![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/plugins/check_load.c b/plugins/check_load.c
index 58113817008618dfb657e8da9546fb4e8b10d41c..450a4fc3bc3afa99c9017b12bb447629c0c6e2e5 100644 (file)
--- a/plugins/check_load.c
+++ b/plugins/check_load.c
-/******************************************************************************
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-******************************************************************************/
+/*****************************************************************************
+*
+* Nagios check_load plugin
+*
+* License: GPL
+* Copyright (c) 1999-2007 Nagios Plugins Development Team
+*
+* Description:
+*
+* This file contains the check_load plugin
+*
+* This plugin tests the current system load average.
+*
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program. If not, see <http://www.gnu.org/licenses/>.
+*
+*
+*****************************************************************************/
const char *progname = "check_load";
-const char *revision = "$Revision$";
-const char *copyright = "1999-2003";
+const char *copyright = "1999-2007";
const char *email = "nagiosplug-devel@lists.sourceforge.net";
#include "common.h"
#endif /* !defined LOADAVG_1MIN */
-int process_arguments (int argc, char **argv);
-int validate_arguments (void);
+static int process_arguments (int argc, char **argv);
+static int validate_arguments (void);
void print_help (void);
void print_usage (void);
-float wload1 = -1, wload5 = -1, wload15 = -1;
-float cload1 = -1, cload5 = -1, cload15 = -1;
+/* strictly for pretty-print usage in loops */
+static const int nums[3] = { 1, 5, 15 };
+
+/* provide some fairly sane defaults */
+double wload[3] = { 0.0, 0.0, 0.0 };
+double cload[3] = { 0.0, 0.0, 0.0 };
+#define la1 la[0]
+#define la5 la[1]
+#define la15 la[2]
char *status_line;
+int take_into_account_cpus = 0;
+static void
+get_threshold(char *arg, double *th)
+{
+ size_t i, n;
+ int valid = 0;
+ char *str = arg, *p;
+
+ n = strlen(arg);
+ for(i = 0; i < 3; i++) {
+ th[i] = strtod(str, &p);
+ if(p == str) break;
+
+ valid = 1;
+ str = p + 1;
+ if(n <= (size_t)(str - arg)) break;
+ }
+ /* empty argument or non-floatish, so warn about it and die */
+ if(!i && !valid) usage (_("Warning threshold must be float or float triplet!\n"));
+ if(i != 2) {
+ /* one or more numbers were given, so fill array with last
+ * we got (most likely to NOT produce the least expected result) */
+ for(n = i; n < 3; n++) th[n] = th[i];
+ }
+}
-\f
int
main (int argc, char **argv)
{
-#if HAVE_GETLOADAVG==1
int result;
+ int i;
+ long numcpus;
+
double la[3] = { 0.0, 0.0, 0.0 }; /* NetBSD complains about unitialized arrays */
-#else
-# if HAVE_PROC_LOADAVG==1
- FILE *fp;
- char input_buffer[MAX_INPUT_BUFFER];
- char *tmp_ptr;
-# else
- int result;
+#ifndef HAVE_GETLOADAVG
char input_buffer[MAX_INPUT_BUFFER];
+# ifdef HAVE_PROC_LOADAVG
+ FILE *fp;
+ char *str, *next;
# endif
#endif
- float la1, la5, la15;
-
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
+ setlocale(LC_NUMERIC, "POSIX");
+
+ /* Parse extra opts if any */
+ argv = np_extra_opts (&argc, argv, progname);
if (process_arguments (argc, argv) == ERROR)
- usage ("failed processing arguments\n");
+ usage4 (_("Could not parse arguments"));
-#if HAVE_GETLOADAVG==1
+#ifdef HAVE_GETLOADAVG
result = getloadavg (la, 3);
- if (result == -1)
+ if (result != 3)
return STATE_UNKNOWN;
- la1 = la[LOADAVG_1MIN];
- la5 = la[LOADAVG_5MIN];
- la15 = la[LOADAVG_15MIN];
#else
-# if HAVE_PROC_LOADAVG==1
+# ifdef HAVE_PROC_LOADAVG
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);
+ str = (char *)input_buffer;
+ for(i = 0; i < 3; i++) {
+ la[i] = strtod(str, &next);
+ str = next;
+ }
}
fclose (fp);
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);
