File with exec perms is not executable on OpenShift persistent volume on GlusterFS
Issue
When mounting the glusterfs storage to OpenShift's pod, the executable files are not executable due to the selinux policy issues. It will result in 'Permissions Denied' even if the '+x' permissions are set to the file.
# oc rsh pod_mount-1-4rshd
sh-4.2$ ls -lZ /mount/glusterfs/binary
-rwxr-xr-x. 1001 root system_u:object_r:fusefs_t:s0 /mount/glusterfs/binary
sh-4.2$ /mount/glusterfs/binary
sh: /mount/glusterfs/binary: Permission denied
Environment
OpenShift Container Platform 3.3
OpenShift Container Platform 3.4
OpenShift Container Platform 3.5
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