这篇文章主要介绍如何监控innodb status指标，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！

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输入被监控机器的ip 实时获取innodb相关status指标，包含：
---------|--- MySQL Command Status --|----- Innodb row operation ----|-- Buffer Pool Read --
---QPS---|select insert update delete|  read inserted updated deleted|   logical    physical


#需要编译脚本 写入账号密码  
#可以给自己维护的所有DB创建一个监控专用账号 密码统一 这样写死在脚本中 直接用即可
]$ cat innodb_status.sh
#!/bin/bash


#参数变量
host=$1
port=$2
username=用户
passwd=密码


#echo "sh $0 $host $username $passwd $port"


#fountion 脚本说明、帮助
help_info(){  
    echo "NAME"  
    echo "      $0"  
    echo "SYNOPSIS"  
    echo "      $0 is a shell script and monitor innodb status,eg:qps,tps......"  
    echo "DESCRIPTION"  
    echo "      option like mysql client -h host -u username -p password -P port"  
    echo "Usage:"
    echo "      sh $0 ipaddr username password port"
    echo "      E.g sh $0 10.111.7.31 3306 yujx yujxpw"
    echo
}  


#function 打印innodb相关指标
server_id(){
        mysql -h $host -P$port -u$username -p$passwd  -e "show variables like 'server_id'"|grep -iv value
}


innodb_status(){
mysqladmin -h $host -P$port -u$username -p$passwd  -r -i 1 ext |\
awk -F"|" \
"BEGIN{ count=0; }"\
'{ if($2 ~ /Variable_name/ && ((++count)%20 == 1)){\
    print "----------|---------|--- MySQL Command Status --|----- Innodb row operation ----|-- Buffer Pool Read --";\
    print "---Time---|---QPS---|select insert update delete|  read inserted updated deleted|   logical    physical";\
}\
else if ($2 ~ /Queries/){queries=$3;}\
else if ($2 ~ /Com_select /){com_select=$3;}\
else if ($2 ~ /Com_insert /){com_insert=$3;}\
else if ($2 ~ /Com_update /){com_update=$3;}\
else if ($2 ~ /Com_delete /){com_delete=$3;}\
else if ($2 ~ /Innodb_rows_read/){innodb_rows_read=$3;}\
else if ($2 ~ /Innodb_rows_deleted/){innodb_rows_deleted=$3;}\
else if ($2 ~ /Innodb_rows_inserted/){innodb_rows_inserted=$3;}\
else if ($2 ~ /Innodb_rows_updated/){innodb_rows_updated=$3;}\
else if ($2 ~ /Innodb_buffer_pool_read_requests/){innodb_lor=$3;}\
else if ($2 ~ /Innodb_buffer_pool_reads/){innodb_phr=$3;}\
else if ($2 ~ /Uptime / && count >= 2){\
  printf(" %s |%9d",strftime("%H:%M:%S"),queries);\
  printf("|%6d %6d %6d %6d",com_select,com_insert,com_update,com_delete);\
  printf("|%6d %8d %7d %7d",innodb_rows_read,innodb_rows_inserted,innodb_rows_updated,innodb_rows_deleted);\
  printf("|%10d %11d\n",innodb_lor,innodb_phr);\
}}'
}


# 默认端口3306
if [ ! $port ]; then  
       port=3306
fi  


#echo $#,$1


# 执行脚本
if [ $# -le 0 ]||[ "$1"x = "-h"x ]||[ "$1"x = "--help"x ]
then  
    help_info  
else
    echo "................"
    server_id
    echo "..................."
    innodb_status
fi  


#运行
]$ ./innodb_status.sh ip地址
................
Warning: Using a password on the command line interface can be insecure.
server_id       111111
...................
Warning: Using a password on the command line interface can be insecure.
----------|---------|--- MySQL Command Status --|----- Innodb row operation ----|-- Buffer Pool Read --
---Time---|---QPS---|select insert update delete|  read inserted updated deleted|   logical    physical
 09:37:24 |    10526|   318     66   5021      0| 18124       66   10061       0|    537009          87
 09:37:25 |    10596|   298     96   5048      0| 21170       96   10118       0|    535858          79
 09:37:26 |    10300|   238     65   4947      0| 21968       65    9914       0|    525109          91

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