Linux下安装Mysql数据库

1. 关闭linux的防火墙，执行命令

chkconfig iptables off

2. 从mysql官网上下载自己适合的mysql版本
3. 传到服务器上/use/local/java目录下解压

tar -zxvf mysql-5.6.45-linux-glibc2.12-x86_64.tar.gz

4. 将解压后的文件重命名为mysql

mv  mysql-5.6.45-linux-glibc2.12-x86_64 mysql

5. 进入Mysql目录，添加MySQL配置，创建Mysql用户组及用户

cp support-files/my-default.cnf /etc/my.cnf

#创建mysql用户组及用户
groupadd mysql
useradd -r -g mysql mysql

6. 编辑/etc/my.cnf文件

# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M

# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin

# These are commonly set, remove the # and set as required
basedir = /usr/local/java/mysql5.6
datadir = /usr/local/java/mysql5.6/data
port = 3306
# server_id = .....
socket = /usr/local/java/mysql5.6/mysql.sock
character-set-server = utf8 
log-error=/usr/local/java/mysql5.6/data/error.log 
pid-file=/usr/local/java/mysql5.6/data/mysqld.pid


# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

7. 在mysql当前目录下设定目录的访问权限（注意后面的小点，表示当前目录）

chown -R mysql .
chgrp -R mysql .
scripts/mysql_install_db --user=mysql
chown -R root .
chown -R mysql data

8. 初始化数据（在mysql/bin或者mysql/scripts下有个 mysql_install_db 可执行文件初始化数据库），进入mysql/bin或者mysql/scripts目录下，执行下面命令

./mysql_install_db --verbose --user=root --defaults-file=/etc/my.cnf --datadir=/usr/local/java/mysql5.6/data --basedir=/usr/local/java/mysql5.6 --pid-file=/usr/local/java/mysql5.6/data/mysql.pid --tmpdir=/tmp

9. 启动mysql，进入/usr/local/mysql/bin目录，执行下面命令

./mysqld_safe --defaults-file=/etc/my.cnf --socket=/usr/local/java/mysql5.6/mysql.sock --user=root &

10. 设置开机启动，新开启shell中断后，进入mysql目录，执行下面命令

cp /usr/local/java/mysql5.6/support-files/mysql.server /etc/init.d/mysqld
cp /usr/local/java/mysql5.6/support-files/mysql.server /etc/rc.d/init.d/mysqld
chmod 700 /etc/init.d/mysql
chkconfig --add mysqld
chkconfig --level 2345 mysqld on
chown mysql:mysql -R /usr/local/java/mysql5.6/

重启 linux 后查看 mysql 状态或者看到3306端口号

reboot
 
service mysqld status  
#查看服务状态显示
MySQL running (1541)                                       [  OK  ]

netstat -na | grep 3306 
#查看端口号显示
tcp        0      0 0.0.0.0:3306                0.0.0.0:*                   LISTEN