Using A Path Rewrite / Redirect In HA Proxy

Question

I am using HA Proxy, I have a path redirect set and that works, the path redirects to webmin but it does not load any css and when submitting the login, its to the domain and not the path like it should be.

I am not sure if this is an Ha Proxy issue or not, maybe a config option in webmin to make it run from a folder / path?

This is my config for Ha Proxy

frontend public
    # Listen on ports 80 and 443
    bind *:80
    # bind *:443 ssl crt /xxxxx

    mode http

    # Define ACLs for each domain
    acl admin url_beg  /webmin
    #acl admin path_beg -i /webmin

    # Figure out which backend (= VM) to use
    use_backend webmin if admin

backend webmin
    #http-request set-path %[path,regsub(^/webmin/,/)]
    #http-request set-path /webmin/%[path]
    #http-request replace-uri ([^/:]*://[^/]*)?(.*) \1/webmin\2 if !remove_webmin
    #http-request set-header X-Forwarded-Port %[dst_port]
    #http-request add-header X-Forwarded-Proto https if { ssl_fc }
    http-request set-header Host xxxx/webmin
    #http-response replace-value Location (.*):.* \1/webmin
    #rspadd Strict-Transport-Security:\ max-age=15768000;\ includeSubDomains
    #rspadd X-XSS-Protection:\ 1;\ mode=block

    http-request set-path %[path,regsub(^/webmin/,/)]
    #http-request set-path /webmin/

    http-request set-header Host %[src]
    http-request set-header X-Forwarded-For %[src]
    http-request set-header X-Forwarded-Port %[dst_port]
    http-request set-header Connection "keep-alive"

    #acl missing_slash path_reg ^/webmin/[^/]*$
    #http-request redirect code 301 prefix /webmin drop-query append-slash if missing_slash

    #balance leastconn
    #option httpclose
    #option forwardfor
    #cookie JSESSIONID prefix

    # Redirect To Webmin
    server webadmin 127.0.0.1:10000 check

Any help is most welcome,

Thanks,

Answer 1

So I have a working solution here, its not just about ha proxy but you have to set a preix path in webmin as well.

Sidenote, maybe dont use 'webmin' as the folder / path redirect. As the webmin configuation settings seem to use that path, so you end up with 'webmin/webmin'

HA Proxy Config

frontend public
  # Listen on ports 80 and 443
  bind *:80
  # bind *:443 ssl crt xxxxx

  mode http

  # Define ACLs for each domain
  acl admin url_beg  /webmin
  #acl app hdr(host) -i xxxxx.com

  use_backend webmin if admin

backend webmin
  http-request set-header Host DONAME-NAME-HERE/webmin
  http-request set-path %[path,regsub(^/webmin/,/)]
  http-request set-header X-Forwarded-For %[src]
  http-request set-header X-Forwarded-Port %[dst_port]
  http-request set-header Connection "keep-alive"

  http-response set-header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
  http-response set-header X-Frame-Options SAMEORIGIN
  http-response set-header X-XSS-Protection "1; mode=block"

  balance leastconn
  option httpclose
  option forwardfor
  cookie JSESSIONID prefix

  http-response replace-value Location (.*):.* \1/

  # Redirect To Webmin
  server webadmin 127.0.0.1:10000 check

Webmin Config file

referer=xxxx/webmin/
host=xxx/webmin/
webprefix=/webmin
webprefixnoredir=1