[BUG] Generate graph functionality appears broken

[Erasure5959]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

When attempting to use the Generate function on any graph, you are redirected to localhost/{path} rather than the IP address or FQDN. I have tested this through reverse proxy as well as directly via IP address with the same result. Testing this on the host which is running the container works (obviously, as localhost is valid).

I have furthermore tried this with my own compose file as well as creating on a separate VM and using the compose file provided - same result.

If you modify the redirected URL and update it to IP/FQDN instead of localhost, the graph renders as expected.

Expected Behavior

The graph generate function should generate a graph and redirect correctly, not to localhost.

Steps To Reproduce

• Run Smokeping in Docker (run/compose).
• Choose any graph or destination.
• Enter any timerange or leave as is and click Generate.
• Observe redirect to localhost.

Environment

- OS: Debian 12 (Bookworm).
- How docker service was installed: Docker repository via apt.

CPU architecture

x86-64

Docker creation

services:

 smokeping:
    container_name: "smokeping"
    hostname: smokeping
    image: "lscr.io/linuxserver/smokeping"
    environment:
      PUID: "1001"
      PGID: "1001"
      TZ: "Africa/Johannesburg"
    networks:
      - "smokeping"
    healthcheck:
      test: ["CMD", "curl", "-s", "-f", "-i", "http://localhost/smokeping/"]
      interval: 60s
      timeout: 15s
      start_period: 15s
    volumes:
      - type: bind                                                    
        source: /opt/docker/smokeping/config
        target: /config
      - type: bind                                                    
        source: /opt/docker/smokeping/data
        target: /data
    ports:
      # To be able to listen on port 80
      - mode: host
        published: 80
        target: 80
        protocol: tcp
    restart: "unless-stopped"
    deploy:
      resources:
        limits:
          cpus: '0.50'
          memory: 200M
          pids: 50
    security_opt:
      - no-new-privileges:true

networks:

  smokeping:
    name: "smokeping"
    enable_ipv6: true

Container logs

[migrations] started
[migrations] no migrations found
usermod: no changes
───────────────────────────────────────

      ██╗     ███████╗██╗ ██████╗
      ██║     ██╔════╝██║██╔═══██╗
      ██║     ███████╗██║██║   ██║
      ██║     ╚════██║██║██║   ██║
      ███████╗███████║██║╚██████╔╝
      ╚══════╝╚══════╝╚═╝ ╚═════╝

   Brought to you by linuxserver.io
───────────────────────────────────────

To support LSIO projects visit:
https://www.linuxserver.io/donate/

───────────────────────────────────────
GID/UID
───────────────────────────────────────

User UID:    1001
User GID:    1001
───────────────────────────────────────
Linuxserver.io version: 2.9.0-r0-ls146
Build-date: 2025-08-26T20:42:48+00:00
───────────────────────────────────────
    
[custom-init] No custom files found, skipping...
Connection to localhost (::1) 80 port [tcp/http] succeeded!
[ls.io-init] done.
WARNING: Hostname 'ipv6.google.com' does currently not resolve to an IPv4 address
### parsing dig output...OK
Smokeping version 2.009000 successfully launched.
Entering multiprocess mode.
Child process 213 started for probe FPing.
FPing: probing 35 targets with step 300 s and offset 264 s.
Child process 214 started for probe DNS.
DNS: probing 14 targets with step 300 s and offset 201 s.
Child process 215 started for probe FPing6.
All probe processes started successfully.FPing6: probing 1 targets with step 300 s and offset 244 s.

/usr/sbin/fping -C 20 -q -B1 -r1 -i10 www.uea.ac.uk 208.67.222.222 www.indiana.edu twin-cities.umn.edu cam.ac.uk 9.9.9.9 4.2.2.1 jupiterbroadcasting.com cixp.web.cern.ch 1.0.0.1 ucsd.edu 2606:4700:4700::1001 208.67.220.220 4.2.2.2 youtube.com linuxserver.io 8.8.4.4 www.berkeley.edu 2620:fe::fe www.telefonica.de osuosl.org 8.8.8.8 google.com 2606:4700:4700::1111 1.1.1.1 web.mit.edu 2620:fe::9 149.112.112.112 facebook.com returned with exit code 512. run with debug enabled to get more information at /usr/share/smokeping/Smokeping.pm line 1837.
/usr/bin/dig @4.2.2.2 google.com returned with exit code 2304. run with debug enabled to get more information at /usr/share/smokeping/Smokeping.pm line 1837.
/usr/bin/dig @4.2.2.1 google.com returned with exit code 2304. run with debug enabled to get more information at /usr/share/smokeping/Smokeping.pm line 1837.

[github-actions]

Thanks for opening your first issue here! Be sure to follow the relevant issue templates, or risk having this issue marked as invalid.

[nrvous82]

I've found the same issue. Generate links the a localhost domain. Updating the CGIURL to a relative path isn't a workaround.

[nasaboy]

Yes, click the “Generate” button and the problem you mentioned will appear

[LinuxServer-CI]

This issue has been automatically marked as stale because it has not had recent activity. This might be due to missing feedback from OP. It will be closed if no further activity occurs. Thank you for your contributions.

[Erasure5959]

Not stale, unattended.

[maxysoft]

I don't know if you solved by updating the image (I see version 146 in your logs) but I can't reproduce the issue with version 151 and 155. Also, in my setup I have a double reverse proxy.

Clicking on generate is making a POST

23:14:08.528 POST
https://smokeping.domain.com/smokeping/smokeping.cgi?displaymode=n;start=2025-10-20;end=now;target=CloudProviders.OVH-Beauharnois;
[HTTP/3 200  95ms]
Transferred3.33 kB (7.67 kB size)

Response is:
https://smokeping.domain.com/smokeping/smokeping.cgi?displaymode=n;start=2025-10-20;end=now;target=CloudProviders.OVH-Beauharnois;
so no localhost domain

[nasaboy]

version 155 still have the problem

[maxysoft]

version 155 still have the problem

Have you tried setting the container's hostname?

services:
  smokeping:
    image: lscr.io/linuxserver/smokeping:2.9.0-r0-ls155
    container_name: smokeping
    hostname: smokeping.domain.com
    restart: unless-stopped

Also cgiurl in General. I only have these 2 variables set with the domain. If still doesn't work and you're behind a reverse proxy then the issue is probably there.

[nasaboy]

Update: Just change "localhost" after "cgiurl" to your own domain name.
here is my compose.yml

services:
  smokeping:
    image: lscr.io/linuxserver/smokeping:latest
    container_name: smokeping
    hostname: KR-SEOUL
    environment:
      - PUID=1001
      - PGID=1001
      - TZ=Asia/Shanghai
    volumes:
      - /home/ubuntu/smokeping/config:/config
      - /home/ubuntu/smokeping/data:/data
    ports:
      - 80:80
    restart: unless-stopped

That might be a path issue in the General section. I haven't modified the cgiurl

owner    = *
contact  = *@*com
mailhost = my.mail.host
# NOTE: do not put the Image Cache below cgi-bin
# since all files under cgi-bin will be executed ... this is not
# good for images.
cgiurl   = http://localhost/smokeping/smokeping.cgi
# specify this to get syslog logging
syslogfacility = local0
# each probe is now run in its own process
# disable this to revert to the old behaviour
# concurrentprobes = no

@include /config/pathnames

[LinuxServer-CI]

This issue has been automatically marked as stale because it has not had recent activity. This might be due to missing feedback from OP. It will be closed if no further activity occurs. Thank you for your contributions.