1,编写事务监控脚本 #!/bin/bash # author: tim.man # version: 1.0 # desc: check the RUNNING TRANSACTION over
ST_OK=0 ST_WR=1 ST_CR=2 ST_UK=3
TIME_TRX=10
# 提示信息 print_help() { echo "$PROGNAME -w INT -c INT" echo "Options:" echo " -w/--warning)" echo " Sets a warning number" echo " -c/--critical)" echo " Sets a critical level for io" exit $ST_UK }
while test -n "$1"; do case "$1" in -help|-h) print_help exit $ST_UK ;; --warning|-w) warning=$2 shift ;; --critical|-c) critical=$2 shift ;; *) echo "Unknown argument: $1" print_help exit $ST_UK ;; esac shift done
get_wcdiff() { if [ ! -z "$warning" -a ! -z "$critical" ] then wclvls=1 if [ ${warning} -gt ${critical} ] then wcdiff=1 fi elif [ ! -z "$warning" -a -z "$critical" ] then wcdiff=2 elif [ -z "$warning" -a ! -z "$critical" ] then wcdiff=3 fi }
# 脚本判断 val_wcdiff() { if [ "$wcdiff" = 1 ] then echo "Please adjust your warning/critical thresholds. The warning must be lower than the critical level!" exit $ST_UK elif [ "$wcdiff" = 2 ] then echo "Please also set a critical value when you want to use warning/critical thresholds!" exit $ST_UK elif [ "$wcdiff" = 3 ] then echo "Please also set a warning value when you want to use warning/critical thresholds!" exit $ST_UK fi }
get_wcdiff val_wcdiff
# 统计mysql的事务中最大运行时间 max_over_time=`/usr/local/mysql/bin/mysql --user=nagios --password="nagiosq@xxx" -NS /usr/local/mysql/mysql.sock -e "SELECT TIME_TO_SEC(TIMEDIFF(NOW(),t.trx_started)) FROM information_schem a.INNODB_TRX t WHERE TIME_TO_SEC(TIMEDIFF(NOW(),t.trx_started))>$TIME_TRX ORDER BY TIME_TO_SEC(TIMEDIFF(NOW(),t.trx_started)) DESC LIMIT 1;" |awk ‘{print $1}‘`
# 如果当前没有RUNNING的事务，则直接赋值为0，以免下面if判断出错 if [ ! -n "$max_over_time" ];then max_over_time=0 fi
# 取得当前所以阻塞的事务数量 num_trx=`/usr/local/mysql/bin/mysql --user=nagios --password="nagiosq@xxx" -NS /usr/local/mysql/mysql.sock -e "SELECT COUNT(1) FROM information_schema.INNODB_TRX t WHERE TIME_TO_SEC(TIMEDIF F(NOW(),t.trx_started))>$TIME_TRX;" |awk ‘{print $1}‘`
if [ -n "$warning" -a -n "$critical" ] then if [ `expr $max_over_time \> $warning` -eq 1 -a `expr $max_over_time \< $critical` -eq 1 ] then echo "WARNING - $num_trx TRANSACTIONS RUNNING,go over for $max_over_time seconds" exit $ST_WR elif [ `expr $max_over_time \> $critical` -eq 1 ] then echo "CRITICAL- $num_trx TRANSACTIONS RUNNNING,go over for $max_over_time seconds" exit $ST_CR else echo "OK- TRANSACTIONS RAN successfully." exit $ST_OK fi fi
2，在nagios客户端添加脚本监控 先测试下脚本 [root@wgq_idc_dbm_3_61 binlog]# /usr/local/nagios/libexec/check_trx -w 30 -c 60 Warning: Using a password on the command line interface can be insecure. Warning: Using a password on the command line interface can be insecure. OK- TRANSACTIONS RAN successfully.
[root@wgq_idc_dbm_3_61 binlog]#
在nrpe.cfg里面添加监控命令 [root@wgq_idc_dbm_3_61 binlog]# vim /usr/local/nagios/etc/nrpe.cfg command[check_mysql_trx]=/usr/local/nagios/libexec/check_trx -w 30 -c 60
