MySQL多实例安装

Mysql数据库多实列安装

1.环境

操作系统:Ubuntu14.04

MySQL版本:mysql5.6

2.新建MySQL目录

mkdir -p /data/mysql8005/data
mkdir /data/mysql8005/log
mkdir /data/mysql8005/conf.d

3.建立MySQL配置文件

cp /etc/my.cnf /data/mysql8005/
vim /data/mysql8005/my.cnf

[client]
#设置sock位置
socket          = /data/mysql8005/mysqld.sock
[mysqld_safe]
socket          = /data/mysql8005/mysqd.sock
nice            = 0

[mysqld]
user            = mysql
#设置pid文件为位置
pid-file        = /data/mysql8005/mysqld.pid
#设置sock文件位置
socket          = /data/mysql8005/mysqld.sock
#mysql监听端口
port            = 8005
basedir         = /usr
#mysql数据库文件存放位置
datadir         = /data/mysql8005/data
tmpdir          = /tmp
lc-messages-dir = /usr/share/mysql
character-set-client-handshake = FALSE
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci
init_connect='SET NAMES utf8mb4'
skip-external-locking
innodb_strict_mode = 0
slave_skip_errors = 1062,1146
binlog_ignore_db = information_schema,performance_schema,mysql
myisam_sort_buffer_size = 2048M
tmp_table_size = 512M
myisam_max_sort_file_size=30G
key_buffer              = 16M
max_allowed_packet      = 1024M
thread_stack            = 192K
thread_cache_size       = 8
myisam-recover         = BACKUP
max_connections        = 5000
query_cache_limit       = 1M
query_cache_size        = 16M
#mysql日志存放位置
log_error = /data/mysql8005/log/err5.log
server-id               = 12
log_bin                 =  mysql-my5bin.log
expire_logs_days        = 10
max_binlog_size         = 100M
#设置mysql目录位置
innodb_data_home_dir = /data/mysql8005
innodb_data_file_path=ibdata1:50M:autoextend
innodb_file_per_table = 1
innodb_buffer_pool_size = 30720M
innodb_log_file_size = 1024M
innodb_log_buffer_size = 512M
innodb_flush_log_at_trx_commit = 1
innodb_lock_wait_timeout = 50

[mysqldump]
quick
quote-names
max_allowed_packet      = 1024M

[mysql]
#no-auto-rehash # faster start of mysql but no tab completition
default-character-set = utf8mb4
[isamchk]
key_buffer              = 16M
#mysql配置文件目录，可以不配置
!includedir /data/mysql8005/conf.d/

3.授权MySQL读取权限

vim编辑/etc/apparmor.d/usr.sbin.mysqld文件，添加如下内容

添加完成后刷新apparmor配置：

service apparmor restart

4.初始化数据库

mysql_install_db --defaults-file=/data/mysql8005/my.cnf --basedir=/usr/ --datadir=/data/mysql8005/data --user=mysql

5.启动实列

mysqld_safe --defaults-file=/data/mysql8005/my.cnf --skip-grant-tables &
#--skip-grant-tables是为了跳过密码验证，先通过安全模式启动实列修改密码
无密码登录数据库
mysql -S /data/mysql8005/mysqd.sock –P 8005
修改root密码
mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('Chz2018!QAZqwe@#$');
mysql>quit

启动实列数据库：
mysqld_safe --defaults-file=/data/mysql8005/my.cnf &
关闭实列
mysqladmin -uroot -p –S /data/mysql8005/mysqd.sock shutdown
password:*******

重新启动实列
mysqld_safe --defaults-file=/data/mysql8005/my.cnf &

6.FAQ

FAQ FATAL ERROR: Could not find my-default cnf, could not find my-default cnf, fata error my-default cnf, fatal error could not find my-default cnf, mysql_install_db my-default cnf error
解决办法
vim /usr/share/mysql/my-default.cnf
[mysqld]
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES