TTRSS on WSL2

• Some Points Noticed.
• WSL2 Start Mothod
• Deploy TTRSS with Proxy 🤯
  • Communication IP
• Lan Device Access
• Windows Docker Comparison
• Backup Your Data
• Finally

Keywords: docker / wsl2 / port forward

Some Points Noticed.

• WSL2 docker start method.
• Deploy container with proxy.
  • Communication IP between WSL2 & Windows.
• Under LAN accessing TTRSS(WSL2) cross the Windows IP.

WSL2 Start Mothod

# Error Way:
$systemctl start docker.service
# System has not been booted with systemd as init system (PID 1). Can't operate.
# Failed to connect to bus: Host is down

# Right Way: (via: https://stackoverflow.com/questions/52197246/wsl-redis-encountered-system-has-not-been-booted-with-systemd-as-init-system-pi
$sudo dockerd
$sudo service docker start
$sudo /etc/init.d/docker start

Deploy TTRSS with Proxy 🤯

部署 TTRSS 的部分可以參考這些博客，他們寫的都比我耐心和詳細，這裏我就不講廢話了.

• Offical Doc: Awesome-TTRSS HenryQW/Awesome-TTRSS
• Nice Blog: Tiny Tiny RSS：最速部署私有 RSS 服務器 - Spencer’s Blog

部署的命令可能稍有不同:

docker-compose up -d --env .env
# docker-compose stop
# docker-compose down
# --env         environment setting using .env file
# -d            detached mode
$cat .env
HTTP_PROXY=172.29.160.1
URL_PATH=192.168.2.2
# HTTP_PROXY    proxy ip(windows' ip in wsl2)
# URL_PATH      lan ip

Communication IP

docker-compose.yml 配置文件需要注意這幾行, HTTP_PROXY 只有寫在配置文件中才會生效，然而命令行傳參也不可行，所以只能用另一個文件 .env 傳值.

    ports:
      - 4040:80
    environment:
!     - SELF_URL_PATH=http://${URL_PATH}:4040 # please change to your own domain
!     - HTTP_PROXY=http://${HTTP_PROXY}:7890

部署的時候因爲用到了兩個不確定的 IP, 而 WSL2 IP 無法固定, 當然後者可以通過路由器的靜態IP分配解決，而針對 WSL2 解決靜態IP的場景有很多解決方案，如:

• windows hosts 映射，每次啓動向 hosts 文件追加一條映射(via: zhihu). 就可以固定一條預設的域名訪問 WSL2. 但是 Lan 問題怎麼解決? 而且這條 hosts 日漸增多還會有安全隱患.
• 文件傳遞，我挑了兩個文件分別存 windows / wsl 的兩個IP, 這樣兩者就都能拿到各自的 IP 了.
  • C:\Users\15517\bin\lan_ip

    • netsh interface ip show address "WLAN" | findstr "IP Address" | Select-String -Pattern '([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*)' | %{ $_.matches.Value }
      

  • C:\Users\15517\bin\wsl_ip

    • cat /etc/resolv.conf |grep "nameserver" |cut -f 2 -d " " # or using
      ip addr show eth0 | grep 'inet ' | cut -f 6 -d ' ' | cut -f 1 -d '/'
      

Lan Device Access

因爲 WSL2 的特殊原因，局域網訪問設備需要主機 (Windows) 將 WSL2 的特定端口暴露出去，映射到 windows 上.

sudo netsh interface portproxy add v4tov4 listenport=4040 listenaddress=* connectport=4040 connectaddress=xxx.xxx.xxx.xxx protocol=tcp
netsh interface portproxy show all

至此所有的坑就踩完了，都是些簡單的命令堆砌，大多是解決使用 WSL2 這個特性所需要付出的代價罷了

Windows Docker Comparison

另外，博主還對比了 windows docker 利用 WSL2 虛擬化託管 TTRSS, 發現系統佔用不如直接用 WSL2 來的輕便，具體體驗是

• windows + wsl2 => mem 3G
• wsl2 => 2G

當然，除了內存佔用更多之外，配置代理更是無從下手，上文的配置文件失效 + GUI 界面配置也失敗了，總是找不準代理的地址，猜測是疊上 WSL2 的 Buff, 無法簡單的通過 127.0.0.1:7890 來解決… 這個問題可能真的無解, via: Stackoverflow, 報錯如下，希望知道的大佬可以指點一二.

docker Failed to connect to 127.0.0.1 port 7890 after 0 ms: Connection refused

也許還要做一次端口轉發，複雜度兩者都快一樣了，所以最後放棄了😁…

Backup Your Data

當然中途換到 windows 做過一次數據遷移。嘗試掛載備份了數據，移植到 windows, 其實最重要的就是一個 .sql 文件，其他都可以丟棄.

$ docker run --rm --volumes-from a5b8c5847c8d -v /home/bgzocg/ttrss/backup:/backup ubuntu tar cvfP /backup/backup.tar /var/lib/postgresql/data/

via: 🎯 備份和遷移數據 - Docker 快速入門 - 易文檔

Finally

使用如下，僅供參考 (腳本因機器環境而異, windows 用戶名 15517 和 wsl2 用戶名 bgzocg, proxy 端口 7890, ttrss 端口 4040).

C:\Users\15517\Documents\PowerShell\Microsoft.PowerShell_profile.ps1

function Output-Lan-Ip-Bin {
    $Lan_Ip = netsh interface ip show address "WLAN" | findstr "IP Address" | Select-String -Pattern '([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*)' | %{ $_.matches.Value }
    #ipconfig | findstr /i "ipv4" | select-object -Skip 1 | select-object -First 1 | Select-String -Pattern '([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*)' | % { $($_.matches.groups[1]).Value}
    # NOTES: get the second line IP. I have three IPs, you could modify
    # select-object -Skip 1 | select-object -First 1
    # to fit your machine. :)

    echo "URL_PATH=$Lan_Ip" > C:\Users\15517\bin\lan_ip
    # output sharing Lan IP path

    echo "Your Server: http://${Lan_Ip}:4040"
    echo "Output PC Lan IP Successfully."
}

function Netsh-Lan {
    $tmp=cat C:\Users\15517\bin\wsl_ip
    # get sharing IP

    sudo netsh interface portproxy add v4tov4 listenport=4040 listenaddress=* connectport=4040 connectaddress=$tmp protocol=tcp
    echo "Port Forward Set Successfully."
    # port forward

    netsh interface portproxy show all
}

function Start-TTRSS { # main
    Output-Lan-Ip-Bin
    wsl /mnt/c/Users/15517/bin/wsl-ip.sh

    wsl sudo service docker start

    #via https://docs.docker.com/compose/compose-file/compose-file-v2/
    wsl docker-compose -f /home/bgzocg/ttrss/docker-compose.yml --env /home/bgzocg/ttrss/.env up -d

    Netsh-Lan
}

C:\Users\15517\bin\wsl-ip.sh

#!/bin/sh
# author: bGZo
# update: 220316
# set env
host_ip=$(cat /etc/resolv.conf |grep "nameserver" |cut -f 2 -d " ")
echo "HTTP_PROXY=$host_ip" > /home/bgzocg/ttrss/.env
cat /mnt/c/Users/15517/bin/lan_ip >> /home/bgzocg/ttrss/.env

# output shring IP
ip addr show eth0 | grep 'inet ' | cut -f 6 -d ' ' | cut -f 1 -d '/' > /mnt/c/Users/15517/bin/wsl_ip

echo "Output WSL2 IP And Set Proxy Successfully."

View source. Powered by Github issue & Vercel.