使用下麵的命令檢查是否安裝有MySQL Server 有的話，我們就通過 rpm -e 命令 或者 rpm -e --nodeps 命令來卸載掉 在刪除完以後我們可以通過 rpm -qa | grep mysql 命令來查看mysql是否已經卸載成功！！ 官網yum repository 下載安裝包 ...
使用下麵的命令檢查是否安裝有MySQL Server
[root@localhost etc]# rpm -qa | grep mysql // 這個命令就會查看該操作系統上是否已經安裝了mysql資料庫
有的話，我們就通過 rpm -e 命令 或者 rpm -e --nodeps 命令來卸載掉
[root@localhost ~]# rpm -e mysql // 普通刪除模式 [root@localhost ~]# rpm -e --nodeps mysql // 強力刪除模式，如果使用上面命令刪除時，提示有依賴的其它文件，則用該命令可以對其進行強力刪除
在刪除完以後我們可以通過 rpm -qa | grep mysql 命令來查看mysql是否已經卸載成功！！
官網yum repository 下載安裝包
[root@localhost ~]# wget http://dev.mysql.com/get/mysql57-community-release-el6-10.noarch.rpm
--2017-04-24 18:53:49-- http://dev.mysql.com/get/mysql57-community-release-el6-10.noarch.rpm Resolving dev.mysql.com... 137.254.60.11 Connecting to dev.mysql.com|137.254.60.11|:80... connected. HTTP request sent, awaiting response... 301 Moved Permanently Location: https://dev.mysql.com/get/mysql57-community-release-el6-10.noarch.rpm [following] --2017-04-24 18:53:49-- https://dev.mysql.com/get/mysql57-community-release-el6-10.noarch.rpm Connecting to dev.mysql.com|137.254.60.11|:443... connected. ERROR: certificate common name “www.mysql.com” doesn’t match requested host name “dev.mysql.com”. To connect to dev.mysql.com insecurely, use ‘--no-check-certificate’
本地安裝下載下來的rpm包
[root@localhost ~]# yum localinstall mysql57-community-release-el6-10.noarch.rpm
Loaded plugins: fastestmirror, refresh-packagekit, security Setting up Local Package Process Examining mysql57-community-release-el6-10.noarch.rpm: mysql57-community-release-el6-10.noarch Marking mysql57-community-release-el6-10.noarch.rpm to be installed Loading mirror speeds from cached hostfile * base: mirrors.cn99.com * extras: mirrors.cn99.com * updates: mirrors.cn99.com Resolving Dependencies --> Running transaction check ---> Package mysql57-community-release.noarch 0:el6-10 will be installed --> Finished Dependency Resolution Dependencies Resolved =============================================================================================================================================================================================== Package Arch Version Repository Size =============================================================================================================================================================================================== Installing: mysql57-community-release noarch el6-10 /mysql57-community-release-el6-10.noarch 30 k Transaction Summary =============================================================================================================================================================================================== Install 1 Package(s) Total size: 30 k Installed size: 30 k Is this ok [y/N]: y Downloading Packages: Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing : mysql57-community-release-el6-10.noarch 1/1 Verifying : mysql57-community-release-el6-10.noarch 1/1 Installed: mysql57-community-release.noarch 0:el6-10 Complete!
查看可用的安裝包
[root@localhost ~]# yum repolist enabled|grep mysql mysql-connectors-community MySQL Connectors Community 33 mysql-tools-community MySQL Tools Community 47 mysql57-community MySQL 5.7 Community Server 183
安裝前裝gcc所有包，防止報錯[Errno -1] Package does not match intended download
[root@localhost yum.repos.d]# yum install gcc*
安裝mysql
[root@localhost yum.repos.d]# yum install -y mysql-community-server
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
* base: mirrors.cn99.com
* extras: mirrors.cn99.com
* updates: mirrors.cn99.com
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package mysql-community-server.x86_64 0:5.7.18-1.el6 will be installed
--> Processing Dependency: mysql-community-common(x86-64) = 5.7.18-1.el6 for package: mysql-community-server-5.7.18-1.el6.x86_64
--> Processing Dependency: mysql-community-client(x86-64) >= 5.7.9 for package: mysql-community-server-5.7.18-1.el6.x86_64
--> Running transaction check
---> Package mysql-community-client.x86_64 0:5.7.18-1.el6 will be installed
--> Processing Dependency: mysql-community-libs(x86-64) >= 5.7.9 for package: mysql-community-client-5.7.18-1.el6.x86_64
---> Package mysql-community-common.x86_64 0:5.7.18-1.el6 will be installed
--> Running transaction check
---> Package mysql-community-libs.x86_64 0:5.7.18-1.el6 will be obsoleting
---> Package mysql-libs.x86_64 0:5.1.71-1.el6 will be obsoleted
--> Processing Dependency: libmysqlclient.so.16()(64bit) for package: 2:postfix-2.6.6-2.2.el6_1.x86_64
--> Processing Dependency: libmysqlclient.so.16(libmysqlclient_16)(64bit) for package: 2:postfix-2.6.6-2.2.el6_1.x86_64
--> Running transaction check
---> Package mysql-community-libs-compat.x86_64 0:5.7.18-1.el6 will be obsoleting
---> Package postfix.x86_64 2:2.6.6-2.2.el6_1 will be updated
---> Package postfix.x86_64 2:2.6.6-8.el6 will be an update
