mysql 多实例

mkdir /data/3307

mkdir /data/3307/data

mkdir /data/3307/var

cp /etc/my.cnf /data/3307/my.cnf

vi /data/3307/my.cnf

[client]
#password   = your_password
port        = 3307
socket      = /data/3307/mysql.sock

[mysqld]
port        = 3307
socket      = /data/3307/mysql.sock
datadir = /data/3307/data
skip-external-locking
key_buffer_size = 64M
max_allowed_packet = 200M
table_open_cache = 256
sort_buffer_size = 1M
net_buffer_length = 8K
read_buffer_size = 1M
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 16M
thread_cache_size = 32
query_cache_size = 32M
tmp_table_size = 64M
performance_schema_max_table_instances = 500
sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'

explicit_defaults_for_timestamp = true
#skip-networking
max_connections = 500
max_connect_errors = 100
open_files_limit = 65535

log-bin=mysql-bin
binlog_format=mixed
server-id   = 1
expire_logs_days = 10
early-plugin-load = ""

#loose-innodb-trx=0
#loose-innodb-locks=0
#loose-innodb-lock-waits=0
#loose-innodb-cmp=0
#loose-innodb-cmp-per-index=0
#loose-innodb-cmp-per-index-reset=0
#loose-innodb-cmp-reset=0
#loose-innodb-cmpmem=0
#loose-innodb-cmpmem-reset=0
#loose-innodb-buffer-page=0
#loose-innodb-buffer-page-lru=0
#loose-innodb-buffer-pool-stats=0
#loose-innodb-metrics=0
#loose-innodb-ft-default-stopword=0
#loose-innodb-ft-inserted=0
#loose-innodb-ft-deleted=0
#loose-innodb-ft-being-deleted=0
#loose-innodb-ft-config=0
#loose-innodb-ft-index-cache=0
#loose-innodb-ft-index-table=0
#loose-innodb-sys-tables=0
#loose-innodb-sys-tablestats=0
#loose-innodb-sys-indexes=0
#loose-innodb-sys-columns=0
#loose-innodb-sys-fields=0
#loose-innodb-sys-foreign=0
#loose-innodb-sys-foreign-cols=0

default_storage_engine = InnoDB
innodb_file_per_table = 1
innodb_data_home_dir = /data/3307/var
innodb_data_file_path = ibdata1:10M:autoextend
innodb_log_group_home_dir = /data/3307/var
innodb_buffer_pool_size = 256M
innodb_log_file_size = 64M
innodb_log_buffer_size = 8M
innodb_flush_log_at_trx_commit = 1
innodb_lock_wait_timeout = 50

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash

[myisamchk]
key_buffer_size = 64M
sort_buffer_size = 1M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout

初始化数据库

/usr/local/mysql/bin/mysqld --defaults-file=/data/3307/my.cnf --user=mysql --basedir=/usr/local/mysql --datadir=/data/3307/data --initialize

ps：该步骤会生成root账户密码

启动实例

/usr/local/mysql/bin/mysqld --defaults-file=/data/3307/my.cnf --user=mysql

登录

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

修改密码

set password for root@localhost = password('123');  

授权远程访问

grant all privileges on *.* to 'root'@'%' identified by '123' with grant option;
flush privileges;