Hello, I reinstalled my Raspberry Pi 4 today with the latest DietPi firmware because I was having problems with Portainer after the last updates. Now I’ve discovered that a clean installation produces the same error. When I enter IPaddress.local:9002/, I see the dashboard (after login) and my envoirement, which shows “Up.” But when I try to access it, the icon changes from “Up” to “Down,” and I see an error in the upper right corner: “Failed loading environment. The environment named local is unreachable.” Several users on GitHub are also reporting this problem. Is there already a solution, or what can I do?
Reference?
Solution found here in the forum
This is unrelated to DietPi. It’s Portainer using an old Docker API
Hello,
Here is a discussion about this issue :
thx for sharing @vincentcw
Here the official announcement with all possible workarounds:
This is an issue of portainer itself and not related to the operating system
You mean Portainer in Docker v29.0.4.
Btw, Portainer 2.33.5 was just released, which fixes the issue:
They did not fix it as elegantly as Traefik, which did it with automatic client-server API version negotiation. Portainer just raised the static API version:
Hence everyone can now update their Portainer image and remove the workaround.
Shouldn’t
dietpi-software reinstall 185
also update Portainer to 2.33.5?
For me it doesn’t.
It stays on 2.33.2.
Yes it should. Can you paste the output of the dietpi-software run? Maybe we need to define @latest tag explicitly.
root@mini14:~# dietpi-software reinstall 185
[ OK ] DietPi-Software | Initialised database
[ OK ] DietPi-Software | Reading database
DietPi-Software
─────────────────────────────────────────────────────
Mode: Automated reinstall
[ OK ] DietPi-Software | Reinstalling Portainer: Simplifies container management in Docker (standalone host)
[ OK ] DietPi-Software | DietPi-Userdata validation: /mnt/dietpi_userdata
DietPi-Software
─────────────────────────────────────────────────────
Step: Checking for conflicts and missing inputs
DietPi-Software
─────────────────────────────────────────────────────
Step: Checking for prerequisite software
[ INFO ] DietPi-Software | Docker will be reinstalled
[ OK ] DietPi-Software | mkdir -p /mnt/dietpi_userdata/Music /mnt/dietpi_userdata/Pictures /mnt/dietpi_userdata/Video /mnt/dietpi_userdata/downloads /var/www /opt /usr/local/bin
[ OK ] DietPi-Software | chown dietpi:dietpi /mnt/dietpi_userdata/Music /mnt/dietpi_userdata/Pictures /mnt/dietpi_userdata/Video /mnt/dietpi_userdata/downloads
[ OK ] DietPi-Software | chmod 0775 /mnt/dietpi_userdata/Music /mnt/dietpi_userdata/Pictures /mnt/dietpi_userdata/Video /mnt/dietpi_userdata/downloads
[ SUB1 ] DietPi-Services > stop
[ OK ] DietPi-Services | stop : cron
[ OK ] DietPi-Services | stop : docker
[ OK ] DietPi-Services | stop : home-assistant
[ OK ] DietPi-Services | stop : filebrowser
[ OK ] DietPi-Services | stop : jellyfin
[ OK ] DietPi-Services | stop : lighttpd
[ OK ] DietPi-Services | stop : php8.2-fpm
[ OK ] DietPi-Services | stop : mariadb
[ OK ] DietPi-Services | stop : redis-server
[ INFO ] DietPi-Software | Skipping APT update, as last call was less than an hour ago and neither sources lists nor architectures changed since.
DietPi-Software
─────────────────────────────────────────────────────
Step: Installing Docker: Build, ship, and run distributed applications
[ OK ] DietPi-Software | Checking URL: https://download.docker.com/linux/debian/gpg
[ OK ] DietPi-Software | eval curl -sSfL 'https://download.docker.com/linux/debian/gpg' | gpg --dearmor -o /etc/apt/trusted.gpg.d/dietpi-docker.gpg --yes
[ OK ] DietPi-Software | eval echo 'deb https://download.docker.com/linux/debian bookworm stable' > /etc/apt/sources.list.d/docker.list
[ INFO ] DietPi-Software | APT update, please wait...
Hit:2 https://download.docker.com/linux/debian bookworm InRelease
Hit:1 https://linux-packages.resilio.com/resilio-sync/deb resilio-sync InRelease
Hit:3 https://dietpi.com/apt bookworm InRelease
Hit:4 https://deb.debian.org/debian bookworm InRelease
Hit:5 https://deb.debian.org/debian bookworm-updates InRelease
Hit:6 https://deb.debian.org/debian-security bookworm-security InRelease
Hit:7 https://deb.debian.org/debian bookworm-backports InRelease
Get:8 https://repo.jellyfin.org/debian bookworm InRelease [10.6 kB]
Fetched 10.6 kB in 2s (4984 B/s)
Reading package lists...
