Notifications stopped

[Chris Wilson]

Hi Andreas,

First of all, thanks for taking the time to help me!

> > The file notify.out was created, but nothing written to it.
> 
> The mail command doesn't print anything to stdout normally, and if 
> nothing goes wrong it won't print to stderr either, so it's supposed to 
> be empty.

Yeah, I wasn't expecting it to create anything, but it does mean that
Nagios is running and making notifications.

> grep -i 'shutting down' nagios.cfg
> It might have not dumped core and just shut down gracefully. If you're 
> using CVS code a month or so old, that was the default behaviour.

I should have mentioned that I'm running Nagios 1.2, sorry.

Nagios was running and detected that the servers were down (visible in
status.cgi) but did not send notifications.

I can now reproduce this at will, and have an strace log of the problem.
When nagios is started at boot time, it seems to run, but can't send any
mail. It manages to spawn /bin/mail, which crashes with a segmentation
fault. This does not appear to be detected or logged by Nagios.

Restarting Nagios after boot fixes it, so I'm assuming that it's an
environment issue. Can anyone help me figure out what's wrong?

The last will and testament of /bin/mail is:

15:47:58 execve("/bin/mail", ["/bin/mail", "-s", 
	"[NAGIOS] Alert: \"Loband Pilot Web Server 1\" is DOWN",
 	"chris at aidworld.org"], [/* 13 vars */] = 0
15:47:58 uname({sys="Linux", node="dev.aidworld.org", ...}) = 0
[...]
15:47:58 socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 3
15:47:58 connect(3, {sa_family=AF_INET, sin_port=htons(53),
	sin_addr=inet_addr("127.0.0.1")}, 28) = 0
15:47:58 fcntl64(3, F_GETFL) = 0x2 (flags O_RDWR)
15:47:58 fcntl64(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0
15:47:58 gettimeofday({1109692078, 396780}, NULL) = 0
15:47:58 poll([{fd=3, events=POLLOUT, revents=POLLOUT}], 1, 0) = 1
15:47:58 --- SIGSEGV (Segmentation fault) @ 0 (0) ---

Thanks in advance for any help.

Cheers, Chris.
-- 
(aidworld) chris wilson | chief engineer (chris at aidworld.org)



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