add: raspberry_install_mysql.md && update raspberry_pi_init

source/_posts/raspberry_install_mysql.md

@@ -0,0 +1,100 @@
+title: 树莓派安装MySQL(记)
+date: 2016-06-04 00:12:53
+tags: 
+- 树莓派
+- Raspberry Pi
+- MySQL
+
+thumbnail: http://7xpox6.com1.z0.glb.clouddn.com/image/lovely_fox.jpg?imageView2/1/w/200
+banner: http://7xpox6.com1.z0.glb.clouddn.com/image/lovely_fox.jpg?imageView2/1/w/1024/h/460 
+
+---
+
+
+## 安装
+
+先将系统更新到最新状态
+
+```
+sudo apt-get update && sudo apt-get upgrade
+```
+
+<!-- more -->
+
+然后安装
+
+```
+sudo apt-get install mysql-server
+```
+
+接着会提示你为`root`用户设置密码，并且确认密码。输入完成后，稍等mysql就安装完成。可以测试一下。
+
+```
+mysql -u root -p
+```
+
+然后输入刚刚设置的密码。
+
+## 开启远程登录
+
+### 配置权限
+
+```
+sudo nano /etc/mysql/my.cnf
+```
+
+找到下一行，并且将`bind-address`的值改成`0.0.0.0`
+
+```
+bind-address = 0.0.0.0
+```
+
+为root用户开启远程登录权限，并且限制在局域网内
+
+```
+GRANT ALL PRIVILEGES ON *.* TO 'root'@'192.168.1.%' IDENTIFIED BY 'password' WITH GRANT OPTION;
+```
+
+重启MySQL服务
+
+```
+sudo /etc/init.d/mysql restart
+```
+
+### 打开`3306`端口
+
+最后用`iptables`打开`3306`端口
+
+```
+iptables -A INPUT -i eth0 -p tcp -m tcp --dport 3306 -j ACCEPT
+```
+
+或者限定固定的`ip`才能访问
+
+```
+sudo iptables -A INPUT -i eth0 -s 192.168.1.0/24 -p tcp --destination-port 3306 -j ACCEPT
+```
+
+### 测试访问
+
+```
+echo X | telnet -e X 192.168.1.110 3306
+```
+
+或者
+
+```
+nc -z -w1 192.168.1.110 3306
+```
+
+成功的话，会看到类似的输出
+
+```
+Connection to 192.168.199.121 port 3306 [tcp/mysql] succeeded!
+```
+
+## 参考资料
+- [Tutorial – Install MySQL server on Raspberry Pi](https://www.stewright.me/2014/06/tutorial-install-mysql-server-on-raspberry-pi/)
+- [Raspberry Pi MYSQL & PHPMyAdmin Tutorial](https://pimylifeup.com/raspberry-pi-mysql-phpmyadmin/)
+- [How Do I Enable Remote Access To MySQL Database Server?](http://www.cyberciti.biz/tips/how-do-i-enable-remote-access-to-mysql-database-server.html)
+- [Remote Access to Mysql on PI](https://www.raspberrypi.org/forums/viewtopic.php?f=36&t=20214)

source/_posts/raspberry_pi_init.md

@@ -7,8 +7,8 @@ tags:
 - NAS
 - Raspberry Pi
 
-thumbnail: http://7xpox6.com1.z0.glb.clouddn.com/image/snow_bridge.jpg?imageView2/1/w/200
-banner: http://7xpox6.com1.z0.glb.clouddn.com/image/snow_bridge.jpg?imageView2/1/w/1024/h/460 
+thumbnail: http://7xpox6.com1.z0.glb.clouddn.com/image/lake_forest.jpg?imageView2/1/w/200
+banner: http://7xpox6.com1.z0.glb.clouddn.com/image/lake_forest.jpg?imageView2/1/w/1024/h/460 
 
 ---