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authorJan Wagner <waja@cyconet.org>2013-09-30 22:47:08 (GMT)
committerJan Wagner <waja@cyconet.org>2014-07-28 20:13:02 (GMT)
commit2e8d440e73ac2b1875db5ecaf6df510fdcf6eb7a (patch)
treee6dc017c83e20719b740064aa7aebf49c75dee0b
parent98a670bf773b28868ff2d1c41daee4e7d497db4b (diff)
downloadmonitoring-plugins-2e8d440.tar.gz
check_mysql: ignore authentication failure
This patch allows checking if MySQL server is running without providing valid username and password. Similar to check_ssh plugin it returns MySQL server version string and protocol number. Example: check_mysql -n -H aaa.bbb.ccc.ddd MySQL OK - Version: 5.0.51a-24+lenny5 (protocol 10) This is useful for monitoring servers where one does not have administrator privileges or does not want to grant any privileges for the monitoring station. To enable this functionality new option --ignore-auth (-n) is added to check_mysql plugin. Thanks to Julius Kriukas Closes #1020 Closes #1178
-rw-r--r--THANKS.in1
-rw-r--r--plugins/check_mysql.c22
2 files changed, 21 insertions, 2 deletions
diff --git a/THANKS.in b/THANKS.in
index 6738ae7..b732e78 100644
--- a/THANKS.in
+++ b/THANKS.in
@@ -325,3 +325,4 @@ Andy Brist
325Mikael Falkvidd 325Mikael Falkvidd
326Patric Wust 326Patric Wust
327Neil Prockter 327Neil Prockter
328Julius Kriukas
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";
42#include "netutils.h" 42#include "netutils.h"
43 43
44#include <mysql.h> 44#include <mysql.h>
45#include <mysqld_error.h>
45#include <errmsg.h> 46#include <errmsg.h>
46 47
47char *db_user = NULL; 48char *db_user = NULL;
@@ -59,6 +60,7 @@ char *opt_file = NULL;
59char *opt_group = NULL; 60char *opt_group = NULL;
60unsigned int db_port = MYSQL_PORT; 61unsigned int db_port = MYSQL_PORT;
61int check_slave = 0, warn_sec = 0, crit_sec = 0; 62int check_slave = 0, warn_sec = 0, crit_sec = 0;
63int ignore_auth = 0;
62int verbose = 0; 64int verbose = 0;
63 65
64static double warning_time = 0; 66static double warning_time = 0;
@@ -136,7 +138,16 @@ main (int argc, char **argv)
136 mysql_ssl_set(&mysql,key,cert,ca_cert,ca_dir,ciphers); 138 mysql_ssl_set(&mysql,key,cert,ca_cert,ca_dir,ciphers);
137 /* establish a connection to the server and error checking */ 139 /* establish a connection to the server and error checking */
138 if (!mysql_real_connect(&mysql,db_host,db_user,db_pass,db,db_port,db_socket,0)) { 140 if (!mysql_real_connect(&mysql,db_host,db_user,db_pass,db,db_port,db_socket,0)) {
139 if (mysql_errno (&mysql) == CR_UNKNOWN_HOST) 141 if (ignore_auth && mysql_errno (&mysql) == ER_ACCESS_DENIED_ERROR)
142 {
143 printf("MySQL OK - Version: %s (protocol %d)\n",
144 mysql_get_server_info(&mysql),
145 mysql_get_proto_info(&mysql)
146 );
147 mysql_close (&mysql);
148 return STATE_OK;
149 }
150 else if (mysql_errno (&mysql) == CR_UNKNOWN_HOST)
140 die (STATE_WARNING, "%s\n", mysql_error (&mysql)); 151 die (STATE_WARNING, "%s\n", mysql_error (&mysql));
141 else if (mysql_errno (&mysql) == CR_VERSION_ERROR) 152 else if (mysql_errno (&mysql) == CR_VERSION_ERROR)
142 die (STATE_WARNING, "%s\n", mysql_error (&mysql)); 153 die (STATE_WARNING, "%s\n", mysql_error (&mysql));
@@ -341,6 +352,7 @@ process_arguments (int argc, char **argv)
341 {"critical", required_argument, 0, 'c'}, 352 {"critical", required_argument, 0, 'c'},
342 {"warning", required_argument, 0, 'w'}, 353 {"warning", required_argument, 0, 'w'},
343 {"check-slave", no_argument, 0, 'S'}, 354 {"check-slave", no_argument, 0, 'S'},
355 {"ignore-auth", no_argument, 0, 'n'},
344 {"verbose", no_argument, 0, 'v'}, 356 {"verbose", no_argument, 0, 'v'},
345 {"version", no_argument, 0, 'V'}, 357 {"version", no_argument, 0, 'V'},
346 {"help", no_argument, 0, 'h'}, 358 {"help", no_argument, 0, 'h'},
@@ -357,7 +369,7 @@ process_arguments (int argc, char **argv)
357 return ERROR; 369 return ERROR;
358 370
359 while (1) { 371 while (1) {
360 c = getopt_long (argc, argv, "hlvVSP:p:u:d:H:s:c:w:a:k:C:D:L:f:g:", longopts, &option); 372 c = getopt_long (argc, argv, "hlvVnSP:p:u:d:H:s:c:w:a:k:C:D:L:f:g:", longopts, &option);
361 373
362 if (c == -1 || c == EOF) 374 if (c == -1 || c == EOF)
363 break; 375 break;
@@ -419,6 +431,9 @@ process_arguments (int argc, char **argv)
419 case 'S': 431 case 'S':
420 check_slave = 1; /* check-slave */ 432 check_slave = 1; /* check-slave */
421 break; 433 break;
434 case 'n':
435 ignore_auth = 1; /* ignore-auth */
436 break;
422 case 'w': 437 case 'w':
423 warning = optarg; 438 warning = optarg;
424 warning_time = strtod (warning, NULL); 439 warning_time = strtod (warning, NULL);
@@ -506,6 +521,9 @@ print_help (void)
506 printf (UT_EXTRA_OPTS); 521 printf (UT_EXTRA_OPTS);
507 522
508 printf (UT_HOST_PORT, 'P', myport); 523 printf (UT_HOST_PORT, 'P', myport);
524 printf (" %s\n", "-n, --ignore-auth");
525 printf (" %s\n", _("Ignore authentication failure and check for mysql connectivity only"));
526
509 printf (" %s\n", "-s, --socket=STRING"); 527 printf (" %s\n", "-s, --socket=STRING");
510 printf (" %s\n", _("Use the specified socket (has no effect if -H is used)")); 528 printf (" %s\n", _("Use the specified socket (has no effect if -H is used)"));
511 529