Amazon RDS provides us with three different types of logs :<\/p>\n
<\/p>\n
You can enable these logs by modifying the DB Parameter Group.<\/p>\n
[js]
\nParameter Name : general_log
\nValue : set the value to 1. Default is 0.
\n[\/js]<\/p>\n
[js]
\nParameter Name : slow_query_log
\nValue : set the value to 1. Default is 0.
\n[\/js]<\/p>\n
Once you enable these logs, Amazon RDS starts generating logs.<\/p>\n
Amazon RDS defines two output format ( TABLE or FILE )for logs storage :<\/p>\n
[js] Parameter : log_output [\/js]<\/p>\n
<\/p>\n
<\/p>\n
–> If log_output is set to TABLE, then Amazon RDS generates logs inside general log\/slow log<\/strong> inside mysql.general_log<\/strong> and mysql.slow_log TABLE<\/strong> respectively.<\/p>\n –> log contents are accessible through SQL commands. e.g<\/p>\n [js] –> logs table are not automatically rotated.<\/p>\n –> Enabling log_output = TABLE increases amount of data written to database which decreases performance.<\/p>\n –> as the log file grows, we need to manually rotate the logs by calling below commands successively.<\/p>\n –> you will always receive this warning “[ The MySQL general and\/or slow logs of the DB Instance: rds-Instances are consuming a large amount of provisioned storage.<\/strong>]” under AWS RDS Events section if you use TABLE format log. As it keeps on writing logs to the databases table.<\/p>\n –> To manually rotate the general\/slowquery log, you will have to execute the below commands.<\/p>\n [js] Note : To remove logs completely and free the disk space, call the above command twice.<\/p>\n <\/p>\n –> If log_output is set to FILE, then Amazon RDS writes the logs to the file system.<\/p>\n –> logs are automatically rotated every hours and logs file older than 24 hours are deleted automatically.<\/p>\n –> logs can be seen \/ downloaded directly from Amazon RDS API, Amazon RDS CLI, or AWS SDKs.<\/strong><\/p>\n To Download logs directly from the AWS RDS Console, you have to execute the below API call.<\/p>\n [js]<\/p>\n aws rds download-db-log-file-portion –db-instance-identifier testing-RDS –log-file-name slowquery\/mysql-slowquery.log –output text > file.txt<\/p>\n [\/js]<\/p>\n Note : It’s recommended to set the Value of Parameter “log_output” as FILE for the better performance, as it lowers the overheads of read and write on databases.<\/p>\n","protected":false},"excerpt":{"rendered":" Amazon RDS provides us with three different types of logs : 1) General Logs 2) Slow Query Logs 3) Error Logs You can enable these logs by modifying the DB Parameter Group. 1) Enable General Log [js] Parameter Name : general_log Value : set the value to 1. Default is 0. [\/js] 2) Enable […]<\/p>\n","protected":false},"author":100,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":97,"footnotes":""},"categories":[1174],"tags":[288,76,1442,646],"class_list":["post-17540","post","type-post","status-publish","format-standard","hentry","category-aws-2","tag-logging","tag-mysql","tag-rds","tag-sql-logging-for-method"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t
\nmysql> SELECT * FROM slow_log ORDER BY query_time DESC;
\n[\/js]<\/p>\n
\nmysql> CALL mysql.rds_rotate_slow_log;
\nmysql> CALL mysql.rds_rotate_general_log;
\n[\/js]<\/p>\n2) FILE.<\/h3>\n