Mailing List Archive

Author: cecilihf
Date: 2007-07-02 09:14:53 +0200 (Mon, 02 Jul 2007)
New Revision: 1604

Added:
trunk/varnish-tools/nagios/
trunk/varnish-tools/nagios/Makefile
trunk/varnish-tools/nagios/check_varnish.c
Log:
Added nagios plugin for varnish. It is very basic, and still needs some more work.
All parameters shown with the use of varnishstat -1 can be monitored.


Added: trunk/varnish-tools/nagios/Makefile
===================================================================
--- trunk/varnish-tools/nagios/Makefile (rev 0)
+++ trunk/varnish-tools/nagios/Makefile 2007-07-02 07:14:53 UTC (rev 1604)
@@ -0,0 +1,7 @@
+CFLAGS = -I ../../varnish-cache/include -O2 -Wall -pedantic -std=c99 -D_GNU_SOURCE
+LDFLAGS = -L /opt/varnish/lib -lvarnishapi
+
+all: check_varnish
+
+clean:
+ -rm check_varnish
\ No newline at end of file

Added: trunk/varnish-tools/nagios/check_varnish.c
===================================================================
--- trunk/varnish-tools/nagios/check_varnish.c (rev 0)
+++ trunk/varnish-tools/nagios/check_varnish.c 2007-07-02 07:14:53 UTC (rev 1604)
@@ -0,0 +1,162 @@
+/*-
+ * Copyright (c) 2006-2007 Linpro AS
+ * All rights reserved.
+ *
+ * Author: Cecilie Fritzvold <cecilihf at linpro.no>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id$
+ *
+ * Nagios plugin for Varnish
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "shmlog.h"
+#include "varnishapi.h"
+
+
+
+static int
+check_treshold(int value, int warn, int crit, int less)
+{
+ if (!less) {
+ if (value < warn)
+ return 0;
+ else if (value < crit)
+ return 1;
+ }
+ else {
+ if (value > warn)
+ return 0;
+ else if (value > crit)
+ return 1;
+ }
+ return 2;
+
+}
+
+static void
+message_and_exit(int level, int value, char *info)
+{
+ if (level == 0)
+ printf("OK: ");
+ else if (level == 1)
+ printf("Warning: ");
+ else if (level == 2)
+ printf("Critical: ");
+ else
+ printf("Uknown: ");
+
+ printf("%d %s\n", value, info);
+ exit(level);
+}
+
+static void
+check_stats(struct varnish_stats *VSL_stats, char *param, int w, int c, int less)
+{
+#define MAC_STAT(n, t, f, d) \
+ do { \
+ intmax_t ju = VSL_stats->n; \
+ int level; \
+ if (!strcmp(param, #n)) { \
+ level = check_treshold(ju, w, c, less); \
+ message_and_exit(level, ju, d); \
+ } \
+ } while (0);
+#include "stat_field.h"
+#undef MAC_STAT
+}
+
+static void
+help(void)
+{
+ fprintf(stderr, "usage: check_varnish -p param_name -c N -w N [-l] [-n varnish_name] [-v]\n"
+ "Valid options:\n"
+ "-c N\t\t warn as critical at treshold N\n"
+ "-l\t\t specify that values should be less than tresholds for warnings to be issued\n"
+ "-n varnish_name\t specify varnish instance name\n"
+ "-p param_name\t specify the parameter to check. See valid parameters\n"
+ "-v\t\t print verbose output. Can be specified up to three times\n"
+ "-w N\t\t warn as warning at treshold N\n"
+ );
+ exit(0);
+}
+
+static void
+usage(void)
+{
+ fprintf(stderr, "usage: check_varnish -p param_name -c N -w N [-l] [-n varnish_name] [-v]\n");
+ exit(3);
+}
+
+
+int
+main(int argc, char **argv)
+{
+ int c;
+ struct varnish_stats *VSL_stats;
+ int critical = 0, warning = 0;
+ int verbose = 0;
+ const char *n_arg = NULL;
+ char *param = NULL;
+ int less = 0;
+
+ while ((c = getopt(argc, argv, "c:hln:p:vw:")) != -1) {
+ switch (c) {
+ case 'c':
+ critical = atoi(optarg);
+ break;
+ case 'h':
+ help();
+ case 'l':
+ less = 1;
+ break;
+ case 'n':
+ n_arg = optarg;
+ break;
+ case 'p':
+ param = strdup(optarg);
+ break;
+ case 'v':
+ verbose++;
+ break;
+ case 'w':
+ warning = atoi(optarg);
+ break;
+ default:
+ usage();
+ }
+ }
+
+ if ((VSL_stats = VSL_OpenStats(n_arg)) == NULL)
+ exit(1);
+
+ check_stats(VSL_stats, param, warning, critical, less);
+
+ exit(0);
+}