Alert on amount of time a slave is behind (Steven Kreuzer)

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1324 f882894a-f735-0410-b71e-b25c423dba1c

2 files changed, 71 insertions, 21 deletions

diff --git a/plugins/check_mysql.c b/plugins/check_mysql.c
index 45f86a9c..92ac7ff0 100644
--- a/plugins/check_mysql.c
+++ b/plugins/check_mysql.c
@@ -6,7 +6,7 @@
 * License: GPL
 * Copyright (c) 1999 Didi Rieder (adrieder@sbox.tu-graz.ac.at)
 *  portions (c) 2000 Karl DeBisschop (kdebisschop@users.sourceforge.net)
-* 
+*
 * $Id$
 *
 * Description:
@@ -16,10 +16,10 @@
 
 const char *progname = "check_mysql";
 const char *revision = "$Revision$";
-const char *copyright = "1999-2004";
+const char *copyright = "1999-2006";
 const char *email = "nagiosplug-devel@lists.sourceforge.net";
 
-#define SLAVERESULTSIZE 40
+#define SLAVERESULTSIZE 70
 
 #include "common.h"
 #include "utils.h"
@@ -33,15 +33,16 @@ char *db_host = NULL;
 char *db_pass = NULL;
 char *db = NULL;
 unsigned int db_port = MYSQL_PORT;
-int check_slave = 0;
+int check_slave = 0, warn_sec = 0, crit_sec = 0;
+int verbose = 0;
+
+thresholds *my_threshold = NULL;
 
 int process_arguments (int, char **);
 int validate_arguments (void);
 void print_help (void);
 void print_usage (void);
 
-
-
 int
 main (int argc, char **argv)
 {
@@ -137,37 +138,60 @@ main (int argc, char **argv)
 
                 } else {
                         /* mysql 4.x.x */
-                        int slave_io_field = -1 , slave_sql_field = -1, i, num_fields;
+                        int slave_io_field = -1 , slave_sql_field = -1, seconds_behind_field = -1, i, num_fields;
                         MYSQL_FIELD* fields;
 
                         num_fields = mysql_num_fields(res);
                         fields = mysql_fetch_fields(res);
-                        for(i = 0; i < num_fields; i++)
-                        {
-                                if (0 == strcmp(fields[i].name, "Slave_IO_Running"))
-                                {
+                        for(i = 0; i < num_fields; i++) {
+                                if (strcmp(fields[i].name, "Slave_IO_Running") == 0) {
                                         slave_io_field = i;
                                         continue;
                                 }
-                                if (0 == strcmp(fields[i].name, "Slave_SQL_Running"))
-                                {
+                                if (strcmp(fields[i].name, "Slave_SQL_Running") == 0) {
                                         slave_sql_field = i;
                                         continue;
                                 }
+                                if (strcmp(fields[i].name, "Seconds_Behind_Master") == 0) {
+                                        seconds_behind_field = i;
+                                        continue;
+                                }
                         }
-                        if ((slave_io_field < 0) || (slave_sql_field < 0) || (num_fields == 0))
-                        {
+                        if ((slave_io_field < 0) || (slave_sql_field < 0) || (num_fields == 0)) {
                                 mysql_free_result (res);
                                 mysql_close (&mysql);
                                 die (STATE_CRITICAL, "Slave status unavailable\n");
                         }
-                         
-                        snprintf (slaveresult, SLAVERESULTSIZE, "Slave IO: %s Slave SQL: %s", row[slave_io_field], row[slave_sql_field]);
+                        
+                        snprintf (slaveresult, SLAVERESULTSIZE, "Slave IO: %s Slave SQL: %s Seconds Behind Master: %s", row[slave_io_field], row[slave_sql_field], row[seconds_behind_field]);
                         if (strcmp (row[slave_io_field], "Yes") != 0 || strcmp (row[slave_sql_field], "Yes") != 0) {
                                 mysql_free_result (res);
                                 mysql_close (&mysql);
                                 die (STATE_CRITICAL, "%s\n", slaveresult);
                         }
+
+                        if (verbose >=3) {
+                                if (seconds_behind_field == -1) {
+                                        printf("seconds_behind_field not found\n");
+                                } else {
+                                        printf ("seconds_behind_field(index %d)=%s\n", seconds_behind_field, row[seconds_behind_field]);
+                                }
+                        }
+
+                        if ((seconds_behind_field != -1) && (strcmp (row[seconds_behind_field], "NULL") != 0)) {
+                                double value = atof(row[seconds_behind_field]);
+                                int status;
+
+                                status = get_status(value, my_threshold);
+
+                                if (status == STATE_WARNING) {
+                                        printf("SLOW_SLAVE %s: %s\n", _("WARNING"), slaveresult);
+                                        exit(STATE_WARNING);
+                                } else if (status == STATE_CRITICAL) {
+                                        printf("SLOW_SLAVE %s: %s\n", _("CRITICAL"), slaveresult);
+                                        exit(STATE_CRITICAL);
+                                }
+                        }
                 }
 
