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试图激活MySQL的用户手册(http://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_slow_query_log_file)和其他答案(How do I enable the MySQL slow query log?),他们都失败了不同的错误信息提供慢查询模式后:激活MySQL的慢查询日志在MySQL 5.5
(1) mysql -h ${SERVER_NAME} -B -N -P ${PORT_NAME} -u ${USER_NAME} --password=${PASSWORD} -e "
set global slow_query_log = 'ON';
SET global slow_query_log_file=$HOME/slow-query-log-CLIENT-${CLIENT_ID}-YEARLY-${Local_time}.log;
SELECT * FROM WHATEVER;"
ERROR 1227 (42000) at line 3: Access denied; you need (at least one of) the SUPER privilege(s) for this operation
(2) mysql -h ${SERVER_NAME} -B -N -P ${PORT_NAME} -u ${USER_NAME} --password=${PASSWORD} -e "
set global slow_query_log = 'ON';
SET global slow_query_log_file=$HOME/slow-query-log-CLIENT-${CLIENT_ID}-YEARLY-${Local_time}.log;
SET global log_output=/home/user;
ERROR 1227 (42000) at line 3: Access denied; you need (at least one of) the SUPER privilege(s) for this operation
( 3)当我按照命令行选项的MySQL用户手册时,弹出以下错误消息:
mysql -h ${SERVER_NAME} -B -N -P ${PORT_NAME} -u ${USER_NAME} --password=${PASSWORD} -e --slow_query_log --slow_query_log_file=SLOW-CLIENT-${CLIENT_ID}-${Local_time} --global log_output=/home/user "
mysql: unknown variable 'slow_query_log_file='
非常令人沮丧。任何大师能启发吗?
有趣的想法!关于cron作业部分,“flush logs”是什么意思? – Chubaka
另外,通过在/etc/mysql/my.cnf中的设置,不再有错误消息。但是,没有任何由于未知原因而生成的slow.log。你能开导吗? – Chubaka
你确实重新启动了'mysqld'? 'FLUSH LOGS'关闭并重新打开各种日志文件;我认为慢日志是包含在内的。这加上'mv',会影响骑行。 mysqld.err或mysql.log中的任何相关消息? –