DNS always down! Help

[Kevin Darcy]

leungwai at Pacific.net wrote:

> Any one Please help:
>
> My DNS (Bind 8) always down, it can run normally one to two day, after that
> I've checked the "named" status /etc/rc.d/init.d/named status  was not
> running.

That must be a Linux thing. Talk to the Linux folks about how to interpret
that result.

> But when I try ps -e to list the running processes, I can found
> named.

Then named *is* running after all! I guess "/etc/rc2.d/init.d/named status"
lied...

> Also, I found my server log as follows:
> These messages repeat more than 2 hours....is there any problems here??
> I'm using RedHat 6.2, the server running DNS, Sendmail, Apache and WU-Ftp
> together.
>
> Feb 19 17:45:35 ns1 inetd[491]: pid 718: exit status 1
> Feb 19 18:08:39 ns1 named[505]: Cleaned cache of 0 RRsets
> Feb 19 18:08:39 ns1 named[505]: USAGE 982577319 982559958 CPU=0.12u/0.05s
> CHILDCPU=0u/0s
> Feb 19 18:08:39 ns1 named[505]: NSTATS 982577319 982559958 A=7 PTR=72
> Feb 19 18:08:39 ns1 named[505]: XSTATS 982577319 982559958 RR=14 RNXD=6
> RFwdR=10 RDupR=0 RFail=0 RFErr=0 RErr=0 RAXFR=0$
> Feb 19 19:08:39 ns1 named[505]: Cleaned cache of 2 RRsets
> Feb 19 19:08:39 ns1 named[505]: USAGE 982580919 982559958 CPU=0.12u/0.05s
> CHILDCPU=0u/0s
> Feb 19 19:08:39 ns1 named[505]: NSTATS 982580919 982559958 A=7 PTR=76
> Feb 19 19:08:39 ns1 named[505]: XSTATS 982580919 982559958 RR=14 RNXD=6
> RFwdR=10 RDupR=0 RFail=0 RFErr=0 RErr=0 RAXFR=0$
> Feb 19 20:08:39 ns1 named[505]: Cleaned cache of 0 RRsets
> Feb 19 20:08:39 ns1 named[505]: USAGE 982584519 982559958 CPU=0.21u/0.05s
> CHILDCPU=0u/0s
> Feb 19 20:08:39 ns1 named[505]: NSTATS 982584519 982559958 A=15 PTR=87
> Feb 19 20:08:39 ns1 named[505]: XSTATS 982584519 982559958 RR=58 RNXD=6
> RFwdR=11 RDupR=0 RFail=0 RFErr=0 RErr=0 RAXFR=0$
> Feb 19 21:08:39 ns1 named[505]: Cleaned cache of 0 RRsets
> Feb 19 21:08:39 ns1 named[505]: USAGE 982588119 982559958 CPU=0.22u/0.05s
> CHILDCPU=0u/0s
> Feb 19 21:08:39 ns1 named[505]: NSTATS 982588119 982559958 A=15 PTR=88
> Feb 19 21:08:39 ns1 named[505]: XSTATS 982588119 982559958 RR=61 RNXD=6
> RFwdR=11 RDupR=0 RFail=0 RFErr=0 RErr=0 RAXFR=0$
> Feb 19 22:08:39 ns1 named[505]: Cleaned cache of 0 RRsets
> Feb 19 22:08:39 ns1 named[505]: USAGE 982591719 982559958 CPU=0.22u/0.05s
> CHILDCPU=0u/0s
> Feb 19 22:08:39 ns1 named[505]: NSTATS 982591719 982559958 A=15 PTR=88
> Feb 19 22:08:39 ns1 named[505]: XSTATS 982591719 982559958 RR=61 RNXD=6
> RFwdR=11 RDupR=0 RFail=0 RFErr=0 RErr=0 RAXFR=0$
> Feb 19 23:08:39 ns1 named[505]: Cleaned cache of 0 RRsets
> Feb 19 23:08:39 ns1 named[505]: USAGE 982595319 982559958 CPU=0.22u/0.05s
> CHILDCPU=0u/0s

No problems there. The nameserver is answering queries, doing maintenance,
consuming CPU, etc.

Is there actually a problem here? Or are you just putting WAY too much trust
in Linux'es "/etc/rc.d/init.d/named status"?? Don't believe everything you
read. (Including this :-)


- Kevin