Failed configuration with Nginx as Reverse Proxy

Grafana Configuration
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1

  • What Grafana version and what operating system are you using?
    OS: Red Hat Enterprise Linux 8.6
    Grafana version: 9.4.3

  • What are you trying to achieve?
    I’m trying to expose Grafana @ http://my_domain/grafana

  • How are you trying to achieve it?
    I’m trying to use Nginx to expose Grafana

  • What happened?
    It seems like the configuration does not work.
    When I enter the browser at http://my_domain/grafana I am redirected to http://my_domain/login and a 404 Nginx error appears.
    Also from logs I’m seeing errors attached below.

In case I enter http://my_domain/grafana/login in the browser, I land to this page:

immagine
immagine1503×891 42.6 KB

  • What did you expect to happen?
    To reach the Grafana login page.

  • Can you copy/paste the configuration(s) that you are having problems with?

Nginx config:

http {
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

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

    sendfile            on;
    tcp_nopush          on;
    tcp_nodelay         on;
    keepalive_timeout   65;
    types_hash_max_size 2048;

    include             /etc/nginx/mime.types;
    default_type        application/octet-stream;

    # Load modular configuration files from the /etc/nginx/conf.d directory.
    # See http://nginx.org/en/docs/ngx_core_module.html#include
    # for more information.
    include /etc/nginx/conf.d/*.conf;


    map $http_upgrade $connection_upgrade {
        default upgrade;
        '' close;
    }


    upstream grafana {
 	server localhost:3000;
    }

    server {
        listen       80 default_server;
        listen       [::]:80 default_server;
        server_name  _;
        root         /usr/share/grafana/;

        # Load configuration files for the default server block.
        include /etc/nginx/default.d/*.conf;

        location / {
        }

	location /grafana/ {
            rewrite  ^/grafana/(.*)  /$1 break;
            # proxy_set_header Host $http_host;
            proxy_pass http://grafana;
            include /etc/nginx/proxy.conf;
        }

        # Proxy Grafana Live WebSocket connections.
        location /grafana/api/live/ {
            rewrite  ^/grafana/(.*)  /$1 break;            
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection $connection_upgrade;
            proxy_set_header Host $http_host;
            proxy_pass http://grafana;
        }

        error_page 404 /404.html;
            location = /40x.html {
        }

        error_page 500 502 503 504 /50x.html;
            location = /50x.html {
        }
    }

Grafana config:

#################################### Server ####################################
[server]
# Protocol (http, https, h2, socket)
;protocol = http

# The ip address to bind to, empty will bind to all interfaces
;http_addr =

# The http port  to use
;http_port = 3000

# The public facing domain name used to access grafana from a browser
;domain = localhost

# Redirect to correct domain if host header does not match domain
# Prevents DNS rebinding attacks
;enforce_domain = false

# The full public facing url you use in browser, used for redirects and emails
# If you use reverse proxy and sub path specify full url (with sub path)
;root_url = %(protocol)s://%(domain)s:%(http_port)s/grafana/

# Serve Grafana from subpath specified in `root_url` setting. By default it is set to `false` for compatibility reasons.
;serve_from_sub_path = false

# Log web requests
;router_logging = true

# the path relative working path
;static_root_path = public

# enable gzip
;enable_gzip = false

# https certs & key file
;cert_file =
;cert_key =

# Unix socket gid
# Changing the gid of a file without privileges requires that the target group is in the group of the process and that the process is the file owner
# It is recommended to set the gid as http server user gid
# Not set when the value is -1
;socket_gid =

# Unix socket mode
;socket_mode =

# Unix socket path
;socket =

# CDN Url
;cdn_url =

# Sets the maximum time using a duration format (5s/5m/5ms) before timing out read of an incoming request and closing idle connections.
# `0` means there is no timeout for reading the request.
;read_timeout = 0
  • Did you receive any errors in the Grafana UI or in related logs? If so, please tell us exactly what they were.
    Error from Nginx logs:
3.122.88.128 - - [13/Mar/2023:09:53:09 +0000] "GET /grafana/ HTTP/1.1" 302 29 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/110.0" "-"
3.122.88.128 - - [13/Mar/2023:09:53:09 +0000] "GET /login HTTP/1.1" 404 169 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/110.0" "-"
3.122.88.128 - - [13/Mar/2023:09:53:09 +0000] "GET /favicon.ico HTTP/1.1" 404 169 "http://datalab/login" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/110.0" "-"
  • Did you follow any online instructions? If so, what is the URL?

Yes, I followed the doc: Run Grafana behind a reverse proxy | Grafana Labs