Error Log Mysql Ubuntu
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us debug the posting issues ? < is the place to report it, thanks ! Results 1 to 3 of 3 Thread: where is the mysql error log Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode August 29th, 2010 #1 jrtboht View Profile View Forum Posts Private Message 5 Cups of Ubuntu Join Date May 2010 ubuntu php error log Beans 42 where is the mysql error log I can't seem to find where mysql error logs are kept. I've generated a few errors and then checked /var/log/syslog, /var/log/mysql.log and /var/log/mysql/error.log and didn't see mysql errors in any of those files. The 2 mysql files were empty and I didn't see any mysql errors in syslog. Here is the what the logging portion of my.cnf looks like. Code: # * 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 log_error = /var/log/mysql/error.log # 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 # # * InnoDB # # InnoDB is enabled by default with a 10MB datafile in /var/lib/my
175,790 mysql mariadb log performance databases memcached sysadmin Debian how-to Share: Tweet Image source: Blue and ubuntu apache error log pink dolphins at work If you are a web developer, you need
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to refer to various log files, in order to debug your application or improve its performance. Logs is the
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best place to start troubleshooting. Concerning the famous MySQL database server (or MariaDB server), you need to refer to the following log files: The Error Log. It contains information about https://ubuntuforums.org/showthread.php?t=1563509 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, 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 http://www.pontikis.net/blog/how-and-when-to-enable-mysql-logs 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 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 yo
communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start 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 http://askubuntu.com/questions/812001/how-to-see-mysql-error-logs About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Ask Ubuntu Questions Tags Users Badges Unanswered Ask Question _ Ask Ubuntu is http://stackoverflow.com/questions/5441972/how-to-see-log-files-in-mysql a question and answer site for Ubuntu users and developers. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best error log answers are voted up and rise to the top How to see mysql error logs? up vote 0 down vote favorite Sorry if this is a wrong place to ask. I use Ubuntu 16.04, with very little knowledge of linux system, I depend on webmin to host my website. Recently there has been a problem where mysql won't start, so I am trying to look into the mysql error log error logs to get a clue about what is wrong. My first question is: What is the general way to find where the error log is? I've done a lot of search but it seems to me in different system, and with different setting, these error logs could be in different places, and the filename is also different. Although I've managed to find them under /var/log/mysql/ (which is different from every source I was able to find), I'd like to know how to find these logs' location in general. I think there should be some configuration file in control of this, right? Besides, on some webpage a mysql.log file is mentioned, but I can't find where it is. Secondly, under /var/log/mysql, there are files like error.log and error.log.1.gz, error.log.2.gz. Except the error.log file, in order to read other files I have to extract them first. Is there any way, like some mysql command , to read them directly? mysql log share|improve this question asked Aug 14 at 0:36 shenkwen 1395 add a comment| 1 Answer 1 active oldest votes up vote 1 down vote accepted Although I've managed to find them under /var/log/mysql/ (which is different from ever
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 Stack Overflow Questions Jobs 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; it only takes a minute: Sign up How to see log files in MySQL? up vote 69 down vote favorite 28 I've read that Mysql server creates a log file where it keeps a record of all activities - like when and what queries execute. Can anybody tell me where it exists in my system? How can I read it? Basically, I need to back up the database with different input [backup between two dates] so I think I need to use log file here, that's why I want to do it... I think this log must be secured somehow because sensitive information such as usernames and password may be logged [if any query require this]; so may it be secured, not easily able to be seen? I have root access to the system, how can I see the log? When I try to open /var/log/mysql.log it is empty. This is my config file: [client] port = 3306 socket = /var/run/mysqld/mysqld.sock [mysqld_safe] socket = /var/run/mysqld/mysqld.sock nice = 0 [mysqld] log = /var/log/mysql/mysql.log binlog-do-db=zero user = mysql socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /var/lib/mysql tmpdir = /tmp skip-external-locking bind-address = 127.0.0.1 # # * Fine Tuning # key_buffer = 16M max_allowed_packet = 16M thread_stack = 192K thread_cache_size = 8 general_log_file = /var/log/mysql/mysql.log general_log = 1 mysql logging share|improve this question edited Jul 6 at 12:04 kenorb 21.6k8152125 asked Mar 26 '11 at 11:21 Arjun 90211025 add a comment| 8 Answers 8 active oldest votes up vote 33 down vote accepted Here is a simple way to enable them. In mysql we need to see often 3 logs which are mostly needed during any project development. The Error L