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| ## MySQL database server configuration file. | ||
| ## | ||
| ## ============================================================================== | ||
| ## ============================================================================== | ||
| ## Base configuration from voku (http://suckup.de/) | ||
| ## | ||
| ## This is an *optimised* config: | ||
| ## - various other useful settings | ||
| ## | ||
| ## ============================================================================== | ||
| ## | ||
| ## 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 | ||
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| ## 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. | ||
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| ## ----------------------------------------------- | ||
| ## Here is entries for some specific programs | ||
| ## The following values assume you have at least 1GB ram | ||
| ## ----------------------------------------------- | ||
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| [client] | ||
| port = 3306 | ||
| socket = /var/run/mysqld/mysqld.sock | ||
| ## Default is Latin1, if you need UTF-8 set this (also in server section) | ||
| #default-character-set = utf8 | ||
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| ## This was formally known as [safe_mysqld]. Both versions are currently parsed. | ||
| [mysqld_safe] | ||
| socket = /var/run/mysqld/mysqld.sock | ||
| nice = 0 | ||
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| [mysqld] | ||
| ## ============================================================================== | ||
| ## * Basic Settings | ||
| ## ============================================================================== | ||
| user = mysql | ||
| pid-file = /var/run/mysqld/mysqld.pid | ||
| socket = /var/run/mysqld/mysqld.sock | ||
| port = 3306 | ||
| basedir = /usr | ||
| datadir = /var/lib/mysql | ||
| tmpdir = /tmp | ||
| language = /usr/share/mysql/english | ||
| ## Disable external locking (system locking) in MySQL, affects only MyISAM | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/external-locking.html | ||
| #skip-locking | ||
| skip-external-locking | ||
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| ## Disable 'INSERT DELAYED' statements in MySQL | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/insert-delayed.html | ||
| max_delayed_threads = 0 | ||
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| ## ============================================================================== | ||
| ## * Character sets | ||
| ## ============================================================================== | ||
| ## Default is Latin1, if you need UTF-8 set all this (also in client section) | ||
| ## | ||
| #default-character-set = utf8 | ||
| #default-collation = utf8_general_ci | ||
| #character_set_server = utf8 | ||
| #collation_server = utf8_general_ci | ||
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| ## Force MySQL to generate short (pre-4.1) password hashes for new passwords, | ||
| ## useful for compatibility when the server must support clients < MySQL 4.1 | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/old-client.html | ||
| #old_passwords = 1 | ||
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| ## Do not resolve host names when checking client connections, use only IP | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/dns.html | ||
| #skip-name-resolve | ||
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| ## Instead of skip-networking the default is now to listen only on | ||
| ## localhost which is more compatible and is not less secure. | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/can-not-connect-to-server.html | ||
| bind-address = 127.0.0.1 | ||
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| ## ============================================================================== | ||
| ## * MyISAM | ||
| ## ============================================================================== | ||
| ## This replaces the startup script and checks MyISAM tables if needed | ||
| ## the first time they are touched. On error, make copy and try a repair. | ||
| myisam_recover = BACKUP | ||
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| ## ============================================================================== | ||
| ## * Fine Tuning | ||
| ## ============================================================================== | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/server-parameters.html | ||
| ## | ||
| ## Info: calculate memory use -> | ||
| ## memory=key_buffer+(sort_buffer_size+read_buffer_size)*max_connections | ||
| ## | ||
| ## Maximum permitted number of simultaneous client connections for MySQL | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/too-many-connections.html | ||
| ## default: 151 | ||
| ## range: 1 .. 100000 | ||
| max_connections = 50 | ||
| ## The maximum number of simultaneous connections permitted | ||
| ## default: 0 | ||
| ## range: 0 .. 4294967295 | ||
| max_user_connections = 40 | ||
| # The number of outstanding connection requests MySQL can have, it's the size | ||
| # of the listen() queue for incoming TCP/IP connections. The maximum value on | ||
| # Linux is directed by net.ipv4.tcp_max_syn_backlog (1024 by default) | ||
| ## default: 50 | ||
| ## range: 1 .. 65535 | ||
| back_log = 256 | ||
| ## Info: Reduced timeout to prevent idle clients holding connections | ||
| ## Number of seconds MySQL server waits for a connect packet before responding | ||
| ## with 'bad handshake' | ||
| ## default 10 | ||
