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-rw-r--r--plugins/check_mrtg.c385
1 files changed, 385 insertions, 0 deletions
diff --git a/plugins/check_mrtg.c b/plugins/check_mrtg.c
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+/*****************************************************************************
+*
+* Monitoring check_mrtg plugin
+*
+* License: GPL
+* Copyright (c) 1999-2007 Monitoring Plugins Development Team
+*
+* Description:
+*
+* This file contains the check_mrtg plugin
+*
+* This plugin will check either the average or maximum value of one of the
+* two variables recorded in an MRTG log file.
+*
+*
+* 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_mrtg";
+const char *copyright = "1999-2007";
+const char *email = "devel@monitoring-plugins.org";
+
+#include "common.h"
+#include "utils.h"
+
+int process_arguments (int, char **);
+int validate_arguments (void);
+void print_help (void);
+void print_usage (void);
+
+char *log_file = NULL;
+int expire_minutes = 0;
+int use_average = TRUE;
+int variable_number = -1;
+unsigned long value_warning_threshold = 0L;
+unsigned long value_critical_threshold = 0L;
+char *label;
+char *units;
+
+int
+main (int argc, char **argv)
+{
+ int result = STATE_OK;
+ FILE *fp;
+ int line;
+ char input_buffer[MAX_INPUT_BUFFER];
+ char *temp_buffer;
+ time_t current_time;
+ time_t timestamp = 0L;
+ unsigned long average_value_rate = 0L;
+ unsigned long maximum_value_rate = 0L;
+ unsigned long rate = 0L;
+
+ setlocale (LC_ALL, "");
+ bindtextdomain (PACKAGE, LOCALEDIR);
+ textdomain (PACKAGE);
+
+ /* Parse extra opts if any */
+ argv=np_extra_opts (&argc, argv, progname);
+
+ if (process_arguments (argc, argv) == ERROR)
+ usage4 (_("Could not parse arguments\n"));
+
+ /* open the MRTG log file for reading */
+ fp = fopen (log_file, "r");
+ if (fp == NULL) {
+ printf (_("Unable to open MRTG log file\n"));
+ return STATE_UNKNOWN;
+ }
+
+ line = 0;
+ while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, fp)) {
+
+ line++;
+
+ /* skip the first line of the log file */
+ if (line == 1)
+ continue;
+
+ /* break out of read loop if we've passed the number of entries we want to read */
+ if (line > 2)
+ break;
+
+ /* grab the timestamp */
+ temp_buffer = strtok (input_buffer, " ");
+ timestamp = strtoul (temp_buffer, NULL, 10);
+
+ /* grab the average value 1 rate */
+ temp_buffer = strtok (NULL, " ");
+ if (variable_number == 1)
+ average_value_rate = strtoul (temp_buffer, NULL, 10);
+
+ /* grab the average value 2 rate */
+ temp_buffer = strtok (NULL, " ");
+ if (variable_number == 2)
+ average_value_rate = strtoul (temp_buffer, NULL, 10);
+
+ /* grab the maximum value 1 rate */
+ temp_buffer = strtok (NULL, " ");
+ if (variable_number == 1)
+ maximum_value_rate = strtoul (temp_buffer, NULL, 10);
+
+ /* grab the maximum value 2 rate */
+ temp_buffer = strtok (NULL, " ");
+ if (variable_number == 2)
+ maximum_value_rate = strtoul (temp_buffer, NULL, 10);
+ }
+
+ /* close the log file */
+ fclose (fp);
+
+ /* if we couldn't read enough data, return an unknown error */
+ if (line <= 2) {
+ printf (_("Unable to process MRTG log file\n"));
+ return STATE_UNKNOWN;
+ }
+
+ /* make sure the MRTG data isn't too old */
+ time (&current_time);
+ if (expire_minutes > 0
+ && (current_time - timestamp) > (expire_minutes * 60)) {
+ printf (_("MRTG data has expired (%d minutes old)\n"),
+ (int) ((current_time - timestamp) / 60));
+ return STATE_WARNING;
+ }
+
+ /* else check the incoming/outgoing rates */
+ if (use_average == TRUE)
+ rate = average_value_rate;
+ else
+ rate = maximum_value_rate;
+
+ if (rate > value_critical_threshold)