+ sscanf (input_buffer, "%*[^l]load average: %lf, %lf, %lf", &la1, &la5, &la15);
result = spclose (child_process);
if (result) {
# endif
#endif
- if ((la1 < 0.0) || (la5 < 0.0) || (la15 < 0.0)) {
-#if HAVE_GETLOADAVG==1
+ if (take_into_account_cpus == 1) {
+ if ((numcpus = GET_NUMBER_OF_CPUS()) > 0) {
+ la[0] = la[0] / numcpus;
+ la[1] = la[1] / numcpus;
+ la[2] = la[2] / numcpus;
+ }
+ }
+ if ((la[0] < 0.0) || (la[1] < 0.0) || (la[2] < 0.0)) {
+#ifdef HAVE_GETLOADAVG
printf (_("Error in getloadavg()\n"));
#else
-# if HAVE_PROC_LOADAVG==1
+# ifdef HAVE_PROC_LOADAVG
printf (_("Error processing %s\n"), PROC_LOADAVG);
# else
printf (_("Error processing %s\n"), PATH_TO_UPTIME);
#endif
return STATE_UNKNOWN;
}
+
+ /* we got this far, so assume OK until we've measured */
+ result = STATE_OK;
+
asprintf(&status_line, _("load average: %.2f, %.2f, %.2f"), la1, la5, la15);
- if ((la1 >= cload1) || (la5 >= cload5) || (la15 >= cload15)) {
- printf(_("CRITICAL - %s\n"), status_line);
- return STATE_CRITICAL;
- }
- if ((la1 >= wload1) || (la5 >= wload5) || (la15 >= wload15)) {
- printf (_("WARNING - %s\n"), status_line);
- return STATE_WARNING;
- }
- printf (_("OK - %s\n"), status_line);
- return STATE_OK;
-}
+ for(i = 0; i < 3; i++) {
+ if(la[i] > cload[i]) {
+ result = STATE_CRITICAL;
+ break;
+ }
+ else if(la[i] > wload[i]) result = STATE_WARNING;
+ }
+ printf("%s - %s|", state_text(result), status_line);
+ for(i = 0; i < 3; i++)
+ printf("load%d=%.3f;%.3f;%.3f;0; ", nums[i], la[i], wload[i], cload[i]);
+ putchar('\n');
+ return result;
+}
-\f
/* process command-line arguments */
-int
+static int
process_arguments (int argc, char **argv)
{
int c = 0;
static struct option longopts[] = {
{"warning", required_argument, 0, 'w'},
{"critical", required_argument, 0, 'c'},
+ {"percpu", no_argument, 0, 'r'},
{"version", no_argument, 0, 'V'},
{"help", no_argument, 0, 'h'},
{0, 0, 0, 0}
return ERROR;
while (1) {
- c = getopt_long (argc, argv, "Vhc:w:", longopts, &option);
+ c = getopt_long (argc, argv, "Vhrc:w:", longopts, &option);
if (c == -1 || c == EOF)
break;
switch (c) {
- case 'w': /* warning time threshold */
- if (is_intnonneg (optarg)) {
- wload1 = atof (optarg);
- wload5 = atof (optarg);
- wload15 = atof (optarg);
- break;
- }
- else if (strstr (optarg, ",") &&
- sscanf (optarg, "%f,%f,%f", &wload1, &wload5, &wload15) == 3)
- 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 'w': /* warning time threshold */
+ get_threshold(optarg, wload);
break;
- case 'c': /* critical time threshold */
- if (is_intnonneg (optarg)) {
- cload1 = atof (optarg);
- cload5 = atof (optarg);
- cload15 = atof (optarg);
- break;
- }
- else if (strstr (optarg, ",") &&
- sscanf (optarg, "%f,%f,%f", &cload1, &cload5, &cload15) == 3)
- 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 'c': /* critical time threshold */
+ get_threshold(optarg, cload);
+ break;
+ case 'r': /* Divide load average by number of CPUs */
+ take_into_account_cpus = 1;
break;
case 'V': /* version */
- print_revision (progname, "$Revision$");
+ print_revision (progname, NP_VERSION);
exit (STATE_OK);
case 'h': /* help */
print_help ();
exit (STATE_OK);
case '?': /* help */
- usage (_("Invalid argument\n"));
+ usage5 ();
}
}
c = optind;
if (c == argc)
return validate_arguments ();
- if (wload1 < 0 && is_nonnegative (argv[c]))
- wload1 = atof (argv[c++]);
-
- if (c == argc)
- return validate_arguments ();
- if (cload1 < 0 && is_nonnegative (argv[c]))
- cload1 = atof (argv[c++]);
-
- if (c == argc)
- return validate_arguments ();
- if (wload5 < 0 && is_nonnegative (argv[c]))
- wload5 = atof (argv[c++]);
-
- if (c == argc)
- return validate_arguments ();
- if (cload5 < 0 && is_nonnegative (argv[c]))
- cload5 = atof (argv[c++]);
-
- if (c == argc)
- return validate_arguments ();
- if (wload15 < 0 && is_nonnegative (argv[c]))
