[Samba] Workaround for bind9 reload bug : samba_dlz Ignoring duplicate zone

[L.P.H. van Belle]

Almost Harry... 

For debian Stretch.
systemctl cat bind9
# /lib/systemd/system/bind9.service
[Unit]
Description=BIND Domain Name Server
Documentation=man:named(8)
After=network.target
Wants=nss-lookup.target
Before=nss-lookup.target

[Service]
EnvironmentFile=/etc/default/bind9
ExecStart=/usr/sbin/named -f $OPTIONS
ExecReload=/usr/sbin/rndc reload
ExecStop=/usr/sbin/rndc stop

[Install]
WantedBy=multi-user.target


The correct workaround is edit, and add.. 
systemctl edit bind9
Add :
[Service]
ExecReload=


And done. 

Greetz, 

Louis


> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens 
> Harry Jede via samba
> Verzonden: maandag 12 maart 2018 19:26
> Aan: samba at lists.samba.org; Prunk Dump
> Onderwerp: Re: [Samba] Workaround for bind9 reload bug : 
> samba_dlz Ignoring duplicate zone
> 
> Am Montag, 12. März 2018, 18:13:09 CET schrieb Prunk Dump via samba:
> > Hi samba team !
> > 
> > I'm face with a new problem on a new Samba PDC install (Debian 9).
> > 
> > I don't know why, but systemd run multiples "rndc reconfig" commands
> > during the init script. So the bind9 log file show :
> > -> A successful start
> > -> A failed reconfig (samba_dlz Ignoring duplicate zone)
> > at each boot/reboot.
> > 
> > So I need to restart bind9 each time manually. I created a wrapper
> > script and moved rndc to rndc.ORIG to intercept the reload and
> > reconfig commands. But I don't like this solution as rndc 
> is a binary
> > and moving it prevent security updates to be applied on it.
> > 
> > Is there a way to make "rndc reload" and "rndc reconfig" 
> working with
> > samba ?
> I believe this comes from /etc/init.d/bind9.
> Change this init script to avoid playing with rndc.
> 
> comment the reload part:
> #    reload|force-reload)
> #        log_daemon_msg "Reloading domain name service..." "bind9"
> #        if ! check_network; then
> #            log_action_msg "no networks configured"
> #            log_end_msg 1
> #        fi
> #
> #        /usr/sbin/rndc reload >/dev/null && log_end_msg 0 || 
> log_end_msg 1
> #    ;;
> 
> switch reload to restart:
>     restart|reload|force-reload)
> 
> Yes, it is slower. Yes, it interrupts the bind service for a 
> short time.
> So what. Boot error is gone.
>  
> > Is someone have an idea whose service send these "rndc reconfig"
> > command ? I can't find the origin.
> > 
> > Thanks !
> > 
> > Baptiste.
> 
> 
> -- 
> 
> Gruss
> 	Harry Jede
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