1 files changed, 20 insertions, 2 deletions

diff --git a/plugins/check_mysql.c b/plugins/check_mysql.c
index 4f09e5f..216626b 100644
--- a/plugins/check_mysql.c
+++ b/plugins/check_mysql.c
@@ -42,6 +42,7 @@ const char *email = "devel@monitoring-plugins.org";
 #include "netutils.h"
 
 #include <mysql.h>
+#include <mysqld_error.h>
 #include <errmsg.h>
 
 char *db_user = NULL;
@@ -59,6 +60,7 @@ char *opt_file = NULL;
 char *opt_group = NULL;
 unsigned int db_port = MYSQL_PORT;
 int check_slave = 0, warn_sec = 0, crit_sec = 0;
+int ignore_auth = 0;
 int verbose = 0;
 
 static double warning_time = 0;
@@ -136,7 +138,16 @@ main (int argc, char **argv)
                 mysql_ssl_set(&mysql,key,cert,ca_cert,ca_dir,ciphers);
         /* establish a connection to the server and error checking */
         if (!mysql_real_connect(&mysql,db_host,db_user,db_pass,db,db_port,db_socket,0)) {
-                if (mysql_errno (&mysql) == CR_UNKNOWN_HOST)
+                if (ignore_auth && mysql_errno (&mysql) == ER_ACCESS_DENIED_ERROR)
+                {
+                        printf("MySQL OK - Version: %s (protocol %d)\n",
+                                mysql_get_server_info(&mysql),
+                                mysql_get_proto_info(&mysql)
+                        );
+                        mysql_close (&mysql);
+                        return STATE_OK;
+                }
+                else if (mysql_errno (&mysql) == CR_UNKNOWN_HOST)
                         die (STATE_WARNING, "%s\n", mysql_error (&mysql));
                 else if (mysql_errno (&mysql) == CR_VERSION_ERROR)
                         die (STATE_WARNING, "%s\n", mysql_error (&mysql));
@@ -341,6 +352,7 @@ process_arguments (int argc, char **argv)
                 {"critical", required_argument, 0, 'c'},
                 {"warning", required_argument, 0, 'w'},
                 {"check-slave", no_argument, 0, 'S'},
+                {"ignore-auth", no_argument, 0, 'n'},
                 {"verbose", no_argument, 0, 'v'},
                 {"version", no_argument, 0, 'V'},
                 {"help", no_argument, 0, 'h'},
@@ -357,7 +369,7 @@ process_arguments (int argc, char **argv)
                 return ERROR;
 
         while (1) {
-                c = getopt_long (argc, argv, "hlvVSP:p:u:d:H:s:c:w:a:k:C:D:L:f:g:", longopts, &option);
+                c = getopt_long (argc, argv, "hlvVnSP:p:u:d:H:s:c:w:a:k:C:D:L:f:g:", longopts, &option);
 
                 if (c == -1 || c == EOF)
                         break;
@@ -419,6 +431,9 @@ process_arguments (int argc, char **argv)
                 case 'S':
                         check_slave = 1;                                                        /* check-slave */
                         break;
+                case 'n':
+                        ignore_auth = 1;                                                        /* ignore-auth */
+                        break;
                 case 'w':
                         warning = optarg;
                         warning_time = strtod (warning, NULL);
@@ -506,6 +521,9 @@ print_help (void)
         printf (UT_EXTRA_OPTS);
 
   printf (UT_HOST_PORT, 'P', myport);
+  printf (" %s\n", "-n, --ignore-auth");
+  printf ("    %s\n", _("Ignore authentication failure and check for mysql connectivity only"));
+
   printf (" %s\n", "-s, --socket=STRING");
   printf ("    %s\n", _("Use the specified socket (has no effect if -H is used)"));