Enable Mysql Error Log Ubuntu
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2013 175,006 mysql mariadb log performance databases memcached sysadmin Debian how-to Share: Tweet Image source: Blue and pink dolphins at work If you are a web developer, you need to refer
Mysql Error Log Location Ubuntu
to various log files, in order to debug your application or improve its performance. Logs linux mysql error log is the best place to start troubleshooting. Concerning the famous MySQL database server (or MariaDB server), you need to refer to the following
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log files: The Error Log. It contains information about errors that occur while the server is running (also server start and stop) The General Query Log. This is a general record of what mysqld is doing (connect, ubuntu apache error log disconnect, queries) The Slow Query Log. Ιt consists of "slow" SQL statements (as indicated by its name). This article does not refer to The Binary Log. This requires very high standards server hardware and is useful only in special cases (e.g. replication, master - slaves setup, certain data recovery operations). Οtherwise, it is just a "performance killer". The official documentation about MySQL logs is available here. Enable logs from MySQL configuration Logging parameters are where are mysql log files located under [mysqld] section. Edit MySQL configuration file: nano /etc/mysql/my.cnf This is the default setup for Logging and Replication (in Debian server). In other distributions the structure may be different, but you can always use MySQL server parameters: # * Logging and Replication # # Both location gets rotated by the cronjob. # Be aware that this log type is a performance killer. # As of 5.1 you can enable the log at runtime! #general_log_file = /var/log/mysql/mysql.log #general_log = 1 # # Error logging goes to syslog due to /etc/mysql/conf.d/mysqld_safe_syslog.cnf. # # Here you can see queries with especially long duration #log_slow_queries = /var/log/mysql/mysql-slow.log #long_query_time = 2 #log-queries-not-using-indexes # # The following can be used as easy to replay backup logs or for replication. # note: if you are setting up a replication slave, see README.Debian about # other settings you may need to change. #server-id = 1 #log_bin = /var/log/mysql/mysql-bin.log expire_logs_days = 10 max_binlog_size = 100M #binlog_do_db = include_database_name #binlog_ignore_db = include_database_name All log files are NOT enabled by default MySQL setup (except the error log on Windows). Default Debian setup sends Error log to syslog. The other log files are not enabled. Error Log Error Log goes to syslog due to /etc/mysql/conf.d/mysqld_safe_syslog.cnf, which contains the following: [mysqld_safe] syslog This is the recommended method. If, for some reason, you do not
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Mysql Enable Error Log
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Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; http://www.pontikis.net/blog/how-and-when-to-enable-mysql-logs it only takes a minute: Sign up How to enable MySQL query log in “Server version: 5.5.40-0ubuntu0.14.04.1 - (Ubuntu)” on to server? up vote 1 down vote favorite I'm using MySQL database server ("Server version: 5.5.40-0ubuntu0.14.04.1 - (Ubuntu)") using phpMyAdmin. I'm using PHP as a server-side language which communicates with the database by means of SQL queries. I want to http://stackoverflow.com/questions/30094945/how-to-enable-mysql-query-log-in-server-version-5-5-40-0ubuntu0-14-04-1-ubu add the log of all the queries that are basically called from the PHP code. I did lot of research on this issue and gone through various similar questions on SO but still I'm confused because all those questions and answers are quite old(posted way back around 6-7 years). So I want the latest,reliable and best solution for the current situation. Though let me tell you few specific things on my server in order to understand my problem better and provide me the best possible solution. First of all I checked whether the query log is enabled in a file my.cnf (location on server : /etc/mysql/my.cnf) The file content is as follows : # # The MySQL database server configuration file. # # You can copy this to one of: # - "/etc/mysql/my.cnf" to set global options, # - "~/.my.cnf" to set user-specific options. # # One can use all long options that the program supports. # Run program with --help to get a list of available options and with # --print-defaults to see which it wou
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