436 lines
12 KiB
C
436 lines
12 KiB
C
/*****************************************************************************
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*
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* Nagios check_mysql plugin
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*
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* License: GPL
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* Copyright (c) 1999 Didi Rieder (adrieder@sbox.tu-graz.ac.at)
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* Copyright (c) 2000 Karl DeBisschop (kdebisschop@users.sourceforge.net)
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* Copyright (c) 1999-2007 Nagios Plugins Development Team
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*
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* Last Modified: $Date: 2008-05-07 11:02:42 +0100 (Wed, 07 May 2008) $
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*
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* Description:
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*
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* This file contains the check_mysql plugin
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*
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* This program tests connections to a mysql server
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*
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* $Id: check_mysql.c 1991 2008-05-07 10:02:42Z dermoth $
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*
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*****************************************************************************/
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const char *progname = "check_mysql";
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const char *revision = "$Revision: 1991 $";
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const char *copyright = "1999-2007";
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const char *email = "nagiosplug-devel@lists.sourceforge.net";
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#define SLAVERESULTSIZE 70
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#include "common.h"
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#include "utils.h"
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#include "utils_base.h"
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#include "netutils.h"
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#include <mysql.h>
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#include <errmsg.h>
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char *db_user = NULL;
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char *db_host = NULL;
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char *db_socket = NULL;
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char *db_pass = NULL;
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char *db = NULL;
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unsigned int db_port = MYSQL_PORT;
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int check_slave = 0, warn_sec = 0, crit_sec = 0;
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int verbose = 0;
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thresholds *my_threshold = NULL;
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int process_arguments (int, char **);
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int validate_arguments (void);
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void print_help (void);
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void print_usage (void);
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int
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main (int argc, char **argv)
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{
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MYSQL mysql;
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MYSQL_RES *res;
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MYSQL_ROW row;
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/* should be status */
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char *result = NULL;
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char *error = NULL;
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char slaveresult[SLAVERESULTSIZE];
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setlocale (LC_ALL, "");
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bindtextdomain (PACKAGE, LOCALEDIR);
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textdomain (PACKAGE);
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/* Parse extra opts if any */
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argv=np_extra_opts (&argc, argv, progname);
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if (process_arguments (argc, argv) == ERROR)
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usage4 (_("Could not parse arguments"));
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/* initialize mysql */
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mysql_init (&mysql);
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mysql_options(&mysql,MYSQL_READ_DEFAULT_GROUP,"client");
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/* establish a connection to the server and error checking */
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if (!mysql_real_connect(&mysql,db_host,db_user,db_pass,db,db_port,db_socket,0)) {
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if (mysql_errno (&mysql) == CR_UNKNOWN_HOST)
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die (STATE_WARNING, "%s\n", mysql_error (&mysql));
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else if (mysql_errno (&mysql) == CR_VERSION_ERROR)
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die (STATE_WARNING, "%s\n", mysql_error (&mysql));
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else if (mysql_errno (&mysql) == CR_OUT_OF_MEMORY)
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die (STATE_WARNING, "%s\n", mysql_error (&mysql));
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else if (mysql_errno (&mysql) == CR_IPSOCK_ERROR)
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die (STATE_WARNING, "%s\n", mysql_error (&mysql));
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else if (mysql_errno (&mysql) == CR_SOCKET_CREATE_ERROR)
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die (STATE_WARNING, "%s\n", mysql_error (&mysql));
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else
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die (STATE_CRITICAL, "%s\n", mysql_error (&mysql));
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}
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/* get the server stats */
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result = strdup (mysql_stat (&mysql));
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/* error checking once more */
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if (mysql_error (&mysql)) {
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if (mysql_errno (&mysql) == CR_SERVER_GONE_ERROR)
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die (STATE_CRITICAL, "%s\n", mysql_error (&mysql));
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else if (mysql_errno (&mysql) == CR_SERVER_LOST)
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die (STATE_CRITICAL, "%s\n", mysql_error (&mysql));
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else if (mysql_errno (&mysql) == CR_UNKNOWN_ERROR)
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die (STATE_CRITICAL, "%s\n", mysql_error (&mysql));
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}
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if(check_slave) {
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/* check the slave status */
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if (mysql_query (&mysql, "show slave status") != 0) {
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error = strdup(mysql_error(&mysql));
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mysql_close (&mysql);
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die (STATE_CRITICAL, _("slave query error: %s\n"), error);
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}
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/* store the result */
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if ( (res = mysql_store_result (&mysql)) == NULL) {
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error = strdup(mysql_error(&mysql));
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mysql_close (&mysql);
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die (STATE_CRITICAL, _("slave store_result error: %s\n"), error);
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}
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/* Check there is some data */
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if (mysql_num_rows(res) == 0) {
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mysql_close(&mysql);
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die (STATE_WARNING, "%s\n", _("No slaves defined"));
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}
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/* fetch the first row */
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if ( (row = mysql_fetch_row (res)) == NULL) {
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error = strdup(mysql_error(&mysql));
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mysql_free_result (res);
