Trouble with Nag-1.0/ePN/check_by_ssh: check returns UNKNOWN status _in_ Nagios.

[Stanley Hopcroft]

Dear Ladies and Gentlemen,

truss of the check_by_ssh process reports

tsitc# truss -p 12305 | more
(null)()                                    = 17 (0x11)
SIGNAL 20
read(0x3,0x8052000,0x4000)                       = 0 (0x0)
fstat(6,0xbfbff5d4)                              = 0 (0x0)
break(0x805a000)                                 = 0 (0x0)
read(0x6,0x8056000,0x4000)                       = 0 (0x0)
close(6)                                         = 0 (0x0)
close(3)                                         = 0 (0x0)
wait4(0x3013,0xbfbff6c0,0x0,0x0)                 = 12307 (0x3013)
fstat(1,0xbfbff364)                              = 0 (0x0)
write(1,0x8052000,17)                            = 17 (0x11)
exit(0xff)                                      process exit, rval =
65280

(on this system, SIGNAL 20 is SIGCHLD).

I interpret the last two lines of this as, plugin wrote 17 characters
('all databases ok\n') - so I probably got the correct process - and
returned OK (0xff >> 8 == 0. What does rval mean ?).

However, the Nag log and status pages report

Sat Feb 22 21:29:27 SERVICE ALERT: oradev;DB
Connectivity;UNKNOWN;HARD;3;all databases ok

Obviously I am wrong or missing something.

Your suggestions are _most_ welcome.

Yours sincerely.
-- 
------------------------------------------------------------------------
Stanley Hopcroft
------------------------------------------------------------------------

'...No man is an island, entire of itself; every man is a piece of the
continent, a part of the main. If a clod be washed away by the sea,
Europe is the less, as well as if a promontory were, as well as if a
manor of thy friend's or of thine own were. Any man's death diminishes
me, because I am involved in mankind; and therefore never send to know
for whom the bell tolls; it tolls for thee...'

from Meditation 17, J Donne.


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