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[nagiosplug.git] / plugins / check_mysql.c
1 /******************************************************************************
2 *
3 * CHECK_MYSQL.C
4 *
5 * Program: Mysql plugin for Nagios
6 * License: GPL
7 * Copyright (c) 1999 Didi Rieder (adrieder@sbox.tu-graz.ac.at)
8 *  portions (c) 2000 Karl DeBisschop (kdebisschop@users.sourceforge.net)
9 *
10 * $Id$
11 *
12 * Description:
13 *
14 * This plugin is for testing a mysql server.
15 ******************************************************************************/
17 const char *progname = "check_mysql";
18 const char *revision = "$Revision$";
19 const char *copyright = "1999-2006";
20 const char *email = "nagiosplug-devel@lists.sourceforge.net";
22 #define SLAVERESULTSIZE 70
24 #include "common.h"
25 #include "utils.h"
26 #include "netutils.h"
28 #include <mysql.h>
29 #include <errmsg.h>
31 char *db_user = NULL;
32 char *db_host = NULL;
33 char *db_pass = NULL;
34 char *db = NULL;
35 unsigned int db_port = MYSQL_PORT;
36 int check_slave = 0, warn_sec = 0, crit_sec = 0;
37 int verbose = 0;
39 thresholds *my_threshold = NULL;
41 int process_arguments (int, char **);
42 int validate_arguments (void);
43 void print_help (void);
44 void print_usage (void);
46 int
47 main (int argc, char **argv)
48 {
50         MYSQL mysql;
51         MYSQL_RES *res;
52         MYSQL_ROW row;
53         
54         /* should be status */
55         
56         char *result = NULL;
57         char *error = NULL;
58         char slaveresult[SLAVERESULTSIZE];
60         setlocale (LC_ALL, "");
61         bindtextdomain (PACKAGE, LOCALEDIR);
62         textdomain (PACKAGE);
64         if (process_arguments (argc, argv) == ERROR)
65                 usage4 (_("Could not parse arguments"));
67         /* initialize mysql  */
68         mysql_init (&mysql);
70         mysql_options(&mysql,MYSQL_READ_DEFAULT_GROUP,"client");
72         /* establish a connection to the server and error checking */
73         if (!mysql_real_connect(&mysql,db_host,db_user,db_pass,db,db_port,NULL,0)) {
74                 if (mysql_errno (&mysql) == CR_UNKNOWN_HOST)
75                         die (STATE_WARNING, "%s\n", mysql_error (&mysql));
76                 else if (mysql_errno (&mysql) == CR_VERSION_ERROR)
77                         die (STATE_WARNING, "%s\n", mysql_error (&mysql));
78                 else if (mysql_errno (&mysql) == CR_OUT_OF_MEMORY)
79                         die (STATE_WARNING, "%s\n", mysql_error (&mysql));
80                 else if (mysql_errno (&mysql) == CR_IPSOCK_ERROR)
81                         die (STATE_WARNING, "%s\n", mysql_error (&mysql));
82                 else if (mysql_errno (&mysql) == CR_SOCKET_CREATE_ERROR)
83                         die (STATE_WARNING, "%s\n", mysql_error (&mysql));
84                 else
85                         die (STATE_CRITICAL, "%s\n", mysql_error (&mysql));
86         }
88         /* get the server stats */
89         result = strdup (mysql_stat (&mysql));
91         /* error checking once more */
92         if (mysql_error (&mysql)) {
93                 if (mysql_errno (&mysql) == CR_SERVER_GONE_ERROR)
94                         die (STATE_CRITICAL, "%s\n", mysql_error (&mysql));
95                 else if (mysql_errno (&mysql) == CR_SERVER_LOST)
96                         die (STATE_CRITICAL, "%s\n", mysql_error (&mysql));
97                 else if (mysql_errno (&mysql) == CR_UNKNOWN_ERROR)
98                         die (STATE_CRITICAL, "%s\n", mysql_error (&mysql));
99         }
101         if(check_slave) {
102                 /* check the slave status */
103                 if (mysql_query (&mysql, "show slave status") != 0) {
104                         error = strdup(mysql_error(&mysql));
105                         mysql_close (&mysql);
106                         die (STATE_CRITICAL, _("slave query error: %s\n"), error);
107                 }
109                 /* store the result */
110                 if ( (res = mysql_store_result (&mysql)) == NULL) {
111                         error = strdup(mysql_error(&mysql));
112                         mysql_close (&mysql);
113                         die (STATE_CRITICAL, _("slave store_result error: %s\n"), error);
114                 }
116                 /* Check there is some data */
117                 if (mysql_num_rows(res) == 0) {
118                         mysql_close(&mysql);
119                         die (STATE_WARNING, "%s\n", _("No slaves defined"));
120                 }
122                 /* fetch the first row */
123                 if ( (row = mysql_fetch_row (res)) == NULL) {
124                         error = strdup(mysql_error(&mysql));
125                         mysql_free_result (res);
126                         mysql_close (&mysql);
127                         die (STATE_CRITICAL, _("slave fetch row error: %s\n"), error);
128                 }
130                 if (mysql_field_count (&mysql) == 12) {
131                         /* mysql 3.23.x */
132                         snprintf (slaveresult, SLAVERESULTSIZE, _("Slave running: %s"), row[6]);
133                         if (strcmp (row[6], "Yes") != 0) {
134                                 mysql_free_result (res);
135                                 mysql_close (&mysql);
