Perfect, this is exactly the chunk I needed to “remember” what we did.

Let me stitch this together into “how to put Caddy back in place” given where we left off:

There are really two layers to “putting Caddy back”:

1. Re-enabling the Caddy apt repo (we disabled it with Option A).
2. Getting the Caddy service + HTTPS certs working again so your browser will allow microphone access.

I’ll walk you through both.

---

1. Re-enable the Caddy apt repo

If earlier we did Option A, you probably have this:

ls /etc/apt/sources.list.d

You’ll likely see:

caddy-stable.list.disabled

Step 1: Rename it back

sudo mv /etc/apt/sources.list.d/caddy-stable.list.disabled \
        /etc/apt/sources.list.d/caddy-stable.list

Step 2: Re-add/fix the GPG key (so apt stops whining)

Run:

sudo mkdir -p /usr/share/keyrings

curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' | \
  sudo gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg

Now make sure /etc/apt/sources.list.d/caddy-stable.list looks roughly like this:

deb [signed-by=/usr/share/keyrings/caddy-stable-archive-keyring.gpg] \
  https://dl.cloudsmith.io/public/caddy/stable/deb/debian any-version main

(If the signed-by=... bit isn’t there, add it.)

Step 3: Update and reinstall Caddy if needed

sudo apt update
sudo apt install caddy

If that runs clean, the Caddy repo is now “back in place” and working.

---

2. Restore Caddy + HTTPS for your local site

This is the part that gives you HTTPS on ougway.local so the browser will allow mic access.

Earlier, you had:

• A cert + key in /etc/ssl/caddy/ougway.local.pem and /etc/ssl/caddy/ougway.local-key.pem
• Caddy trying to read them, but failing with permission denied.

Let’s fix that and wire it back up.

Step 1: Fix cert permissions

Check the files:

ls -l /etc/ssl/caddy

You want something like:

-rw-r----- 1 caddy caddy  ... ougway.local.pem
-rw------- 1 caddy caddy  ... ougway.local-key.pem

If they’re owned by root:root (or anything else), fix them:

sudo chown caddy:caddy /etc/ssl/caddy/ougway.local.pem
sudo chown caddy:caddy /etc/ssl/caddy/ougway.local-key.pem

sudo chmod 640 /etc/ssl/caddy/ougway.local.pem
sudo chmod 600 /etc/ssl/caddy/ougway.local-key.pem

> Key idea: the caddy user must be able to read both files, and the key should not be world-readable.

---

Step 2: Put the Caddyfile back the way we want it

Open /etc/caddy/Caddyfile:

sudo nano /etc/caddy/Caddyfile

A minimal Caddyfile for a local HTTPS reverse proxy to something like OpenWebUI or Diffusers looks like this (adjust the port to whatever your app uses):

ougway.local {
    tls /etc/ssl/caddy/ougway.local.pem /etc/ssl/caddy/ougway.local-key.pem

    # If OpenWebUI (or whatever) is on port 8080:
    reverse_proxy 127.0.0.1:8080
}

If your app is on a different port (3000, 7860, etc.), just change 8080 accordingly.

Save and exit.

---

Step 3: Enable and start Caddy again

sudo systemctl daemon-reload
sudo systemctl enable caddy
sudo systemctl restart caddy
sudo systemctl status caddy --no-pager -l

You want to see it active (running), not failed or permission denied.

If you still see a permissions error, it will almost certainly mention the key path again—then it’s just a matter of adjusting chown/chmod until caddy can read it.

---

Step 4: Test from your browser

On any machine on your LAN that can resolve ougway.local to your box:

1. Visit: https://ougway.local
2. The browser may show a warning (since it’s a local/mkcert cert) — accept/trust it.
3. Once loaded over HTTPS, your mic-based features (for OpenWebUI, etc.) should be available again.

---

Quick recap

To “put Caddy back in place” based on what we did before:

• Undo the repo disable:
• Rename caddy-stable.list.disabled → caddy-stable.list.
• Add the Cloudsmith GPG key.
• sudo apt update && sudo apt install caddy.
• Restore TLS + proxy:
• Ensure /etc/ssl/caddy/ougway.local*.pem are owned by caddy:caddy and not world-readable.
• Restore a simple ougway.local { tls ...; reverse_proxy ... } block in /etc/caddy/Caddyfile.
• systemctl enable --now caddy and confirm it’s running.

