发送电子邮件超过 100 秒时的 shell 脚本

发送电子邮件超过 100 秒时的 shell 脚本

在mysql上执行的时候show engine innodb status,出现这样的行---TRANSACTION 17610C9A, ACTIVE 504 sec starting index read

我需要一个脚本来监控关键字后的秒数何时ACTIVE超过 100,然后发送电子邮件警报。

答案1

value=$(show engine innodb status | grep TRANSACTION | grep ACTIVE | \
  sed -e 's/.*ACTIVE //' -e 's/\([[:digit:]]\{1,\}\).*/\1/')
if [ "$value" -gt 100 ]
then
  send email here
fi

我不确定要 grep 做什么,因为听起来输出中可能还有其他行——greps 的目标是只包含我们应该在其中查找“ACTIVE NNN”部分的行。

sed 表达式只是删除前导部分(.* 到“ACTIVE”),然后匹配 1 个或多个数字,删除数字后面的任何内容。如果结果值严格大于 100,则发送您的电子邮件。

答案2

我会做类似的事情:

detected=(
  mysql --defaults-extra-file=/etc/mysql/debian.cnf --raw -Be '
     show engine innodb status' | perl -ln -0777 -e '
       while (/(\*\*\* \(\d+\) TRANSACTION:\s+TRANSACTION \S+ ACTIVE (\d+).*?)(?=\*\*\*)/sg) {
         print $1 if $2 > 100;
       }'
)
if [ -n "$detected" ]; then
mailx -s "$subject" "$addresses" << EOF
Some transactions took more than 100 seconds:

$detected
EOF
fi

作为参考,上面的内容适应了我看到的格式,看起来更像是:

*** (1) TRANSACTION:
TRANSACTION AE523D, ACTIVE 0 sec starting index read
mysql tables in use 1, locked 1
LOCK WAIT 9 lock struct(s), heap size 1248, 4 row lock(s), undo log entries 2
MySQL thread id 40705, OS thread handle 0x7fa6d8197700, query id 5697977 localhost bugs updating
DELETE FROM tokens WHERE token = 'JpLgGK5Ygn'
*** (1) WAITING FOR THIS LOCK TO BE GRANTED:
RECORD LOCKS space id 0 page no 32823 n bits 280 index `PRIMARY` of table `bugs`.`tokens` trx id AE523D lock_mode X locks rec but not gap waiting
Record lock, heap no 212 PHYSICAL RECORD: n_fields 7; compact format; info bits 32
 0: len 10; hex 4a704c67474b3559676e; asc JpLgGK5Ygn;;
 1: len 6; hex 000000ae523b; asc     R;;;
 2: len 7; hex 6c0000c01f0572; asc l     r;;
 3: len 3; hex 80000f; asc    ;;
 4: len 8; hex 80001255ef969792; asc    U    ;;
 5: len 7; hex 73657373696f6e; asc session;;
 6: len 17; hex 6372656174655f6174746163686d656e74; asc create_attachment;;

*** (2) TRANSACTION:

相关内容