+ result = STATE_CRITICAL;
+ else if (rate > value_warning_threshold)
+ result = STATE_WARNING;
+
+ printf("%s. %s = %lu %s|%s\n",
+ (use_average == TRUE) ? _("Avg") : _("Max"),
+ label, rate, units,
+ perfdata(label, (long) rate, units,
+ (int) value_warning_threshold, (long) value_warning_threshold,
+ (int) value_critical_threshold, (long) value_critical_threshold,
+ 0, 0, 0, 0));
+
+ return result;
+}
+
+
+
+/* process command-line arguments */
+int
+process_arguments (int argc, char **argv)
+{
+ int c;
+
+ int option = 0;
+ static struct option longopts[] = {
+ {"logfile", required_argument, 0, 'F'},
+ {"expires", required_argument, 0, 'e'},
+ {"aggregation", required_argument, 0, 'a'},
+ {"variable", required_argument, 0, 'v'},
+ {"critical", required_argument, 0, 'c'},
+ {"warning", required_argument, 0, 'w'},
+ {"label", required_argument, 0, 'l'},
+ {"units", required_argument, 0, 'u'},
+ {"variable", required_argument, 0, 'v'},
+ {"version", no_argument, 0, 'V'},
+ {"help", no_argument, 0, 'h'},
+ {0, 0, 0, 0}
+ };
+
+ if (argc < 2)
+ return ERROR;
+
+ for (c = 1; c < argc; c++) {
+ if (strcmp ("-to", argv[c]) == 0)
+ strcpy (argv[c], "-t");
+ else if (strcmp ("-wt", argv[c]) == 0)
+ strcpy (argv[c], "-w");
+ else if (strcmp ("-ct", argv[c]) == 0)
+ strcpy (argv[c], "-c");
+ }
+
+ while (1) {
+ c = getopt_long (argc, argv, "hVF:e:a:v:c:w:l:u:", longopts,
+ &option);
+
+ if (c == -1 || c == EOF)
+ break;
+
+ switch (c) {
+ case 'F': /* input file */
+ log_file = optarg;
+ break;
+ case 'e': /* ups name */
+ expire_minutes = atoi (optarg);
+ break;
+ case 'a': /* port */
+ if (!strcmp (optarg, "MAX"))
+ use_average = FALSE;
+ else
+ use_average = TRUE;
+ break;
+ case 'v':
+ variable_number = atoi (optarg);
+ if (variable_number < 1 || variable_number > 2)
+ usage4 (_("Invalid variable number"));
+ break;
+ case 'w': /* critical time threshold */
+ value_warning_threshold = strtoul (optarg, NULL, 10);
+ break;
+ case 'c': /* warning time threshold */
+ value_critical_threshold = strtoul (optarg, NULL, 10);
+ break;
+ case 'l': /* label */
+ label = optarg;
+ break;
+ case 'u': /* timeout */
+ units = optarg;
+ break;
+ case 'V': /* version */
+ print_revision (progname, NP_VERSION);
+ exit (STATE_UNKNOWN);
+ case 'h': /* help */
+ print_help ();
+ exit (STATE_UNKNOWN);
+ case '?': /* help */
+ usage5 ();
+ }
+ }
+
+ c = optind;
+ if (log_file == NULL && argc > c) {
+ log_file = argv[c++];
+ }
+
+ if (expire_minutes <= 0 && argc > c) {
+ if (is_intpos (argv[c]))
+ expire_minutes = atoi (argv[c++]);
+ else
+ die (STATE_UNKNOWN,
+ _("%s is not a valid expiration time\nUse '%s -h' for additional help\n"),
+ argv[c], progname);
+ }
+
+ if (argc > c && strcmp (argv[c], "MAX") == 0) {
+ use_average = FALSE;
+ c++;
+ }
+ else if (argc > c && strcmp (argv[c], "AVG") == 0) {
+ use_average = TRUE;
+ c++;
+ }
+
+ if (argc > c && variable_number == -1) {
+ variable_number = atoi (argv[c++]);
+ if (variable_number < 1 || variable_number > 2) {
+ printf ("%s :", argv[c]);
+ usage (_("Invalid variable number\n"));
+ }
+ }
+
+ if (argc > c && value_warning_threshold == 0) {
+ value_warning_threshold = strtoul (argv[c++], NULL, 10);
+ }
+
+ if (argc > c && value_critical_threshold == 0) {
+ value_critical_threshold = strtoul (argv[c++], NULL, 10);
+ }
+
+ if (argc > c && strlen (label) == 0) {
+ label = argv[c++];
+ }
+
+ if (argc > c && strlen (units) == 0) {
+ units = argv[c++];
+ }
+
+ return validate_arguments ();
+}
+
+int
+validate_arguments (void)
+{
+ if (variable_number == -1)
+ usage4 (_("You must supply the variable number"));
+
+ if (label == NULL)
+ label = strdup ("value");
