Nagios 裡面監控MySQL 監控事務夯住(RUNNING)警示通知

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Nagios 裡面監控MySQL 監控事務夯住(RUNNING)警示通知

序言:
業務警示訂單提交異常,頁面一直沒有反應,排查後是事務沒有提交或者復原導致,想到如果及時監控事務的運行狀態警示出來,那麼就可以及時排查出問題所在,方便運營處理,所以自己就弄了一個shell指令碼放在nagios來處理事務警示情況。

1,編寫事務監控指令碼
#!/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


# 提示資訊
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 


# 指令碼判斷
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 


# 統計mysql的事務中最大已耗用時間
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}'`

# 如果當前沒有RUNNING的事務,則直接賦值為0,以免下面if判斷出錯
if [ ! -n "$max_over_time" ];then max_over_time=0
fi

# 取得當前所以阻塞的事務數量
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用戶端添加指令碼監控
先測試下指令碼
[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裡面添加監控命令
[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

之後重啟nagios用戶端監控, service nrpe restart

4,在nagios主監控伺服器上面添加配置選項
先去nagios伺服器上面check一下
[root@localhost etc]# /usr/local/nagios/libexec/check_nrpe -H10.254.3.61 -c check_mysql_trx
OK- TRANSACTIONS RAN successfully.
[root@localhost etc]#

在services.cfg裡面添加事務監控選項:
define service{
        host_name              mysqlserver
        service_description    Check mysql transctions
        check_command          check_nrpe!check_mysql_trx
        max_check_attempts      5
        check_command          check_nrpe!check_mysql_trx
        max_check_attempts      5
        normal_check_interval  3
        retry_check_interval    2
        check_period            24x7
        notification_interval  10
        notification_period    24x7
        notification_options    w,u,c,r
        contact_groups          opsweb
        }

在commands.cnf裡面添加事務監控命令:
# add by tim.man on 20141201
define command{
        command_name    check_mysql_trx
        command_line    $USER1$/check_mysql_trx -w $ARG1$ -c $ARG2$
        }

郵件簡訊警示電話警示已經添加,所以無需重新設定。

然後重新載入nagios
[root@localhost objects]# service nagios reload
Running configuration check...
Reloading nagios configuration...
done
[root@localhost objects]#

5,去nagios主監控介面查看監控效果

正常監控效果:

嚴重監控效果:

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