安裝准備
Mariadb 去除
由於CentOS7自帶的是 Mariadb, 所以先來刪除他吧...
1. 查找版本
# rpm -qa|grep mariadb
執行命令后會出現類似 MariaDB-server-5.5.49-1.el7.centos.x86_64 之類的鬼..記住名字就行了.
2. 刪除
# rpm -e --nodeps 上面查出來的文件名
3. 刪除配置文件
# rm /etc/my.cnf
安裝包獲取
在官方直接找吧 MySQL Community Server 5.5.62
選擇 Linux - Generic 注意
推送壓縮包
推送到虛擬機或者遠程服務器, ftp 或者 rz, 或者直接圖形界面拖動隨你, 總之推上去就行了
開始安裝
解壓
解壓中注意如果出現EOF 報錯之類的需要考慮是否壓縮包文件損壞
嘗試更換壓縮包或者重新推送壓縮包
tar -xvf mysql-5.5.62-linux-glibc2.12-x86_64.tar.gz
復制到 local
mv mysql-5.5.62-linux-glibc2.12-x86_64 /usr/local
修改文件夾
cd /usr/local mv mysql-5.5.62-linux-glibc2.12-x86_64 mysql-5.5.62
修改配置文件
vi /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, 這里的目錄一定要是你解壓后並且改了名的目錄喲.. basedir=/usr/local/mysql-5.5.62 # 設置mysql數據庫的數據的存放目錄, 這里的目錄一定要是你解壓后並且改了名的目錄喲.. datadir=/usr/local/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
切換目錄到mysql中
cd /usr/local/mysql-5.5.62
添加用戶組與用戶
注意 : 這里需要將目錄切換到mysql目錄下 也就是上一步的操作
groupadd mysql
useradd -g mysql mysql
chown -R mysql:mysql ./
安裝mysql
./scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql-5.5.62/ --datadir=/usr/local/mysql-5.5.62/data/
安裝后會有如下的打印
[root@yangtuo mysql-5.5.62]# ./scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql-5.5.62/ --datadir=/usr/local/mysql-5.5.62/data/ Installing MySQL system tables... 190616 17:56:34 [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. 190616 17:56:34 [Note] Ignoring --secure-file-priv value as server is running with --bootstrap. 190616 17:56:34 [Note] /usr/local/mysql-5.5.62//bin/mysqld (mysqld 5.5.62) starting as process 73351 ... OK Filling help tables... 190616 17:56:34 [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. 190616 17:56:34 [Note] Ignoring --secure-file-priv value as server is running with --bootstrap. 190616 17:56:34 [Note] /usr/local/mysql-5.5.62//bin/mysqld (mysqld 5.5.62) starting as process 73359 ... 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: /usr/local/mysql-5.5.62//bin/mysqladmin -u root password 'new-password' /usr/local/mysql-5.5.62//bin/mysqladmin -u root -h 172.20.10.7 192.168.122.1 password 'new-password' Alternatively you can run: /usr/local/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 /usr/local/mysql-5.5.62/ ; /usr/local/mysql-5.5.62//bin/mysqld_safe & You can test the MySQL daemon with mysql-test-run.pl cd /usr/local/mysql-5.5.62//mysql-test ; perl mysql-test-run.pl Please report any problems at http://bugs.mysql.com/ [root@yangtuo mysql-5.5.62]#
以上到此已經安裝成功了 mysql 還需要一些設置才可以正常運行
安裝配置
配置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
開啟服務
service mysqld start
設置PATH
vi ~/.bash_profile
在文件最后面加入以下內容,並使用:wq保存
export PATH=$PATH:/usr/local/mysql-5.5.62/bin
刷新PATH
source ~/.bash_profile
以上操作完成就既可以正常使用 mysql 了, 為了后期的方便使用, 我們還要進行一定的優化設置已經安全性設置等
mysql 基本使用及設置
登錄mysql
這時mysql沒有密碼, 當出現Enter password:時直接回車
mysql -uroot -p
修改root密碼
mysql> use mysql mysql> update user set password=password('需要設置的密碼') where user='root' and host='localhost'; mysql> flush privileges;
配置遠程登錄
mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '剛才設置的root密碼' WITH GRANT OPTION;
到此所有配置全部完畢. 可以使用遠程工具進行登錄了