Il 23/10/2025 08:18, Steven Levine ha scritto:

In <list-14480631@2rosenthals.com>, on 10/19/25
    at 12:23 PM, "Massimo S." <ecs-isp@2rosenthals.com> said:

Hi,

Of course no, sometimes it "zombify" even 2 times per day and a reboot is
required. (I've a lot of dumps of the named process in this condition if
this can help). Process unkillable and unresponsive.

Rather than "of course no", I suspect you mean unfortunately no.  Dan's
dns servers stay up for weeks at a time.  His setup is not huge, but there
are more than 70 zone files.

some minutes ago, i received a notify from my fault-daemon
again bind on MTA1 has become unresponsibe and unkillable
i neither was connected to the vm..

at 9:17 syslog (from bind) wrote this:

...
could not listen on UDP socket: address in use
creating IPv4 inteface failed; interface ignored
not listing on any interface
unable to listen on any interface
loading configuration: failure
exiting (due to fatal error)

this is the fault-daemon that tried to restart bind since it was not
answering dns requests (the fault-daemon do a check each 5 minutes)

so i connected to the VM, i tried to kill it, but the process was unkillable
and i had to setboot /b

what was doing bind before the "unresponsibe+unkillable" state?
nothing special, just answering dns requests
there is no DDoS, i've examined the logs

if this can help, the same bind build on the other VM 2 cores is not showing the issue
(this VM instead has 8 cores assigned), dunno if this is due to SMP

it also do one or two daily scheduled restarts