Added Setup-RootlessPodmanLXC HowTo-Linux-AllowHass-PowerCTL

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brammp committed 2026-10-09 22:51:25 +02:00
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Create user automation as system user
Get pub ssh key from hass instance and put here `/home/automation/.ssh/authorized_keys`
/etc/sudoers.d/hass-automation
```
automation ALL=NOPASSWD:/usr/sbin/poweroff
automation ALL=NOPASSWD:/usr/sbin/reboot
```
/etc/polkit-1/rules.d/00-hass.rules
```
polkit.addRule(function(action, subject) {
if (action.id == "org.freedesktop.login1.suspend-multiple-sessions" && subject.user == "automation"){
return polkit.Result.YES;
}
});
polkit.addRule(function(action, subject) {
if (action.id == "org.freedesktop.login1.hibernate-multiple-sessions" && subject.user == "automation"){
return polkit.Result.YES;
}
});
```
/srv/HomeAssistant/data/shellcmd.yaml
```
<SystemName>_stby: "timeout 5s ssh -o ConnectTimeout=3 -o StrictHostKeyChecking=no automation@<ip or hostname> '/usr/bin/dbus-send --system --print-reply --dest=org.freedesktop.login1 /org/freedesktop/login1 'org.freedesktop.login1.Manager.Suspend' boolean:true'"
<SystemName>_off: "timeout 5s ssh -o ConnectTimeout=3 -o StrictHostKeyChecking=no automation@<ip or hostname> 'sudo /usr/sbin/poweroff'"
```
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# Rootless Podman in unpriviliged LXC
add to LXC config
```
lxc.idmap: u 0 100000 200000
lxc.idmap: g 0 100000 200000
lxc.cgroup2.devices.allow: c 10:200 rwm
lxc.mount.entry: /dev/net/tun dev/net/tun none bind,create=file
```
Up the Sub User/Group ID's for root
/etc/subuid
```
root:100000:200000
```
/etc/subgid
```
root:100000:200000
```
# in the LXC
## Podman install
```
newuser=<UserName>
adduser <USERAME>
apt install podman podman-docker podman-compose ca-certificates passt libpam-systemd dbus-user-session catatonit nftables aardvark-dns uidmap
cp /usr/lib/tmpfiles.d/podman.conf /etc/tmpfiles.d/podman.conf
echo 'R! /tmp/storage-run-*/containers/' >> /etc/tmpfiles.d/podman.conf
echo 'R! /tmp/storage-run-*/libpod/tmp/' >> /etc/tmpfiles.d/podman.conf
loginctl enable-linger bram
```
Reboot the LXC
## Admin interface
### Use Cockpit
```
. /etc/os-release
echo "deb http://deb.debian.org/debian ${VERSION_CODENAME}-backports main" > /etc/apt/sources.list.d/backports.list
apt update
apt install -t ${VERSION_CODENAME}-backports cockpit cockpit-podman
```
### Use Dockhand
As the created user
```
systemctl --user --now enable podman.socket
poedman run -d \
--name dockhand \
--restart unless-stopped \
-p 3000:3000 \
-v /run/user/1000/podman/podman.sock:/var/run/docker.sock \
-v dockhand_data:/app/data \
docker.io/fnsys/dockhand:latest
```
### Use as remote for Dockhand (podman socket over IP)
As the created user
```
systemctl --user --now enable podman.socket
```
Edit `/usr/lib/systemd/user/podman.socket` as root
Replace
```
[Socket]
ListenStream=%t/podman/podman.sock
SocketMode=0660
```
with
```
[Socket]
ListenStream=0.0.0.0:2375
```
You can now add the enviroment as direct connection in dockhand