为 misskey 实例配置 Tor 服务
2023-05-01 17:13:27 # Guide #misskey #tor #fediverse

参考 Mastodon 的文档

安装 Tor

参照 Tor installation Guide

配置 Tor

编辑 /etc/tor/torrc，取消注释下面两行：

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HiddenServiceDir /var/lib/tor/hidden_service/
HiddenServicePort 80 127.0.0.1:80

然后重启 Tor：sudo service restart tor

在 /var/lib/tor/hidden_service/hostname 文件内可以找到你的 Tor 地址

配置 nginx

在没配置 Tor 之前，你的 nginx 配置文件可能长这样（如果是参照 misskey 官方文档的话）：

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# For WebSocket
map $http_upgrade $connection_upgrade {
    default upgrade;
    ''      close;
}

proxy_cache_path /tmp/nginx_cache levels=1:2 keys_zone=cache1:16m max_size=1g inactive=720m use_temp_path=off;

server {
    listen 80;
    listen [::]:80;
    server_name m.isle.moe;

    access_log /var/log/nginx/m.isle.moe.access.log;

    # For SSL domain validation
    root /var/www/html;
    location /.well-known/acme-challenge/ { allow all; }
    location /.well-known/pki-validation/ { allow all; }
    location / { return 301 https://$server_name$request_uri; }
}

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name m.isle.moe;

    access_log /var/log/nginx/m.isle.moe.access.log;

    ssl_session_timeout 1d;
    ssl_session_cache shared:ssl_session_cache:10m;
    ssl_session_tickets off;  

    # SSL
    ssl_certificate      /etc/nginx/certs/m.isle.moe/cert.pem;
    ssl_certificate_key  /etc/nginx/certs/m.isle.moe/key.pem;

    # SSL protocol settings
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
    ssl_prefer_server_ciphers off;
    ssl_stapling on;
    ssl_stapling_verify on;

    # Change to your upload limit
    client_max_body_size 80m;

    # Proxy to Node
    location / {
        proxy_pass http://127.0.0.1:3000;
        proxy_set_header Host $host;
        proxy_http_version 1.1;
        proxy_redirect off;

        # If it's behind another reverse proxy or CDN, remove the following.
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto https;

        # For WebSocket
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;

        # Cache settings
        proxy_cache cache1;
        proxy_cache_lock on;
        proxy_cache_use_stale updating;
        proxy_force_ranges on;
        add_header X-Cache $upstream_cache_status;
    }
}

现在，创建一个单独的配置文件 /etc/nginx/sites-available/misskey-base.conf，将原配置文件中的 443端口 server 段内除 ssl 相关的配置复制过来：

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access_log /var/log/nginx/m.isle.moe.access.log;

# Change to your upload limit
client_max_body_size 80m;

# Proxy to Node
location / {
    proxy_pass http://127.0.0.1:3000;
    proxy_set_header Host $host;
    proxy_http_version 1.1;
    proxy_redirect off;

    # If it's behind another reverse proxy or CDN, remove the following.
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto https;

    # For WebSocket
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection $connection_upgrade;

    # Cache settings
    proxy_cache cache1;
    proxy_cache_lock on;
    proxy_cache_use_stale updating;
    add_header X-Cache $upstream_cache_status;
}

然后在原配置文件中的 443 端口的 server 段内删除相关内容，并添加 include /etc/nginx/sites-available/misskey-base.conf; 来引用刚刚创建的 misskey-base.conf 文件。因为等会为 Tor 创建配置时同样需要这部分内容，这么做是为了避免重复配置内容

接着，在原来的配置文件中添加 Tor 的 server 段：

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# Tor
server {
    listen 80;
    listen [::]:80;
    server_name isle.6f5tqc7v2fgvwxanzibkj2nhwpva43h2qltoxetprfxqu6h6pdnwelad.onion;
    include /etc/nginx/sites-available/misskey-base.conf;
}

同样 include 刚刚抽出的配置文件，server_name 为自定义的前缀加上 onion 域名

这时候，如果测试配置文件，nginx 将会报出 nginx: [emerg] could not build the server_names_hash, you should increase server_names_hash_bucket_size: 64 错误。这是因为 onion 域名太长了，需要修改 nginx 配置

编辑 /etc/nginx/nginx.conf，取消注释 server_names_hash_bucket_size: 64 并改 64 为 128（是的，64 不够）

重启 nginx 服务来让新配置生效：sudo systemctl restart nginx

这个时候应该可以通过 Tor 访问 misskey 了

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2023-05-01 17:13:27 # Guide #misskey #tor #fediverse
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