mysql常用監控腳本整理
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#!/bin/sh
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#filename：mysql_monitor.sh
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#site：www.jbxue.com
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#檢測mysql server是否正常提供服務
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mysqladmin -u sky -ppwd -h localhost ping
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#獲取mysql當前的幾個狀態值
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mysqladmin -u sky -ppwd -h localhost status
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#獲取數據庫當前的連接信息
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mysqladmin -u sky -ppwd -h localhost processlist
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#獲取當前數據庫的連接數
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mysql -u root -p123456 -BNe "select host,count(host) from processlist group by host;" information_schema
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#顯示mysql的uptime
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mysql -e"SHOW STATUS LIKE '%uptime%'"|awk '/ptime/{ calc = $NF / 3600;print $(NF-1), calc"Hour" }'
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#查看數據庫的大小
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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;'
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#查看某個表的列信息
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mysql -u <user> --password=<password> -e "SHOW COLUMNS FROM <table>" <database> | awk '{print $1}' | tr "\n" "," | sed 's/,$//g'
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#執行mysql腳本
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mysql -u user-name -p password < script.sql
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#mysql dump數據導出
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mysqldump -uroot -T/tmp/mysqldump test test_outfile --fields-enclosed-by=\" --fields-terminated-by=,
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#mysql數據導入
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mysqlimport --user=name --password=pwd test --fields-enclosed-by=\" --fields-terminated-by=, /tmp/test_outfile.txt
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LOAD DATA INFILE '/tmp/test_outfile.txt' INTO TABLE test_outfile FIELDS TERMINATED BY '"' ENCLOSED BY ',';
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#mysql進程監控
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ps -ef | grep "mysqld_safe" | grep -v "grep"
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ps -ef | grep "mysqld" | grep -v "mysqld_safe"| grep -v "grep"
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#查看當前數據庫的狀態
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mysql -u root -p123456 -e 'show status'
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#mysqlcheck 工具程序可以檢查(check),修 復( repair),分 析( analyze)和優化(optimize)MySQL Server 中的表
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mysqlcheck -u root -p123456 --all-databases
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#mysql qps查詢 QPS = Questions(or Queries) / Seconds
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mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Questions"'
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mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Queries"'
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#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%
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mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Key%"'
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#mysql Innodb Buffer 命中率 innodb_buffer_read_hits=(1-Innodb_buffer_pool_reads/Innodb_buffer_pool_read_requests) * 100%
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mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Innodb_buffer_pool_read%"'
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#mysql Query Cache 命中率 Query_cache_hits= (Qcache_hits / (Qcache_hits + Qcache_inserts)) * 100%
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mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Qcache%"'
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#mysql Table Cache 狀態量
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mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Open%"'
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#mysql Thread Cache 命中率 Thread_cache_hits = (1 - Threads_created / Connections) * 100% 正常來說,Thread Cache 命中率要在 90% 以上才算比較合理。
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mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Thread%"'
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# www.jbxue.com
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#mysql 鎖定狀態:鎖定狀態包括表鎖和行鎖兩種,我們可以通過系統狀態變量獲得鎖定總次數,鎖定造成其他線程等待的次數,以及鎖定等待時間信息
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mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "%lock%"'
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#mysql 復制延時量 在slave節點執行
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mysql -u root -p123456 -e 'SHOW SLAVE STATUS'
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#mysql Tmp table 狀況 Tmp Table 的狀況主要是用於監控 MySQL 使用臨時表的量是否過多,是否有臨時表過大而不得不從內存中換出到磁盤文件上
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mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Created_tmp%"'
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#mysql Binlog Cache 使用狀況:Binlog Cache 用於存放還未寫入磁盤的 Binlog 信 息 。
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mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Binlog_cache%"'
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#mysql nnodb_log_waits 量:Innodb_log_waits 狀態變量直接反應出 Innodb Log Buffer 空間不足造成等待的次數
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mysql -u root -p123456 -e 'SHOW /*!50000 GLOBAL */ STATUS LIKE "Innodb_log_waits'
