I have two DNS servers in master - slave configuration
When I restart master, everything is OK but slave server sometimes hangs.
Mar 7 01:55:27 ns2 named: shutting down: flushing changes
Mar 7 01:55:27 ns2 named: stopping command channel on 127.0.0.1#953
Mar 7 01:55:27 ns2 named: stopping command channel on ::1#953
Mar 7 01:55:27 ns2 named: no longer listening on 127.0.0.1#53
Mar 7 01:55:27 ns2 named: no longer listening on 192.168.100.9#53
After that, bind doesn't work and I can see that it is still running and it does not respond to queries....
[root@ns2 ~]# ps ax|grep named
1712 ? Ssl 0:02 /usr/sbin/named -u named -t /var/named/chroot
2488 pts/0 R+ 0:00 grep named
Logs from master server are similar but after I stop bind I have a line
Mar 6 23:58:39 ns1 named: exiting
As you can see above, this line doesn't exist in slave server log
Commands pkill named, service named restart, service named stop,... doesn't help..... Only option is to force server restart... this is not a solution because server needs 5-10 min. to boot up again...
Centos, BIND is chrooted, v 9.3.4
Any ideas ?