linux centos7 安裝MySQL5.7
阿新 • • 發佈:2021-06-22
1:下載
https://dev.mysql.com/downloads/mysql/5.7.html#downloads
2:解壓
tar -xvf mysql-5.7.26-linux-glibc2.12-x86_64.tar
3:再移動並重命名一下
mv mysql-5.7.26-linux-glibc2.12-x86_64 /usr/local/mysql
4:建立mysql使用者組和使用者並修改許可權
groupadd mysql
useradd -r -g mysql mysql
5:建立資料目錄
mkdir -p /data/mysql #建立目錄 chown mysql:mysql -R /data/mysql #賦予許可權
6:配置my.cnf
vim /etc/my.cnf
內容
[mysqld] bind-address=0.0.0.0 port=3306 user=mysql basedir=/usr/local/mysql datadir=/data/mysql socket=/tmp/mysql.sock log-error=/data/mysql/mysql.err pid-file=/data/mysql/mysql.pid #character config character_set_server=utf8mb4 symbolic-links=0 explicit_defaults_for_timestamp=true
7:初始化資料庫
進入mysql的bin目錄
cd /usr/local/mysql/bin/
初始化
./mysqld --defaults-file=/etc/my.cnf --basedir=/usr/local/mysql/ --datadir=/data/mysql/ --user=mysql --initialize
檢視密碼
cat /data/mysql/mysql.err
8:啟動mysql,並更改root 密碼
先將mysql.server放置到/etc/init.d/mysql中
cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql
啟動!!!
service mysql start
如果以前安裝過,沒有解除安裝乾淨,會遇到一下問題
[root@VM-0-4-centos bin]# service mysql start Starting MySQL... ERROR! The server quit without updating PID file (/data/mysql/mysql.pid).
檢視日誌,埠在佔用
解決
[root@VM-0-4-centos ~]# netstat -apn | grep 3306 tcp6 0 0 :::3306 :::* LISTEN 12519/mysqld [root@VM-0-4-centos ~]# kill -9 12519 [root@VM-0-4-centos ~]# ^C
重新啟動,就OK
[root@VM-0-4-centos mysql]# service mysql start Starting MySQL. SUCCESS! [root@VM-0-4-centos mysql]#
首先登入mysql,密碼是前面隨機生成的。
[root@VM-0-4-centos mysql]# cd /usr/local/mysql/ [root@VM-0-4-centos mysql]# ./bin/my myisamchk my_print_defaults mysqlcheck mysqld mysqldump mysql_install_db mysqlshow mysql_tzinfo_to_sql myisam_ftdump mysql mysql_client_test_embedded mysqld-debug mysqldumpslow mysql_plugin mysqlslap mysql_upgrade myisamlog mysqladmin mysql_config mysqld_multi mysql_embedded mysqlpump mysql_ssl_rsa_setup mysqlxtest myisampack mysqlbinlog mysql_config_editor mysqld_safe mysqlimport mysql_secure_installation mysqltest_embedded [root@VM-0-4-centos mysql]# ./bin/mysql -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 2 Server version: 5.7.26 Copyright (c) 2000, 2019, 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>
重置密碼
mysql> mysql> SET PASSWORD = PASSWORD('root'); Query OK, 0 rows affected, 1 warning (0.00 sec) mysql> mysql> ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER; Query OK, 0 rows affected (0.00 sec) mysql> FLUSH PRIVILEGES; Query OK, 0 rows affected (0.00 sec) mysql>
允許遠端連線
mysql> use mysql; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> mysql> update user set host = '%' where user = 'root'; Query OK, 1 row affected (0.00 sec) Rows matched: 1 Changed: 1 Warnings: 0 mysql> mysql> FLUSH PRIVILEGES; Query OK, 0 rows affected (0.00 sec) mysql>
如果不希望每次都到bin目錄下使用mysql命令則可以建立軟連線
ln -s /usr/local/mysql/bin/mysql /usr/bin
至此,完成!