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.

git-svn-id: svn+ssh://projects.linpro.no/svn/varnish/trunk@1604 d4fa192b-c00b-0410-8231-f00ffab90ce4

diff --git a/varnish-tools/nagios/Makefile b/varnish-tools/nagios/Makefile
new file mode 100644 (file)
index 0000000..8b30df8
--- /dev/null
+++ b/varnish-tools/nagios/Makefile
@@ -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

diff --git a/varnish-tools/nagios/check_varnish.c b/varnish-tools/nagios/check_varnish.c
new file mode 100644 (file)
index 0000000..10bae82
--- /dev/null
+++ b/varnish-tools/nagios/check_varnish.c
@@ -0,0 +1,162 @@
+/*-
+ * Copyright (c) 2006-2007 Linpro AS
+ * All rights reserved.
+ *
+ * Author: Cecilie Fritzvold <cecilihf@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);
+}