jailer

The jailer

A Firecracker release comes with two binaries - the firecracker and the jailer programs. The jailer brings even more isolation options to Firecracker by creating and securing a unique execution environment for each VMM. what can it do check the uniqueness and validity of the VMM id, maximum length of 64 characters, alphanumeric only assign NUMA node check the existence of the exec_file run the VMM as a specific user / group assign cgroups assign the VMM into a dedicated network namespace a VMM can be damonized what does it do This part comes from the jailer documentation1.
Read more