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mention fix for AppArmor related permission errors 

when docker is installed via snap and can't read minikube certificates from a local user's `.minikube` config folder.
pull/5842/head
Steffen Gransow 2019-11-06 10:32:35 +01:00 committed by GitHub
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site/content/en/docs/Tasks/docker_daemon.md
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@ -27,19 +27,23 @@ You should now be able to use docker on the command line on your host mac/linux
docker ps
```
Remember to turn off the _imagePullPolicy:Always_, as otherwise Kubernetes won't use images you built locally.
### Possible errors and solutions
Docker may report following forbidden error if you are using http proxy and the `$(minikube ip)` is not added to `no_proxy`/`NO_PROXY`:
```shell
```
error during connect: Get https://192.168.39.98:2376/v1.39/containers/json: Forbidden
```
On Centos 7, docker may report the following error:
```shell
```
Could not read CA certificate "/etc/docker/ca.pem": open /etc/docker/ca.pem: no such file or directory
```
The fix is to update /etc/sysconfig/docker to ensure that minikube's environment changes are respected:
The fix is to update ``/etc/sysconfig/docker`` to ensure that minikube's environment changes are respected:
```diff
< DOCKER_CERT_PATH=/etc/docker
@ -49,8 +53,27 @@ The fix is to update /etc/sysconfig/docker to ensure that minikube's environment
> fi
```
Remember to turn off the _imagePullPolicy:Always_, as otherwise Kubernetes won't use images you built locally.
When you're using a docker installed via `snap` on a distribution like Ubuntu that uses AppArmor profiles the following error may appear:
```
could not read CA certificate "/home/USERNAME/.minikube/certs/ca.pem": open /home/USERNAME/.minikube/certs/ca.pem: permission denied
```
The solution is to allow docker to read the minikube certificates by adding a line in ``/var/lib/snapd/apparmor/profiles/snap.docker.docker`` file:
```shell
# allow docker to read minikube certificates
owner @{HOME}/.minikube/certs/* r,
```
After that check for syntax errors and try again:
```shell
sudo apparmor_parser -r /var/lib/snapd/apparmor/profiles/snap.docker.docker
eval $(minikube docker-env)
docker ps
```
## Related Documentation
- [docker_registry.md](Using the Docker registry)
- [docker_registry.md](Using the Docker registry)