[monitoring-plugins] check_procs: improve ps args autodetection

[Sven Nierlein]

    Module: monitoring-plugins
    Branch: master
    Commit: 282ccd4a8bbaa5d99c7c0cf6eba963ee3c0bff3a
    Author: Sven Nierlein <sven at nierlein.de>
 Committer: Sven Nierlein <sven at nierlein.org>
      Date: Mon Oct 25 17:28:17 2021 +0200
       URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=282ccd4

check_procs: improve ps args autodetection

one of the first ps commands in the configure.ac is `axwo 'stat comm vsz rss user uid pid ppid args'` which
works on most modern linux systems (checked debian 10/11 and centos 7/8). But this test misses the etime
argument. Therefore `check_procs --metric=ELAPSED` does not work.

To fix this, we simply do the same test including etime before that one.

Signed-off-by: Sven Nierlein <sven at nierlein.de>

---

 configure.ac                | 10 ++++++++++
 plugins/tests/check_procs.t | 11 +++++++----
 2 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/configure.ac b/configure.ac
index 7c17dcd..dfc37b5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -783,6 +783,16 @@ dnl 	ac_cv_ps_format=["%*s %d %d %d %d %*d %*d %d %d%*[ 0123456789abcdef]%[OSRZT
 dnl 	ac_cv_ps_cols=8
 dnl 	AC_MSG_RESULT([$ac_cv_ps_command])
 
+dnl This one is the exact same test as the next one but includes etime
+elif ps axwo 'stat comm vsz rss user uid pid ppid etime args' 2>/dev/null | \
+	egrep -i ["^ *STAT +[UCOMAND]+ +VSZ +RSS +USER +UID +PID +PPID +ELAPSED +COMMAND"] > /dev/null
+then
+	ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procrss,&procpcpu,procetime,procprog,&pos]"
+	ac_cv_ps_command="$PATH_TO_PS axwo 'stat uid pid ppid vsz rss pcpu etime comm args'"
+	ac_cv_ps_format="%s %d %d %d %d %d %f %s %s %n"
+	ac_cv_ps_cols=10
+	AC_MSG_RESULT([$ac_cv_ps_command])
+
 dnl Some gnu/linux systems (debian for one) don't like -axwo and need axwo.
 dnl so test for this first...
 elif ps axwo 'stat comm vsz rss user uid pid ppid args' 2>/dev/null | \
diff --git a/plugins/tests/check_procs.t b/plugins/tests/check_procs.t
index 54d43d9..7f612e8 100755
--- a/plugins/tests/check_procs.t
+++ b/plugins/tests/check_procs.t
@@ -69,9 +69,13 @@ SKIP: {
     like( $result->output, '/^PROCS OK: 0 processes with UID = -2 \(nobody\), args \'UsB\'/', "Output correct" );
 };
 
-$result = NPTest->testCmd( "$command --ereg-argument-array='mdworker.*501'" );
-is( $result->return_code, 0, "Checking regexp search of arguments" );
-is( $result->output, "PROCS OK: 1 process with regex args 'mdworker.*501' | procs=1;;;0;", "Output correct" );
+SKIP: {
+    skip 'check_procs is compiled with etime format support', 2 if `$command -vvv` =~ m/etime/mx;
+
+    $result = NPTest->testCmd( "$command --ereg-argument-array='mdworker.*501'" );
+    is( $result->return_code, 0, "Checking regexp search of arguments" );
+    is( $result->output, "PROCS OK: 1 process with regex args 'mdworker.*501' | procs=1;;;0;", "Output correct" );
+}
 
 $result = NPTest->testCmd( "$command --vsz 1000000" );
 is( $result->return_code, 0, "Checking filter by VSZ" );
@@ -129,4 +133,3 @@ is( $result->output, 'RSS CRITICAL: 5 crit, 0 warn out of 95 processes [WindowSe
 $result = NPTest->testCmd( "$command --ereg-argument-array='(nosuchname|nosuch2name)'" );
 is( $result->return_code, 0, "Checking no pipe symbol in output" );
 is( $result->output, "PROCS OK: 0 processes with regex args '(nosuchname,nosuch2name)' | procs=0;;;0;", "Output correct" );
-