4:25 p.m.
Hey team,
I've got some odd behavior on a podman in Openshift use case I am trying to
figure out. I am trying to run podman in openshift without privilege, extra
capabilities and ideally a custom SELinux label that isn't `spc_t`. I have
managed to adapt the `container_engine_t` type to get past any denials, but
now I'm hitting an issue where the sysfs of the container is read only:
I am running with this yaml:
```
apiVersion: v1
kind: Pod
metadata:
name: no-priv
annotations:
io.kubernetes.cri-o.Devices: "/dev/fuse"
spec:
containers:
- name: no-priv-rootful
image: quay.io/podman/stable
args:
- sleep
- "1000000"
securityContext:
runAsUser: 1000
seLinuxOptions:
type: "container_engine_t"
```
and using a container-selinux based on
https://github.com/haircommander/container-selinux/tree/engine_t-improvem...
when I run this container, and then run podman inside, I get this error:
```
$ oc exec -ti pod/no-priv-rootful -- bash
[podman@no-priv-rootful /]$ podman run ubi8 ls
WARN[0005] Path "/run/secrets/etc-pki-entitlement" from
"/etc/containers/mounts.conf" doesn't exist, skipping
Error: crun: set propagation for `sys`: Permission denied: OCI permission
denied
```
What I find odd, and what is the subject of this email, is that when I
adapt the selinux label to be "spc_t":
```
type: "spc_t"
```
the container runs fine. There are no denials in AVC when I run
`container_engine_t`, but clearly something is different. Can anyone help
me identify what is happening?
Thanks
Peter
--
Peter Hunt, RHCE
They/Them or He/Him
Senior Software Engineer, Openshift
Red Hat <https://www.redhat.com>
<https://www.redhat.com>