If you want, you can paste the current contents of:

• ls -l /etc/ssl/caddy
• /etc/caddy/Caddyfile
• and the last few lines of sudo systemctl status caddy --no-pager -l

and I’ll line-edit exactly what to change.

Good — both of those behaviors make sense on Linux, and here’s how to handle each one cleanly.

---

✅ 1. “How do I look at /etc/apt/sources.list.d/caddy-stable.list?”

Your file manager won’t show system folders like /etc/apt/... unless you open it as root (which Ubuntu disables by default).

So you view/edit these files from the terminal, like this:

View the file:

cat /etc/apt/sources.list.d/caddy-stable.list

Or open it in a text editor (recommended):

sudo nano /etc/apt/sources.list.d/caddy-stable.list

That opens it directly, no file manager needed.

---

✅ 2. “ls: cannot open directory '/etc/ssl/caddy': Permission denied”

Correct — that directory is restricted to root, because it contains cryptographic private keys.

To view its contents:

sudo ls -l /etc/ssl/caddy

Using sudo is required to see inside that folder.

---

🚀 Here’s what to do next (step-by-step)

Step A: List the Caddy repo file

ls /etc/apt/sources.list.d

Look for:

caddy-stable.list
caddy-stable.list.disabled

Tell me what appears.

Step B: Look inside the SSL folder

sudo ls -l /etc/ssl/caddy

Paste the output so I can see what cert/key files are there and whether ownership looks wrong.

---

If you'd like, paste both outputs:

1. ls /etc/apt/sources.list.d
2. sudo ls -l /etc/ssl/caddy

Once I see those, I’ll tailor the exact commands to fully restore Caddy and HTTPS.

Perfect — this tells me everything I need.
Your Caddy repo is already re-enabled, and the .list file is valid and correct.

Now we just need to:

1. Make sure the GPG key exists (or reinstall it).
2. Check the Caddy cert folder.
3. Restart Caddy cleanly.

Let’s proceed step-by-step.

---

✅ STEP 1 — Reinstall the Caddy GPG Key (safe even if it exists)

Run this exactly:

sudo mkdir -p /usr/share/keyrings

curl -1sLf "https://dl.cloudsmith.io/public/caddy/stable/gpg.key" | \
  sudo gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg

If it succeeds silently → you’re good.

Then:

sudo apt update

If there is no NO_PUBKEY error, then the repo is 100% fixed.

Tell me if apt shows any errors here.

---

✅ STEP 2 — View contents of the SSL directory (requires sudo)

Earlier you ran:

ls: cannot open directory '/etc/ssl/caddy': Permission denied

Correct — the folder requires root.

Now run:

sudo ls -l /etc/ssl/caddy

Paste the output.

I need to see:

• names of the certs
• their owners
• their permissions

This will tell me exactly why Caddy was previously failing with:

permission denied /etc/ssl/caddy/ougway.local-key.pem

---

Once you paste that output, I’ll tell you EXACTLY what to fix

There are only two possibilities:

A) The files exist but are owned by root → we fix with chown caddy:caddy

B) The files are missing → we regenerate them with mkcert

…or with OpenSSL if restoring mkcert is needed.

Either way, I can repair it in < 60 seconds once I see the listing.

---

Go ahead and run:

sudo apt update
sudo ls -l /etc/ssl/caddy

Great — this confirms the exact problem and the fix is easy.

Your certs have this ownership:

-rw-r----- 1 root caddy  ougway.local-key.pem
-rw-r----- 1 root caddy  ougway.local.pem

This means:

• Group = caddy → OK
• Owner = root → NOT OK
• Permissions = 640 → NOT OK for private key

Caddy runs as user caddy, so it cannot read a file owned by root unless the group permissions are more open — but for private keys, group-read must be restricted to only caddy.

