upstream/monitoring-plugins
1
0
Fork 0
mirror of https://github.com/monitoring-plugins/monitoring-plugins.git synced 2026-02-03 18:49:29 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions
monitoring-plugins/plugins/check_load.c
Ethan Galstad 44a321cb8a Initial revision 
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@2 f882894a-f735-0410-b71e-b25c423dba1c
2002-02-28 06:42:51 +00:00

321 lines
7.7 KiB
C
Raw Blame History

/******************************************************************************
*
* CHECK_LOAD.C
*
* Written by Felipe Gustavo de Almeida <galmeida@linux.ime.usp.br>
* License: GPL
* Command line: CHECK_LOAD <wload1> <cload1> <wload5> <cload5> <wload15> <cload15>
* First Written: 04/17/99
*
* Modifications:
*
* 05/18/1999 - Modified to work getloadavg where available, and use uptime
* where neither proc or getloadavg are found. Also use autoconf.
* mods by Karl DeBisschop (kdebiss@alum.mit.edu)
* 07/01/1999 - Added some #DEFINEs to allow compilation under NetBSD, as
* suggested by Andy Doran.
* mods by Ethan Galstad (nagios@nagios.org)
* 07/17/1999 - Initialized la[] array to prevent NetBSD from complaining
* mods by Ethan Galstad (nagios@nagios.org)
* 08/18/1999 - Integrated some code with common plugin utilities
* mods by Ethan Galstad (nagios@nagios.org)
* $Date$
* Note: The load format is the same used by "uptime" and "w"
*
*****************************************************************************/
#include "config.h"
#include "common.h"
#include "utils.h"
#ifdef HAVE_SYS_LOADAVG_H
#include <sys/loadavg.h>
#endif
/* needed for compilation under NetBSD, as suggested by Andy Doran */
#ifndef LOADAVG_1MIN
#define LOADAVG_1MIN 0
#define LOADAVG_5MIN 1
#define LOADAVG_15MIN 2
#endif /* !defined LOADAVG_1MIN */
#include "popen.h"
#ifdef HAVE_PROC_LOADAVG
#endif
#define PROGNAME "check_load"
int process_arguments (int argc, char **argv);
int call_getopt (int argc, char **argv);
int validate_arguments (void);
void print_usage (void);
void print_help (void);
float wload1 = -1, wload5 = -1, wload15 = -1;
float cload1 = -1, cload5 = -1, cload15 = -1;
int
main (int argc, char **argv)
{
#if HAVE_GETLOADAVG==1
int result;
double la[3] = { 0.0, 0.0, 0.0 }; /* NetBSD complains about unitialized arrays */
#elif HAVE_PROC_LOADAVG==1
FILE *fp;
char input_buffer[MAX_INPUT_BUFFER];
char *tmp_ptr;
#else
int result;
char input_buffer[MAX_INPUT_BUFFER];
#endif
float la1, la5, la15;
if (process_arguments (argc, argv) == ERROR)
usage ("\n");
#if HAVE_GETLOADAVG==1
result = getloadavg (la, 3);
if (result == -1)
return STATE_UNKNOWN;
la1 = la[LOADAVG_1MIN];
la5 = la[LOADAVG_5MIN];
la15 = la[LOADAVG_15MIN];
#elif HAVE_PROC_LOADAVG==1
fp = fopen (PROC_LOADAVG, "r");
if (fp == NULL) {
printf ("Error opening %s\n", PROC_LOADAVG);
return STATE_UNKNOWN;
}
la1 = la5 = la15 = -1;
while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, fp)) {
tmp_ptr = strtok (input_buffer, " ");
la1 = atof (tmp_ptr);
tmp_ptr = strtok (NULL, " ");
la5 = atof (tmp_ptr);
tmp_ptr = strtok (NULL, " ");
la15 = atof (tmp_ptr);
}
fclose (fp);
#else
child_process = spopen (PATH_TO_UPTIME);
if (child_process == NULL) {
printf ("Error opening %s\n", PATH_TO_UPTIME);
return STATE_UNKNOWN;
}
child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
if (child_stderr == NULL) {
printf ("Could not open stderr for %s\n", PATH_TO_UPTIME);
}
fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process);
sscanf (input_buffer, "%*[^l]load average: %f, %f, %f", &la1, &la5, &la15);
result = spclose (child_process);
if (result) {
printf ("Error code %d returned in %s\n", result, PATH_TO_UPTIME);
return STATE_UNKNOWN;
}
#endif
if ((la1 == -1) || (la5 == -1) || (la15 == -1)) {
#if HAVE_GETLOADAVG==1
printf ("Error in getloadavg()\n");
#elif HAVE_PROC_LOADAVG==1
printf ("Error processing %s\n", PROC_LOADAVG);
#else
printf ("Error processing %s\n", PATH_TO_UPTIME);
