配置文件

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 log - should be very few entries.

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/mysql/.

Read the manual for more InnoDB related options. There are many!

* Security Features

Read the manual, too, if you want chroot!

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socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
datadir = /var/lib/mysql
tmpdir = /tmp
lc-messages-dir = /usr/share/mysql
skip-external-locking
skip-name-resolve

Instead of skip-networking the default is now to listen only on

localhost which is more compatible and is not less secure.

bind-address = 127.0.0.1

* Fine Tuning

key_buffer_size = 16M
max_allowed_packet = 16M
thread_stack = 192K
thread_cache_size = 8

This replaces the startup script and checks MyISAM tables if needed

the first time they are touched

myisam-recover-options = BACKUP

max_connections = 100

table_cache = 64

thread_concurrency = 10

* Query Cache Configuration

query_cache_limit = 1M
query_cache_size = 16M

* Logging and Replication

Both location gets rotated by the cronjob.

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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 would actually understand and use.

For explanations see

http://dev.mysql.com/doc/mysql/en/server-system-variables.html

This will be passed to all mysql clients

It has been reported that passwords should be enclosed with ticks/quotes

escpecially if they contain "#" chars...

Remember to edit /etc/mysql/debian.cnf when changing the socket location.

Here is entries for some specific programs

The following values assume you have at least 32M ram

[mysqld_safe]
socket = /var/run/mysqld/mysqld.sock
nice = 0

[mysqld]

* Basic Settings

user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306

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socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
datadir = /var/lib/mysql
tmpdir = /tmp
lc-messages-dir = /usr/share/mysql
skip-external-locking
skip-name-resolve

Instead of skip-networking the default is now to listen only on

localhost which is more compatible and is not less secure.

bind-address = 127.0.0.1

* Fine Tuning

key_buffer_size = 16M
max_allowed_packet = 16M
thread_stack = 192K
thread_cache_size = 8

This replaces the startup script and checks MyISAM tables if needed

the first time they are touched

myisam-recover-options = BACKUP

max_connections = 100

table_cache = 64

thread_concurrency = 10

* Query Cache Configuration

query_cache_limit = 1M
query_cache_size = 16M

* Logging and Replication

Both location gets rotated by the cronjob.

                                                                                                                                                     33,1          45%

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 log - should be very few entries.

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/mysql/.

Read the manual for more InnoDB related options. There are many!

* Security Features

Read the manual, too, if you want chroot!

                                                                                                                                                     65,1          90%

Read the manual, too, if you want chroot!

chroot = /var/lib/mysql/

For generating SSL certificates I recommend the OpenSSL GUI "tinyca".

ssl-ca=/etc/mysql/cacert.pem

ssl-cert=/etc/mysql/server-cert.pem

ssl-key=/etc/mysql/server-key.pem