So we fix ownership + permissions like this:

---

✅ STEP 1 — Fix ownership of both cert files

Run:

sudo chown caddy:caddy /etc/ssl/caddy/ougway.local.pem
sudo chown caddy:caddy /etc/ssl/caddy/ougway.local-key.pem

---

✅ STEP 2 — Fix permissions (private key must NOT be group-readable)

Recommended:

sudo chmod 640 /etc/ssl/caddy/ougway.local.pem
sudo chmod 600 /etc/ssl/caddy/ougway.local-key.pem

This makes:

• cert: readable by caddy
• key: readable only by caddy

---

✅ STEP 3 — Restart Caddy

sudo systemctl restart caddy
sudo systemctl status caddy --no-pager -l

You should now see:

active (running)

If you see that → your HTTPS is repaired.

---

🚀 NEXT QUESTION: “I want to open the Diffuser webpage from other machines on my LAN”

Right now, your app (Diffusers / A1111 API / OpenWebUI back-end?) is probably binding to localhost only, like:

127.0.0.1:xxxx

This means the service is ONLY accessible from the PC itself.

To make it accessible LAN-wide through Caddy, you have two options:

---

OPTION A (best): Serve it through Caddy on HTTPS

In your /etc/caddy/Caddyfile, you probably have:

ougway.local {
    tls /etc/ssl/caddy/ougway.local.pem /etc/ssl/caddy/ougway.local-key.pem
    reverse_proxy 127.0.0.1:8080
}

If the diffuser UI is on a different port, change it:

• A1111 web UI = often 7860
• OpenWebUI = often 3000, sometimes 8080
• Diffusers API = depends on your setup

Whatever port it is, plug it in here.

Example:

ougway.local {
    tls /etc/ssl/caddy/ougway.local.pem /etc/ssl/caddy/ougway.local-key.pem
    reverse_proxy 127.0.0.1:7860
}

Then from ANY machine on your LAN:

https://ougway.local

…will open your diffuser interface.

You do NOT need to expose that port directly.

---

OPTION B: Run the app on 0.0.0.0 instead of 127.0.0.1

For example:

python -m diffusers.api --host 0.0.0.0

That makes it accessible on:

http://192.168.x.x:YOUR_PORT

But this is not secure, and browsers will still block microphone access due to no HTTPS.

This is why Caddy is the right solution.

---

👉 What I need from you next

Tell me which app/port you want exposed to the LAN:

• OpenWebUI (web interface)
• Automatic1111
• Diffusers API
• Gemini / GNI Node server
• Something else?

And paste this:

sudo ss -tulnp

Then I’ll:

• verify which ports your services are actually listening on
• build an exact, correct, clean Caddyfile for you
• make LAN access work
• keep HTTPS so your mic feature works

You're 95% done — just need the port details.

Perfect — Automatic1111 (A1111) normally runs on port 7860, binds to 127.0.0.1, and does not provide HTTPS by itself.
Using Caddy is the correct way to publish it to your LAN securely and get microphone access working.

Below is the exact configuration you need.

---

✅ STEP 1 — Update your Caddyfile for A1111

Open:

sudo nano /etc/caddy/Caddyfile

Replace the contents (or add a new block) with:

ougway.local {
    tls /etc/ssl/caddy/ougway.local.pem /etc/ssl/caddy/ougway.local-key.pem

    # Forward HTTPS traffic to Automatic1111
    reverse_proxy 127.0.0.1:7860
}

Save: CTRL + O, then exit CTRL + X.

---

✅ STEP 2 — Restart Caddy

sudo systemctl restart caddy
sudo systemctl status caddy --no-pager -l

Look for:

active (running)

If it's running → good.

---

✅ STEP 3 — Access A1111 from other machines on your LAN

From ANY device on the LAN, open:

https://ougway.local

✔ That will show your A1111 web UI
✔ Over HTTPS
✔ Mic access (if the browser needs it for extensions) will work
✔ DNS should resolve normally if you have mDNS enabled (Ubuntu does by default)

If the device cannot resolve ougway.local, use:

https://ougway.local.local

OR worst-case:

https://192.168.x.x

(with a browser trust prompt because cert is for ougway.local, not IP)

---

OPTIONAL (but recommended for clean operation)

Ensure A1111 binds to localhost (the default) so it’s not exposed without HTTPS.

If you have a manual launch script for A1111, make sure it does NOT use:

--listen
--listen-port
--share

Unless explicitly needed.

Normal safe launch:

python launch.py

or your preferred script — as long as it binds to 127.0.0.1, we're good.

---

🟦 If ougway.local doesn’t resolve on other machines

Check whether mDNS is running:

On Ubuntu box:

systemctl status avahi-daemon

If inactive:

sudo systemctl enable --now avahi-daemon

Then ougway.local will resolve automatically from Windows, Mac, Linux, iOS, Android.

---

If you want, I can generate:

• A full Caddyfile
• A systemd service wrapper for A1111
• An optional password-protected gateway
• A LAN-only access mode
• A combined A1111 + Diffusers + OpenWebUI multi-route setup

Just tell me.

Do you want A1111 to be the only thing behind HTTPS,
or do you want:

• https://ougway.local/a1111
• https://ougway.local/openwebui
• https://ougway.local/diffuser
• etc.

We can build a full multi-service gateway.

Nice, that error is actually very informative:

> Error: adapting config using caddyfile: ambiguous site definition: ougway.local

That means:
📌 You have ougway.local defined more than once in /etc/caddy/Caddyfile.
Caddy refuses to start when the same site label is duplicated.

We just need to make sure there’s only one ougway.local { ... } block.

---

1️⃣ Find the duplicate ougway.local blocks

Run:

sudo grep -n 'ougway.local' /etc/caddy/Caddyfile

You’ll see 2 or more lines with ougway.local on them — that’s the problem.

Now open the file to fix it:

sudo nano /etc/caddy/Caddyfile

---

2️⃣ Clean it up: keep ONE block, delete or comment the others

Inside the Caddyfile, you probably have something like:

ougway.local {
    # ... old stuff here ...
}

# later in the file

ougway.local {
    tls /etc/ssl/caddy/ougway.local.pem /etc/ssl/caddy/ougway.local-key.pem
    reverse_proxy 127.0.0.1:7860
}

Caddy sees two separate site definitions with the same label ougway.local → ambiguous.

Easiest fix (for now):

Option A – Only keep the new one we just made

1. Find the earlier ougway.local { ... } block.
2. Either:
   – delete that whole block, or
   – comment it out by putting # in front of each line, like:

caddyfile
# ougway.local {
# # old config
# }

3. Leave only one active block that looks like:

caddyfile
ougway.local {
tls /etc/ssl/caddy/ougway.local.pem /etc/ssl/caddy/ougway.local-key.pem
reverse_proxy 127.0.0.1:7860
}

Save (Ctrl+O, Enter) and exit (Ctrl+X).

---

3️⃣ Restart Caddy

sudo systemctl restart caddy
sudo systemctl status caddy --no-pager -l

You want:

Active: active (running)

If it’s running, Caddy is happy and:

• https://ougway.local should now open the A1111 UI
• from this machine and from other machines on your LAN (as long as ougway.local resolves).

---

4️⃣ Test from another machine on the LAN

On another PC/phone on your network, try:

https://ougway.local

You may get a “not secure / self-signed” warning the first time — accept/trust it.

If ougway.local doesn’t resolve, we can:

• use https://<your-LAN-IP> temporarily, or
• tweak mDNS / hosts file so the name works cleanly.

---

If you want, you can paste the full contents of /etc/caddy/Caddyfile and I’ll hand-edit it into a clean, multi-service config for you (A1111 now, diffuser/OpenWebUI later) with zero ambiguity.

Great — now we’re at the real design question:

> “Don’t we need both ports though?”

Yes, but not as two ougway.local blocks.
Caddy does not allow duplicate site labels.

Instead, you have one ougway.local { … } block,
and inside it you create routes for each service.

This is the correct, clean, future-proof way to host multiple services behind one HTTPS domain.

---

✅ The Right Way: One domain, multiple paths

Here is exactly how to serve:

• OpenWebUI (8080)
• A1111 (7860)

under the same domain https://ougway.local, cleanly and safely.

Replace your entire Caddyfile with this:

ougway.local {
    tls /etc/ssl/caddy/ougway.local.pem /etc/ssl/caddy/ougway.local-key.pem

    # Root route (default) goes to OpenWebUI on 8080
    reverse_proxy / http://127.0.0.1:8080

    # Route /a1111 to Automatic1111 on 7860
    handle_path /a1111* {
        reverse_proxy http://127.0.0.1:7860
    }
}

Save and restart:

sudo systemctl restart caddy
sudo systemctl status caddy --no-pager -l

If you see active (running) → success.

---

✅ How to access the services now

OpenWebUI

https://ougway.local

Automatic1111

https://ougway.local/a1111

Browser will use HTTPS → microphone permissions will work.

LAN clients can access both.

---

Why this works

Caddy routing rules say:

• / (root) → send traffic to OpenWebUI on 8080
• /a1111 → strip the prefix and reverse proxy to A1111 on 7860

This avoids:

• duplicate host definitions
• port conflicts
• needing multiple certificates
• needing multiple DNS names

And it gives you a clean portal for future services, e.g.:

• /diffusers
• /gni
• /stablediffusionxl
• /openwebui2
• /webui2

…all under one domain.

---

If you want even cleaner URLs

I can also set up subdomains:

• a1111.ougway.local
• ui.ougway.local
• diffuser.ougway.local

All with the same certificate and same LAN accessibility.

Just say the word.

---

If you're ready, paste:

sudo systemctl status caddy --no-pager -l

after you restart — I’ll verify it's perfect.

Right, this all fits together:

• ✅ Caddy / HTTPS / routing are basically fine.
• 🔴 What’s breaking things (and causing the 500s from other machines) is the CUDA out-of-memory crash in the backend (A1111 / SD-WebUI).
• When the backend dies with OOM, Caddy has nothing to talk to → “500 internal error” to the browser. Local vs remote doesn’t matter; it’s just more obvious remotely.

Let’s untangle it step-by-step.

---

1. What the error is actually saying

Key bit from the traceback:

torch.cuda.OutOfMemoryError: CUDA out of memory. Tried to allocate 20.00 MiB.
GPU 0 has a total capacty of 11.63 GiB of which 21.19 MiB is free.
Process 1437653 has 6.01 GiB memory in use. Including non-PyTorch memory, this process has 5.24 GiB memory in use.
Of the allocated memory 5.03 GiB is allocated by PyTorch...

Translated:

• Your GPU has ~11.6 GB usable VRAM.
• Only 21 MB is free when SD-WebUI is trying to allocate another 20 MB.
• There’s already a big chunk (6 GB) in use by this process, and even more by something else.

So when A1111 or whatever tries to finish loading the checkpoint / attention layers, boom → OOM → process crashes → Caddy sees upstream die → 500 to client.

This is why:

• OpenWebUI opens (UI itself uses almost no VRAM),
• but model load fails,
• and from another machine you just see “500 internal error” or blank page.

---

2. First sanity check: what’s hogging VRAM?

On ougway, run:

nvidia-smi

You’ll see a table with processes and memory usage.

If you see more than one heavy AI process (e.g., OpenWebUI, A1111, diffusers, some other model server), they’re competing for GPU memory.

Rule of thumb for your card:
You really want only one big model on the GPU at a time, or run the others in CPU/low-VRAM mode.

---

3. Quick “unstick” sequence

A. Kill stuck GPU processes

If you see old/stuck processes in nvidia-smi, you can:

sudo kill -9 <PID>

or, if you want to nuke all Python GPU jobs at once:

sudo pkill -9 python

(Do this only if you’re okay killing any Python-based tools that are running.)

Re-run:

nvidia-smi

and confirm VRAM is mostly free before restarting A1111/OpenWebUI.

---

4. Start SD-WebUI / A1111 in a more VRAM-friendly way

For A1111 (stable-diffusion-webui), use medvram or lowvram, and optionally xformers.

From your A1111 folder:

cd /home/darren/ai/stable-diffusion-webui

# Example: safer VRAM settings
python launch.py --medvram --xformers

If that still OOMs, try:

python launch.py --lowvram --xformers

Also, note this line in your stack trace:

modules/sd_disable_initialization.py

That’s an extension / script that changes how layers are initialized. If memory is really tight, you can temporarily disable that extension:

• In the extensions folder, find anything related to sd_disable_initialization and move it out or disable it in the WebUI,
• Then restart A1111.

Fewer hacks/extensions = less VRAM burn.

---

5. Don’t double-load big models

Given that:

• OpenWebUI can host models itself and/or
• A1111 is also loading a full SD model,

you can easily end up with two 5–6 GB models on the same GPU.

Pick one of these approaches:

Option 1 – A1111 only on GPU

• Run A1111 on GPU (launch.py --medvram etc.).
• Configure OpenWebUI to use either:
• a smaller model, or
• CPU, or
• don’t run a model there at all (just use it as UI for other stuff).

Option 2 – OpenWebUI only on GPU

• Run the big model in OpenWebUI.
• Don’t start A1111 at the same time, or run A1111 with --use-cpu or similar if you need it for something smaller.

The main point: only one heavyweight GPU model at a time unless you’re very careful.

---

6. Why external access shows 500 / blank

Caddy is just your HTTPS bouncer.

• Browser (remote) → Caddy (https://ougway.local/...) → backend (A1111/OpenWebUI).
• Backend crashes on OOM → Caddy can’t get a response → returns 500 (or blank page) to the client.

Once you:

1. Free VRAM,
2. Restart the backend with --medvram/--lowvram,
3. Avoid double-loading large models,

…the 500s will disappear, because the backend will actually stay alive.

---

7. Concrete sequence to try right now

On ougway:

# 1. See what's on the GPU
nvidia-smi

# 2. Kill stale GPU-hungry processes if needed
sudo pkill -9 python

# 3. Restart A1111 safely
cd /home/darren/ai/stable-diffusion-webui
python launch.py --medvram --xformers

# 4. Check Caddy is still happy
sudo systemctl status caddy --no-pager -l

Then:

• On ougway, visit: https://ougway.local/a1111
• From another machine, visit: https://ougway.local/a1111

If you can get the A1111 UI up and load a model without OOM, the 500 problem should be gone as well.

---

If you tell me roughly what you want the GPU to be dedicated to (OpenWebUI only, A1111 only, or both in some balance), I can lay out a minimal “profile”:

• which services to auto-start,
• what launch flags to use,
• and how to keep everything reachable via Caddy without stepping on VRAM.

Yeah, that all tracks perfectly: you basically discovered the rule of thumb for your box—

> If you’re doing heavy SD image gen, don’t also try to run a big LLM on the same GPU.

And your observations about 1.5 pruned EMA-only vs the others are exactly what I’d expect: smaller checkpoints = less VRAM pressure = fewer explosions.

Let’s split this into two things:

---

1. Sanity check on your conclusions (VRAM / usage)

You’re reading it right:

• If SD-WebUI is spiking VRAM from ~2.6 GB up to ~6–7 GB while generating,
• And another model (OpenWebUI, diffusers, etc.) is loaded on the GPU at the same time,

…you’re in “very easy to OOM” territory.

So for stable, no-drama operation:

• When you’re doing serious SD work → run SD-WebUI only on the GPU, keep OpenWebUI either:
• not running, or
• running but not using a GPU model (or using a tiny one).
• When you’re doing chat / coding help / etc. via OpenWebUI → you can:
• stop SD-WebUI, or
• run SD-WebUI but don’t load a heavy model there.

You can absolutely juggle both on that card, just not two fat models fully loaded at once.

---

2. After the reboot: how to check OpenWebUI from LAN

Since you’re about to restart anyway, here’s the exact checklist to walk through when it comes back up.

Step 1: Confirm Caddy is up

On ougway:

sudo systemctl status caddy --no-pager -l

You want active (running).
If it’s failed, we look at the error message, but it should be happy now.

Step 2: Confirm OpenWebUI is running on 8080

However you usually start OpenWebUI (service, docker, or python main.py), get it running, then check:

ss -tulnp | grep 8080

You should see something like:

LISTEN ... 127.0.0.1:8080 ... python

And from ougway itself, test:

https://ougway.local

If that loads OpenWebUI → Caddy + TLS + proxy are all good.

Step 3: Test from the remote machine

On the other machine:

1. Try:
   text
https://ougway.local
2. If that fails with a name resolution error, try IP:
   text
https://<ougway-LAN-IP>
   (Your browser will complain because the cert is for ougway.local, but it should still show the page if you click through the warning.)

What should happen:

• If OpenWebUI is up and not crashing → no more 500s.
• If you still get 500 on the remote but it works locally, that usually means:
• the backend crashed again (check nvidia-smi and the OpenWebUI logs), or
• the Caddyfile is pointing to the wrong port.

---

3. If it still acts weird after reboot

If, after reboot, you see any of these:

• https://ougway.local works on ougway but not on the other machine
• remote still gets 500 / blank page
• OpenWebUI doesn’t come up even locally over HTTPS

then grab these three outputs on ougway:

sudo systemctl status caddy --no-pager -l
ss -tulnp | grep 8080
cat /etc/caddy/Caddyfile

Paste them, and I’ll adjust exactly what’s needed so:

• OpenWebUI is reachable at https://ougway.local from any box on your LAN,
• SD-WebUI is reachable at https://ougway.local/a1111 when it’s running,
• and you’re not stepping on your GPU when you don’t mean to.

Gotcha, that helps narrow it down a lot:

• OpenWebUI works:
• http://localhost:8080 on ougway ✅
• http://<LAN-IP>:8080 from another machine ✅
• But https://ougway.local → 500 Internal Error ❌

So: backend is fine, HTTPS proxy is what’s unhappy. That’s squarely in Caddy land.

Let’s do this in two steps:
1) sanity-check Caddy logs,
2) simplify the Caddy config so there’s nothing subtle going wrong.

---

1. Check what Caddy is actually complaining about

On ougway, run:

sudo systemctl status caddy --no-pager -l

Then:

sudo journalctl -u caddy --no-pager | tail -n 40

That second one is the important one — it’ll show what happens when you hit https://ougway.local.

---

2. Use a dead-simple Caddyfile as a test

Right now you have something like:

ougway.local {
    tls /etc/ssl/caddy/ougway.local.pem /etc/ssl/caddy/ougway.local-key.pem
    reverse_proxy http://127.0.0.1:8080
}

Let’s keep the host name, but make the block absolutely minimal and explicit.

Edit the Caddyfile:

sudo nano /etc/caddy/Caddyfile

Change the ougway.local block to exactly this:

ougway.local {
    tls /etc/ssl/caddy/ougway.local.pem /etc/ssl/caddy/ougway.local-key.pem

    reverse_proxy 127.0.0.1:8080
}

Note: no http:// in the proxy line (Caddy figures that out), just a clean upstream.

Save and restart:

sudo systemctl restart caddy
sudo systemctl status caddy --no-pager -l

You want active (running).

---

3. Test the upstream behavior directly (host header check)

Let’s make sure OpenWebUI doesn’t freak out when the Host header is ougway.local.

On ougway, run:

curl -H "Host: ougway.local" http://127.0.0.1:8080

• If you see HTML for OpenWebUI → good, it tolerates that host.
• If you see a 500 here, that means OpenWebUI itself is returning 500 when the host isn’t localhost or <LAN-IP>.

That would explain why Caddy gives 500 even though plain http://localhost:8080 works.

---

4. LAN tests to isolate where it breaks

After restarting Caddy with the minimal config:

1. On ougway itself:
   – Try https://ougway.local in the browser.
2. On the remote machine:
   – Try https://ougway.local
   – If that fails, try https://<LAN-IP>

(Your browser will warn about the cert name mismatch on the IP, but it still shouldn’t be a 500; it should show the same page.)

If:

• https://<LAN-IP> works but https://ougway.local gives 500, we’re dealing with something host-name specific.
• Both give 500, but http://<LAN-IP>:8080 is fine → Caddy’s logs will tell us exactly why.

---

Likely scenarios (so you know what we’re looking for)

Based on what you described, the 500 is probably one of these:

1. OpenWebUI doesn’t like the Host header ougway.local and returns 500.
   – curl -H "Host: ougway.local" http://127.0.0.1:8080 will confirm.
2. Caddy is failing to connect to the upstream for some reason (less likely since direct 127.0.0.1:8080 works).
   – Logs will show something like “dial tcp 127.0.0.1:8080: connect: connection refused”.
3. Some subtle config issue in the Caddyfile (we’re removing that possibility with the bare-bones config above).

---

What I need from you next

After you try the steps:

1. Output of:

bash
sudo systemctl status caddy --no-pager -l
sudo journalctl -u caddy --no-pager | tail -n 40
curl -H "Host: ougway.local" http://127.0.0.1:8080

2. And what you see when you hit:
   – https://ougway.local on ougway,
   – https://ougway.local and https://<LAN-IP> on the remote machine.

Once I see those, I can tell you exactly whether it’s Caddy, DNS/hostname handling, or OpenWebUI being picky — and we’ll tweak the config accordingly.