ubuntu kylin 14.10下多个mysql 5.7.14安装教程

前文已述，因为需要测试mysql的主从配置方案，所以要安装多个mysql。这次是在ubuntu kylin 14.10上安装多个mysql 5.7.14。

系统环境：ubuntu kylin 14.10，64位系统
mysql版本：5.7.14社区版
mysql下载地址：,选择 linux - generic,下载612.9m的mysql-5.7.14-linux-glibc2.5-x86_64.tar.gz
mysql官方安装文档：.按照官方安装文档进行即可，只是一些shell命令做了修改，对ubuntu来说，大部分命令都需要在前面增加sudo

shell> sudo groupadd mysql
shell> sudo useradd -r -g mysql -s /bin/false mysql
shell> cd /usr/local
shell> sudo tar -zxvf /path/to/mysql-version-os.tar.gz

shell> sudo mv mysql-5.7.14-linux-glibc2.5-x86_64 mysql-5.7.14-linux-glibc2.5-x86_64-3306 #将mysql的目录改了一下名
shell> sudo ln -s mysql-5.7.14-linux-glibc2.5-x86_64-3306 mysql-3306
shell> cd mysql-3306
shell> sudo mkdir mysql-files
shell> sudo chmod 750 mysql-files
shell> sudo chown -r mysql:mysql .
shell> sudo cp support-files/my-default.cnf ./my.cnf #copy一份my.cnf

接着编辑my.cnf,打开basedir，datadir，port等项，按如下配置：
basedir = /usr/local/mysql-3306
datadir = /usr/local/mysql-3306/data
port = 3306
server_id = 11

然后开始初始化3306端口上的mysql：
shell> sudo bin/mysqld --defaults-file=/usr/local/mysql-3306/my.cnf --initialize --user=mysql
2016-07-29t15:38:48.896585z 0 [warning] timestamp with implicit default value is deprecated. please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2016-07-29t15:38:48.896672z 0 [warning] 'no_zero_date', 'no_zero_in_date' and 'error_for_division_by_zero' sql modes should be used with strict mode. they will be merged with strict mode in a future release.
2016-07-29t15:38:48.896682z 0 [warning] 'no_auto_create_user' sql mode was not set.
2016-07-29t15:38:50.498675z 0 [warning] innodb: new log files created, lsn=45790
2016-07-29t15:38:50.890849z 0 [warning] innodb: creating foreign key constraint system tables.
2016-07-29t15:38:51.062752z 0 [warning] no existing uuid has been found, so we assume that this is the first time that this server has been started. generating a new uuid: 8c708a13-55a2-11e6-835e-a0481ced538c.
2016-07-29t15:38:51.088854z 0 [warning] gtid table is not ready to be used. table 'mysql.gtid_executed' cannot be opened.
2016-07-29t15:38:51.090179z 1 [note] a temporary password is generated for root@localhost: pjlwjf%q;1t）

shell> sudo bin/mysql_ssl_rsa_setup --defaults-file=/usr/local/mysql-3306/my.cnf
generating a 2048 bit rsa private key
.........+++
.......................+++
writing new private key to 'ca-key.pem'
-----
generating a 2048 bit rsa private key
..........+++
..............................................................+++
writing new private key to 'server-key.pem'
-----
generating a 2048 bit rsa private key
................................................+++
........................................+++
writing new private key to 'client-key.pem'
-----

shell> sudo chown -r root .
shell> sudo chown -r mysql data mysql-files
shell> sudo bin/mysqld_safe --user=mysql & #启动mysql，在后台运行
# next command is optional
shell> cp support-files/mysql.server /etc/init.d/mysql.server

2.开始登录mysql进行相关操作

/usr/local/mysql-3306> bin/mysql -uroot -p
注意在执行bin/mysqld初始化时，在命令行最后的提示中给出了一个临时口令，输入之后即可登录。登录mysql之后，要求立即修改密码，否则不能进行任何操作。执行下面的命令修改'root'@'localhost'的密码：

mysql> set password = password('your new password');
mysql> alter user 'root'@'localhost' password expire never;
mysql> flush privileges;

为了可以远程登录，增加一个'root'@'%'账号：

mysql> grant all privileges on *.* to 'root'@'%' identified by 'your new password' with grant option;

3.按照上面的办法，继续解压安装mysql-5.7.14-linux-glibc2.5-x86_64.tar.gz，并且配置为3307，3308,3309端口，就可以安装多个mysql了。

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