1. 查看卸載自帶的mysql
# rpm -qa|grep MySQL
MySQL-X.X.X
#rpm -e MySQL-X.X.X
# rpm -qa|grep mariadb #有些版本還得查看卸載這個玩意，貌似mysql開源的一個數據庫
2. 下載安裝包
https://dev.mysql.com/downloads/mysql/5.5.html#downloads(官方下載地址)
位置1：選擇對應的版本
位置2：更多版本的鏈接
備注：下載之后，確定有script目錄和bin目錄。
3.安裝包上傳到linux機器上
4. 解壓到安裝目錄
# tar -zxvf mysql-5.5.62-linux-glibc2.12-x86_64.tar.gz -C /opt/module/
# mv mysql-5.5.62-linux-glibc2.12-x86_64 mysql-5.5.62 #重命名一下
5. 修改mysql的配置文件
# vim /etc/my.cnf
[mysql]
# 設置mysql客戶端默認字符集
default-character-set=utf8
socket=/var/lib/mysql/mysql.sock
[mysqld]
skip-name-resolve
#設置3306端口
port = 3306
socket=/var/lib/mysql/mysql.sock
# 設置mysql的安裝目錄,（注意，目錄寫自己的）
basedir=/opt/module/mysql-5.5.62
# 設置mysql數據庫的數據的存放目錄, （注意，目錄寫自己的）
datadir=/opt/module/mysql-5.5.62/data
# 允許最大連接數
max_connections=200
# 服務端使用的字符集默認為8比特編碼的latin1字符集
character-set-server=utf8
# 創建新表時將使用的默認存儲引擎
default-storage-engine=INNODB
lower_case_table_name=1
max_allowed_packet=16M
6. 添加mysql用戶和用戶組
# cd /opt/module/mysql-5.5.62/ #到mysql安裝目錄
# groupadd mysql
# useradd -g mysql mysql
# chown -R mysql:mysql ./
7. 安裝mysql
[root@slave1 mysql-5.5.62]# ./scripts/mysql_install_db --user=mysql --basedir=/opt/module/mysql-5.5.62/ --datadir=/opt/module/mysql-5.5.62/data/
Installing MySQL system tables...
191215 21:20:18 [Warning] Using unique option prefix lower_case_table_name instead of lower_case_table_names is deprecated and will be removed in a future release. Please use the full name instead.
191215 21:20:18 [Note] Ignoring --secure-file-priv value as server is running with --bootstrap.
191215 21:20:18 [Note] /opt/module/mysql-5.5.62//bin/mysqld (mysqld 5.5.62) starting as process 101287 ...
OK
Filling help tables...
191215 21:20:18 [Warning] Using unique option prefix lower_case_table_name instead of lower_case_table_names is deprecated and will be removed in a future release. Please use the full name instead.
191215 21:20:18 [Note] Ignoring --secure-file-priv value as server is running with --bootstrap.
191215 21:20:18 [Note] /opt/module/mysql-5.5.62//bin/mysqld (mysqld 5.5.62) starting as process 101294 ...
OK
To start mysqld at boot time you have to copy
support-files/mysql.server to the right place for your system
PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !
To do so, start the server, then issue the following commands:
/opt/module/mysql-5.5.62//bin/mysqladmin -u root password 'new-password'
/opt/module/mysql-5.5.62//bin/mysqladmin -u root -h 192.168.222.101 password 'new-password'
Alternatively you can run:
/opt/module/mysql-5.5.62//bin/mysql_secure_installation
which will also give you the option of removing the test
databases and anonymous user created by default. This is
strongly recommended for production servers.
See the manual for more instructions.
You can start the MySQL daemon with:
cd /opt/module/mysql-5.5.62/ ; /opt/module/mysql-5.5.62//bin/mysqld_safe &
You can test the MySQL daemon with mysql-test-run.pl
cd /opt/module/mysql-5.5.62//mysql-test ; perl mysql-test-run.pl
Please report any problems at http://bugs.mysql.com/
8. 配置mysql（能通過service start mysql這種命令來啟動停止mysql）
# chown -R mysql:mysql data
# chown 777 /etc.my.cnf
# cp ./support-files/mysql.server /etc/rc.d/init.d/mysqld
# chmod +x /etc/rc.d/init.d/mysqld
# chkconfig --add mysqld
# chkconfig --list mysqld
# mkdir /var/lib/mysql
# chmod 777 /var/lib/mysql
9. 配置PATH
# vim /etc/profile
export PATH=$PATH:/opt/module/mysql-5.5.62/bin
# source /etc/profile
10. 啟動mysql
[root@slave1 mysql-5.5.62]# service mysqld start
Starting MySQL.Logging to '/opt/module/mysql-5.5.62/data/slave1.err'.
. SUCCESS!
11. 登錄mysql
[root@slave1 mysql-5.5.62]# mysql -uroot -p
Enter password: #直接回車就行，第一次登錄沒有密碼
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.5.62 MySQL Community Server (GPL)
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> set passport=passport("000000");
ERROR 1193 (HY000): Unknown system variable 'passport'
mysql> set password=password("000000"); #更改一下密碼，以后用 000000 登錄mysql
Query OK, 0 rows affected (0.02 sec)
mysql> exit
Bye