[Nagiosplug-help] Broken check_procs plug-in on Fedora 3

[Ton Voon]

Ralph,

1.4 is quite an old release. Can you try the snapshot at http:// 
nagiosplug.sf.net/snapshot and see if that has the problem.

If so, please run ./check_procs -v -v -v to see what the ps command  
it is using on your platform.

Ton



On 5 Apr 2006, at 14:27, <Ralph.Grothe at itdz-berlin.de>  
<Ralph.Grothe at itdz-berlin.de> wrote:

> Hello,
>
> I stumbeled over a nasty quirk from check_procs that I compiled
> from the sources.
>
> To start, this constitutes my platform and build
>
> # /usr/local/src/nagios-plugins-1.4/plugins/check_procs -V
> check_procs (nagios-plugins 1.4) 1.43
> # uname -srv
> Linux 2.6.9-1.667smp #1 SMP Tue Nov 2 14:59:52 EST 2004
> # cat /etc/redhat-release
> Fedora Core release 3 (Heidelberg)
> # gcc -v
> Reading specs from /usr/lib/gcc/i386-redhat-linux/3.4.2/specs
> Configured with: ../configure --prefix=/usr
> --mandir=/usr/share/man --infodir=/usr/share/info --en
> able-shared --enable-threads=posix --disable-checking
> --with-system-zlib --enable-__cxa_atexit --d
> isable-libunwind-exceptions --enable-java-awt=gtk
> --host=i386-redhat-linux
> Thread model: posix
> gcc version 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)
>
>
> What happens is an obvious obsolete (and deprecated) invocation
> of BSD style ps
> which causes messages on stderr
>
> # /usr/local/src/nagios-plugins-1.4/plugins/check_procs -m PROCS
> -C httpd -u 0 -p 1
> System call sent warnings to stderr
> PROCS WARNING: 1 process with command name 'httpd', UID = 0
> (root), PPID = 1
>
>
> To see what gets written to stderr I had a look at the syscall
> trace.
>
>
> # strace -v -f -s 256 -e trace=read
> /usr/local/src/nagios-plugins-1.4/plugins/check_procs -m PROCS -C
> httpd -u 0 -p 1 2>&1|tail -6
> "", 4096)           = 0
> --- SIGCHLD (Child exited) @ 0 (0) ---
> read(5, "Warning: bad syntax, perhaps a bogus \'-\'? See
> /usr/share/doc/procps-3.2.3/FAQ\n", 4096)
>  = 78
> read(5, "", 4096)                       = 0
> System call sent warnings to stderr
> PROCS WARNING: 1 process with command name 'httpd', UID = 0
> (root), PPID = 1
>
>
> Ah, a helpful reference to the ps FAQ there
>
> # head /usr/share/doc/procps-3.2.3/FAQ
> Frequently Asked Questions about procps
>
> Why does "ps -aux" complain?
>
> According to the POSIX and UNIX standards, the above command asks
> to display
> all processes with a TTY (generally the commands users are
> running) plus all
> processes owned by a user named "x". If that user doesn't exist,
> then ps will
> assume you really meant "ps aux". The warning is given to gently
> break you
> of a habit that will cause you trouble if a user named "x" were
> created.
>
>
>
> And, yes ps didn't like to be invoked in an ambiguous old BSD
> style
>
> # ps -aux >/dev/null
> Warning: bad syntax, perhaps a bogus '-'? See
> /usr/share/doc/procps-3.2.3/FAQ
>
>
> But the ps hackers did provide a weird kludge
> (only for such a purpose made the mentioning of that env var in
> ps's manpage sense to me)
>
> # I_WANT_A_BROKEN_PS= ps -aux >/dev/null|wc -l
> 0
>
>
> As long as I cannot find a fix for that in check_procs
> I maybe could set my environment accordingly for my Nagios
> checks.
> But how do I propagate this to the plug-in,
> because it doesn't work like this?
>
> # I_WANT_A_BROKEN_PS=
> /usr/local/src/nagios-plugins-1.4/plugins/check_procs -m PROCS -C
> httpd -u
> 0 -p 1
> System call sent warnings to stderr
> PROCS WARNING: 1 process with command name 'httpd', UID = 0
> (root), PPID = 1
>
> # env I_WANT_A_BROKEN_PS=1
> /usr/local/src/nagios-plugins-1.4/plugins/check_procs -m PROCS -C
> http
> d -u 0 -p 1
> System call sent warnings to stderr
> PROCS WARNING: 1 process with command name 'httpd', UID = 0
> (root), PPID = 1
>
> # env -i I_WANT_A_BROKEN_PS=1
> /usr/local/src/nagios-plugins-1.4/plugins/check_procs -m PROCS -C
> h
> ttpd -u 0 -p 1
> System call sent warnings to stderr
> PROCS WARNING: 1 process with command name 'httpd', UID = 0
> (root), PPID = 1
>
> # (export I_WANT_A_BROKEN_PS=1;
> /usr/local/src/nagios-plugins-1.4/plugins/check_procs -m PROCS -C
>  httpd -u 0 -p 1)
> System call sent warnings to stderr
> PROCS WARNING: 1 process with command name 'httpd', UID = 0
> (root), PPID = 1
>
>
> Regards
> Ralph
>
>
>
>
>
>
>
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