authelia - nginx 鉴权的最佳搭档

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server {
    listen 80;
    server_name auth.xxx.xxx;
    server_tokens off;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl http2;
    server_name auth.xxx.xxx;
    add_header Access-Control-Allow-Origin $http_origin;
    add_header Access-Control-Allow-Methods '*';
    add_header Access-Control-Allow-Credentials true;
    charset uft-8;
    location / {
        proxy_pass http://localhost:9091;
        proxy_connect_timeout 60s;
        proxy_read_timeout 60s;
        proxy_send_timeout 60s;
        proxy_redirect off;
        proxy_http_version 1.1;
        proxy_set_header Host $http_host;
        #proxy_set_header Upgrade $http_upgrade;
        #proxy_set_header Connection "upgrade";
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
    ssl_certificate_key /xxx/xxx.xxx.key;
    ssl_certificate /xxx/xxx.cer;
    ssl_session_timeout 5m;
    ssl_protocols TLSv1.1 TLSv1.2 TLSv1.3;
    ssl_ciphers EECDH+CHACHA20:EECDH+CHACHA20-draft:EECDH+AES128:RSA+AES128:EECDH+AES256:RSA+AES256::!MD5;
    ssl_prefer_server_ciphers on;
}

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## Send a subrequest to Authelia to verify if the user is authenticated and has permission to access the resource.
auth_request /internal/authelia/authz;

## Save the upstream metadata response headers from Authelia to variables.
auth_request_set $user $upstream_http_remote_user;
auth_request_set $groups $upstream_http_remote_groups;
auth_request_set $name $upstream_http_remote_name;
auth_request_set $email $upstream_http_remote_email;

## Inject the metadata response headers from the variables into the request made to the backend.
proxy_set_header Remote-User $user;
proxy_set_header Remote-Groups $groups;
proxy_set_header Remote-Email $email;
proxy_set_header Remote-Name $name;

## Configure the redirection when the authz failure occurs. Lines starting with 'Modern Method' and 'Legacy Method'
## should be commented / uncommented as pairs. The modern method uses the session cookies configuration's authelia_url
## value to determine the redirection URL here. It's much simpler and compatible with the multi-cookie domain easily.

## Modern Method: Set the $redirection_url to the Location header of the response to the Authz endpoint.
auth_request_set $redirection_url $upstream_http_location;

## Modern Method: When there is a 401 response code from the authz endpoint redirect to the $redirection_url.
error_page 401 =302 $redirection_url;

## Legacy Method: Set $target_url to the original requested URL.
## This requires http_set_misc module, replace 'set_escape_uri' with 'set' if you don't have this module.
# set_escape_uri $target_url $scheme://$http_host$request_uri;

## Legacy Method: When there is a 401 response code from the authz endpoint redirect to the portal with the 'rd'
## URL parameter set to $target_url. This requires users update 'auth.example.com/' with their external authelia URL.
# error_page 401 =302 https://auth.example.com/?rd=$target_url;

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set $upstream_authelia http://localhost:9091/api/authz/auth-request;

## Virtual endpoint created by nginx to forward auth requests.
location /internal/authelia/authz {
    ## Essential Proxy Configuration
    internal;
    proxy_pass $upstream_authelia;

    ## Headers
    ## The headers starting with X-* are required.
    proxy_set_header X-Original-Method $request_method;
    proxy_set_header X-Original-URL $scheme://$http_host$request_uri;
    proxy_set_header X-Forwarded-For $remote_addr;
    proxy_set_header Content-Length "";
    proxy_set_header Connection "";

    ## Basic Proxy Configuration
    proxy_pass_request_body off;
    proxy_next_upstream error timeout invalid_header http_500 http_502 http_503; # Timeout if the real server is dead
    proxy_redirect http:// $scheme://;
    proxy_http_version 1.1;
    proxy_cache_bypass $cookie_session;
    proxy_no_cache $cookie_session;
    #proxy_buffers 4 32k;
    client_body_buffer_size 128k;

    ## Advanced Proxy Configuration
    send_timeout 5m;
    proxy_read_timeout 240;
    proxy_send_timeout 240;
    proxy_connect_timeout 240;
}