Cleaning up slave's files. Can I get rid of these?

Sat Feb 7 18:41:13 UTC 2015

Hi.

I inherited a Bind 9.10.1 server.

I'm poking around and doing some cleaning up.

I noticed one folder

	./namedb/slave

has gotten really big

	du -h --max-depth=1 . -c
		616M    .
		616M    total

That seems pretty big for a server with just 6 smallish zones :-/

In that folder there's

	ls -altr
		total 616M
		-rw-rw-r--+ 1 named named  29K Sep 12 06:15 jn-3ZAk20JZ
		-rw-rw-r--+ 1 named named  25K Sep 12 06:28 jn-FE0wG6X2
		-rw-rw-r--+ 1 named named  27M Sep 12 06:51 db-9DM3MOBn
		-rw-rw-r--+ 1 named named  43K Sep 12 06:52 db-73iXqDrw
		-rw-rw-r--+ 1 named named  18M Sep 12 21:54 tmp-lpfjwEtsZP
		-rw-rw-r--+ 1 named named  42K Dec 20 11:10 jn-95up4TUj
		-rw-rw-r--+ 1 named named  65K Dec 20 11:34 jn-7l6JI7kb
		-rw-rw-r--+ 1 named named  40M Dec 20 23:24 db-GyLZPsYg
		-rw-rw-r--+ 1 named named  47K Dec 20 23:32 db-mGdWwJ2T
		-rw-rw-r--+ 1 named named  26K Jan 19 13:24 jn-9FfIrx8O
		-rw-rw-r--+ 1 named named  25K Jan 19 13:33 jn-8vrkYF5Q
		-rw-rw-r--+ 1 named named  47K Jan 21 08:28 db-q3R0QGkx
		-rw-rw-r--+ 1 named named  40M Jan 21 08:53 db-44x8DQqL
		-rw-rw-r--+ 1 named named  46K Jan 23 06:16 jn-uAFFwQ2R
		-rw-rw-r--+ 1 named named  46K Jan 23 06:16 jn-saKIglp1
		-rw-rw-r--+ 1 named named  46K Jan 23 06:16 jn-jMxWE6tF
		-rw-rw-r--+ 1 named named  25K Jan 23 06:18 jn-m2GmhOQv
		-rw-rw-r--+ 1 named named  25K Jan 23 06:18 jn-L8RT1EHo
		-rw-rw-r--+ 1 named named  25K Jan 23 06:18 jn-5HYrFrfv
		-rw-rw-r--+ 1 named named  42M Jan 23 10:10 db-767UMR0l
		-rw-rw-r--+ 1 named named  47K Jan 23 10:13 db-14VnAgyH
		-rw-rw-r--+ 1 named named  47K Jan 23 13:50 db-PtvAdbpN
		-rw-rw-r--+ 1 named named  42M Jan 23 13:50 db-eRkketVy
		-rw-rw-r--+ 1 named named  42M Jan 23 13:50 db-cN9zHoDO
		-rw-rw-r--+ 1 named named  47K Jan 23 13:51 db-WfDr7va8
		-rw-rw-r--+ 1 named named  38K Jan 28 16:28 jn-x8URm6sC
		-rw-rw-r--+ 1 named named  38K Jan 28 16:28 jn-x07JdgI6
		-rw-rw-r--+ 1 named named  38K Jan 28 16:28 jn-rsfJ1MiK
		-rw-rw-r--+ 1 named named  38K Jan 28 16:28 jn-nip81ZJj
		-rw-rw-r--+ 1 named named  38K Jan 28 16:28 jn-lqyDsPF1
		-rw-rw-r--+ 1 named named  38K Jan 28 16:28 jn-jh65j8Xr
		-rw-rw-r--+ 1 named named  38K Jan 28 16:28 jn-gVzWoWTL
		-rw-rw-r--+ 1 named named  38K Jan 28 16:28 jn-E1DAeALA
		-rw-rw-r--+ 1 named named  24K Jan 28 16:46 jn-uofLXWEo
		-rw-rw-r--+ 1 named named  24K Jan 28 16:46 jn-SP0aPgKl
		-rw-rw-r--+ 1 named named  24K Jan 28 16:46 jn-pXWjORVe
		-rw-rw-r--+ 1 named named  24K Jan 28 16:46 jn-ov8d6fv1
		-rw-rw-r--+ 1 named named  24K Jan 28 16:46 jn-ofDJRNfb
		-rw-rw-r--+ 1 named named  24K Jan 28 16:46 jn-nPOPJhwW
		-rw-rw-r--+ 1 named named  24K Jan 28 16:46 jn-hHjyMs05
		-rw-rw-r--+ 1 named named  24K Jan 28 16:46 jn-AamWqD0y
		-rw-rw-r--+ 1 named named  47K Jan 29 13:20 db-6EoGA3dF
		-rw-rw-r--+ 1 named named  41M Jan 29 13:35 db-0ROkvBcO
		-rw-rw-r--+ 1 named named  47K Jan 29 13:46 db-7zM7tqtS
		-rw-rw-r--+ 1 named named  41M Jan 29 13:47 db-dWvvuGiP
		-rw-rw-r--+ 1 named named  47K Jan 29 13:53 db-vSg2h8Uf
		-rw-rw-r--+ 1 named named  41M Jan 29 13:54 db-Syyp7cvi
		-rw-rw-r--+ 1 named named  41M Jan 29 14:41 db-cBdHJV02
		-rw-rw-r--+ 1 named named  47K Jan 29 14:48 db-ZxrLOKDL
		-rw-rw-r--+ 1 named named  42M Jan 30 13:28 db-irK15L3e
		-rw-rw-r--+ 1 named named  47K Jan 30 13:29 db-J3CjwQyq
		-rw-rw-r--+ 1 named named  47K Jan 30 13:37 db-XzWfifrQ
		-rw-rw-r--+ 1 named named  42M Jan 30 13:38 db-TdTLUST8
		-rw-rw-r--+ 1 named named  47K Jan 30 13:40 db-noZFELt4
		-rw-rw-r--+ 1 named named  42M Jan 30 13:41 db-EvCK5tiA
		-rw-rw-r--+ 1 named named  47K Jan 30 13:43 db-fDi3Ivgi
		-rw-rw-r--+ 1 named named  42M Jan 30 13:44 db-s9GrD5Ki
		drwxr-xr-x  5 root  root  4.0K Feb  5 18:52 ../
		-rw-rw-r--+ 1 named named  47K Feb  7 09:39 drop.rpz.spamhaus.org.zone
		-rw-rw-r--+ 1 named named  36K Feb  7 10:17 drop.rpz.spamhaus.org.zone.jnl
		-rw-rw-r--+ 1 named named  40M Feb  7 10:19 rpz.spamhaus.org.zone
		-rw-rw-r--+ 1 named named  22K Feb  7 10:19 rpz.spamhaus.org.zone.jnl
		drwxrwxr-x+ 2 named named 4.0K Feb  7 10:19 ./

In the dns conf for this server I see

	 ...
	zone "rpz.spamhaus.org" IN {
	 type slave;
	 file "/namedb/slave/rpz.spamhaus.org.zone";
	 ...
	zone "drop.rpz.spamhaus.org" IN {
	 type slave;
	 file "/namedb/slave/drop.rpz.spamhaus.org.zone";
	 ...

It looks like those RPZ zone 'subscriptions' are what's filling up those files.

Question -- A bunch of those files are older than 'today'.  Can I get rid of some or all of them?  Or are they needed?

If I can delete them, going forward what's the right way to set up bind so I don't end up with those old files?  Some sort of rotation script?

Thanks!