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mysql_close (&mysql);
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die (STATE_CRITICAL, _("slave fetch row error: %s\n"), error);
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}
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if (mysql_field_count (&mysql) == 12) {
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/* mysql 3.23.x */
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snprintf (slaveresult, SLAVERESULTSIZE, _("Slave running: %s"), row[6]);
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if (strcmp (row[6], "Yes") != 0) {
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mysql_free_result (res);
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mysql_close (&mysql);
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die (STATE_CRITICAL, "%s\n", slaveresult);
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}
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} else {
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/* mysql 4.x.x */
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int slave_io_field = -1 , slave_sql_field = -1, seconds_behind_field = -1, i, num_fields;
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MYSQL_FIELD* fields;
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num_fields = mysql_num_fields(res);
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fields = mysql_fetch_fields(res);
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for(i = 0; i < num_fields; i++) {
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if (strcmp(fields[i].name, "Slave_IO_Running") == 0) {
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slave_io_field = i;
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continue;
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}
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if (strcmp(fields[i].name, "Slave_SQL_Running") == 0) {
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slave_sql_field = i;
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continue;
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}
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if (strcmp(fields[i].name, "Seconds_Behind_Master") == 0) {
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seconds_behind_field = i;
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continue;
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}
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}
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if ((slave_io_field < 0) || (slave_sql_field < 0) || (num_fields == 0)) {
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mysql_free_result (res);
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mysql_close (&mysql);
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die (STATE_CRITICAL, "Slave status unavailable\n");
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}
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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]);
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if (strcmp (row[slave_io_field], "Yes") != 0 || strcmp (row[slave_sql_field], "Yes") != 0) {
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mysql_free_result (res);
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mysql_close (&mysql);
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die (STATE_CRITICAL, "%s\n", slaveresult);
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}
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if (verbose >=3) {
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if (seconds_behind_field == -1) {
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printf("seconds_behind_field not found\n");
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} else {
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printf ("seconds_behind_field(index %d)=%s\n", seconds_behind_field, row[seconds_behind_field]);
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}
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}
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if ((seconds_behind_field != -1) && (strcmp (row[seconds_behind_field], "NULL") != 0)) {
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double value = atof(row[seconds_behind_field]);
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int status;
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status = get_status(value, my_threshold);
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if (status == STATE_WARNING) {
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printf("SLOW_SLAVE %s: %s\n", _("WARNING"), slaveresult);
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exit(STATE_WARNING);
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} else if (status == STATE_CRITICAL) {
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printf("SLOW_SLAVE %s: %s\n", _("CRITICAL"), slaveresult);
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exit(STATE_CRITICAL);
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}
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}
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}
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/* free the result */
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mysql_free_result (res);
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}
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/* close the connection */
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mysql_close (&mysql);
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/* print out the result of stats */
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if (check_slave) {
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printf ("%s %s\n", result, slaveresult);
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} else {
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printf ("%s\n", result);
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}
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return STATE_OK;
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}
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/* process command-line arguments */
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int
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process_arguments (int argc, char **argv)
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{
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int c;
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char *warning = NULL;
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char *critical = NULL;
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int option = 0;
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static struct option longopts[] = {
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{"hostname", required_argument, 0, 'H'},
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{"socket", required_argument, 0, 's'},
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{"database", required_argument, 0, 'd'},
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{"username", required_argument, 0, 'u'},
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{"password", required_argument, 0, 'p'},
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{"port", required_argument, 0, 'P'},
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{"critical", required_argument, 0, 'c'},
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{"warning", required_argument, 0, 'w'},
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{"check-slave", no_argument, 0, 'S'},
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{"verbose", no_argument, 0, 'v'},
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{"version", no_argument, 0, 'V'},
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{"help", no_argument, 0, 'h'},
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{0, 0, 0, 0}
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};
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if (argc < 1)
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return ERROR;
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while (1) {
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c = getopt_long (argc, argv, "hvVSP:p:u:d:H:s:c:w:", longopts, &option);
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if (c == -1 || c == EOF)
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break;
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switch (c) {
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case 'H': /* hostname */
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if (is_host (optarg)) {
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db_host = optarg;
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}
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else {
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usage2 (_("Invalid hostname/address"), optarg);
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}
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break;
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case 's': /* socket */
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db_socket = optarg;
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break;
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case 'd': /* database */
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db = optarg;
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break;
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case 'u': /* username */
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db_user = optarg;
