# Watchdog App cannot find the watchdog on Raspberry Pi 4 B, which has a watchdog

**URL:** https://forum.yunohost.org/t/watchdog-app-cannot-find-the-watchdog-on-raspberry-pi-4-b-which-has-a-watchdog/35367
**Category:** Support apps
**Tags:** \_others, english
**Created:** [February 12, 2025, 1:34am UTC](https://forum.yunohost.org/t/watchdog-app-cannot-find-the-watchdog-on-raspberry-pi-4-b-which-has-a-watchdog/35367 "2025-02-12T01:34:24Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![p\_7](https://forum.yunohost.org/letter_avatar_proxy/v4/letter/p/c68b51/32.png) [@p\_7](https://forum.yunohost.org/u/p_7)
#### Post date: [February 12, 2025, 1:34am UTC](https://forum.yunohost.org/t/watchdog-app-cannot-find-the-watchdog-on-raspberry-pi-4-b-which-has-a-watchdog/35367/1 "2025-02-12T01:34:24Z")

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**What type of hardware are you using** : Raspberry Pi 3, 4+  
**What YunoHost version are you running** : 12.0.11 (stable)  
**What app is this about** : Watchdog

### Describe your issue

I recently got Yunohost up and running, and installed some apps like SearxNG and unattended-upgrades.

I tried to install Watchdog, so that if the system hangs, it will automatically reboot. I doublechecked that the Raspberry Pi 4 B has a hardware watchdog, and in fact `sudo wdctl` gives me information about it:

```auto
$ sudo wdctl
Device: /dev/watchdog0
Identity: Broadcom BCM2835 Watchdog timer [version 0]
Timeout: 15 seconds
Timeleft: 14 seconds
Pre-timeout: 0 seconds
FLAG DESCRIPTION STATUS BOOT-STATUS
KEEPALIVEPING Keep alive ping reply 1 0
MAGICCLOSE Supports magic close char 0 0
SETTIMEOUT Set timeout (in seconds) 0 0

```

However, when I try to install the Watchdog app on Yunohost, it fails with the error, “Your server doesn’t seem to have a ‘/dev/watchdog’ device, this certainly means that it has no hardware watchdog device.” See below for the full watchdog install logs.

If it is relevant, I am also using Tailscale, and followed this procedure to get it up and running: [Tailscale only Yunohost - possible? how to configure? - #6 by roukydesbois](https://forum.yunohost.org/t/tailscale-only-yunohost-possible-how-to-configure/23812/6)

It seems like the problem may be that the Watchdog looks for /dev/watchdog, but on my system it is /dev/watchdog0 ?

### Share relevant logs or error messages

Watchdog: [https://paste.yunohost.org/raw/mozexexiza](https://paste.yunohost.org/raw/mozexexiza)  
Diagnosis: [https://paste.yunohost.org/raw/oqayobecop](https://paste.yunohost.org/raw/oqayobecop)

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<div class="post-metadata">

### Author: ![system](https://forum.yunohost.org/uploads/default/original/2X/f/f59fe8e3ee6b100b4f574d30d6e30479c68b89f0.png) [@system](https://forum.yunohost.org/u/system)
#### Post date: [February 27, 2025, 1:34am UTC](https://forum.yunohost.org/t/watchdog-app-cannot-find-the-watchdog-on-raspberry-pi-4-b-which-has-a-watchdog/35367/2 "2025-02-27T01:34:49Z")

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