The following email summarizes the functionality of the SIPX DNS server
following the fix for issues:
XX-6010 (SIPX making unauthorized DNS updates)
XX-6049 (DNS zone files overwritten when you send profiles)
SIPX 4.0.2 rev15962 / main rev15963 - SIPX DNS functionality
------------------------------------------------------------
RedHat files of interest:
/etc/named.conf
/var/named/*.zone (on DNS master)
/var/named/data/*.zone (on DNS slave)
SUSE files of interest:
/etc/named.conf
/var/lib/named/*.zone (on DNS master)
/var/lib/named/data/*.zone (on DNS slave)
Commands of interest:
service named restart (used if named.conf or *.zone file updated)
rndc reload (used if *.zone file updated)
The named.conf file will now contain a comment warning the installer
that
the DNS files may get overwritten along with the DNS mode, for example:
// DNS_MODE="Master"
This line can be changed by the installer following the instructions in
the comment so that the DNS files no longer get overwritten.
The current configuration options are described below.
Primary system SHOULD NOT be my DNS server (caching-only DNS server):
Primary server
- The named.conf file will have DNS_MODE "Caching".
- No named/*.zone file will be generated.
Distributed server
- The named.conf file will have DNS_MODE "Slave",
DNS is slaved to the primary server.
(Unchanged by this update but not sure if this is the best choice,
perhaps it should use "Caching" also).
Primary system SHOULD be my DNS server (master DNS server):
Primary server
- The named.conf file will have DNS_MODE "Master".
- The *.zone file will be automatically regenerated
(can be forced using Send Profile to the primary server).
Distributed server
- The named.conf file will have DNS_MODE "Slave",
DNS is slaved to the primary server.
- The *.zone file will be automatically copied from
the primary server whenever a file update is detected.
(zone file is copied into the named/data directory)
(detects changes in the serial number in the *.zone file)
If the installer changes the DNS_MODE in named.conf from
"Master" to "Manual" then the *.zone file will no longer
be automatically generated on the primary server.
The installer can then add additional DNS names to the
*.zone file and they won't get overwritten by the system.
The installer will then be responsible for changing the serial
number in the zone file so that it gets automatically copied
to the slave DNS servers.
Dave.
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