#endif
return STATE_UNKNOWN;
}
printf ("load average: %.2f, %.2f, %.2f", la1, la5, la15);
if ((la1 >= cload1) || (la5 >= cload5) || (la15 >= cload15)) {
printf (" CRITICAL\n");
return STATE_CRITICAL;
}
if ((la1 >= wload1) || (la5 >= wload5) || (la15 >= wload15)) {
printf (" WARNING\n");
return STATE_WARNING;
}
printf ("\n");
return STATE_OK;
}
/* process command-line arguments */
int
process_arguments (int argc, char **argv)
{
int c;
if (argc < 2)
return ERROR;
c = 0;
while (c += (call_getopt (argc - c, &argv[c]))) {
if (argc <= c)
break;
if (wload1 < 0 && is_nonnegative (argv[c]))
wload1 = atof (argv[c]);
else if (cload1 < 0 && is_nonnegative (argv[c]))
cload1 = atof (argv[c]);
else if (wload5 < 0 && is_nonnegative (argv[c]))
wload5 = atof (argv[c]);
else if (cload5 < 0 && is_nonnegative (argv[c]))
cload5 = atof (argv[c]);
else if (wload15 < 0 && is_nonnegative (argv[c]))
wload15 = atof (argv[c]);
else if (cload15 < 0 && is_nonnegative (argv[c]))
cload15 = atof (argv[c]);
}
return validate_arguments ();
}
int
call_getopt (int argc, char **argv)
{
int c, i = 0;
#ifdef HAVE_GETOPT_H
int option_index = 0;
static struct option long_options[] = {
{"warning", required_argument, 0, 'w'},
{"critical", required_argument, 0, 'c'},
{"version", no_argument, 0, 'V'},
{"help", no_argument, 0, 'h'},
{0, 0, 0, 0}
};
#endif
while (1) {
#ifdef HAVE_GETOPT_H
c = getopt_long (argc, argv, "+?Vhc:w:", long_options, &option_index);
#else
c = getopt (argc, argv, "+?Vhc:w:");
#endif
i++;
if (c == -1 || c == EOF)
break;
switch (c) {
case 'c':
case 'w':
i++;
}
switch (c) {
case 'w': /* warning time threshold */
if (is_intnonneg (optarg)) {
if (wload1 < 0 && is_nonnegative (argv[c]))
wload1 = atof (argv[c]);
else if (wload5 < 0 && is_nonnegative (argv[c]))
wload5 = atof (argv[c]);
else if (wload15 < 0 && is_nonnegative (argv[c]))
wload15 = atof (argv[c]);
break;
}
else if (strstr (optarg, ",") &&
sscanf (optarg, "%f,%f,%f", &wload1, &wload5, &wload15) == 3) {
break;
}
else {
usage ("Warning threshold must be float or float triplet!\n");
}
case 'c': /* critical time threshold */
if (is_intnonneg (optarg)) {
if (cload1 < 0 && is_nonnegative (argv[c]))
cload1 = atof (argv[c]);
else if (cload5 < 0 && is_nonnegative (argv[c]))
cload5 = atof (argv[c]);
else if (cload15 < 0 && is_nonnegative (argv[c]))
cload15 = atof (argv[c]);
break;
}
else if (strstr (optarg, ",") &&
sscanf (optarg, "%f,%f,%f", &cload1, &cload5, &cload15) == 3) {
break;
}
else {
usage ("Critical threshold must be float or float triplet!\n");
}
case 'V': /* version */
print_revision (my_basename (argv[0]), "$Revision$");
exit (STATE_OK);
case 'h': /* help */
print_help ();
exit (STATE_OK);
case '?': /* help */
usage ("Invalid argument\n");
}
}
return i;
}
int
validate_arguments (void)
{
if ((wload1 > cload1) || (wload5 > cload5) || (wload15 > cload15)) {
printf
("Inconsistence in parameters: \"warning load\" greater than \"critical load\".\n");
return STATE_UNKNOWN;
}
return OK;
}
void
print_usage (void)
{
printf
("Usage: check_load -w WLOAD1,WLOAD5,WLOAD15 -c CLOAD1,CLOAD5,CLOAD15\n"
" check_load --version\n" " check_load --help\n");
}
void
print_help (void)
{
print_revision (PROGNAME, "$Revision$");
printf
("Copyright (c) 1999 Felipe Gustavo de Almeida <galmeida@linux.ime.usp.br>\n"
"Copyright (c) 2000 Karl DeBisschop\n\n"
"This plugin tests the current system load average.\n\n");
print_usage ();
printf
("\nOptions:\n"
" -w, --warning=WLOAD1,WLOAD5,WLOAD15\n"
" Exit with WARNING status if load average exceeds WLOADn\n"
" -c, --critical=CLOAD1,CLOAD5,CLOAD15\n"
" Exit with CRITICAL status if load average exceed CLOADn\n"
" -h, --help\n"
" Print detailed help screen\n"
" -V, --version\n"
" Print version information\n\n"
"the load average format is the same used by \"uptime\" and \"w\"\n\n");
support ();
}
Reference in a new issue View git blame Copy permalink