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以/data/为mysql的多实例目录

mkdir -p /data/{3306,3307}/data tree /data /data 总的多实例根目录 ├── 3306 3306实例的目录 │ └── data 3306实例的数据目录 └── 3307 3307实例的目录 └── data 3307实例的数据目录

配置多实例配置文件

多实例配置文件中server-id不能相同

3306配置文件

vim /data/3306/my.cnf

[client]port            = 3306socket          = /data/3306/mysql.sock[mysql]no-auto-rehash[mysqld]user    = mysqlport    = 3306socket  = /data/3306/mysql.sockbasedir = /application/mysqldatadir = /data/3306/dataopen_files_limit    = 1024back_log = 600max_connections = 800max_connect_errors = 3000table_cache = 614external-locking = FALSEmax_allowed_packet =8Msort_buffer_size = 1Mjoin_buffer_size = 1Mthread_cache_size = 100thread_concurrency = 2query_cache_size = 2Mquery_cache_limit = 1Mquery_cache_min_res_unit = 2k#default_table_type = InnoDBthread_stack = 192K#transaction_isolation = READ-COMMITTEDtmp_table_size = 2Mmax_heap_table_size = 2Mlong_query_time = 1#log_long_format#log-error = /data/3306/error.log#log-slow-queries = /data/3306/slow.logpid-file = /data/3306/mysql.pidlog-bin = /data/3306/mysql-binrelay-log = /data/3306/relay-binrelay-log-info-file = /data/3306/relay-log.infobinlog_cache_size = 1Mmax_binlog_cache_size = 1Mmax_binlog_size = 1024Mexpire_logs_days = 7key_buffer_size = 16Mread_buffer_size = 1Mread_rnd_buffer_size = 1Mbulk_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_recoverlower_case_table_names = 1skip-name-resolveslave-skip-errors = 1032,1062,1007replicate-ignore-db=mysqlserver-id = 1innodb_additional_mem_pool_size = 4Minnodb_buffer_pool_size = 1Ginnodb_data_file_path = ibdata1:128M:autoextendinnodb_file_io_threads = 4innodb_thread_concurrency = 8innodb_flush_log_at_trx_commit = 2innodb_log_buffer_size = 2Minnodb_log_file_size = 32Minnodb_log_files_in_group = 3innodb_max_dirty_pages_pct = 90innodb_lock_wait_timeout = 120innodb_file_per_table = 0innodb_open_files = 500[mysqldump]quickmax_allowed_packet = 2M[mysqld_safe]log-error=/data/3306/mysql_3306.errpid-file=/data/3306/mysqld.pid

编辑MySQL启动文件

vim /data/3306/mysql

#!/bin/sh#initport=3306mysql_user="root"mysql_pwd="mysqltest"CmdPath="/application/mysql/bin"mysql_sock="/data/${port}/mysql.sock"#startup functionfunction_start_mysql(){    if [ ! -e "$mysql_sock" ];then      printf "Starting MySQL...\n"      /bin/sh ${CmdPath}/mysqld_safe --defaults-file=/data/${port}/my.cnf 2>&1 > /dev/null &    else      printf "MySQL is running...\n"      exit    fi}#stop functionfunction_stop_mysql(){    if [ ! -e "$mysql_sock" ];then       printf "MySQL is stopped...\n"       exit    else       printf "Stoping MySQL...\n"       ${CmdPath}/mysqladmin -u ${mysql_user} -p${mysql_pwd} -S /data/${port}/mysql.sock shutdown   fi}#restart functionfunction_restart_mysql(){    printf "Restarting MySQL...\n"    function_stop_mysql    sleep 2    function_start_mysql}case $1 instart)    function_start_mysql;;stop)    function_stop_mysql;;restart)    function_restart_mysql;;*)    printf "Usage: /data/${port}/mysql {start|stop|restart}\n"esac

多实例目录下的文件

tree /data/ /data/ ├── 3306 │ ├── data │ ├── my.cnf │ └── mysql └── 3307 ├── data ├── my.cnf └── mysql

授权mysql用户管理/data目录

chown -R mysql.mysql /data

给启动文件添加执行权限

find /data/ -type f -name “mysql”|xargs chmod 700 find /data/ -type f -name “mysql”|xargs chown root.root find /data/ -type f -name “mysql”|xargs ls -l -rwx------. 1 root root 1015 8月 22 14:18 /data/3306/mysql -rwx------. 1 root root 1015 8月 22 14:56 /data/3307/mysql

初始化MySQL多实例的数据库文件

cd /application/mysql/scripts/ ./mysql_install_db --basedir=/application/mysql/ --datadir=/data/3306/data --user=mysql ./mysql_install_db --basedir=/application/mysql/ --datadir=/data/3307/data --user=mysql 初始化后可以tree一下data目录，会新增许多基础文件 tree /data

启动数据库

/data/3306/mysql start /data/3307/mysql start 或 mysqld_safe --default-file=/data/3306/my.cnf mysqld_safe --default-file=/data/3307/my.cnf netstat -lanptu|grep 330 tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 51228/mysqld tcp 0 0 0.0.0.0:3307 0.0.0.0:* LISTEN 51947/mysqld

多实例登录

mysql -S /data/3306/mysql.sock mysql -S /data/3307/mysql.sock

为多实例root设置密码

mysqladmin -u root -S /data/3306/mysql.sock password ‘111111’ mysqladmin -u root -S /data/3307/mysql.sock password ‘222222’

设置密码后登录

mysql -S /data/3306/mysql.sock -uroot -p111111 远程登录 mysql -uroot -pmysqltest -h 10.125.192.50 -P3307

关闭指定端口mysql

mysqladmin -uroot -p111111 -S /data/3306/mysql.sock shutdown 或 /data/3307/mysql stop

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