Nextcloud login loop on Nginx behind Nginx reverse proxy

horizn · 12-26-2018, 05:50 AM

Hi,
I have Nginx configured as a reverse proxy for another Nginx running in local network serving Nextcloud. It is a fres installation of Ubuntu 18.04.1 LTS. The problem I have is login loop when I am trying to login to my Nextcloud instance. The problem occurs only when I am calling it from the internet via reverse proxy or if I am trying to login using domain but calling it directly in the local network. It works as expected only when I am logging into using Links text browser running on localhost(nextcloud). Both error logs says nothing.

My reverse proxy Nginx config:

Code:

server {
        listen 80;
        server_name domain www.domain;
        return 301 https://$server_name$request_uri;
        }

server {
        listen *:443 ssl;
        server_name domain www.domain;

        ssl_certificate /etc/letsencrypt/live/domain/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/domain/privkey.pem;
        ssl_trusted_certificate /etc/letsencrypt/live/domain/chain.pem;

        ssl_ciphers 'ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256';
        ssl_protocols TLSv1.2;

        ssl_session_timeout 1d;
        ssl_session_cache shared:SSL:50m;
        ssl_session_tickets off;
        ssl_prefer_server_ciphers on;
        add_header Strict-Transport-Security max-age=15768000;
        ssl_stapling on;
        ssl_stapling_verify on;
        resolver 8.8.8.8;

        proxy_redirect off;
        client_max_body_size 5g;
        proxy_read_timeout 3000s;
        proxy_send_timeout 3000s;

        location / {
                proxy_set_header Host $host;
                proxy_set_header X-Real-IP $remote_addr;
                proxy_pass https://192.168.101.2;
                proxy_ssl_verify off;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header X-Forwarded-Proto $scheme;
        }
}

My Nginx configuration running on Nextcloud host:

Code:

upstream php-handler {
        server unix:/run/php/php7.2-fpm.sock;
}

server {
        listen 80;
        listen [::]:80;
        server_name domain;
        return 301 https://$server_name$request_uri;
}

server {
        listen 443 ssl http2;
        listen [::]:443 ssl http2;
        server_name domain;

        ssl_certificate /etc/letsencrypt/live/domain/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/domain/privkey.pem;
        ssl_trusted_certificate /etc/letsencrypt/live/domain/chain.pem;
        resolver 8.8.8.8;
        ssl_session_timeout 1d;
        ssl_session_cache shared:SSL:50m;
        ssl_session_tickets off;
        ssl_protocols TLSv1.2;
        ssl_ciphers 'ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256';
        ssl_prefer_server_ciphers on;
        add_header Strict-Transport-Security max-age=15768000;
        ssl_stapling on;
        ssl_stapling_verify on;
        add_header X-Content-Type-Options nosniff;
        add_header X-XSS-Protection "1; mode=block";
        add_header X-Robots-Tag none;
        add_header X-Download-Options noopen;
        add_header X-Permitted-Cross-Domain-Policies none;

        access_log /var/log/nginx/nextcloud-access.log combined;
        error_log /var/log/nginx/nextcloud-error.log error;

        root /var/www/html/nextcloud/;

        location = /robots.txt {
                allow all;
                log_not_found off;
                access_log off;
                }

        location = /.well-known/carddav {
                return 301 $scheme://$host/remote.php/dav;
                }
        location = /.well-known/caldav {
                return 301 $scheme://$host/remote.php/dav;
                }

        # set max upload size
        client_max_body_size 1G;
        fastcgi_buffers 64 4K;

        # Enable gzip but do not remove ETag headers
        gzip on;
        gzip_vary on;
        gzip_comp_level 4;
        gzip_min_length 256;
        gzip_proxied expired no-cache no-store private no_last_modified no_etag auth;
        gzip_types application/atom+xml application/javascript application/json application/ld+json application/manifest+json application/rss+xml application/vnd.geo+json application/vnd.ms-fontobject application/x-font-ttf application/x-web-app-manifest+json application/xhtml+xml application/xml font/opentype image/bmp image/svg+xml image/x-icon text/cache-manifest text/css text/plain text/vcard text/vnd.rim.location.xloc text/vtt text/x-component text/x-cross-domain-policy;

        location / {
                rewrite ^ /index.php$uri;
                }

        location ~ /.well-known/acme-challenge {
                allow all;
                }

        location ~ ^/(?:build|tests|config|lib|3rdparty|templates|data)/ {
                deny all;
                }

        location ~ ^/(?:\.|autotest|occ|issue|indie|db_|console) {
                deny all;
        }

#       location ~ ^/(?:index|remote|public|cron|core/ajax/update|status|ocs/v[12]|updater/.+|ocs-provider/.+)\.php(?:$|/) {
#       location ~ ^/(?:index|remote|public|cron|core/ajax/update|status|ocs/v[12]|updater/.+|ocs-provider/.+|core/templates/40[34])\.php(?:$|/) {
        location ~ ^/(?:index|remote|public|cron|core/ajax/update|status|ocs/v[12]|updater/.+|ocs-provider/.+).php(?:$|/) {
                fastcgi_split_path_info ^(.+\.php)(/.*)$;
                include fastcgi_params;
                fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
                fastcgi_param PATH_INFO $fastcgi_path_info;
                fastcgi_param HTTPS on;
                fastcgi_param modHeadersAvailable true;
                fastcgi_param front_controller_active true;
#               fastcgi_pass unix:/run/php/php7.2-fpm.sock;
                fastcgi_pass php-handler;
                fastcgi_intercept_errors on;
                fastcgi_request_buffering off;
                }

        location ~ ^/(?:updater|ocs-provider)(?:$|/) {
                try_files $uri/ =404;
                index index.php;
                }

        # Adding the cache control header for js and css files
        # Make sure it is BELOW the PHP block
        location ~ \.(?:css|js|woff|svg|gif)$ {
                try_files $uri /index.php$uri$is_args$args;
                add_header Cache-Control "public, max-age=15778463";
                #add_header Strict-Transport-Security max-age=15768000;
                add_header X-Content-Type-Options nosniff;
                add_header X-XSS-Protection "1; mode=block";
                add_header X-Robots-Tag none;
                add_header X-Download-Options noopen;
                add_header X-Permitted-Cross-Domain-Policies none;
                # Optional: Don't log access to assets
                access_log off;
                }

        location ~ \.(?:png|html|ttf|ico|jpg|jpeg)$ {
                try_files $uri /index.php$uri$is_args$args;
                # Optional: Don't log access to other assets
                access_log off;
                }

}

Any idea what is wrong with the configuration?