搭建Linux-java web運行環境之二：安裝mysql(CentOS6.5)

環境
OS:CentOS-6.5
JDK:jdk-7u80-linux-x64.tar.gz
Tomcat:apache-tomcat-7.0.90.tar.gz
mysql:mysql-5.7.23-linux-glibc2.12-x86_64.tar.gz

 

1、卸載原先安裝的mysql
一、查找已安裝mysql版本

[root@node102 /]# rpm -qa | grep mysql
mysql-libs-5.1.71-1.el6.x86_64

 

二、刪除mysql

[root@node102 /]# rpm -e --nodeps mysql-libs-5.1.71-1.el6.x86_64

刪除以後使用rpm -qa | grep mysql 驗證是否刪除成功

三、刪除殘留mysql文件

[root@node102 /]# rm -rf /var/lib/mysql*
[root@node102 /]# rm -rf /usr/share/mysql*
[root@node102 /]# rm -rf /etc/my.cnf
[root@node102 /]# rm -rf /etc/my.cnf~
[root@node102 /]# rm -rf /var/lib/mysql

2、下載、上傳、解壓

一、下載解壓版mysql 安裝版會是文件分散並且一旦安裝失敗 很差卸載

三、解壓 建立軟鏈接

[root@node102 src]# tar -zxvf mysql-5.7.26-linux-glibc2.12-x86_64.tar.gz -C /usr/local/
[root@node102 src]# cd /usr/local/ && ln -s mysql-5.7.26-linux-glibc2.12-x86_64 mysql

四、建立mysql-files目錄，其做用是爲secure_file_priv系統變量的值的導入和導出到限定目錄提供方便

[root@node102 local]# cd mysql && mkdir mysql-files

 

五、安裝依賴庫libaio，若是更高版本是支持非均勻內存訪問（NUMA）的，它如今依賴於libnuma 庫,Redhat/Fedora/CentOS系統

[root@node102 local]# yum install libaio -y

 

六、建立MYSQL data數據庫文件目錄

[root@node102 local]# mkdir /usr/local/mysql/data

 

七、建立mysql的用戶組和用戶，並對mysql目錄設置用戶組和用戶

[root@node102 local]# groupadd mysql
[root@node102 local]# useradd mysql -g mysql
[root@node102 local]# cd mysql && pwd
/usr/local/mysql
[root@node102 mysql]# chown -R mysql . 
[root@node102 mysql]# chgrp -R mysql .

 

八、初始化mysql (這一步依賴mysql用戶)

[root@node102 bin]# /usr/local/mysql/bin/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data
2019-07-02 09:09:33 [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize
2019-07-02 09:09:39 [WARNING] The bootstrap log isn't empty:
2019-07-02 09:09:39 [WARNING] 2019-07-02T01:09:33.830492Z 0 [Warning] --bootstrap is deprecated. Please consider using --initialize instead
2019-07-02T01:09:33.840636Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000)
2019-07-02T01:09:33.840670Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000)

mysql經過mysql_install_db初始化數據目錄時使用--user選項的做用是什麼?

九、建立sock文件目錄

[root@node102 local]# mkdir -p /var/lib/mysql && chown mysql:mysql /var/lib/mysql
[root@node102 local]# ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock

十、配置/etc/my.cnf(mysql的主配置文件)

[mysqld]
datadir=/usr/local/mysql/data
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

my.cnf配置文件詳解

十一、啓動mysql
(1)命令啓動

[root@node102 run]# /usr/local/mysql/support-files/mysql.server start
Starting MySQL. SUCCESS!

(2) 系統服務啓動

#拷貝啓動服務腳本到系統服務目錄下

[root@node102 ~]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql

#將mysql服務設置爲開機啓動

[root@node102 ~]# chkconfig mysql on
[root@node102 ~]# chkconfig --list | grep mysql
mysql 0:off    1:off    2:on    3:on    4:on    5:on    6:off

#啓動mysql

[root@node102 ~]# service mysql start
Starting MySQL. SUCCESS!

 

十二、mysql bin目錄加入環境變量並從新加載

[root@PCS101 local]# vim /etc/profile

export PATH=$PATH:/usr/local/mysql/bin

[root@PCS101 local]# source /etc/profile

 

1三、獲取mysql初始化密碼，登陸mysql，修改root用戶密碼

[root@node102 run]# cat /root/.mysql_secret
# Password set for user 'root@localhost' at 2019-07-02 09:09:33 
og4*e1rek6a)
[root@localhost ~]# /usr/local/mysql/bin/mysql -u root -p
Enter password: 
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
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> set password=password('123456');
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql>FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.01 sec)

mysql> quit
Bye

 

1四、容許root用戶遠程訪問：

mysql> grant all privileges on *.* to 'root'@'%' identified by '123456' with grant option;
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)

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> select Host,User from user;
+-----------+---------------+
| Host      | User          |
+-----------+---------------+
| %         | root          |
| localhost | mysql.session |
| localhost | mysql.sys     |
| localhost | root          |
+-----------+---------------+
4 rows in set (0.00 sec)

mysql> quit
Bye

 

3、使用root帳號建立應用系統訪問用戶和數據庫

一、使用mysql -u root -p登錄
[root@PCS101 local]# mysql -u root -p
Enter password:

二、建立test用戶，容許該用戶本地訪問
mysql> create user 'test'@'localhost' identified by '123456';

三、建立test用戶，容許該用戶遠程訪問
mysql> create user 'test'@'%' identified by '123456';

 

四、刷新受權:

mysql> flush privileges;

五、建立數據庫testdb
mysql> create database testdb DEFAULT CHARSET utf8 COLLATE utf8_general_ci;

六、授予用戶test經過遠程IP對於該數據庫的所有權限
mysql> grant all privileges on `testdb`.*  to 'test'@'%' identified by '123456';

若是不賦權 使用Navicat遠程鏈接會報錯 「1045 access denied for user 'test'@'localhost' ....」

 七、授予用戶在本地服務器對該數據庫的所有權限

mysql> grant all privileges on `testdb`.* to 'test'@'localhost' identified by '123456';

八、刷新受權:

mysql> flush privileges;

九、退出 root 從新登陸
mysql> exit

 

十、配置Navicat遠程登陸mysql

注意：linux下mysql默認是要區分表名大小寫的

 

參考：

 

centos6.5離線安裝mysql5.7

 

centos6.5 yum安裝mysql