1、mysql安装与主从复制说明文档一 Linux下安装mysql数据库1安装netsarangxmanager.exe，使用Xshell连接服务器，Xftp拷贝文件。2拷贝安装文件Xftp把f文件拷贝到/etc 目录下，mysqlrpm拷贝到/root目录下。（附录：f文件内容：datadir = /app/data 为数据库文件目录设定）#BEGIN CONFIG INFO#DESCR: 4GB RAM, InnoDB only, ACID, few connections, heavy queries#TYPE: SYSTEM#END CONFIG INFO# This is a MySQL
2、 example config file for systems with 4GB of memory# running mostly MySQL using InnoDB only tables and performing complex# queries with few connections.# # MySQL programs look for option files in a set of# locations which depend on the deployment platform.# You can copy this option file to one of th
3、ose# locations. For information about these locations, see:# # In this file, you can use all long options that a program supports.# If you want to know which options a program supports, run the program# with the -help option.# More detailed information about the individual options can also be# found
4、 in the manual.# The following options will be read by MySQL client applications.# Note that only client applications shipped by MySQL are guaranteed# to read this section. If you want your own MySQL client program to# honor these values, you need to specify it as an option during the# MySQL client
5、library initialization.#client#password = your_passwordport = 3306socket = /var/lib/mysql/mysql.sock#default-character-set=gbk# * Application-specific options follow here *# The MySQL server#mysqld#skip-grant-tables# generic configuration optionsport = 3306socket = /var/lib/mysql/mysql.sockdatadir =
6、 /app/data# back_log is the number of connections the operating system can keep inlower_case_table_name=1sql_mode=oracleinnodb_file_per_table=1character_set_server=utf8skip-host-cacheskip-name-resolve# the listen queue, before the MySQL connection manager thread has# processed them. If you have a ve
7、ry high connection rate and experience# connection refused errors, you might need to increase this value.# Check your OS documentation for the maximum value of this parameter.# Attempting to set back_log higher than your operating system limit# will have no effect.back_log = 50#skip-grant-tables # D
8、ont listen on a TCP/IP port at all. This can be a security# enhancement, if all processes that need to connect to mysqld run# on the same host. All interaction with mysqld must be made via Unix# sockets or named pipes.# Note that using this option without enabling named pipes on Windows# (via the en
9、able-named-pipe option) will render mysqld useless!#skip-networking# The maximum amount of concurrent sessions the MySQL server will# allow. One of these connections will be reserved for a user with# SUPER privileges to allow the administrator to login even if the# connection limit has been reached.
10、max_connections = 32000slow-query-log# Maximum amount of errors allowed per host. If this limit is reached,# the host will be blocked from connecting to the MySQL server until# FLUSH HOSTS has been run or the server was restarted. Invalid# passwords and other errors during the connect phase result i
11、n# increasing this value. See the Aborted_connects status variable for# global counter.max_connect_errors = 10# The number of open tables for all threads. Increasing this value# increases the number of file descriptors that mysqld requires.# Therefore you have to make sure to set the amount of open
12、files# allowed to at least 4096 in the variable open-files-limit in# section mysqld_safetable_open_cache = 4096# Enable external file level locking. Enabled file locking will have a# negative impact on performance, so only use it in case you have# multiple database instances running on the same file
13、s (note some# restrictions still apply!) or if you use other software relying on# locking MyISAM tables on file level.#external-locking# The maximum size of a query packet the server can handle as well as# maximum query size server can process (Important when working with# large BLOBs). enlarged dyn
14、amically, for each connection.max_allowed_packet = 16M# The size of the cache to hold the SQL statements for the binary log# during a transaction. If you often use big, multi-statement# transactions you can increase this value to get more performance. All# statements from transactions are buffered i
15、n the binary log cache and# are being written to the binary log at once after the COMMIT. If the# transaction is larger than this value, temporary file on disk is used# instead. This buffer is allocated per connection on first update# statement in transactionbinlog_cache_size = 16M # modified by liu
16、gh2012.03.24 14:30#binlog_cache_size = 1M# Maximum allowed size for a single HEAP (in memory) table. This option# is a protection against the accidential creation of a very large HEAP# table which could otherwise use up all memory resources.max_heap_table_size = 512M# Size of the buffer used for doi
