All, I am hoping you can help me. I had working DNS servers, now my internal master server stopped. Restarting takes +1min. I have reinstalled it, rebooted the machine, that did not help. Server has 3 (virtual) cores and does not swap when the 'crash' happens.
What I mean by crash: the process is still running, but the server is not responding to queries. Even a `/etc/init.d/named status` takes 28 - 60 seconds. Here is a strace log from when it happens: http://pastebin.com/raw.php?i=7i0PgALG . Example: 6500 recvmsg(518, {msg_name(16)={sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("10.0.101.50")}, msg_iov(1)=[{"~\223\201\200\0\1\0\1\0\5\0\6\3ns3\5cymru\3com\0\0\1\0\1\300"..., 4096}], msg_controllen=32, {cmsg_len=32, cmsg_level=SOL_SOCKET, cmsg_type=0x1d /* SCM_??? */, ...}, msg_flags=0}, 0) = 252 6500 recvmsg(518, 0x7fd4b6588900, 0) = -1 EAGAIN (Resource temporarily unavailable) I am not a C programmer, but from this, what I think I see is a packet is being delivered to named, and that fails. What could the problem be? Is this a bind problem? OS/System problem maybe? I don't recall any (kernel) parameters since it worked. Regards, kl
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