Mysql Error File
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Mysql Log File Location Windows
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a Broker Server-Side Help Server Response to Signals The Server Shutdown Process The MySQL Data Directory The mysql System Database MySQL Server Logs Selecting General Query and Slow Query Log Output Destinations The Error Log The General Query Log The Binary Log Binary Logging Formats Setting The Binary Log Format Mixed Binary Logging Format Logging Format for Changes to mysql Database Tables The Slow Query mysql query error log Log The DDL Log Server Log Maintenance MySQL Server Plugins Server Plugins Available Installing and Uninstalling Plugins Obtaining Server Plugin Information MySQL Enterprise Thread Pool Thread Pool Components Thread Pool Installation Thread Pool Operation Thread Pool Tuning Running Multiple MySQL Instances on One Machine Setting Up Multiple Data Directories Running Multiple MySQL Instances on Windows Starting Multiple MySQL Instances at the Windows Command Line Starting Multiple MySQL Instances as Windows Services Running Multiple MySQL Instances on Unix Using Client Programs in a Multiple-Server Environment Tracing mysqld Using DTrace mysqld DTrace Probe Reference Connection Probes Command Probes Query Probes Query Parsing Probes Query Cache Probes Query Execution Probes Row-Level Probes Read Row Probes Index Probes Lock Probes Filesort Probes Statement Probes Network Probes Keycache Probes Security Backup and Recovery Optimization Language Structure Globalization Data Types Functions and Operators SQL Statement Syntax The InnoDB Storage Engine Alternative Storage Engines High Availability and Scalability Replication MySQL Cluster NDB 7.2 Partitioning Stored Programs and Views INFORMATION_SCHEMA Tables MySQL Performance Schema Connectors and APIs Extending MySQL MySQL Enterprise Edition MySQL Workbench MySQL 5.5 Frequently Asked Questions Errors, Error Codes, and Common Problems Restrictions and Limits Indexes MySQL Glossar
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Mysql Query Logs
Information Installing and Upgrading MySQL Using MySQL as a Document mysql logarithm Store Tutorial MySQL Programs Overview of MySQL Programs Using MySQL Programs Invoking MySQL Programs Connecting to mysqld log the MySQL Server Specifying Program Options Using Options on the Command Line Program Option Modifiers Using Option Files Command-Line Options that Affect Option-File Handling Using https://dev.mysql.com/doc/refman/5.5/en/error-log.html Options to Set Program Variables Option Defaults, Options Expecting Values, and the = Sign Setting Environment Variables MySQL Server and Server-Startup Programs mysqld — The MySQL Server mysqld_safe — MySQL Server Startup Script mysql.server — MySQL Server Startup Script mysqld_multi — Manage Multiple MySQL Servers MySQL Installation-Related Programs comp_err — http://dev.mysql.com/doc/mysql/en/mysqld-safe.html Compile MySQL Error Message File mysql_install_db — Initialize MySQL Data Directory mysql_plugin — Configure MySQL Server Plugins mysql_secure_installation — Improve MySQL Installation Security mysql_ssl_rsa_setup — Create SSL/RSA Files mysql_tzinfo_to_sql — Load the Time Zone Tables mysql_upgrade — Check and Upgrade MySQL Tables MySQL Client Programs mysql — The MySQL Command-Line Tool mysql Options mysql Commands mysql Logging mysql Server-Side Help Executing SQL Statements from a Text File mysql Tips mysqladmin — Client for Administering a MySQL Server mysqlcheck — A Table Maintenance Program mysqldump — A Database Backup Program mysqlimport — A Data Import Program mysqlpump — A Database Backup Program mysqlsh — The MySQL Shell mysqlshow — Display Database, Table, and Column Information mysqlslap — Load Emulation Client MySQL Administrative and Utility Programs innochecksum — Offline InnoDB File Checksum Utility myisam_ftdump — Display Full-Text Index information myisamchk — MyISAM Table-Maintenance Utility myisamchk General Options myisamchk Check Options myisamchk Repai