- wload15 = atof (argv[c++]);
- if (c == argc)
- return validate_arguments ();
- if (cload15 < 0 && is_nonnegative (argv[c]))
- cload15 = atof (argv[c++]);
+ /* handle the case if both arguments are missing,
+ * but not if only one is given without -c or -w flag */
+ if(c - argc == 2) {
+ get_threshold(argv[c++], wload);
+ get_threshold(argv[c++], cload);
+ }
+ else if(c - argc == 1) {
+ get_threshold(argv[c++], cload);
+ }
return validate_arguments ();
}
-
-
-int
+static int
validate_arguments (void)
{
- if (wload1 < 0)
- usage (_("Warning threshold for 1-minute load average is not specified\n"));
- if (wload5 < 0)
- usage (_("Warning threshold for 5-minute load average is not specified\n"));
- if (wload15 < 0)
- usage (_("Warning threshold for 15-minute load average is not specified\n"));
- if (cload1 < 0)
- usage (_("Critical threshold for 1-minute load average is not specified\n"));
- if (cload5 < 0)
- usage (_("Critical threshold for 5-minute load average is not specified\n"));
- if (cload15 < 0)
- usage (_("Critical threshold for 15-minute load average is not specified\n"));
- if (wload1 > cload1)
- usage (_("Parameter inconsistency: 1-minute \"warning load\" greater than \"critical load\".\n"));
- if (wload5 > cload5)
- usage (_("Parameter inconsistency: 5-minute \"warning load\" greater than \"critical load\".\n"));
- if (wload15 > cload15)
- usage (_("Parameter inconsistency: 15-minute \"warning load\" greater than \"critical load\".\n"));
+ int i = 0;
+
+ /* match cload first, as it will give the most friendly error message
+ * if user hasn't given the -c switch properly */
+ for(i = 0; i < 3; i++) {
+ if(cload[i] < 0)
+ die (STATE_UNKNOWN, _("Critical threshold for %d-minute load average is not specified\n"), nums[i]);
+ if(wload[i] < 0)
+ die (STATE_UNKNOWN, _("Warning threshold for %d-minute load average is not specified\n"), nums[i]);
+ if(wload[i] > cload[i])
+ die (STATE_UNKNOWN, _("Parameter inconsistency: %d-minute \"warning load\" is greater than \"critical load\"\n"), nums[i]);
+ }
+
return OK;
}
-
-
-\f
void
print_help (void)
{
- print_revision (progname, revision);
+ print_revision (progname, NP_VERSION);
- printf (_("Copyright (c) 1999 Felipe Gustavo de Almeida <galmeida@linux.ime.usp.br>\n"));
- printf (_(COPYRIGHT), copyright, email);
+ printf ("Copyright (c) 1999 Felipe Gustavo de Almeida <galmeida@linux.ime.usp.br>\n");
+ printf (COPYRIGHT, copyright, email);
- printf (_("This plugin tests the current system load average.\n\n"));
+ printf (_("This plugin tests the current system load average."));
- print_usage ();
+ printf ("\n\n");
- printf (_(UT_HELP_VRSN));
+ print_usage ();
- printf (_("\
- -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\n\
-the load average format is the same used by \"uptime\" and \"w\"\n\n"));
+ printf (UT_HELP_VRSN);
+ printf (UT_EXTRA_OPTS);
+
+ printf (" %s\n", "-w, --warning=WLOAD1,WLOAD5,WLOAD15");
+ printf (" %s\n", _("Exit with WARNING status if load average exceeds WLOADn"));
+ printf (" %s\n", "-c, --critical=CLOAD1,CLOAD5,CLOAD15");
+ printf (" %s\n", _("Exit with CRITICAL status if load average exceed CLOADn"));
+ printf (" %s\n", _("the load average format is the same used by \"uptime\" and \"w\""));
+ printf (" %s\n", "-r, --percpu");
+ printf (" %s\n", _("Divide the load averages by the number of CPUs (when possible)"));
+
+#ifdef NP_EXTRA_OPTS
+ printf ("\n");
+ printf ("%s\n", _("Notes:"));
+ printf (UT_EXTRA_OPTS_NOTES);
+#endif
- printf (_(UT_SUPPORT));
+ printf (UT_SUPPORT);
}
void
print_usage (void)
{
- printf (_("Usage: %s -w WLOAD1,WLOAD5,WLOAD15 -c CLOAD1,CLOAD5,CLOAD15\n"),
- progname);
- printf (_(UT_HLP_VRS), progname, progname);
+ printf (_("Usage:"));
+ printf ("%s [-r] -w WLOAD1,WLOAD5,WLOAD15 -c CLOAD1,CLOAD5,CLOAD15\n", progname);
}