介紹：Anemometer 是一個圖形化顯示MySQL慢日志的工具。結(jié)合pt-query-digest，Anemometer可以很輕松的幫你去分析慢查詢?nèi)罩荆屇愫苋菀拙湍苷业侥男㏒QL需要優(yōu)化 This is the Box Anemometer, the MySQL Slow Query Monitor. This tool is used to analyze slow query logs collected from MySQL instances to identify problematic queries
環(huán)境概況 以寫此文章時 percona-toolkit最新的版本3.0.10為例 mysql數(shù)據(jù)庫對應(yīng)版本為5.7.21，二進制安裝 http和php均是系統(tǒng)CentOS Linux release 7.4.1708 (Core)自帶版本
For pt-query-digest version >= 2.2 $ pt-query-digest --user=anemometer --password=superSecurePass / --review h=db.example.com,D=slow_query_log,t=global_query_review / --history h=db.example.com,D=slow_query_log,t=global_query_review_history / --no-report --limit=0% / --filter=" /$event->{Bytes} = length(/$event->{arg}) and /$event->{hostname}=/"$HOSTNAME/"" / /var/lib/mysql/db.example.com-slow.log
2、慢查詢主機推動腳本示例 #config anemometer server, the purpose is to push slow query to the remote anemometer server and store it. anemometer_host="127.0.0.1" anemometer_user="root" anemometer_password="123456" anemometer_port=5700 anemometer_db="slow_query_log"
#config mysql server, the purpose is to get the path of the slow query log. mysql_client="/usr/local/mysql-5.7.21/bin/mysql" mysql_user="root" mysql_password="123456" mysql_socket="/tmp/mysql_5700.sock" mysql_port=5700
#config slowqury dir to cd, and then delete the expired slow query file. slowquery_dir="/data/mysql_$mysql_port/"
#get the path of the slow query log. slowquery_file=`$mysql_client -u$mysql_user -p$mysql_password -S $mysql_socket -e "show variables like 'slow_query_log_file'"|grep log|awk '{print $2}'` pt_query_digest="/data/percona-toolkit-3.0.10/bin/pt-query-digest"
#collect mysql slowquery log into lepus database. $pt_query_digest --user=$anemometer_user --password=$anemometer_password --port=$anemometer_port --review h=$anemometer_host,D=$anemometer_db,t=global_query_review --history h=$anemometer_host,D=$anemometer_db,t=global_query_review_history --no-report --limit=0% --filter=" /$event->{Bytes} = length(/$event->{arg}) and /$event->{hostname}=/"$HOSTNAME:$mysql_port/"" $slowquery_file
#generate a new slow query log, the below is generate a new slow file per hour. tmp_log=`$mysql_client -u$mysql_user -p$mysql_password -S $mysql_socket -e "select concat('$slowquery_dir','slowquery_',date_format(now(),'%Y%m%d%H'),'.log');"|grep log|sed -n -e '2p'`
#use new slow file to config mysql slowquery $mysql_client -u$mysql_user -p$mysql_password -S $mysql_socket -e "set global slow_query_log = 0;set global slow_query_log_file = '$tmp_log';" $mysql_client -u$mysql_user -p$mysql_password -S $mysql_socket -e "set global slow_query_log = 1; "
#delete slow query file before 2 days cd $slowquery_dir /usr/bin/find ./ -name 'slowquery_*.log' -mtime +2|xargs rm -rf ;
