Fixing SELinux Permission Denied Errors in Docker Container Volume Mounts
When binding host paths to containers using flags like -v /host/path:/container/path, Security-Enhanced Linux (SELinux) will block access by default to enforce access controls.
To resolve permission issues, append the appropriate SELinux volume flag to your volume declarations in your docker-compose.yml:
:z- Relabels the volume content so that it is shared across multiple containers.:Z- Relabels the volume content as private and unshared, restricting access strictly to a single container.
Example Configuration
1
2
3
4
5
6
version: '3.8'
services:
app:
image: my-app-image
volumes:
- ./data:/app/data:z