For critical stuff like NFS nodes, it is best practice for LDAP, DNS, SSD
and NFS targets to have /etc/hosts file entries.
Especially for NFS/iSCSI stuff. In my experience it doesn't recover at all
usually required a reboot to get its state marbles/sanity back.
This isn't too painful if you have a configuration management system on
your network like puppet or Redhat Satellite Server.
On Tue, Apr 21, 2020 at 4:11 PM Charles Hedrick <hedrick(a)rutgers.edu> wrote:
We just had to restart sssd on a large number of machines because we
had a
period of DNS failure. We’re using IPA as the backend. Faiures occurred on
Centos 7 and 8 and Ubuntu 18.
I don’t necessarily expect everything to work when DNS is dead, but I did
expect it t recover.
For the moment we’re adding entries to /etc/hosts on all of our systems
for the IPA servers and our main file servers. Unfortunately DNS is run by
the campus, so it’s not under our control.
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