=none
That doesn't seem to have any effect.
Poking around, I find a file on boot seems to be created called
/var/run/NetworkManager/resolv.conf
It has most of the contents of what ends up in /etc/resolv.conf - except
w/o the last line, which just reads rotate in generated /etc/resolv.conf.
It says it's generated by NetworkManager (both /etc/resolv.conf and the
one in /var/run/NetworkManager) but neither are specific enough to
indicate what is causing them to be created so I can turn it off.
Anyone know how to tell NetworkManager to just not create that file?
Using a cron job to overwrite it once a minute works but there must be a
proper way.
I really wish KISS was a design goal when designing system configuration.
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Just found this -
# cat dhclient-exit-hooks
echo 'options rotate' >> /etc/resolv.conf
That's where the last line in /etc/resolv.conf is coming from.
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