r1604 - in trunk/varnish-tools: . nagios

[cecilihf at projects.linpro.no]

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);
+}