Docker Configuration

The issue

The Supervisor has some expectations of how the Docker daemon is configured to maintain the stability and performance of the host running the Supervisor.

The logging driver for the Docker daemon needs to be set to journald and the storage driver needs to be set to overlay2.

We only support cgroup version 1 on our hardware handling.

The solution

If you are running an older version of our Home Assistant OS, update it to the latest version in the Configuration panel.

If you are running Home Assistant Supervised, you need to modify the Docker daemon configuration on the host. The configuration is located at /etc/docker/daemon.json. If that file doesn’t exist, you can create it and make sure it at least has the following contents:

    "log-driver": "journald",
    "storage-driver": "overlay2"

When the Docker configuration file is changed and saved, you need to restart the Docker service on the host machine.

To fix issues with the cgroup level, addjust the /etc/default/grub and add systemd.unified_cgroup_hierarchy=false to GRUB_CMDLINE_LINUX_DEFAULT and run sudo update-grub. After this change is made, you need to reboot the host completely.

You can also just re-run our convenience installation script.