Mysql应用Linux中使用mysqladmin extended-status配合Linux命令
《Mysql应用Linux中使用mysqladmin extended-status配合Linux命令查看MySQL运行状态》要点: mysqladmin是MySQL一个重要的客户端,最常见的是使用它来关闭数据库,除此,该命令还可以了解MySQL运行状态、进程信息、进程杀死等.本文介绍一下如何使用mysqladmin extended-status(因为没有"歧义",所以可以使用ext代替)了解MySQL的运行状态.MYSQL实例 1. 使用-r/-i参数MYSQL实例 使用mysqladmin extended-status命令可以获得所有MySQL性能指标,即show global status的输出,不过,因为多数这些指标都是累计值,如果想了解当前的状态,则需要进行一次差值计算,这就是mysqladmin extended-status的一个额外功能,非常实用.默认的,使用extended-status,看到也是累计值,但是,加上参数-r(--relative),就可以看到各个指标的差值,配合参数-i(--sleep)就可以指定刷新的频率,那么就有如下命令: mysqladmin -uroot -r -i 1 -pxxx extended-status +------------------------------------------+----------------------+ | Variable_name??????????????????????????? | Value??????????????? | +------------------------------------------+----------------------+ | Aborted_clients????????????????????????? | 0??????????????????? | | Com_select?????????????????????????????? | 336????????????????? | | Com_insert?????????????????????????????? | 243????????????????? | ...... | Threads_created????????????????????????? | 0??????????????????? | +------------------------------------------+----------------------+ 2. 配合grep使用MYSQL实例 配合grep使用,我们就有: mysqladmin -uroot -r -i 1 -pxxx extended-status |grep "Questions|Queries|Innodb_rows|Com_select |Com_insert |Com_update |Com_delete " | Com_delete?????????????????????????????? | 1??????????????????? | | Com_delete_multi???????????????????????? | 0??????????????????? | | Com_insert?????????????????????????????? | 321????????????????? | | Com_select?????????????????????????????? | 286????????????????? | | Com_update?????????????????????????????? | 63?????????????????? | | Innodb_rows_deleted????????????????????? | 1??????????????????? | | Innodb_rows_inserted???????????????????? | 207????????????????? | | Innodb_rows_read???????????????????????? | 5211???????????????? | | Innodb_rows_updated????????????????????? | 65?????????????????? | | Queries????????????????????????????????? | 2721???????????????? | | Questions??????????????????????????????? | 2721???????????????? | 3. 配合简单的awk使用MYSQL实例 使用awk,同时输出时间信息: mysqladmin -uroot -p -h127.0.0.1 -P3306 -r -i 1 ext | awk -F"|" '{ ? if($2 ~ /Variable_name/){ ??? print " <-------------??? "? strftime("%H:%M:%S") "??? ------------->"; ? } ? if($2 ~ /Questions|Queries|Innodb_rows|Com_select |Com_insert |Com_update |Com_delete |Innodb_buffer_pool_read_requests/) ??? print $2 $3; }' <-------------??? 12:38:49??? -------------> ?Com_delete???????????????????????????? 0 ?Com_insert???????????????????????????? 0 ?Com_select???????????????????????????? 0 ?Com_update???????????????????????????? 0 ?Innodb_buffer_pool_read_requests?????? 589 ?Innodb_rows_deleted??????????????????? 0 ?Innodb_rows_inserted?????????????????? 2 ?Innodb_rows_read?????????????????????? 50 ?Innodb_rows_updated??????????????????? 50 ?Queries??????????????????????????????? 105 ?Questions????????????????????????????? 1 ?<-------------??? 12:38:50??? -------------> ?Com_delete???????????????????????????? 0 ?Com_insert???????????????????????????? 0 ?Com_select???????????????????????????? 0 ?Com_update???????????????????????????? 0 ?Innodb_buffer_pool_read_requests?????? 1814 ?Innodb_rows_deleted??????????????????? 0 ?Innodb_rows_inserted?????????????????? 0 ?Innodb_rows_read?????????????????????? 8 ?Innodb_rows_updated??????????????????? 8 ?Queries??????????????????????????????? 17 ?Questions????????????????????????????? 1 4. 配合复杂一点的awkMYSQL实例 反正也不简单了,那就更复杂一点,这样让输出结果更友好点,因为awk不支持动态变量,所以代码看起来比较复杂: mysqladmin -P3306 -uroot -p -h127.0.0.1 -r -i 1 ext | awk -F"|" "BEGIN{ count=0; }" '{ if($2 ~ /Variable_name/ && ++count == 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 %11dn",innodb_lor,innodb_phr); }}' 代码如下: ----------|---------|--- MySQL Command Status --|----- Innodb row operation ----|-- Buffer Pool Read -- ---Time---|---QPS---|select insert update delete|? read inserted updated deleted|?? logical??? physical ?10:37:13 |???? 2231|?? 274??? 214???? 70????? 0|? 4811????? 160????? 71?????? 0|????? 4146?????????? 0 ?10:37:14 |???? 2972|?? 403??? 256???? 84???? 23|? 2509????? 173????? 85????? 23|????? 4545?????????? 0 ?10:37:15 |???? 2334|?? 282??? 232???? 66????? 1|? 1266????? 154????? 67?????? 1|????? 3543?????????? 0 ?10:37:15 |???? 2241|?? 271??? 217???? 66????? 0|? 1160????? 129????? 66?????? 0|????? 2935?????????? 0 ?10:37:17 |???? 2497|?? 299??? 224???? 97????? 0|? 1141????? 149????? 95?????? 0|????? 3831?????????? 0 ?10:37:18 |???? 2871|?? 352??? 304???? 74???? 23|? 8202????? 226????? 73????? 23|????? 6167?????????? 0 ?10:37:19 |???? 2441|?? 284??? 233???? 82????? 0|? 1099????? 121????? 78?????? 0|????? 3292?????????? 0 ?10:37:20 |???? 2342|?? 279??? 242???? 61????? 0|? 1083????? 224????? 61?????? 0|????? 3366?????????? 0 就这样了,这几个命令本身用的比较多,随手分享出来.MYSQL实例 《Mysql应用Linux中使用mysqladmin extended-status配合Linux命令查看MySQL运行状态》是否对您有启发,欢迎查看更多与《Mysql应用Linux中使用mysqladmin extended-status配合Linux命令查看MySQL运行状态》相关教程,学精学透。编程之家PHP学院为您提供精彩教程。 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |