this post was submitted on 06 Jul 2023
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Selfhosted OpenMediaVault not reachable from raspberry pi (lemmy.ml)
submitted 1 year ago by cloudwanderer@lemmy.ml to c/selfhosted@lemmy.world
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Hello!

I've been running into an oddity and i can not find the root cause.

Situation

I have installed OMV on my raspberry pi 4 4GB via: wget -O - https://raw.githubusercontent.com/OpenMediaVault-Plugin-Developers/installScript/master/install | sudo bash I also needed to use usrmerge before the installation: sudo apt install usrmerge

After completion, while being connected via ssh, i can query the omv website and it works fine: curl localhost

However whenever i try to access it via the browser, it does not. I have ran omv-firstaid as well just to be sure, but that does not change anything.

Network

My Network is connected via ethernet to a repeater (Fritzbox 4040), which in turn connects to the router via ethernet (Frityzbox 7490). Another repeater is also connected.

All are connected as a singular Mesh.

Question

I can connect via port 22 to my pi from anywhere in my house. It works fine and stable due to the mesh. However i can not connect to port 80 for OMV.

I've tried port forwarding on my network mesh, but that did not change anything.

I also tried for testing purposes a tunnel via ssh ssh -L 80:localhost:80 pi@raspberrypi.local but that resulted in a:

bind [::1]:80: Permission denied channel_setup_fwd_listener_tcpip: cannot listen to port: 80 Could not request local forwarding

Which makes me think it might be the network on the pi. However I am new to linux networking and therefor would like to ask for your ideas.

Any ideas on what could be cause?

Thanks in advance for the help!

(Crosspost from lemmy.ml )

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[–] cloudwanderer@lemmy.ml 1 points 1 year ago (1 children)

Thanks for the hints, this definitely helped, however it did not solve the issue.

What i did:

  1. I changed via omv-firstaid the omv port from 80 to 8081.
  2. I confirmed with ss -ltn that this change was successful and i see the listening port 80 vanished, while this now popped up:

State Recv-Q Send-Q Local Address:Port Peer Address:Port

LISTEN 0 511 0.0.0.0:8081 0.0.0.0:*

  1. I tested locally via ssh from the pi the connection via curl http://mylocalip:8081/ and it works, i get the html back
  2. I tested from my laptop (connected to my router via WiFi, where the raspberry is meshed into via the repeater in between) and i still get the timeout.
  3. I tried tunneling again via ssh ssh -L 8081:localhost:8081 pi@raspberrypi.local and i did not get any errors this time. However when i open the local url in the browser i get a connection reset and my terminal shows me channel 3: open failed: administratively prohibited: open failed. However this just says that TcPForwarding is disabled, which is fine, so that tunneling issue should not be the main problem, i assume.
[–] NeoLikesLemmy@lemmy.fmhy.ml 2 points 1 year ago

Now I would double check your name services.

First reboot the Fritz 7490, then the Fritz 4040.

Then ping from everywhere to your Pi AND also ping from the Pi to every other machine: all the names must resolve to the proper addresses.