Wsrtjtyk

I am trying to configure reverse proxy for Jenkins 2.151 with nginx-1.12.2 on Centos 7.5 server. my Jenkins running on port 8080 with prefix /Jenkins. Using the below nginx configuration file when I go to manage configuration always getting It appears that your reverse proxy set up is broken. Tried several different options not able to the fix.

tried these two recommendation already, no luck

https://wiki.jenkins.io/display/JENKINS/Jenkins+behind+an+NGinX+reverse+proxy
NGINX/JENKINS: It appears that your reverse proxy set up is broken

Looking for some help now.

worker_processes 1;

events { worker_connections 1024; }

http {

    log_format compression '$remote_addr - $remote_user [$time_local] '

        '"$request" $status $upstream_addr '

        '"$http_referer" "$http_user_agent" "$gzip_ratio"';

    server {

        listen 80 default_server;

        server_name _;

        return 301 https://$host$request_uri;

    }

    server {

        listen 443 http2 ssl;

        server_name jenkins-dev.test.com;

        access_log /var/log/nginx/access.log compression;

        error_log  /var/log/nginx/error.log ;

        ignore_invalid_headers off;

            location ^~ /jenkins/ {

                proxy_pass http://localhost:8080/jenkins/;

                proxy_redirect http:// https://;

                sendfile off;

                proxy_set_header   Host             $host:$server_port;

                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;

                proxy_set_header   X-Forwarded-Port 443;

                proxy_max_temp_file_size 0;

                client_max_body_size       10m;

                client_body_buffer_size    128k;

                proxy_connect_timeout      90;

                proxy_send_timeout         90;

                proxy_read_timeout         90;

                proxy_temp_file_write_size 64k;

                proxy_http_version 1.1;

                proxy_request_buffering off;

          }

        ssl on;

        ssl_stapling on;

        ssl_stapling_verify on;

        ssl_certificate /etc/pki/tls/certs/server.crt;

        ssl_certificate_key /etc/pki/tls/certs/server.key;

        ssl_session_timeout 5m;

        ssl_session_cache shared:SSL:20m;

        ssl_session_tickets off;

        ssl_protocols TLSv1 TLSv1.1 TLSv1.2;

        ssl_prefer_server_ciphers on;

        ssl_ciphers 'HIGH:AES-GCM:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-CBC-SHA:ECDHE-RSA-AES128-GCM-SHA256:!SSLv3:!SSLv2:!EXPORT:!DH:!DES:!3DES:!MD5:!DHE:!ADH:!EDH';

        ssl_ecdh_curve secp384r1;

        add_header Strict-Transport-Security "max-age=63072000; includeSubdomains";

        add_header X-Frame-Options DENY;

        add_header X-Content-Type-Options nosniff;

    }

}

thank
SR

Ensure the url you use to access jenkins and the setting Jenkins URL are same.

For ex. I access my jenkins via browser using http://example.com so I set my Jenkins URL to http://example.com. If you set it to http://<IP_address> for example you will see the error you are reporting.