17、ng full table scans.# Allocated per thread, if a full scan is needed.read_buffer_size = 2M# When reading rows in sorted order after a sort, the rows are read# through this buffer to avoid disk seeks. You can improve ORDER BY# performance a lot, if set this to a high value.# Allocated per thread, whe
18、n needed.read_rnd_buffer_size = 16M# Sort buffer is used to perform sorts for some ORDER BY and GROUP BY# queries. If sorted data does not fit into the sort buffer, a disk# based merge sort is used instead - See the Sort_merge_passes# status variable. Allocated per thread if sort is needed.sort_buff
19、er_size = 1024M# This buffer is used for the optimization of full JOINs (JOINs without# indexes). Such JOINs are very bad for performance in most cases# anyway, but setting this variable to a large value reduces the# performance impact. See the Select_full_join status variable for a# count of full J
20、OINs. Allocated per thread if full join is foundjoin_buffer_size = 256M# How many threads we should keep in a cache for reuse. When a client# disconnects, the clients threads are put in the cache if there arent# more than thread_cache_size threads from before. This greatly reduces# the amount of thr
21、ead creations needed if you have a lot of new# connections. (Normally this doesnt give a notable performance# improvement if you have a good thread implementation.)thread_cache_size = 1024# This permits the application to give the threads system a hint for the# desired number of threads that should
22、be run at the same time. This# value only makes sense on systems that support the thread_concurrency()# function call (Sun Solaris, for example).# You should try number of CPUs*(2.4) for thread_concurrencythread_concurrency = 48# Query cache is used to cache SELECT results and later return them# wit
23、hout actual executing the same query once again. Having the query# cache enabled may result in significant speed improvements, if your# have a lot of identical queries and rarely changing tables. See the# Qcache_lowmem_prunes status variable to check if the current value# is high enough for your loa
24、d.# Note: In case your tables change very often or if your queries are# textually different every time, the query cache may result in a# slowdown instead of a performance improvement.query_cache_size = 1024M# Only cache result sets that are smaller than this limit. This is to# protect the query cach
25、e of a very large result set overwriting all# other query results.query_cache_limit = 2M# Minimum word length to be indexed by the full text search index.# You might wish to decrease it if you need to search for shorter words.# Note that you need to rebuild your FULLTEXT index, after you have# modif
26、ied this value.ft_min_word_len = 4# If your system supports the memlock() function call, you might want to# enable this option while running MySQL to keep it locked in memory and# to avoid potential swapping out in case of high memory pressure. Good# for performance.#memlock# Table type which is use
27、d by default when creating new tables, if not# specified differently during the CREATE TABLE statement.#default-storage-engine = InnoDB# Thread stack size to use. This amount of memory is always reserved at# connection time. MySQL itself usually needs no more than 64K of# memory, while if you use yo
28、ur own stack hungry UDF functions or your# OS requires more stack for some operations, you might need to set this# to a higher value.thread_stack = 192K# Set the default transaction isolation level. Levels available are:# READ-UNCOMMITTED, READ-COMMITTED, REPEATABLE-READ, SERIALIZABLE transaction_is
29、olation = REPEATABLE-READ# transaction_isolation = READ-COMMITTED# Maximum size for internal (in-memory) temporary tables. If a table# grows larger than this value, it is automatically converted to disk# based table This limitation is for a single table. There can be many# of them.tmp_table_size = 5
30、12M# Enable binary logging. This is required for acting as a MASTER in a# replication configuration. You also need the binary log if you need# the ability to do point in time recovery from your latest backup.log-bin=mysql-bin# binary logging format - mixed recommendedbinlog_format=mixed# If youre us
31、ing replication with chained slaves (A-B-C), you need to# enable this option on server B. It enables logging of updates done by# the slave thread into the slaves binary log.#log_slave_updates# Enable the full query log. Every query (even ones with incorrect# syntax) that the server receives will be logged. This is useful for# debugging, it is usually disabled in production use.#log# Print warnings to the error log file. If you have any problem with# MySQL you should