[ OK ] DietPi-Software | APT update
[ OK ] DietPi-Software | systemctl mask --now docker
[ INFO ] DietPi-Software | APT install docker-ce, please wait...
Reading package lists...
Building dependency tree...
Reading state information...
docker-ce is already the newest version (5:29.1.0-1~debian.12~bookworm).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
[ OK ] DietPi-Software | APT install docker-ce
[ OK ] DietPi-Software | systemctl unmask docker
[ OK ] DietPi-Software | systemctl start docker.socket
[ OK ] DietPi-Software | mkdir -p /lib/systemd/system/docker.service.d
[ OK ] DietPi-Software | eval echo -e '[Service]\nType=simple' > /lib/systemd/system/docker.service.d/dietpi-simple.conf
[ OK ] DietPi-Software | mkdir -p /mnt/dietpi_userdata/docker-data
[ OK ] DietPi-Software | Current setting in /etc/docker/daemon.json will be preserved: "data-root": "/mnt/dietpi_userdata/docker-data",
[ OK ] DietPi-Software | Current setting in /etc/docker/daemon.json will be preserved: "log-driver": "journald",
[ OK ] DietPi-Software | Current setting in /etc/docker/daemon.json will be preserved: "log-level": "warn",
[ OK ] DietPi-Software | Current setting in /etc/docker/daemon.json will be preserved: "debug": false
[ OK ] DietPi-Software | Desired setting in /etc/containerd/config.toml was already set: [debug]
[ OK ] DietPi-Software | Current setting in /etc/containerd/config.toml will be preserved: level = "warn"
[ OK ] DietPi-Software | update-alternatives --set iptables /usr/sbin/iptables-nft
[ OK ] DietPi-Software | update-alternatives --set ip6tables /usr/sbin/ip6tables-nft
DietPi-Software
─────────────────────────────────────────────────────
Step: Installing Portainer: Simplifies container management in Docker (standalone host)
[ OK ] DietPi-Software | docker container rm -f 530404f0bf9e
WARNING: This output is designed for human readability. For machine-readable output, please use --format.
[ INFO ] DietPi-Software | Portainer will be deployed now. This could take a while...
[ INFO ] DietPi-Software | docker run -d -p 9002:9000 -p 9442:9443 --name=portainer --restart=always -v /run/docker.sock:/var/run/docker.sock -v /etc/ssl/certs/ca-certificates.crt:/etc/ssl/certs/ca-certificates.crt:ro -v portainer_data:/data portainer/portainer-ce, please wait...
021bd91a8b05c9de0584ecb6011a897235cf11c7003381d01508ab3fd29ad6b9
[ OK ] DietPi-Software | docker run -d -p 9002:9000 -p 9442:9443 --name=portainer --restart=always -v /run/docker.sock:/var/run/docker.sock -v /etc/ssl/certs/ca-certificates.crt:/etc/ssl/certs/ca-certificates.crt:ro -v portainer_data:/data portainer/portainer-ce
DietPi-Software
─────────────────────────────────────────────────────
Step: Finalising install
[ INFO ] DietPi-Software | Enabling installed services
[ OK ] DietPi-Software | systemctl --no-reload enable docker
[ OK ] DietPi-Software | systemctl daemon-reload
2025-11-27 19:07:31 [ INFO ] DietPi-RAMlog | Storing /var/log to /var/tmp/dietpi/logs/dietpi-ramlog_store...
2025-11-27 19:07:31 [ OK ] DietPi-RAMlog | Stored /var/log to /var/tmp/dietpi/logs/dietpi-ramlog_store.
DietPi-Software
─────────────────────────────────────────────────────
Step: Install completed
[ OK ] DietPi-Survey | Sending survey data
[ SUB1 ] DietPi-Services > restart
[ OK ] DietPi-Services | restart : redis-server
[ OK ] DietPi-Services | restart : mariadb
[ OK ] DietPi-Services | restart : php8.2-fpm
[ OK ] DietPi-Services | restart : lighttpd
[ OK ] DietPi-Services | restart : jellyfin
[ OK ] DietPi-Services | restart : filebrowser
[ OK ] DietPi-Services | restart : home-assistant
[ OK ] DietPi-Services | restart : docker
[ OK ] DietPi-Services | restart : cron
It doesn’t remove the image at all.