+
+ if (units == NULL)
+ units = strdup ("");
+
+ return OK;
+}
+
+
+
+void
+print_help (void)
+{
+ print_revision (progname, NP_VERSION);
+
+ printf ("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n");
+ printf (COPYRIGHT, copyright, email);
+
+ printf ("%s\n", _("This plugin will check either the average or maximum value of one of the"));
+ printf ("%s\n", _("two variables recorded in an MRTG log file."));
+
+ printf ("\n\n");
+
+ print_usage ();
+
+ printf (UT_HELP_VRSN);
+ printf (UT_EXTRA_OPTS);
+
+ printf (" %s\n", "-F, --logfile=FILE");
+ printf (" %s\n", _("The MRTG log file containing the data you want to monitor"));
+ printf (" %s\n", "-e, --expires=MINUTES");
+ printf (" %s\n", _("Minutes before MRTG data is considered to be too old"));
+ printf (" %s\n", "-a, --aggregation=AVG|MAX");
+ printf (" %s\n", _("Should we check average or maximum values?"));
+ printf (" %s\n", "-v, --variable=INTEGER");
+ printf (" %s\n", _("Which variable set should we inspect? (1 or 2)"));
+ printf (" %s\n", "-w, --warning=INTEGER");
+ printf (" %s\n", _("Threshold value for data to result in WARNING status"));
+ printf (" %s\n", "-c, --critical=INTEGER");
+ printf (" %s\n", _("Threshold value for data to result in CRITICAL status"));
+ printf (" %s\n", "-l, --label=STRING");
+ printf (" %s\n", _("Type label for data (Examples: Conns, \"Processor Load\", In, Out)"));
+ printf (" %s\n", "-u, --units=STRING");
+ printf (" %s\n", _("Option units label for data (Example: Packets/Sec, Errors/Sec,"));
+ printf (" %s\n", _("\"Bytes Per Second\", \"%% Utilization\")"));
+
+ printf ("\n");
+ printf (" %s\n", _("If the value exceeds the <vwl> threshold, a WARNING status is returned. If"));
+ printf (" %s\n", _("the value exceeds the <vcl> threshold, a CRITICAL status is returned. If"));
+ printf (" %s\n", _("the data in the log file is older than <expire_minutes> old, a WARNING"));
+ printf (" %s\n", _("status is returned and a warning message is printed."));
+
+ printf ("\n");
+ printf (" %s\n", _("This plugin is useful for monitoring MRTG data that does not correspond to"));
+ printf (" %s\n", _("bandwidth usage. (Use the check_mrtgtraf plugin for monitoring bandwidth)."));
+ printf (" %s\n", _("It can be used to monitor any kind of data that MRTG is monitoring - errors,"));
+ printf (" %s\n", _("packets/sec, etc. I use MRTG in conjunction with the Novell NLM that allows"));
+ printf (" %s\n", _("me to track processor utilization, user connections, drive space, etc and"));
+ printf (" %s\n\n", _("this plugin works well for monitoring that kind of data as well."));
+
+ printf ("%s\n", _("Notes:"));
+ printf (" %s\n", _("- This plugin only monitors one of the two variables stored in the MRTG log"));
+ printf (" %s\n", _("file. If you want to monitor both values you will have to define two"));
+ printf (" %s\n", _("commands with different values for the <variable> argument. Of course,"));
+ printf (" %s\n", _("you can always hack the code to make this plugin work for you..."));
+ printf (" %s\n", _("- MRTG stands for the Multi Router Traffic Grapher. It can be downloaded from"));
+ printf (" %s\n", "http://ee-staff.ethz.ch/~oetiker/webtools/mrtg/mrtg.html");
+
+ printf (UT_SUPPORT);
+}
+
+
+
+/* original command line:
+ <log_file> <expire_minutes> <AVG|MAX> <variable> <vwl> <vcl> <label> [units] */
+
+void
+print_usage (void)
+{
+ printf ("%s\n", _("Usage:"));
+ printf ("%s -F log_file -a <AVG | MAX> -v variable -w warning -c critical\n",progname);
+ printf ("[-l label] [-u units] [-e expire_minutes] [-t timeout] [-v]\n");
+}
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