136                                 die (STATE_CRITICAL, "%s\n", slaveresult);
137                         }
139                 } else {
140                         /* mysql 4.x.x */
141                         int slave_io_field = -1 , slave_sql_field = -1, seconds_behind_field = -1, i, num_fields;
142                         MYSQL_FIELD* fields;
144                         num_fields = mysql_num_fields(res);
145                         fields = mysql_fetch_fields(res);
146                         for(i = 0; i < num_fields; i++) {
147                                 if (strcmp(fields[i].name, "Slave_IO_Running") == 0) {
148                                         slave_io_field = i;
149                                         continue;
150                                 }
151                                 if (strcmp(fields[i].name, "Slave_SQL_Running") == 0) {
152                                         slave_sql_field = i;
153                                         continue;
154                                 }
155                                 if (strcmp(fields[i].name, "Seconds_Behind_Master") == 0) {
156                                         seconds_behind_field = i;
157                                         continue;
158                                 }
159                         }
160                         if ((slave_io_field < 0) || (slave_sql_field < 0) || (num_fields == 0)) {
161                                 mysql_free_result (res);
162                                 mysql_close (&mysql);
163                                 die (STATE_CRITICAL, "Slave status unavailable\n");
164                         }
165                         
166                         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]);
167                         if (strcmp (row[slave_io_field], "Yes") != 0 || strcmp (row[slave_sql_field], "Yes") != 0) {
168                                 mysql_free_result (res);
169                                 mysql_close (&mysql);
170                                 die (STATE_CRITICAL, "%s\n", slaveresult);
171                         }
173                         if (verbose >=3) {
174                                 if (seconds_behind_field == -1) {
175                                         printf("seconds_behind_field not found\n");
176                                 } else {
177                                         printf ("seconds_behind_field(index %d)=%s\n", seconds_behind_field, row[seconds_behind_field]);
178                                 }
179                         }
181                         if ((seconds_behind_field != -1) && (strcmp (row[seconds_behind_field], "NULL") != 0)) {
182                                 double value = atof(row[seconds_behind_field]);
183                                 int status;
185                                 status = get_status(value, my_threshold);
187                                 if (status == STATE_WARNING) {
188                                         printf("SLOW_SLAVE %s: %s\n", _("WARNING"), slaveresult);
189                                         exit(STATE_WARNING);
190                                 } else if (status == STATE_CRITICAL) {
191                                         printf("SLOW_SLAVE %s: %s\n", _("CRITICAL"), slaveresult);
192                                         exit(STATE_CRITICAL);
193                                 }
194                         }
195                 }
197                 /* free the result */
198                 mysql_free_result (res);
199         }
201         /* close the connection */
202         mysql_close (&mysql);
204         /* print out the result of stats */
205         if (check_slave) {
206                 printf ("%s %s\n", result, slaveresult);
207         } else {
208                 printf ("%s\n", result);
209         }
211         return STATE_OK;
215 /* process command-line arguments */
216 int
217 process_arguments (int argc, char **argv)
219         int c;
220         char *warning = NULL;
221         char *critical = NULL;
223         int option = 0;
224         static struct option longopts[] = {
225                 {"hostname", required_argument, 0, 'H'},
226                 {"database", required_argument, 0, 'd'},
227                 {"username", required_argument, 0, 'u'},
228                 {"password", required_argument, 0, 'p'},
229                 {"port", required_argument, 0, 'P'},
230                 {"critical", required_argument, 0, 'c'},
231                 {"warning", required_argument, 0, 'w'},
232                 {"check-slave", no_argument, 0, 'S'},
233                 {"verbose", no_argument, 0, 'v'},
234                 {"version", no_argument, 0, 'V'},
235                 {"help", no_argument, 0, 'h'},
236                 {0, 0, 0, 0}
237         };
239         if (argc < 1)
240                 return ERROR;
242         while (1) {
243                 c = getopt_long (argc, argv, "hvVSP:p:u:d:H:c:w:", longopts, &option);
245                 if (c == -1 || c == EOF)
246                         break;
248                 switch (c) {
249                 case 'H':                                                                       /* hostname */
250                         if (is_host (optarg)) {
251                                 db_host = optarg;
