[Samba] Demoted/removed a DC, and the NS records?

[Marco Gaiarin]

> Following:
> 	https://wiki.samba.org/index.php/Demoting_a_Samba_AD_DC
> i've demoted and removed a DC.

A note. The demotion caused a reconfiguration of bind in every DCs.
logs are:

 Feb 15 11:44:34 vdcpp2 named[1036]: received control channel command 'reload'
 Feb 15 11:44:34 vdcpp2 named[1036]: reading built-in trusted keys from file '/etc/bind/bind.keys'
 Feb 15 11:44:34 vdcpp2 named[1036]: using default UDP/IPv4 port range: [1024, 65535]
 Feb 15 11:44:34 vdcpp2 named[1036]: using default UDP/IPv6 port range: [1024, 65535]
 Feb 15 11:44:35 vdcpp2 named[1036]: sizing zone task pool based on 5 zones
 Feb 15 11:44:35 vdcpp2 named[1036]: Loading 'AD DNS Zone' using driver dlopen
 Feb 15 11:44:35 vdcpp2 named[1036]: samba_dlz: starting configure
 Feb 15 11:44:35 vdcpp2 named[1036]: samba_dlz: Ignoring duplicate zone 'ad.fvg.lnf.it' from 'DC=@,DC=ad.fvg.lnf.it,CN=MicrosoftDNS,DC=DomainDnsZones,DC=ad,DC=fvg,DC=lnf,DC=it'
 Feb 15 11:44:35 vdcpp2 named[1036]: samba_dlz: Ignoring duplicate zone '_msdcs.ad.fvg.lnf.it' from 'DC=@,DC=_msdcs.ad.fvg.lnf.it,CN=MicrosoftDNS,DC=ForestDnsZones,DC=ad,DC=fvg,DC=lnf,DC=it'
 Feb 15 11:44:35 vdcpp2 named[1036]: zone ad.fvg.lnf.it/NONE: (other) removed
 Feb 15 11:44:35 vdcpp2 named[1036]: zone _msdcs.ad.fvg.lnf.it/NONE: (other) removed
 Feb 15 11:44:35 vdcpp2 named[1036]: reloading configuration succeeded
 Feb 15 11:44:36 vdcpp2 named[1036]: samba_dlz: shutting down
 Feb 15 11:44:36 vdcpp2 named[1036]: reloading zones succeeded
 Feb 15 11:44:36 vdcpp2 named[1036]: all zones loaded
 Feb 15 11:44:36 vdcpp2 named[1036]: running

note the 'samba_dlz: shutting down'.

DNS seems to work (eg, resolve), but i was forced to restart *every* bind in every
DC to have again 'samba_dlz' activities in DNS (eg, client dns
registration).


Again, FYI.

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