linux环境搭建mysql5.7总结
以下安装方式，在阿里云与腾讯云服务器上都测试可用。
一、进入到opt目录下，执行：
[root@master opt]# wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.26-linux-glibc2.12-x86_64.tar.gz
解压：
[root@master opt]# tar -xvf mysql-5.7.26-linux-glibc2.12-x86_64.tar.gz
修改名字：
[root@master opt]# mv mysql-5.7.26-linux-glibc2.12-x86_64/ mysql-5.7.26
移动到/usr/local
[root@master opt]# mv mysql-5.7.26 /usr/local/
创建mysql用户组和用户：
[root@master opt]# groupadd mysql
[root@master opt]# useradd -r -g mysql mysql
进入/usr/local/mysql-5.7.26/目录下，创建一个/data/mysql目录
[root@master opt]# cd /usr/local/mysql-5.7.26/
[root@master opt]# mkdir data
[root@master opt]# cd data/
[root@master opt]# mkdir mysql
对该目录进行授权设置：
[root@master opt]# chown mysql:mysql -R ../data/mysql/
设置vim /etc/my.cnf参数
[mysqld]
bind-address=xxx.xxx.xxx.xxx
port=3306
user=mysql
basedir=/usr/local/mysql-5.7.26
datadir=/usr/local/mysql-5.7.26/data/mysql
socket=/tmp/mysql.sock
log-error=/usr/local/mysql-5.7.26/data/mysql/mysql.err
pid-file=/usr/local/mysql-5.7.26/data/mysql/mysql.pid
#character config
character_set_server=utf8
symbolic-links=0
[client]
socket=/tmp/mysql.sock
初始化mysql:
进入到/usr/local/mysql-5.7.26/bin目录，执行
[root@master opt]# ./mysqld --defaults-file=/etc/my.cnf --basedir=/usr/local/mysql-5.7.26/ --datadir=/usr/local/mysql-5.7.26/data/mysql/ --user=mysql --initialize
获取初始化生成的密码：zuN4F%E)R!q3
[root@master bin]# cat /usr/local/mysql-5.7.26/data/mysql/mysql.err
2021-10-20T08:09:00.331096Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2021-10-20T08:09:01.371244Z 0 [Warning] InnoDB: New log files created, LSN=45790
2021-10-20T08:09:01.495582Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2021-10-20T08:09:01.557026Z 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: fc058b1f-317c-11ec-adb1-00163e061e0a.
2021-10-20T08:09:01.558519Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2021-10-20T08:09:01.558927Z 1 [Note] A temporary password is generated for root@localhost: zuN4F%E)R!q3
先进入/usr/local/mysql-5.7.26/support-files目录，看到有mysql.server脚本——
[root@master mysql-5.7.26]# pwd
/usr/local/mysql-5.7.26
[root@master mysql-5.7.26]# ll
total 56
drwxr-xr-x 2 root root 4096 Oct 20 15:59 bin
-rw-r--r-- 1 7161 31415 17987 Apr 13 2019 COPYING
drwxr-xr-x 3 root root 4096 Oct 20 15:29 data
drwxr-xr-x 2 root root 4096 Oct 20 15:27 docs
drwxr-xr-x 3 root root 4096 Oct 20 15:27 include
drwxr-xr-x 5 root root 4096 Oct 20 15:27 lib
drwxr-xr-x 4 root root 4096 Oct 20 15:27 man
-rw-r--r-- 1 7161 31415 2478 Apr 13 2019 README
drwxr-xr-x 28 root root 4096 Oct 20 15:27 share
drwxr-xr-x 2 root root 4096 Oct 20 15:27 support-files
[root@master mysql-5.7.26]# cd support-files/
[root@master support-files]# ll
total 24
-rw-r--r-- 1 7161 31415 773 Apr 13 2019 magic
-rwxr-xr-x 1 7161 31415 1061 Apr 13 2019 mysqld_multi.server
-rwxr-xr-x 1 7161 31415 894 Apr 13 2019 mysql-log-rotate
-rwxr-xr-x 1 7161 31415 10576 Apr 13 2019 mysql.server
启动执行：
[root@master support-files]# ./mysql.server start
Starting MySQL. [ OK ]
然后切换到/usr/local/mysql-5.7.26/bin目录，执行进入mysql的指令：
[root@master bin]# ./mysql -u root -p
最后，就是修改密码操作了：
mysql> SET PASSWORD = PASSWORD('xxx');
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> ALTER USER 'xxx'@'localhost' PASSWORD EXPIRE NEVER;
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
设置远程访问：
mysql> grant all on *.* to xxx@'%' identified by 'xxx' with grant option;
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
设置开机启动：
先将/usr/local/mysql-5.7.26/support-files/ 文件夹下的mysql.server文件复制到 /etc/rc.d/init.d/ 目录下
[root@master init.d]# cp /usr/local/mysql-5.7.26/support-files/mysql.server /etc/rc.d/init.d/
[root@master init.d]# ll
total 40
-rwxr-xr-x 1 root root 2415 Jun 30 21:19 aegis
-rw-r--r--. 1 root root 18434 Jul 24 2020 functions
lrwxrwxrwx 1 root root 35 Aug 10 11:14 jexec -> /usr/java/latest/.java/init.d/jexec
-rwxr-xr-x 1 root root 10576 Oct 20 16:23 mysql.server
-rw-r--r--. 1 root root 1161 Mar 23 2021 README
将mysql.server修改为mysqld
[root@master init.d]# mv mysql.server mysqld
添加为服务: chkconfig --add mysqld
查看服务列表: chkconfig --list
[root@master init.d]# chkconfig --list
Note: This output shows SysV services only and does not include native
systemd services. SysV configuration data might be overridden by native
systemd configuration.
If you want to list systemd services use 'systemctl list-unit-files'.
To see services enabled on particular target use
'systemctl list-dependencies [target]'.
aegis 0:off 1:off 2:on 3:on 4:on 5:on 6:off
jexec 0:off 1:on 2:on 3:on 4:on 5:on 6:off
mysqld 0:off 1:off 2:on 3:on 4:on 5:on 6:off
3、4、5状态为 on 则表示设置开机启动成功。
