MySQL多實例玩法

mysql多實例： 開啓多個不同的服務端口，運行多個mysql服務進程。 應用場景：業務訪問量不太大,節約成本 cat /etc/my.cnf [mysqld_multi] mysqld = /usr/bin/mysql_safe mysqladmin = /usr/bin/mysqladmin user = mysql [mysqld1] socket = /var/lib/mysql/mysql.sock port = 3306 pid-file = /var/lib/mysql/mysql.pid datadir = /var/lib/mysql user = mysql [mysql2] socket = /mnt/data/mysql/mysql.sock port = 3307 pid-file = /mnt/data/mysql/mysql.pid datadir = /mnt/data/mysql user = mysql [mysql3] socket = /mnt/data1/mysql/mysql.sock port = 3308 pid-file = /mnt/data1/mysql/mysql.pid datadir = /mnt/data1/mysql user = mysql 啓動： mysqld_multi --config-file=/data/mysql/my_multi.cnf start 1,2,3 缺點：耦合性太高 安裝多實例mysql： 一，按裝好mysql依賴： yum -y install *-devel 二，二進制安裝：（編譯安裝） mkdir /date/{3306,3307}/ cat /data/3306/mysql.cnf [client] port = 3306 socket = /data/3306/mysql.sock [mysql] no-auto-rehash [msyqld] user = mysql port = 3306 socket = /data/3306/mysql.sock basedir = /usr/local/mysql datadir = /data/3306/data open_files_limit = 1024 back_log = 600 max_connections = 800 max_connect_errors = 3000 table_cahe = 614 external-locking = FALST max_allowed_packet = 8M sort_buffer_size = 1M join_buffer_size = 1M thread_cache_size = 100 thread_concurrency = 2 query_cache_size = 2M query_cache_limit = 1M long_query_time = 1 log_long_format log-error = /data/3306/error.log log-slow-queries = /data/3306/slow.log pid-file = /data/3306/mysql.pid log-bin = /data/3306/mysql-bin relay-log = /data/3306/relay-bin relay-log-info-file =/data/3306/relay-log.info key_buffer_size = 16M read_buffer_size = 1M read_md_buffer_size = 1M bulk_insert_buffer_size = 1M myisam_sort_buffer_size = 1M myisam_max_sort_file_size = 10G myisam_max_extra_sort_file_size = 10G myisam_repair_threads = 1 myisam_recover lower_case_table_names =1 skip-name-resolve slave-skip-errors = 1032,1032 relicate-ignore-db = mysql server-id = 1 innodb_additional_mem_pool_size =4M innodb_buffer_pool_size =32M innodb_data_file_path = ibdata1:128M:autoextend innodb_file_io_threads = 4 innodb_thread_concurrency=8 innodb_flush_log_at_trx_commit=2 innodb_log_buffer_size=2M innodb_log_file_size=4M innodb_log_files_in_group=3 innodb_max_dirty_pages_pct=90 innodb_lock_wait_timeout=120 innodb_file_per_table=0 [mysqldump] quick max_allowed_packet=2M [mysqld_safe] log-error=/data/3306/mysql_ji3306.err pid-file=/data/3306/mysqld.pid cat /data/3307/mysql.cnf [client] port = 3307 socket = /data/3307/mysql.sock [mysql] no-auto-rehash [msyqld] user = mysql port = 3307 socket = /data/3307/mysql.sock basedir = /usr/local/mysql datadir = /data/3307/data open_files_limit = 1024 back_log = 600 (同上配置) 多實例啓動文件mysql服務： mysqld_safe --defaults-file=/data/3306/my.cnf 2>&1 >/dev/null & mysqld_safe --defaults-file=/data/3307/my.cnf 2>&1 >/dev/null & 停止： msyqladmin -u root -p123456 -S /data/3306/mysql.sock shutdown 授權： chown -R mysql.mysql /data/ 初始化： mysql_install_db --basedir=/application/mysql --datadir=/data/3306/data --user=mysql 登陸數據庫： mysql -S /data/3306/mysql.sock mysql -S /data/3307/mysql.sock