Quotes Presentations Experience 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 You are here: Home / Technologies / Databases / Monitoring MySQL - The error logMonitoring MySQL - The error log September 16, 2009 by ronald It is important that you monitor the MySQL error http://ronaldbradford.com/blog/monitoring-mysql-the-error-log-2009-09-16/ log. There are a few different options available for defining the details of the log. http://superuser.com/questions/660768/where-are-logs-of-mysql-fedora If not specified the default is [datadir]/[hostname].err. This is not an ideal location for 2 reasons. First, a correctly configured MySQL datadir will have permissions only for the mysql user, and this is generally restrictive access to the user only and no group or world permissions. Other users/groups should have limited access to the mysql error log. Second, the datadir mysql error is for data, not logs, especially logs that can potentially fill file systems. I am referring here to more then just the error log. I would recommend you create a separate directory for MySQL logs such as the error, slow and general logs. An example I implement for single installation environments using Linux mysql packages is: mkdir /var/log/mysql chown mysql:mysql /var/log/mysql chmod 750 /var/log/mysql There does not seem to be a consensus over whether to include mysql error log the hostname or not in the error log filename. My preference is to not include. I would rather the filename to be consistent across multiple servers. The argument is what about when consolidating logs from multiple servers. I discount this because you have to connect to the server to retrieve logs, create a sub directory of that hostname for consolidated logs. With Linux distributions you may not find log files where you expect. Ubuntu packages for example has the log going to syslog. While the theory is to make system logging and monitoring easier, it makes MySQL specific monitoring more difficult. You also suffer a logrotate problem where you may only have 7 days of log. I prefer to have access to all historical MySQL log information. The best choice is to define the error log with log-error, in both the [mysqld_safe] and [mysqld] section of your servers my.cnf [mysqld_safe] log-error=/var/log/mysql/error.log [mysqld] log-error=/var/log/mysql/error.log In MySQL 5.1 you have the luxury of different output sources, FILE, TABLE or BOTH for the general log and the slow log with -log-output. No option exists for the error log. Other my.cnf options to be aware of include: log-warnings | skip-log-warnings syslog | skip-syslog There is generally also lacking in the standard monitoring products/plugins that present MySQL status information. In my monitoring MySQL solutions I provide a line count of th
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Super User Questions Tags Users Badges Unanswered Ask Question _ Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Where are logs of MySQL ? Fedora up vote 0 down vote favorite 1 Hello I just installed MySQL on my Fedora from Source, with cmake,make,make install etc. It's working, but where can I find logs of the server? I have looked into /var/log, but there is nothing with mysql unfortunately. /etc/my.cnf # For advice on how to change settings please see # # *** DO NOT EDIT THIS FILE. It's a template which will be copied to the # *** default location during install, and will be replaced if you # *** upgrade to a newer version of MySQL. [mysqld] # Remove leading # and set to the amount of RAM for the most important data # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%. # innodb_buffer_pool_size = 128M # Remove leading # to turn on a very important data integrity option: logging # changes to the binary log between backups. # log_bin # These are commonly set, remove the # and set as required. # basedir = ..... # datadir = ..... # port = ..... # server_id = ..... # socket = ..... # Remove leading # to set options mainly useful for reporting servers. # The server defaults are faster for transactions and fast SELECTs. # Adjust sizes as needed, experiment to find the optimal values. # join_buffer_size = 128M # sort_buffer_size = 2M # read_rnd_buffer_size = 2M sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES linux fedora mysql logging share|improve this question edited Oct 16 '13 at 17:30 Hennes 51.1k776121 asked Oct 16 '13 at 17:01 CSharpBeginner 101112 Could you please specify version of MySQL and Fedora and if you configured some compilation parameters of MySQL? –pabouk Oct 16 '13 at 17:19 add a comment| 2 Answers 2 active oldest votes up vote 4 down vote If you have mysqld running you can inspect its open descriptors to see where it logs, for example using proc: [root@localhost ~]# ls -l `pgrep mysqld | s