runh

runis a CLI tool for spawning and running RustyHermit containers. To start RustyHermit application within a isolated lightweight virtual machine, a directory with the application and the loader must be created. In this example, the binaries will be downloaded from a docker registry.

$ mkdir data
$ runh pull -b data -u USERNAME -p PASSWORD  registry.git.rwth-aachen.de/acs/public/hermitcore/rusty-hermit/demo

Please note, that is option is only possible, if you have a valid account at the docker registry of the RWTH Aachen University.

In this case, the application an the loader is stored in the subdirectory data.

$ ls data
hermit
$ ls -la data/hermit
drwxr-xr-x 1 stefan stefan     128 May 24 12:27 .
drwxr-xr-x 1 stefan stefan      96 May 24 12:27 ..
-rwxr-xr-x 1 stefan stefan 3651080 May 20 13:53 rusty_demo
-rwxr-xr-x 1 stefan stefan 2225868 May 19 22:50 rusty-loader

An OCI specification file is required to start the hypervisor within an isolated environment. The command spec generate a starter file. Editing of this file is required to achieve desired results. To run rusty_demo, it is required to set the args parameter in the spec to call rusty_demo. This can be done using the sed command or a text editor. The following commands create a bundle for rusty_demo, change the default args parameter in the spec from sh to /hermit/rusty_demo:

$ runh spec -b data
$ sed -i 's;"sh";"/hermit/rusty_demo";' data/config.json

mkroening/runh

runh