Summary Docker on TrueNAS 25.04.2.4 (Fangtooth) consistently fails to pull images from any container registry with timeout errors. Network connectivity is confirmed working, DNS resolution succeeds, and curl from within Docker’s network namespace can successfully connect to registries. However, Dock…

OMG I FOUND THE FIX! (Well, GPT-5 did guide my hands…) The root cause was that my router blocked TCP/53 DNS queries, which containerd relies on, even though UDP DNS worked fine. Fix: In Network → Global Configuration, setting DNS servers to 1.1.1.1 and 8.8.8.8, then adding these environment variab…

OK, so I’m trying to install an official App and the issue is the same as this forum post : [image] And then: admin@truenas[~]$ sudo cat /var/log/app_lifecycle.log [sudo] password for admin: [2025/10/05 19:15:06] (ERROR) app_lifecycle.compose_action():56 - Failed 'up' action for 'adguard-home' a…

I assume the system is broken because Apps that were installed with 24.04 have not been successfully migrated or deleted. Does this seem like a reasonable supposition? No-one without this migration issue are seeing the same problems. How many Apps do you need to migrate… and do you have a plan f…

This is starting from 0 apps, though maybe there are some corrupted remnants of the k3s ones. I knew that I’ll have to recreate my apps from scratch and I exported the configs from ixVolumes ready to import them back in. I wouldn’t mind working on the apps or even starting form scratch. What I didn…

[image] dain: though maybe there are some corrupted remnants of the k3s ones. It would be useful to understand what apps need to be rebuilt and that you have the data in host path volumes ready for attachment. If this is Ok, you can reset the applications completely and start building apps …

During the migration I lost all my apps (at least as far as the UI is concerned): [image] But these are the ones I’d like to get back: adguard-home filebrowser immich jellyfin metube prowlarr qbittorrent syncthing tailscale I tried unsetting and setting up the app pool just now, but it …

[image] dain: Is there any other way to reset the Apps? I should get a 2nd opinion… The question is what has been corrupted in your system?? Do we need to re-install???

Exactly, these are the questions I’m trying to work out. I guess not using the official migration scripts while they were available is probably not great… But also maybe that I upgraded from Dragonfish to Electric Eel to Fangtooth relatively quickly and maybe some scripts were still running in Elect…

[image] dain: I guess not using the official migration scripts while they were available is probably not great… But also maybe that I upgraded from Dragonfish to Electric Eel to Fangtooth relatively quickly and maybe some scripts were still running in Electric Eel? This feels more like a netw…

I have bog standard network setup with micro PC running TrueNAS plugged in to an ISP router via ethernet cable running behind CGNAT: [image] Networking elsewhere in TrueNAS all works, just sent a test email to myself with Gmail OAuth. Even the new Containers feature works: [image] Curl can re…

[image] DjP-iX: This feels more like a networking issue to me, especially considering we’ve seen users in this forum that have successfully made this transition without this problem both before and after the migration deadline. @dain did validate that the system has reachability to docker hu…

TrueNAS 25.04.2.4 Docker pull timeout after migrating from 24.04 (via 24.10)

TrueNAS General

Stux October 9, 2025, 11:19pm 17

Topic		Replies	Views
UDP DNS lookup blocked on my system after upgrading to 25.1 (from 24.04) TrueNAS General Networking	22	229	September 27, 2026
Average of 70% network packet loss on TrueNAS Scale TrueNAS General SCALE , Networking	19	333	December 27, 2025
Update ix-apps location Apps and Virtualization SCALE , Apps , ZFS	3	1937	September 25, 2024
TrueNAS 26 Beta 1 LXC: Docker real images fail with “failed to register layer: operation not permitted”; /dev/fuse unavailable Apps and Virtualization SCALE	21	486	July 22, 2026
Nginx Proxy Manager suddenlynot working Apps and Virtualization Networking	17	1509	April 28, 2026

TrueNAS 25.04.2.4 Docker pull timeout after migrating from 24.04 (via 24.10)

Related topics