                 /* free the result */
@@ -193,6 +217,8 @@ int
 process_arguments (int argc, char **argv)
 {
         int c;
+        char *warning = NULL;
+        char *critical = NULL;
 
         int option = 0;
         static struct option longopts[] = {
@@ -201,6 +227,8 @@ process_arguments (int argc, char **argv)
                 {"username", required_argument, 0, 'u'},
                 {"password", required_argument, 0, 'p'},
                 {"port", required_argument, 0, 'P'},
+                {"critical", required_argument, 0, 'c'},
+                {"warning", required_argument, 0, 'w'},
                 {"check-slave", no_argument, 0, 'S'},
                 {"verbose", no_argument, 0, 'v'},
                 {"version", no_argument, 0, 'V'},
@@ -212,7 +240,7 @@ process_arguments (int argc, char **argv)
                 return ERROR;
 
         while (1) {
-                c = getopt_long (argc, argv, "hVSP:p:u:d:H:", longopts, &option);
+                c = getopt_long (argc, argv, "hvVSP:p:u:d:H:c:w:", longopts, &option);
 
                 if (c == -1 || c == EOF)
                         break;
@@ -241,12 +269,21 @@ process_arguments (int argc, char **argv)
                 case 'S':
                         check_slave = 1;                                                        /* check-slave */
                         break;
+                case 'w':
+                        warning = optarg;
+                        break;
+                case 'c':
+                        critical = optarg;
+                        break;
                 case 'V':                                                                       /* version */
                         print_revision (progname, revision);
                         exit (STATE_OK);
                 case 'h':                                                                       /* help */
                         print_help ();
                         exit (STATE_OK);
+                case 'v':
+                        verbose++;
+                        break;
                 case '?':                                                                       /* help */
                         usage2 (_("Unknown argument"), optarg);
                 }
@@ -254,6 +291,8 @@ process_arguments (int argc, char **argv)
 
         c = optind;
 
+        set_thresholds(&my_threshold, warning, critical);
+
         while ( argc > c ) {
 
                 if (strlen(db_host) == 0)
@@ -326,7 +365,11 @@ print_help (void)
    ==> IMPORTANT: THIS FORM OF AUTHENTICATION IS NOT SECURE!!! <==\n\
    Your clear-text password will be visible as a process table entry\n\
  -S, --check-slave\n\
-   Check if the slave thread is running properly.\n"));
+   Check if the slave thread is running properly.\n\
+ -w, --warning\n\
+   Exit with WARNING status if slave server is more then INTEGER seconds behind master\n\
+ -c, --critical\n\
+   Exit with CRITICAL status if slave server is more then INTEGER seconds behind master\n"));
 
         printf (_("\n\
 There are no required arguments. By default, the local database with\n\
diff --git a/plugins/t/check_mysql.t b/plugins/t/check_mysql.t
index e961106b..78413c6e 100644
--- a/plugins/t/check_mysql.t
+++ b/plugins/t/check_mysql.t
@@ -19,7 +19,7 @@ use vars qw($tests);
 
 plan skip_all => "check_mysql not compiled" unless (-x "check_mysql");
 
-plan tests => 7;
+plan tests => 10;
 
 my $bad_login_output = '/Access denied for user /';
 my $mysqlserver = getTestParameter( 
@@ -58,10 +58,17 @@ SKIP: {
 }
 
 SKIP: {
-        skip "No mysql server with slaves defined", 2 unless $with_slave;
+        skip "No mysql server with slaves defined", 5 unless $with_slave;
         $result = NPTest->testCmd("./check_mysql -H $with_slave $with_slave_login");
         cmp_ok( $result->return_code, '==', 0, "Login okay");
 
         $result = NPTest->testCmd("./check_mysql -S -H $with_slave $with_slave_login");
         cmp_ok( $result->return_code, "==", 0, "Slaves okay" );
+
+        $result = NPTest->testCmd("./check_mysql -S -H $with_slave $with_slave_login -w 60");
+        cmp_ok( $result->return_code, '==', 0, 'Slaves are not > 60 seconds behind');
+
+        $result = NPTest->testCmd("./check_mysql -S -H $with_slave $with_slave_login -w 60:");
+        cmp_ok( $result->return_code, '==', 1, 'Alert warning if < 60 seconds behind');
+        like( $result->output, "/^SLOW_SLAVE WARNING:/", "Output okay");
 }