периодически в лог стали сыпаться такие сообщения:
Oct 16 00:12:19 router named[28893]: Cleaned cache of 60 RRsets
Oct 16 00:12:19 router named[28893]: USAGE 1003176739 1003129939 CPU=0.76u/0.33s CHILDCPU=0u/0s
Oct 16 00:12:19 router named[28893]: NSTATS 1003176739 1003129939 A=2066 PTR=60 MX=48 ANY=288
Oct 16 00:12:19 router named[28893]: XSTATS 1003176739 1003129939 RR=1988 RNXD=35 RFwdR=1503 RDupR=18 RFail=22 RFErr=0 RErr=0 RAXFR=0 RLame=2 ROpts=0 SSysQ=321 SAns=941 SFwdQ=1555 SDupQ=85 SErr=0 RQ=2462 RIQ=0 RFwdQ=0 RDupQ=79 RTCP=6 SFwdR=1503 SFail=0 SFErr=0 SNaAns=941 SNXD=2
Oct 16 00:57:26 router named[32375]: starting. named 8.2.2-P5 Mon Feb 28 10:17:53 EST 2000 ^Iroot@porky.devel.redhat.com:/usr/src/bs/BUILD/bind-8.2.2_P5/src/bin/named
Oct 16 00:57:26 router named[32375]: hint zone "" (IN) loaded (serial 0)
Oct 16 00:57:26 router named[32375]: Zone "0.0.127.in-addr.arpa" (file named.local): No default TTL set using SOA minimum instead
Oct 16 00:57:26 router named[32375]: master zone "0.0.127.in-addr.arpa" (IN) loaded (serial 1997022700)
Oct 16 00:57:26 router named[32375]: unix control "/var/run/ndc" unlink failed: Permission denied
Oct 16 00:57:26 router named[32375]: ctl_server: bind: Address already in use
Oct 16 00:57:26 router named[32375]: couldn't create pid file '/var/run/named.pid'
Oct 16 00:57:26 router named[32375]: bind(dfd=20, [127.0.0.1].53): Permission denied
Oct 16 00:57:26 router named[32375]: deleting interface [127.0.0.1].53
Oct 16 00:57:26 router named[32375]: bind(dfd=20, [XXX.XXX.XXX.XXX].53): Permission denied
Oct 16 00:57:26 router named[32375]: deleting interface [XXX.XXX.XXX.XXX].53
Oct 16 00:57:26 router named[32375]: bind(dfd=20, [YYY.YYY.YYY.YYY].53): Permission denied
Oct 16 00:57:26 router named[32375]: deleting interface [YYY.YYY.YYY.YYY].53
Oct 16 00:57:26 router named[32375]: not listening on any interfaces
Oct 16 00:57:26 router named[32375]: Forwarding source address is [0.0.0.0].1560
Oct 16 00:57:26 router named[32376]: couldn't create pid file '/var/run/named.pid'
Oct 16 00:57:26 router named[32376]: Ready to answer queries.
Oct 16 01:57:26 router named[32376]: Cleaned cache of 0 RRsets
Oct 16 01:57:26 router named[32376]: bind(dfd=20, [127.0.0.1].53): Permission denied
Oct 16 01:57:26 router named[32376]: deleting interface [127.0.0.1].53
Oct 16 01:57:26 router named[32376]: bind(dfd=20, [XXX.XXX.XXX.XXX].53): Permission denied
Oct 16 01:57:26 router named[32376]: deleting interface [XXX.XXX.XXX.XXX].53
Oct 16 01:57:26 router named[32376]: bind(dfd=20, [YYY.YYY.YYY.YYY].53): Permission denied
Oct 16 01:57:26 router named[32376]: deleting interface [YYY.YYY.YYY.YYY].53
Oct 16 01:57:26 router named[32376]: not listening on any interfaces
Oct 16 01:57:26 router named[32376]: USAGE 1003183046 1003179446 CPU=0u/0.01s CHILDCPU=0u/0s
Oct 16 01:57:26 router named[32376]: NSTATS 1003183046 1003179446
Oct 16 01:57:26 router named[32376]: XSTATS 1003183046 1003179446 RR=1 RNXD=0 RFwdR=0 RDupR=0 RFail=0 RFErr=0 RErr=0 RAXFR=0 RLame=0 ROpts=0 SSysQ=1 SAns=0 SFwdQ=0 SDupQ=0 SErr=0 RQ=0 RIQ=0 RFwdQ=0 RDupQ=0 RTCP=0 SFwdR=0 SFail=0 SFErr=0 SNaAns=0 SNXD=0
Oct 16 02:57:26 router named[32376]: Cleaned cache of 0 RRsets
Oct 16 02:57:26 router named[32376]: bind(dfd=20, [127.0.0.1].53): Permission denied
Oct 16 02:57:26 router named[32376]: deleting interface [127.0.0.1].53
Oct 16 02:57:26 router named[32376]: bind(dfd=20, [XXX.XXX.XXX.XXX].53): Permission denied
Oct 16 02:57:26 router named[32376]: deleting interface [XXX.XXX.XXX.XXX].53
Oct 16 02:57:26 router named[32376]: bind(dfd=20, [YYY.YYY.YYY.YYY].53): Permission denied
Oct 16 02:57:26 router named[32376]: deleting interface [YYY.YYY.YYY.YYY].53
Oct 16 02:57:26 router named[32376]: not listening on any interfaces
Oct 16 02:57:26 router named[32376]: USAGE 1003186646 1003179446 CPU=0u/0.01s CHILDCPU=0u/0s
Oct 16 02:57:26 router named[32376]: NSTATS 1003186646 1003179446
Oct 16 02:57:26 router named[32376]: XSTATS 1003186646 1003179446 RR=1 RNXD=0 RFwdR=0 RDupR=0 RFail=0 RFErr=0 RErr=0 RAXFR=0 RLame=0 ROpts=0 SSysQ=1 SAns=0 SFwdQ=0 SDupQ=0 SErr=0 RQ=0 RIQ=0 RFwdQ=0 RDupQ=0 RTCP=0 SFwdR=0 SFail=0 SFErr=0 SNaAns=0 SNXD=0
соответственно DNS не работает пока не перезапустишь named, через 2-3 дня история повторяется. Из-за чего такое может происходить?
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