NVIDIA CDI Hook
The CLI nvidia-cdi-hook
provides container device runtime hook capabilities when
called by a container runtime, as specific in a
Container Device Interface
file.
Generating a CDI
The CDI itself is created for an NVIDIA-capable device using the
nvidia-ctk cdi generate
command.
When nvidia-ctk cdi generate
is run, the CDI specification is generated as a yaml file.
The CDI specification provides instructions for a container runtime to set up devices, files and
other resources for the container prior to starting it. Those instructions
may include executing command-line tools to prepare the filesystem. The execution
of such command-line tools is called a hook.
nvidia-cdi-hook
is the CLI tool that is expected to be called by the container runtime,
when specified by the CDI file.
See the nvidia-ctk
documentation for more information
on generating a CDI file.
Functionality
The nvidia-cdi-hook
CLI provides the following functionality:
chmod
- Change the permissions of a file or directory inside the directory path to be mounted into a container.
create-symlinks
- Create symlinks inside the directory path to be mounted into a container.
update-ldcache
- Update the dynamic linker cache inside the directory path to be mounted into a container.