| connect_timeout = 15 | ||
| ## Number of second MySQL server waits for activity on a *NONINTERACTIVE* conn | ||
| ## default: 28800 | ||
| ## range: 1 .. 2147483 | ||
| wait_timeout = 60 | ||
| ## Number of seconds MySQL server waits for activity on an *INTERACTIVE* conn | ||
| ## default: 28800 (min. 1) | ||
| interactive_timeout = 60 | ||
| ## Stack size for each thread. The default of 192KB (256KB for 64-bit systems) | ||
| ## is large enough for normal operation. If the thread stack size is too small, | ||
| ## it limits the complexity of the SQL statements that the server can handle, | ||
| ## the recursion depth of stored procedures, and other memory-consuming actions | ||
| ## default: 192K -> 32Bit & 256K -> 64Bit | ||
| thread_stack = 256K | ||
| ## How many threads the MySQL server should cache for reuse | ||
| ## default: 0 | ||
| ## range: 0 .. 16384 | ||
| thread_cache_size = 42 | ||
| ## Try number of CPU's*2 for thread_concurrency | ||
| ## default: 10 | ||
| ## range: 1 .. 512 | ||
| thread_concurrency = 2 | ||
| ## default: 2M (2097144) | ||
| sort_buffer_size = 4M | ||
| join_buffer_size = 4M | ||
| ## default 0.125M (131072) | ||
| ## range: 8200 .. 2147479552 | ||
| read_buffer_size = 1M | ||
| ## default: 0.25M (262144) | ||
| ## range: 8200 .. 4294967295 | ||
| read_rnd_buffer_size = 2M | ||
| ## default: 8M (8388608) | ||
| ## range: 4 .. 18446744073709547520 | ||
| myisam_sort_buffer_size = 64M | ||
| ## default: 8M (8388608) | ||
| ## range: 0 .. 18446744073709547520 | ||
| bulk_insert_buffer_size = 16M | ||
| ## Maximum size of internal in-memory temporary table in MySQL | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/internal-temporary-tables.html | ||
| ## default: system dependent | ||
| ## range: 1024 .. 4294967295 | ||
| tmp_table_size = 128M | ||
| ## This variable sets the maximum size to which user-created MEMORY | ||
| ## tables are permitted to grow. | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/internal-temporary-tables.html | ||
| ## deafult: 16M (16777216) | ||
| ## range: 16384 .. 1844674407370954752 | ||
| max_heap_table_size = 64M | ||
| ## Maximum number of temporary tables a client can keep open at the same time. | ||
| ## default: 32 | ||
| ## range: 1 .. 18446744073709547520 | ||
| max_tmp_tables = 64 | ||
| table_cache = 512 | ||
| ## alias for key_buffer_size | ||
| key_buffer = 128M | ||
| ## Controls the amount of memory allocated for MyISAM key cache/buffer size | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/myisam-key-cache.html | ||
| ## deafult: 8M (8388608) | ||
| ## range: 8 .. 4294967295 | ||
| key_buffer_size = 128M | ||
| ## Changes the number of file descriptors available to MySQL | ||
| ## default: 0 | ||
| ## range: 0 .. 65535 | ||
| open_files_limit = 8192 | ||
| ## default: 1 (AUTO) | ||
| ## range: 0 (NEVER) | 1 (AUTO) | 2 (ALWAYS) | ||
| #concurrent_insert = 1 | ||
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| ## ============================================================================== | ||
| ## * Query Cache Configuration | ||
| ## ============================================================================== | ||
| ## Cache only tiny result sets, so we can fit more in the query cache. | ||
| ## Enable it for vast improvement and it may be all you need to tweak. | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/query-cache-configuration.html | ||
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| ## for more write intensive setups, set to DEMAND or OFF | ||
| ## default: 1 | ||
| ## range: 0 (OFF) | 1 (ON) | 2 (DEMAND) | ||
| query_cache_type = 1 | ||
| ## Do not cache results that are larger than this number of bytes | ||
| ## default: 1M (1048576) | ||
| ## range: 0 .. 18446744073709547520 | ||
| query_cache_limit = 2M | ||
| ## The amount of memory allocated for caching query results | ||
| ## default: 0 | ||
| ## range: 0 .. 18446744073709547520 | ||
| query_cache_size = 128M | ||
| ## The minimum size for blocks allocated by the query cache | ||
| ## deafult: 4K (4096) | ||
| ## range: 512 .. 18446744073709547520 | ||
| #query_cache_min_res_unit = 4K | ||
| ## The allocation size of memory blocks that are allocated for objects | ||
| ## created during statement parsing and execution | ||
| ## default: 8K (8192) | ||
| ## range: 1024 .. 18446744073709547520 | ||
| #query_alloc_block_size = 8K | ||
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| ## ============================================================================== | ||
| ## * 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! | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/server-logs.html | ||
| #general_log_file = /var/log/mysql/mysql.log | ||
| #general_log = 1 | ||
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| ## Error logging can also goes to syslog due | ||
| ## to /etc/mysql/conf.d/mysqld_safe_syslog.cnf. | ||
| ## We do want to know about network errors and such | ||
| ## so disable produce additional warning messages to MySQL error log | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/error-log.html | ||
| log_error = /var/log/mysqld.log | ||
| log_warnings = 0 | ||
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| ## Enable the slow query log to see queries with especially long duration | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/query-log.html | ||
| #slow_query_log[={0|1}] | ||
| #slow_query_log_file = /var/log/mysql/mariadb-slow.log | ||
| #long_query_time = 10 | ||
| #log_slow_rate_limit = 1000 | ||
| #log_slow_verbosity = query_plan | ||
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| #log-queries-not-using-indexes | ||