--> Finished Dependency Resolution
Dependencies Resolved
=============================================================================================================================
Package Arch Version Repository Size
=============================================================================================================================
Installing:
mysql-community-libs x86_64 5.7.18-1.el6 mysql57-community 2.1 M
replacing mysql-libs.x86_64 5.1.71-1.el6
mysql-community-libs-compat x86_64 5.7.18-1.el6 mysql57-community 1.6 M
replacing mysql-libs.x86_64 5.1.71-1.el6
mysql-community-server x86_64 5.7.18-1.el6 mysql57-community 152 M
Installing for dependencies:
mysql-community-client x86_64 5.7.18-1.el6 mysql57-community 23 M
mysql-community-common x86_64 5.7.18-1.el6 mysql57-community 328 k
Updating for dependencies:
postfix x86_64 2:2.6.6-8.el6 base 2.0 M
Transaction Summary
=============================================================================================================================
Install 5 Package(s)
Upgrade 1 Package(s)
Total size: 180 M
Total download size: 152 M
Downloading Packages:
mysql-community-server-5.7.18-1.el6.x86_64.rpm | 152 MB 01:41
warning: rpmts_HdrFromFdno: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
Importing GPG key 0x5072E1F5:
Userid : MySQL Release Engineering <[email protected]>
Package: mysql57-community-release-el6-10.noarch (@/mysql57-community-release-el6-10.noarch)
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : mysql-community-common-5.7.18-1.el6.x86_64 1/8
Installing : mysql-community-libs-5.7.18-1.el6.x86_64 2/8
Installing : mysql-community-libs-compat-5.7.18-1.el6.x86_64 3/8
Installing : mysql-community-client-5.7.18-1.el6.x86_64 4/8
Installing : mysql-community-server-5.7.18-1.el6.x86_64 5/8
Updating : 2:postfix-2.6.6-8.el6.x86_64 6/8
Cleanup : 2:postfix-2.6.6-2.2.el6_1.x86_64 7/8
Erasing : mysql-libs-5.1.71-1.el6.x86_64 8/8
Verifying : 2:postfix-2.6.6-8.el6.x86_64 1/8
Verifying : mysql-community-libs-compat-5.7.18-1.el6.x86_64 2/8
Verifying : mysql-community-server-5.7.18-1.el6.x86_64 3/8
Verifying : mysql-community-libs-5.7.18-1.el6.x86_64 4/8
Verifying : mysql-community-common-5.7.18-1.el6.x86_64 5/8
Verifying : mysql-community-client-5.7.18-1.el6.x86_64 6/8
Verifying : 2:postfix-2.6.6-2.2.el6_1.x86_64 7/8
Verifying : mysql-libs-5.1.71-1.el6.x86_64 8/8
Installed:
mysql-community-libs.x86_64 0:5.7.18-1.el6 mysql-community-libs-compat.x86_64 0:5.7.18-1.el6
mysql-community-server.x86_64 0:5.7.18-1.el6
Dependency Installed:
mysql-community-client.x86_64 0:5.7.18-1.el6 mysql-community-common.x86_64 0:5.7.18-1.el6
Dependency Updated:
postfix.x86_64 2:2.6.6-8.el6
Replaced:
mysql-libs.x86_64 0:5.1.71-1.el6
Complete!
啟動mysql
[root@localhost yum.repos.d]# service mysqld start
Initializing MySQL database: [ OK ] Installing validate password plugin: [ OK ] Starting mysqld: [ OK ]
進入mysql安全模式
[root@localhost yum.repos.d]# killall -TERM mysqld [root@localhost yum.repos.d]# mysqld_safe --skip-grant-tables & [1] 40422 [root@localhost yum.repos.d]# 2017-04-25T07:45:39.222061Z mysqld_safe Logging to '/var/log/mysqld.log'. 2017-04-25T07:45:39.246117Z mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql mysql -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.7.18 MySQL Community Server (GPL) Copyright (c) 2000, 2017, 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> 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 * from users;
ERROR 1146 (42S02): Table 'mysql.users' doesn't exist
mysql> select * from user;
mysql> update user set authentication_string=PASSWORD('mysql') where user='root';
Query OK, 1 row affected, 1 warning (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 1
mysql> quit
Bye
[2]+ Exit 1 mysqld_safe --skip-grant-tables
[root@localhost yum.repos.d]# service mysqld start Starting mysqld: [ OK ] [root@localhost yum.repos.d]# mysql -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 5 Server version: 5.7.18 MySQL Community Server (GPL) Copyright (c) 2000, 2017, 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 -h主機地址 -u用戶名 －p用戶密碼
1、例1：連接到本機上的MYSQL
找到mysql的安裝目錄，一般可以直接鍵入命令mysql -uroot -p，回車後提示你輸密碼，如果剛安裝好MYSQL，超級用戶root是沒有密碼的，故直接回車即可進入到MYSQL中
了，MYSQL的提示符是：mysql>
2、連接到遠程主機上的MYSQL
假設遠程主機的IP為：10.0.0.1，用戶名為root,密碼為123。則鍵入以下命令：
mysql -h10.0.0.1 -uroot -p123
（註：u與root可以不用加空格，其它也一樣）
配置防火牆
防火牆的3306埠預設沒有開啟，若要遠程訪問，需要開啟這個埠
打開/etc/sysconfig/iptables
在“-A INPUT –m state --state NEW –m tcp –p tcp –dport 22 –j ACCEPT”，下添加：
-A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT
然後保存，並關閉該文件，在終端內運行下麵的命令，刷新防火牆配置：
service iptables restart OK，一切配置完畢，你可以訪問你的MySQL了~
註意：增加的開放3306埠的語句一定要在icmp-host-prohibited之前
mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.18 MySQL Community Server (GPL)
Copyright (c) 2000, 2017, 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.