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break;
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case 'p': /* authentication information: password */
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db_pass = strdup(optarg);
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/* Delete the password from process list */
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while (*optarg != '\0') {
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*optarg = 'X';
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optarg++;
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}
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break;
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case 'P': /* critical time threshold */
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db_port = atoi (optarg);
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break;
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case 'S':
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check_slave = 1; /* check-slave */
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break;
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case 'w':
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warning = optarg;
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break;
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case 'c':
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critical = optarg;
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break;
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case 'V': /* version */
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print_revision (progname, revision);
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exit (STATE_OK);
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case 'h': /* help */
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print_help ();
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exit (STATE_OK);
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case 'v':
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verbose++;
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break;
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case '?': /* help */
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usage5 ();
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}
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}
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c = optind;
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set_thresholds(&my_threshold, warning, critical);
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while ( argc > c ) {
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if (db_host == NULL)
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if (is_host (argv[c])) {
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db_host = argv[c++];
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}
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else {
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usage2 (_("Invalid hostname/address"), argv[c]);
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}
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else if (db_user == NULL)
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db_user = argv[c++];
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else if (db_pass == NULL)
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db_pass = argv[c++];
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else if (db == NULL)
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db = argv[c++];
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else if (is_intnonneg (argv[c]))
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db_port = atoi (argv[c++]);
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else
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break;
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}
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return validate_arguments ();
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}
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int
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validate_arguments (void)
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{
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if (db_user == NULL)
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db_user = strdup("");
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if (db_host == NULL)
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db_host = strdup("");
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if (db_pass == NULL)
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db_pass == strdup("");
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if (db == NULL)
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db = strdup("");
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return OK;
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}
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void
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print_help (void)
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{
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char *myport;
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asprintf (&myport, "%d", MYSQL_PORT);
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print_revision (progname, revision);
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printf (_(COPYRIGHT), copyright, email);
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printf ("%s\n", _("This program tests connections to a mysql server"));
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printf ("\n\n");
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print_usage ();
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printf (_(UT_HELP_VRSN));
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printf (_(UT_EXTRA_OPTS));
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printf (_(UT_HOST_PORT), 'P', myport);
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printf (" %s\n", "-s, --socket=STRING");
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printf (" %s\n", _("Use the specified socket (has no effect if -H is used)"));
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printf (" %s\n", "-d, --database=STRING");
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printf (" %s\n", _("Check database with indicated name"));
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printf (" %s\n", "-u, --username=STRING");
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printf (" %s\n", _("Connect using the indicated username"));
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printf (" %s\n", "-p, --password=STRING");
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printf (" %s\n", _("Use the indicated password to authenticate the connection"));
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printf (" ==> %s <==\n", _("IMPORTANT: THIS FORM OF AUTHENTICATION IS NOT SECURE!!!"));
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printf (" %s\n", _("Your clear-text password could be visible as a process table entry"));
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printf (" %s\n", "-S, --check-slave");
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printf (" %s\n", _("Check if the slave thread is running properly."));
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printf (" %s\n", "-w, --warning");
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printf (" %s\n", _("Exit with WARNING status if slave server is more than INTEGER seconds"));
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printf (" %s\n", _("behind master"));
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printf (" %s\n", "-c, --critical");
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printf (" %s\n", _("Exit with CRITICAL status if slave server is more then INTEGER seconds"));
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printf (" %s\n", _("behind master"));
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printf ("\n");
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printf (" %s\n", _("There are no required arguments. By default, the local database is checked"));
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printf (" %s\n", _("using the default unix socket. You can force TCP on localhost by using an"));
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printf (" %s\n", _("IP address or FQDN ('localhost' will use the socket as well)."));
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#ifdef NP_EXTRA_OPTS
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printf ("\n");
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printf ("%s\n", _("Notes:"));
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printf (_(UT_EXTRA_OPTS_NOTES));
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#endif
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printf (_(UT_SUPPORT));
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}
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void
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print_usage (void)
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{
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printf (_("Usage:"));
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printf (" %s [-d database] [-H host] [-P port] [-s socket]\n",progname);
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printf (" [-u user] [-p password] [-S]\n");
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}
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