ERROR: Rancher must be ran with the –privileged flag when running outside of Kubernetes

According to the document on the official website of rancher 2.4, only one Linux host is required. Remember that a single node rancher server can be quickly deployed. Of course, this can only be used for testing. Deployment is very convenient. Just start dcoker on the host, and then start a container:

sudo docker run -d --restart=unless-stopped -p 80:80 -p 443:443 rancher/rancher

After the test, it is found that the container is constantly restarted after startup, and there is no way to enter the UI, prompting a network error.

CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS                         PORTS               NAMES
bfd5c52a1ce7        rancher/rancher     "entrypoint.sh"     12 hours ago        Restarting (1) 3 seconds ago                       elated_heisenberg

View log:

[[email protected] ~]# docker logs --tail 3 bfd5c52a1ce7
ERROR: Rancher must be ran with the --privileged flag when running outside of Kubernetes
ERROR: Rancher must be ran with the --privileged flag when running outside of Kubernetes
ERROR: Rancher must be ran with the --privileged flag when running outside of Kubernetes

If an error is found, it is said that — privileged is required to increase privileges
turn off the lifting appliance — privileged to try:

docker run -d --restart=unless-stopped --privileged  -p 80:80  -p 443:443 rancher/rancher

Found it

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