Linux Java 服务器搭建-mysql（三）

上传数据库解压缩包
 
cd /usr/local/src 进入文件目录
解压 tar xvf mysql-5.7.21-linux-glibc2.12-x86_64.tar
再解压安装 tar -xzvf mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz 
运行结束出现 
mysql-5.7.21-linux-glibc2.12-x86_64/docs/INFO_BIN
mysql-5.7.21-linux-glibc2.12-x86_64/docs/INFO_SRC
[root@localhost src]#后 改名字为mysql
创建data目录
mkdir /usr/local/mysql/data
创建mysql用户组及其用户
groupadd mysql
useradd -r -g mysql mysql
初始化数据
#先安装一下这个东东，要不然初始化有可能会报错
yum install libaio


#手动编辑一下日志文件，什么也不用写，直接保存退出
cd /var/log/


vim mysqld.log
：wq


chmod 777 mysqld.log
chown mysql:mysql mysqld.log




cd /usr/local/src/mysql


[root@localhost mysql] ./bin/mysql_install_db --user=mysql --basedir=/usr/local/src/mysql/ --datadir=/usr/local/src/mysql/data/


2016-01-20 02:47:35 [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize
2016-01-20 02:47:45 [WARNING] The bootstrap log isn't empty:
2016-01-20 02:47:45 [WARNING] 2016-01-19T18:47:36.732678Z 0 [Warning] --bootstrap is deprecated. Please consider using --initialize instead
2016-01-19T18:47:36.750527Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000)
2016-01-19T18:47:36.750560Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000)
MySQL的服务脚本放到系统服务中


cp -a ./support-files/mysql.server /etc/init.d/mysqld
修改my.cnf文件


找到cd etc/my.cnf 文件 内容换成如下
#复制以下内容


[client]
port = 3306
socket = /tmp/mysql.sock
default-character-set = utf8mb4 


[mysql] 
default-character-set = utf8mb4 


[mysqld]
#character_set_server=utf8
#init_connect='SET NAMES utf8'
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data
socket=/tmp/mysql.sock
#log-error=/var/log/mysqld.log
#pid-file=/var/run/mysqld/mysqld.pid
#不区分大小写
lower_case_table_names = 1


max_connections=5000


default-time_zone = '+8:00'
#支持富文本格式插入
character-set-client-handshake = FALSE 
character-set-server = utf8mb4 
collation-server = utf8mb4_unicode_ci 
init_connect='SET NAMES utf8mb4'
max_allowed_packet = 1G
innodb_log_file_size = 265M             ##这个配置由原来的1m 改为30M
innodb_log_buffer_size = 512M
innodb_file_per_table = 1  
innodb_file_format = Barracuda
wait_timeout=1814400  
interactive_timeout=1814400 
sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
创建In
ln -s /usr/local/mysql/  /usr/bin/
启动服务
service mysqld start 
service mysqld stop
service mysqld restart  重启


初始化密码
mysql5.7会生成一个初始化密码，在root中.mysql_secret文件中。
[root@localhost ~]# cat /root/.mysql_secret
# Password set for user 'root@localhost' at 2017-03-16 00:52:34 
ws;fmT7yh0CM
最后一行：root@localhost: 这里就是初始密码，一定复制下来


5BiJYi2yGMpD
登录并修改密码
[root@localhost ~]# /usr/local/mysql/bin/mysql -uroot -p 你在上面看到的初始密码


alter user root@localhost identified by 'niuhao';


flush privileges;
退出重新登录，完成
 
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
4 rows in set (0.11 sec)


查看初始密码
cat /var/log/mysqld.log


最后一行：root@localhost: 这里就是初始密码，一定复制下来


5BiJYi2yGMpD
远程用户建立


mysql>grant all privileges on *.* to '新用户名'@'%' identified by '新密码';


flush privileges;


2启动服务，进入mysql，修改初始密码，运行远程连接
#然后执行如下操作开启mysql服务，以及设置相关权限
cd /var/run/


mkdir mysqld


chmod 777 mysqld


cd mysqld


vim mysqld.pid


chmod 777 mysqld.pid


chown mysql:mysql mysqld.pid 
：wq
/usr/local/mysql/support-files/mysql.server start


/usr/local/mysql/bin/mysql -uroot -p 你在上面看到的初始密码








开机自动启动
cd /usr/local/mysql/support-files


cp mysql.server /etc/init.d/mysqld


y


chkconfig --add mysqld


添加系统路径


vim /etc/profile


export PATH=/usr/local/mysql/bin:$PATH
生效：
source /etc/profile
之后就可以 用 mysql -uroot –p  去登录