FreeBSD virtual environment management and repository

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Dynamic DNS for jail

ddns command

			% cbsd ddns

Description:

Carries out registration of the records DNS in the corresponding zones relating to a jail. For its correct work correctly adjusted DNS server and a key is necessary for zone updating. As zones interested in updating at start and a stop of a jails can be a little, it is possible to list them in rc.conf of jails. When parameters ddns_zone_list not empty, at performance jstart и jstop, command

			cbsd ddns mode=add jname=xxx

and

			cbsd ddns mode=delete jname=xxx

are carried out automatically. Argument mode means carried-out action with record — can be add or delete.

The minimum configuration in jail rc.conf:

			ddns_zone_list="";

should have the list of names of configurations for zones. One record for one zone. In a name there should not be points.

			ddns_key_name_of_zone="";

The parameter contains a way to the file of a private key of a zone name_of_zone, listed in ddns_zone_list.

			ddns_zones_name_of_zone="";

contains the list of those records which should be updated in the corresponding zone.

Example:

configuration for updating of two zones: my.domain and bsdstore.ru and addition or removal jJail IP addresses under the records test1.my.domain + test2.my.domain and relay.bsdstore.ru:

			ddns_zone_list="my_domain bsdstore";
			ddns_key_my_domain="/usr/jails/etc/zonekeys/Kmy.domain.+157+52142.private";
			ddns_key_bsdstore="/usr/jails/etc/zonekeys/Kbsdstore.+157+52142.private";
			ddns_zones_my_domain="jail1.my.domain jail1.my.domain";
			ddns_zones_bsdstore="relay.bsdstore.ru";

Configuration for DNS with named:

			key bsdstore.ru. {algorithm "HMAC-MD5";secret "YrVW9yP6gNMA7VbcU/r2mSIwYnFj/XkCDd6QuqOHE26/ipnrPy+eXrKrUyaFhB2XWNdVLUX7QCUkfhg4zN5YiA==";};
			zone "bsdstore.ru" {type master;file "/etc/namedb/dynamic/bsdstore.ru";allow-update {key bsdstore.ru; };};

key and private key generated by:

			dnssec-keygen -b 512 -a HMAC-MD5 -v 2 -n HOST bsdstore.ru.