252                         }
253                         else {
254                                 usage2 (_("Invalid hostname/address"), optarg);
255                         }
256                         break;
257                 case 'd':                                                                       /* hostname */
258                         db = optarg;
259                         break;
260                 case 'u':                                                                       /* username */
261                         db_user = optarg;
262                         break;
263                 case 'p':                                                                       /* authentication information: password */
264                         db_pass = optarg;
265                         break;
266                 case 'P':                                                                       /* critical time threshold */
267                         db_port = atoi (optarg);
268                         break;
269                 case 'S':
270                         check_slave = 1;                                                        /* check-slave */
271                         break;
272                 case 'w':
273                         warning = optarg;
274                         break;
275                 case 'c':
276                         critical = optarg;
277                         break;
278                 case 'V':                                                                       /* version */
279                         print_revision (progname, revision);
280                         exit (STATE_OK);
281                 case 'h':                                                                       /* help */
282                         print_help ();
283                         exit (STATE_OK);
284                 case 'v':
285                         verbose++;
286                         break;
287                 case '?':                                                                       /* help */
288                         usage2 (_("Unknown argument"), optarg);
289                 }
290         }
292         c = optind;
294         set_thresholds(&my_threshold, warning, critical);
296         while ( argc > c ) {
298                 if (strlen(db_host) == 0)
299                         if (is_host (argv[c])) {
300                                 db_host = argv[c++];
301                         }
302                         else {
303                                 usage2 (_("Invalid hostname/address"), optarg);
304                         }
305                 else if (strlen(db_user) == 0)
306                         db_user = argv[c++];
307                 else if (strlen(db_pass) == 0)
308                         db_pass = argv[c++];
309                 else if (strlen(db) == 0)
310                         db = argv[c++];
311                 else if (is_intnonneg (argv[c]))
312                         db_port = atoi (argv[c++]);
313                 else
314                         break;
315         }
317         return validate_arguments ();
321 int
322 validate_arguments (void)
324         if (db_user == NULL)
325                 db_user = strdup("");
327         if (db_host == NULL)
328                 db_host = strdup("");
330         if (db_pass == NULL)
331                 db_pass == strdup("");
333         if (db == NULL)
334                 db = strdup("");
336         return OK;
340 void
341 print_help (void)
343         char *myport;
344         asprintf (&myport, "%d", MYSQL_PORT);
346         print_revision (progname, revision);
348         printf (_(COPYRIGHT), copyright, email);
350         printf ("%s\n", _("This program tests connections to a mysql server"));
352   printf ("\n\n");
353   
354         print_usage ();
356         printf (_(UT_HELP_VRSN));
358         printf (_(UT_HOST_PORT), 'P', myport);
360         printf (" %s\n", "-d, --database=STRING");
361   printf ("    %s\n", _("Check database with indicated name"));
362   printf (" %s\n", "-u, --username=STRING");
363   printf ("    %s\n", _("Connect using the indicated username"));
364   printf (" %s\n", "-p, --password=STRING");
365   printf ("    %s\n", _("Use the indicated password to authenticate the connection"));
366   printf ("    %s\n", _("==> IMPORTANT: THIS FORM OF AUTHENTICATION IS NOT SECURE!!! <=="));
367   printf ("    %s\n", _("Your clear-text password will be visible as a process table entry"));
368   printf (" %s\n", "-S, --check-slave");
369   printf ("    %s\n", _("Check if the slave thread is running properly."));
370   printf (" %s\n", "-w, --warning");
371   printf ("    %s\n", _("Exit with WARNING status if slave server is more then INTEGER seconds behind master"));
372   printf (" %s\n", "-c, --critical");
373   printf ("    %s\n", _("Exit with CRITICAL status if slave server is more then INTEGER seconds behind master"));
374   printf (" %s\n", _("There are no required arguments. By default, the local database with"));
375   printf (_("a server listening on MySQL standard port %d will be checked\n"), MYSQL_PORT);
377         printf (_(UT_SUPPORT));
381 void
382 print_usage (void)
384         printf (_("Usage:"));
385   printf ("%s [-d database] [-H host] [-P port] [-u user] [-p password] [-S]\n",progname);