Can share
docker container ls
docker image ls
root@mini14:~# docker container ls
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
021bd91a8b05 portainer/portainer-ce "/portainer" 43 minutes ago Up 43 minutes 8000/tcp, 0.0.0.0:9002->9000/tcp, [::]:9002->9000/tcp, 0.0.0.0:9442->9443/tcp, [::]:9442->9443/tcp portainer
f43e7207b7e8 ghcr.io/immich-app/immich-server:release "tini -- /bin/bash -…" 6 weeks ago Up 43 minutes (healthy) 0.0.0.0:2283->2283/tcp, [::]:2283->2283/tcp immich_server
c8526efbcbd0 ghcr.io/immich-app/postgres:14-vectorchord0.4.3-pgvectors0.2.0 "/usr/local/bin/immi…" 6 weeks ago Up 43 minutes (healthy) 5432/tcp immich_postgres
6e8bd04f8b57 ghcr.io/immich-app/immich-machine-learning:release "tini -- python -m i…" 6 weeks ago Up 43 minutes (healthy) immich_machine_learning
2b60c7575456 valkey/valkey:8-bookworm "docker-entrypoint.s…" 4 months ago Up 43 minutes (healthy) 6379/tcp immich_redis
7bf40b2c26d0 ghcr.io/paperless-ngx/paperless-ngx:latest "/init" 4 months ago Up 43 minutes (healthy) 0.0.0.0:8061->8000/tcp, [::]:8061->8000/tcp paperless-webserver-1
17e9f41472d6 postgres:17 "docker-entrypoint.s…" 4 months ago Up 43 minutes 5432/tcp paperless-db-1
2f24e93db879 redis:8 "docker-entrypoint.s…" 4 months ago Up 43 minutes 6379/tcp paperless-broker-1
f5862edfe676 owntone/owntone:latest "/sbin/init" 5 months ago Up 43 minutes (healthy) OwnTone
root@mini14:~# docker image ls
i Info → U In Use
IMAGE ID DISK USAGE CONTENT SIZE EXTRA
ghcr.io/immich-app/immich-machine-learning:release 9007cc2391cf 947MB 0B U
ghcr.io/immich-app/immich-server:release db67b06ea5bb 1.71GB 0B U
ghcr.io/immich-app/postgres:14-vectorchord0.4.3-pgvectors0.2.0 178719aeb38d 756MB 0B U
ghcr.io/paperless-ngx/paperless-ngx:latest 85f4675bb05f 1.37GB 0B U
mongo:6.0 7ba17b94771e 758MB 0B
owntone/owntone:latest 343a13217f25 161MB 0B U
portainer/portainer-ce:latest e6b0d4bc3234 186MB 0B U
postgres:17 445ed93b882f 438MB 0B U
redis:8 f2cd22713a18 128MB 0B U
sanjeet990/astroluma:latest 65760ae92db8 2.11GB 0B
sissbruecker/linkding:latest cccb10946a43 482MB 0B
This command does not work anymore, hence the image is never removed:
docker image ls -a | mawk '/portainer\/portainer(-ce)?( |$)/{print $3;exit}'
Looks like this commit which was meant as enhancement to support Portainer BE upgrades, turned now into a bug fix at the same time: dietpi-software: Portainer: handle BE correctly by MichaIng · Pull Request #7832 · MichaIng/DietPi · GitHub
When I implemented this, the previous command still worked. What changed it:
- The image name is now suffixed with the version/tag.
- The image ID is now 2nd field instead of 3rd
Funnily I implemented exactly what they suggest now, before this warning was even emitted: using the --format option, as well as the --filter/-f one, instead of using mawk 
.
@Pi-Rate try this, the code a reinstall will run next DietPi version:
# Remove existing container and image, including CE, BE, and old v1, and store image repo in variable to preserve BE instances
container=$(docker container ls -aqf 'ancestor=portainer/portainer' -f 'ancestor=portainer/portainer-ce' -f 'ancestor=portainer/portainer-ee')
[[ $container ]] && G_EXEC docker container rm -f "$container"
read -r image repo < <(docker image ls -af 'reference=portainer/portainer' -f 'reference=portainer/portainer-ce' -f 'reference=portainer/portainer-ee' --format '{{.ID}} {{.Repository}}')
[[ $image ]] && G_EXEC docker image rm "$image"
# Create volume if it does not exist yet
[[ $(docker volume ls -qf 'name=^portainer_data$') ]] || G_EXEC docker volume create portainer_data
# Deploy new Portainer container, migrate v1 to CE and preserve BE
[[ $repo == 'portainer/portainer-ee' ]] || repo='portainer/portainer-ce'
G_EXEC_OUTPUT=1 G_EXEC docker run -d -p '9002:9000' -p '9442:9443' --name=portainer --restart=always -v '/run/docker.sock:/var/run/docker.sock' -v '/etc/ssl/certs/ca-certificates.crt:/etc/ssl/certs/ca-certificates.crt:ro' -v 'portainer_data:/data' "$repo"
Fantastic, that did it.
I guess it was the Docker update from 2 hours ago: Release v29.1.0 · moby/moby · GitHub