multiple instances of DNSDist always logs the process name as DNSDist

ClaudioRifo commented 3 years ago

Program: dnsdist
Issue type: Bug report

Short description

when running multiple instances of DNSDist it always logs the process name as DNSDist (it does not use the dnsdist@foo or dnsdist-foo like PowerDNS does)

Environment

Operating system: ubuntu 18.04
Software version: DNSDist 1.6.0-alpha1
Software source: PowerDNS repository

Steps to reproduce

create multiple instances like stated on the documentation: https://dnsdist.org/advanced/multiple-instance.html
check syslog for services start/stop, you will see only dnsdist as process name

Expected behaviour

I would expect the same behavior as PowerDNS. See process names x instance (like pdns_server-instance1).

Actual behaviour

you will see only dnsdist as process name

klaus-nicat commented 3 years ago

I patched /lib/systemd/system/dnsdist@.service with:

 RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
 LimitNOFILE=16384
 TasksMax=8192
+SyslogIdentifier=dnsdist_%i

 [Install]
 WantedBy=multi-user.target

klaus-nicat commented 3 years ago

Maybe it would be better to use dash instead of underscore. Dash is also used for PowerDNS.

Habbie commented 3 years ago

I patched /lib/systemd/system/dnsdist@.service with:

Looks like we already have that for auth, but not for rec. I'll tag both rec and dnsdist on this ticket so we can check.

Habbie commented 3 years ago

Note: do not patch files in /lib. Put overrides in /etc instead, so your modifications do not break on upgrades.

ClaudioRifo commented 2 years ago

Ok, complete instructions on workaround (while this gets released):

Execute x each service:

systemctl edit @.**@.> systemctl edit @.**@.> systemctl edit @.**@.>

this will open a text editor where you need to include:

[Service] SyslogIdentifier=dnsdist_%i

And it will create one override file x service like:

@./override.conf @./override.conf @.***/override.conf

Restart each service and now each service should have its own identifier.

BONUS: If you also need to separate the logs into different files create a file for rsyslog /etc/rsyslog.d/dnsdist.conf With content:

:programname , isequal, "dnsdist serv1" /var/log/dnsdist serv1.log :programname , isequal, "dnsdist serv2" /var/log/dnsdist serv2.log :programname , isequal, "dnsdist serv3" /var/log/dnsdist serv3.log :programname , isequal, "dnsdist" /var/log/dnsdist.log & stop

And restart rsyslog. (line 4 in the file is in case you use dnsdist default service and also +3 additional services)

From: Peter van Dijk @.> Sent: Friday, September 10, 2021 5:05 AM To: PowerDNS/pdns @.> Cc: Claudio P. Rifo Wahl @.>; Author @.> Subject: Re: [PowerDNS/pdns] multiple instances of DNSDist always logs the process name as DNSDist (#10651)

Note: do not patch files in /lib. Put overrides in /etc instead, so your modifications do not break on upgrades.

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PowerDNS / pdns