| #log_slow_admin_statements | ||
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| ## 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 | ||
| #report_host = master1 | ||
| #auto_increment_increment = 2 | ||
| #auto_increment_offset = 1 | ||
| #log_bin = /var/log/mysql/mariadb-bin | ||
| #log_bin_index = /var/log/mysql/mariadb-bin.index | ||
| ## not fab for performance, but safer | ||
| #sync_binlog = 1 | ||
| expire_logs_days = 10 | ||
| max_binlog_size = 100M | ||
| ## slaves | ||
| #relay_log = /var/log/mysql/relay-bin | ||
| #relay_log_index = /var/log/mysql/relay-bin.index | ||
| #relay_log_info_file = /var/log/mysql/relay-bin.info | ||
| #log_slave_updates | ||
| #read_only | ||
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| ## If applications support it, this stricter sql_mode prevents some | ||
| ## mistakes like inserting invalid dates etc. | ||
| #sql_mode = NO_ENGINE_SUBSTITUTION,TRADITIONAL | ||
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| ## ============================================================================== | ||
| ## * 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! | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/optimizing-innodb.html | ||
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| default_storage_engine = InnoDB | ||
| ## The size in bytes of each log file in a log group in InnoDB | ||
| #innodb_log_file_size = 5M | ||
| ## InnoDB memory buffer (cache data and indexes of its tables), the larger you | ||
| ## set this value, the less disk I/O is needed to access data in tables. On a | ||
| ## dedicated database server, you may set this to up to 80% of the machine | ||
| ## physical memory size. | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/innodb-buffer-pool.html | ||
| ## http://www.mysqlperformanceblog.com/2007/11/03/choosing-innodb_buffer_pool_size/ | ||
| innodb_buffer_pool_size = 128M | ||
| ## Size of buffer that InnoDB uses to write to the log files on disk | ||
| #innodb_log_buffer_size = 4M | ||
| ## Store each InnoDB table and its indexes in its own file, by default InnoDB | ||
| ## tables and indexes are stored in system tablespace. | ||
| ## (Suggested by Jordi Prats from systemadmin.es) | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/innodb-multiple-tablespaces.html | ||
| innodb_file_per_table = 1 | ||
| # Full ACID support for InnoDB, for each transaction = commit + flush to disk | ||
| # 0 = write + flush once every second (best perfomance) | ||
| # 1 = write + flush after each commit (best durability + safe) | ||
| # 2 = write log buffer at every commit, but flush it once every second | ||
| innodb_flush_log_at_trx_commit = 1 | ||
| innodb_open_files = 400 | ||
| innodb_io_capacity = 400 | ||
| ## How InnoDB will flush data to the disk: by default uses fsync() causing | ||
| ## "double buffering" data in OS cache and buffer pool. O_DIRECT bypass OS cache | ||
| ## avoiding double buffering, tip suggested by Jordi Prats (systemadmin.es). | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/innodb-parameters.html | ||
| innodb_flush_method = O_DIRECT | ||
| ## Number of OS threads that can run concurrently inside the InnoDB engine, rest | ||
| ## of the threads have to wait in a FIFO queue for execution. The optimal | ||
| ## setting depends on the number of CPUs, number of disks, and the kind of load. | ||
| ## A recommended value is 2 times the number of CPUs plus the number of disks. | ||
| #innodb_thread_concurrency = 0 | ||
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| ## ============================================================================== | ||
| ## * Security Features | ||
| ## ============================================================================== | ||
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| ## Disable 'LOAD DATA LOCAL' feature on MySQL | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/load-data-local.html | ||
| local_infile = 0 | ||
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| ## Disable symbolic link support on MySQL | ||
| ## http://dev.mysql.com/doc/refman/5.5/en/symbolic-links.html | ||
| skip-symbolic-links | ||
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| # Do not permit SELECT statements that probably need to examine more than | ||
| # max_join_size rows, or row combinations or that are likely to do more than | ||
| # max_join_size disk seeks. Setting this variable to a value other than DEFAULT | ||
| # resets the value of sql_big_selects to 0 | ||
| ## deafault: 16777216 TB (18446744073709551615) | ||
| ## range: 1 .. 18446744073709551615 | ||
| max_join_size = 256M | ||
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| ## 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 | ||
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| [mysqldump] | ||
| quick | ||
| quote-names | ||
| max_allowed_packet = 16M | ||
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| [mysql] | ||
| #no-auto-rehash # faster start of mysql but no tab completition | ||
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| [isamchk] | ||
| key_buffer = 16M | ||
| #sort_buffer = 4M | ||
| #read_buffer = 2M | ||
| #write_buffer = 2M | ||
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| ## | ||
| ## * IMPORTANT: Additional settings that can override those from this file! | ||
| ## The files must end with '.cnf', otherwise they'll be ignored. | ||
| ## | ||
| !includedir /etc/mysql/conf.d/ |
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| ../conf.d |
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