1.查看服务器使用状态
mysqladmin -uroot -p -S /tmp/mysql.sock -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 %11d\n",innodb_lor,innodb_phr);\
}}' |
2.处理generlog
|
|
3.查看无主键的表
select table_schema,table_name,TABLE_TYPE,ENGINE,ROW_FORMAT,TABLE_ROWS from information_schema.tables where (table_schema,table_name) not in (select distinct table_schema,table_name from information_schema.columns where COLUMN_KEY='PRI') and table_schema not in ('sys','mysql','information_schema','performance_schema' );
|
4.查看非innodb引擎表
select table_name,table_schema,engine from information_schema.tables where engine!='innodb' and table_schema not in('mysql','information_schema','performance_schema');
|
5.插卡行锁
select trx_tables_locked,trx_lock_structs,trx_wait_started,trx_state,trx_requested_lock_id from INNODB_TRX where trx_tables_locked != 0 or trx_wait_started is not NULL;
|
6.查看进程信息
按客户端 IP 分组，看哪个客户端的链接数最多select client_ip,count(client_ip) as client_num from (select substring_index(host,':' ,1) as client_ip from processlist ) as connect_info group by client_ip order by client_num desc;
查看正在执行的线程，并按 Time 倒排序，看看有没有执行时间特别长的线程
select * from information_schema.processlist where Command != 'Sleep' and INFO like "%select%" order by Time desc\G;
找出所有执行时间超过 5 分钟的线程，拼凑出 kill 语句，方便后面查杀select concat('kill ', id, ';') from information_schema.processlist where Command != 'Sleep' and Time > 300 order by Time desc;
|
7.查看innodb行锁信息
innodb行锁信息
---------------查看innodb行锁信息----------------------SELECT p2.`HOST` Blockedhost,p2.`USER` BlockedUser,
r.trx_id BlockedTrxId,
r.trx_mysql_thread_id BlockedThreadId,
r.trx_query BlockedQuery,
l.lock_table BlockedTable,
m.`lock_mode` BlockedLockMode,
m.`lock_type` BlockedLockType,
m.`lock_index` BlockedLockIndex,
m.`lock_space` BlockedLockSpace,
m.lock_page BlockedLockPage,
m.lock_rec BlockedLockRec,
m.lock_data BlockedLockData,
p.`HOST` blocking_host,
p.`USER` blocking_user,
b.trx_id BlockingTrxid,
b.trx_mysql_thread_id BlockingThreadId,
b.trx_query BlockingQuery,
l.`lock_mode` BlockingLockMode,
l.`lock_type` BlockingLockType,
l.`lock_index` BlockingLockIndex,
l.`lock_space` BlockingLockSpace,
l.lock_page BlockingLockPage,
l.lock_rec BlockingLockRec,
l.lock_data BlockingLockData,
FROM INNER JOIN information_schema.INNODB_LOCKS l ON w.blocking_lock_id = l.lock_id AND l.`lock_trx_id`=b.`trx_id`
INNER JOIN information_schema.INNODB_LOCKS m ON m.`lock_id`=w.`requested_lock_id` AND m.`lock_trx_id`=r.`trx_id`
ORDER BY WaitTime DESC \G;
----------------------对应的中文------------------------SELECT p2.`HOST` 被阻塞方host,
p2.`USER` 被阻塞方用户,
r.trx_id 被阻塞方事务id,
r.trx_mysql_thread_id 被阻塞方线程号,
r.trx_query 被阻塞的查询,
l.lock_table 阻塞方锁住的表,
m.`lock_mode` 被阻塞方的锁模式,
m.`lock_type` "被阻塞方的锁类型(表锁还是行锁)",
m.`lock_index` 被阻塞方锁住的索引,
m.`lock_space` 被阻塞方锁对象的space_id,
m.lock_page 被阻塞方事务锁定页的数量,
m.lock_rec 被阻塞方事务锁定行的数量,
m.lock_data 被阻塞方事务锁定记录的主键值,
p.`HOST` 阻塞方主机,
p.`USER` 阻塞方用户,
b.trx_id 阻塞方事务id,
b.trx_mysql_thread_id 阻塞方线程号,
b.trx_query 阻塞方查询,
l.`lock_mode` 阻塞方的锁模式,
l.`lock_type` "阻塞方的锁类型(表锁还是行锁)",
l.`lock_index` 阻塞方锁住的索引,
l.`lock_space` 阻塞方锁对象的space_id,
l.lock_page 阻塞方事务锁定页的数量,
l.lock_rec 阻塞方事务锁定行的数量,
l.lock_data 阻塞方事务锁定记录的主键值,
FROM INNER JOIN information_schema.INNODB_LOCKS l ON w.blocking_lock_id = l.lock_id AND l.`lock_trx_id`=b.`trx_id`
INNER JOIN information_schema.INNODB_LOCKS m ON m.`lock_id`=w.`requested_lock_id` AND m.`lock_trx_id`=r.`trx_id`
ORDER BY 等待时间 DESC \G;
|