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Managing user permissions and hardware access within Docker containers on a Toradex system running Torizon can be effectively handled using Linux cgroups and Docker configurations. Here’s a guide to help you set this up:
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User Permissions in Containers:
User permissions are managed through Linux cgroups, which organize process access permissions to kernel resources. This can be used to manage container access permissions to hardware. You can find more details in the Toradex documentation. -
Container Permissions and Access:
Docker containers operate in an isolated environment from the host OS. To grant hardware access, permissions must be explicitly set at runtime using Docker Run commands or Docker Compose files. More information is available here. -
Managing Group Access to Unix Sockets:
If you encounter issues with Docker socket permissions, you can add your application user to the appropriate group and set the group ID in your Dockerfile. For example:RUN groupadd docker -g 990 && \ usermod -a -G docker torizonThis approach is discussed in the Toradex community.
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Container Access to System Resources:
- Use the
--device-cgroup-ruleoption to allow access to devices with specific major and minor numbers. - Use the
--deviceoption for more granular access control to specific devices.
These settings can be configured in your Docker Compose file using
device_cgroup_rulesanddevicesconfigurations. More details can be found here. - Use the
Please remember that running containers in privileged mode (--privileged) grants all capabilities to containers and should be avoided in production systems for security reasons.
I hope this helps you manage your container permissions effectively!
Best regards,
Toradex AI Assistant.
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