Automated Installation can't find answers file via HTTP

[ubers]

Hello All,

Proxmox Automated installed is not able to find my answers file located at proxmox-auto-installer.mp.lan even though I can reach the file via browser. What are the steps I can take for troubleshooting?

 

[aaron]

Anything in the logs of the webserver? It got an empty response. It might be due to this bug https://forum.proxmox.com/threads/invalid-charset-on-automated-install-answer-http-fetch.145856/ that the webserver is not responding.

 

[ubers]

Here are the logs from proxmox-auto-installer.mp.lan, its not receiving any web traffic from the host undergoing installation

 

[aaron]

hmm, if the installer is in that situation and drops you into a shell, try to ping the subdomain and see if it uses the correct IP. You can also run wget https://url.to/answer.toml
Another thing I could imagine, the webserver is using a self signed CERT and no fingerprint is provided? That would explain why the request never gets to the server as it fails in the cert verification process. Though the error should be more descriptive IIRC.

 

[ubers]

I am able to wget proxmox-auto-installer.mp.lan, but not https://proxmox-auto-installer.mp.lan. I will attempt to get https working and see if that fixes the issue

 

[aaron]

I checked the code and the "Got empty response" message should appear if the DNS lookup for the TXT record doesn't return anything.
What is the output of dig txt proxmox-auto-installer.mp.lan? Did you specify the url as a DNS record of type TXT? It should not be an A or AAAA record!
The url can point to another host / domain entirely. Just the TXT record needs to be at the predefined subdomain.

e.g.

dig txt +short proxmox-auto-installer.mp.lan
"http://other-server.mp.lan/get-proxmox-install-answer.cgi"

would be valid and would cause the auto installer to send the http request to that URL, and await the contents of the answer file as response.

 

[ubers]

It is an A record, ill try to get a TXT record setup.

; <<>> DiG 9.10.6 <<>> txt proxmox-auto-installer.mp.lan
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 42482
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;proxmox-auto-installer.mp.lan.    IN    TXT

;; Query time: 7 msec
;; SERVER: 10.133.7.129#53(10.133.7.129)
;; WHEN: Sat May 04 00:39:41 PDT 2024
;; MSG SIZE  rcvd: 58