OpenWRT

OpenWRT is a open source Linux distribution.

Install

NanoPi r2s

完成后将本机与 WAN/LAN 用网线连接 , 网络设置为 192.168.1.1 ,然后使用 Telnet 登录 telnet 192.168.1.1

BusyBox v1.17.3 (2011-02-22 23:42:42 CET) built-in shell (ash)
Enter 'help' for a list of built-in commands.
  _______                     ________        __
 |       |.-----.-----.-----.|  |  |  |.----.|  |_
 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 |_______||   __|_____|__|__||________||__|  |____|
          |__| W I R E L E S S   F R E E D O M
 ATTITUDE ADJUSTMENT (bleeding edge, r26290) ----------
  * 1/4 oz Vodka      Pour all ingredents into mixing
  * 1/4 oz Gin        tin with ice, strain into glass.
  * 1/4 oz Amaretto
  * 1/4 oz Triple sec
  * 1/4 oz Peach schnapps
  * 1/4 oz Sour mix
  * 1 splash Cranberry juice
 -----------------------------------------------------
root@openwrt:~$

在命令行中输入 passwd 为 root 用户设置密码:

root@openwrt:~$ passwd
Changing password for root
New password:
Retype password:
Password for root changed by root
root@openwrt:~$

完成后 , 会自动启用 SSH 服务 , 使用 ssh [email protected] 登陆

重新启动

reboot && exit

cd /tmp
wget http://downloads.openwrt.org/snapshots/trunk/PLATFORM/xxx-sysupgrade.bin
sysupgrade -v /tmp/openwrt-ar71xx-generic-wzr-hp-ag300h-squashfs-sysupgrade.bin

使用 ssh [email protected] 登陆

dropbearkey -t ed25519 -f ~/.ssh/id_dropbear

配置

修改网络参数

vi /etc/config/network

config interface 'lan'
option ifname 'eth1'
option type 'bridge'
option proto 'static'
- option ipaddr '192.168.1.1'
+ option ipaddr '192.168.2.1'
option netmask '255.255.255.0'
option ip6assign '60'

vi /etc/config/wireless

config wifi-device  radio0
    option type     mac80211
    option channel  11
    option hwmode   11ng
    option path 'platform/ar933x_wmac'
    option htmode   HT20
    list ht_capab   SHORT-GI-20
    list ht_capab   SHORT-GI-40
    list ht_capab   RX-STBC1
    list ht_capab   DSSS_CCK-40
-   # REMOVE THIS LINE TO ENABLE WIFI:
-   option disabled 1

config wifi-iface
    option device 'radio0'
    option network 'lan'
    option mode 'ap'
+   option ssid '[email protected]'   # SSID 名称
+   option encryption 'psk-mixed'  # 加密方法
+   option key '[email protected]'    # 密码

Boot from usb

opkg update
opkg install kmod-usb-core kmod-usb-uhci kmod-usb-storage  kmod-usb2  kmod-fs-ext3

mount /dev/sda1 /mnt

tar -C /overlay -cvf - . | tar -C /mnt -xf -

/etc/config/fstab

config 'global'
    option  anon_swap       '0'
    option  anon_mount      '0'
    option  auto_swap       '1'
    option  auto_mount      '1'
    option  delay_root      '5'
    option  check_fs        '0'

+ config 'mount'
+     option  target  '/mnt'
+     option  uuid    'ced46a51-951a-4d22-be2a-b7cebbd66d44'
+     option  enabled '1'
+     option fstype   ext4
+     option options  rw,sync
+     option enabled_fsck 1
+     option is_rootfs 1

Expanding the filesystem

~$ opkg update
~$ opkg install fdisk resize2fs

root@bj:~# fdisk /dev/mmcblk0

Welcome to fdisk (util-linux 2.39).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

This disk is currently in use - repartitioning is probably a bad idea.
It's recommended to umount all file systems, and swapoff all swap
partitions on this disk.


Command (m for help): p

Press p to print out the partition table, 记下分区的起始扇区号
Press d to delete the main partition
Press n to re-create partition, 起始扇区填写前面打印的起始扇区号，会提示检测到 ext4 签名，询问是否移除，选择「No」。
Press w to write the partition table
Press q to quit

Disk /dev/mmcblk0: 14.84 GiB, 15931539456 bytes, 31116288 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x5452574f

Device         Boot  Start    End Sectors  Size Id Type
/dev/mmcblk0p1 *     65536  98303   32768   16M 83 Linux
/dev/mmcblk0p2      131072 344063  212992  104M 83 Linux

Command (m for help): d
Partition number (1,2, default 2): 

Partition 2 has been deleted.

Command (m for help): n
Partition type
   p   primary (1 primary, 0 extended, 3 free)
   e   extended (container for logical partitions)
Select (default p): 

Using default response p.
Partition number (2-4, default 2): 
First sector (2048-31116287, default 2048): 131072
Last sector, +/-sectors or +/-size{K,M,G,T,P} (131072-31116287, default 31116287): 

Created a new partition 2 of type 'Linux' and of size 14.8 GiB.
Partition #2 contains a squashfs signature.

Do you want to remove the signature? [Y]es/[N]o: n

Command (m for help): p

Disk /dev/mmcblk0: 14.84 GiB, 15931539456 bytes, 31116288 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x5452574f

Device         Boot  Start      End  Sectors  Size Id Type
/dev/mmcblk0p1 *     65536    98303    32768   16M 83 Linux
/dev/mmcblk0p2      131072 31116287 30985216 14.8G 83 Linux

这样操作下来原有的分区结束位置就被修改为最大值了，保留分区签名数据就不会丢失了，

mount -o remount,ro /

做 fsck 检查

e2fsck -f /dev/mmcblk0p2

现在我们 reboot 重启

修复 ext4 数据。

resize2fs /dev/mmcblk0p2

然后我们看下系统的磁盘容量

root at nanopi-r2s in ~
$ df -h
Filesystem                Size      Used Available Use% Mounted on
/dev/root                14.6G     76.3M     14.5G   1% /
tmpfs                   494.1M    100.0K    494.0M   0% /tmp
tmpfs                   512.0K         0    512.0K   0% /dev

至此，系统扩容工作已经完成了。

for more information, please refer to https://openwrt.org/docs/guide-user/installation/installation_methods/sd_card

参考：Linux - Resize Partition

Firewall

Firewall - Traffic Rules

Name: Allow HTTP
Protocol: TCP / UDP
Source zone: wan
Source address: – add IP –
Source port: any
Destination zone: Device (input)
Destination address: – add IP –
Destination port: 8888