mysql常用监控脚本命令整理【转】

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1. #检测mysql server是否正常提供服务
   
2. mysqladmin -u sky -ppwd -h localhost ping
   
3. 
   
4. #获取mysql当前的几个状态值
   
5. mysqladmin -u sky -ppwd -h localhost status
   
6. 
   
7. #获取数据库当前的连接信息
   
8. mysqladmin -u sky -ppwd -h localhost processlist
   
9. 
   
10. #获取当前数据库的连接数
    
11. mysql -u root -p123456 -BNe "select host,count(host) from processlist group by host;" information_schema
    
12. 
    
13. #显示mysql的uptime
    
14. mysql -e"SHOW STATUS LIKE '%uptime%'"|awk '/ptime/{ calc = $NF / 3600;print $(NF-1), calc"Hour" }'
    
15. 
    
16. #查看数据库的大小
    
17. mysql -u root -p123456-e 'select table_schema,round(sum(data_length+index_length)/1024/1024,4) from information_schema.tables group by table_schema;'
    
18. 
    
19. #查看某个表的列信息
    
20. mysql -u <user> --password=<password> -e "SHOW COLUMNS FROM <table>" <database> | awk '{print $1}' | tr "\n" "," | sed 's/,$//g'
    
21. 
    
22. #执行mysql脚本
    
23. mysql -u user-name -p password < script.sql
    
24. 
    
25. #mysql dump数据导出
    
26. mysqldump -uroot -T/tmp/mysqldump test test_outfile --fields-enclosed-by=" --fields-terminated-by=,
    
27. 
    
28. #mysql数据导入
    
29. mysqlimport --user=name --password=pwd test --fields-enclosed-by=" --fields-terminated-by=, /tmp/test_outfile.txt
    
30. LOAD DATA INFILE '/tmp/test_outfile.txt' INTO TABLE test_outfile FIELDS TERMINATED BY '"' ENCLOSED BY ',';
    
31. 
    
32. #mysql进程监控
    
33. ps -ef | grep "mysqld_safe" | grep -v "grep"
    
34. ps -ef | grep "mysqld" | grep -v "mysqld_safe"| grep -v "grep"
    
35. 
    
36. 
    
37. #查看当前数据库的状态
    
38. mysql -u root -p123456 -e 'show status'
    
39. 
    
40. 
    
41. #mysqlcheck 工具程序可以检查(check),修 复( repair),分 析( analyze)和优化(optimize)MySQL Server 中的表
    
42. mysqlcheck -u root -p123456 --all-databases
    
43. 
    
44. #mysql qps查询  QPS = Questions(or Queries) / Seconds
    
45. mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Questions"'
    
46. mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Queries"'
    
47. 
    
48. #mysql Key Buffer 命中率  key_buffer_read_hits = (1 - Key_reads / Key_read_requests) * 100%  key_buffer_write_hits= (1 - Key_writes / Key_write_requests) * 100%
    
49. mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Key%"'
    
50. 
    
51. #mysql Innodb Buffer 命中率  innodb_buffer_read_hits=(1-Innodb_buffer_pool_reads/Innodb_buffer_pool_read_requests) * 100%
    
52. mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Innodb_buffer_pool_read%"'
    
53. 
    
54. #mysql Query Cache 命中率 Query_cache_hits= (Qcache_hits / (Qcache_hits + Qcache_inserts)) * 100%
    
55. mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Qcache%"'
    
56. 
    
57. #mysql Table Cache 状态量
    
58. mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Open%"'
    
59. 
    
60. #mysql Thread Cache 命中率  Thread_cache_hits = (1 - Threads_created / Connections) * 100%  正常来说,Thread Cache 命中率要在 90% 以上才算比较合理。
    
61. mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Thread%"'
    
62. 
    
63. #mysql 锁定状态:锁定状态包括表锁和行锁两种,我们可以通过系统状态变量获得锁定总次数,锁定造成其他线程等待的次数,以及锁定等待时间信息
    
64. mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "%lock%"'
    
65. 
    
66. #mysql 复制延时量 在slave节点执行
    
67. mysql -u root -p123456 -e 'SHOW SLAVE STATUS'
    
68. 
    
69. #mysql Tmp table 状况 Tmp Table 的状况主要是用于监控 MySQL 使用临时表的量是否过多,是否有临时表过大而不得不从内存中换出到磁盘文件上
    
70. mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Created_tmp%"'
    
71. 
    
72. #mysql Binlog Cache 使用状况:Binlog Cache 用于存放还未写入磁盘的 Binlog 信 息 。
    
73. mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Binlog_cache%"'
    
74. 
    
75. #mysql nnodb_log_waits 量:Innodb_log_waits 状态变量直接反应出 Innodb Log Buffer 空间不足造成等待的次数
    
76. mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Innodb_log_waits'

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