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Last active July 5, 2021 11:36
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Kata Containers host cgroups
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kata_host_cgroup.md

sandbox_cgroup_only = false

Sandbox creation

  • No sandbox cgroup manager is created
  • Cgroup for sandbox container is created
  • Takes linux:cgroup_parent as the cgroup root
  • Creates v1 cgroup hierearchy: /sys/fs/cgroup/memory/vc/<linux:cgroup_parent>/kata_<sandbox_id>/, etc
  • Add the process linked to the sandbox container to the cgroups.
  • Only adds the CPU resources at first

Container addition

  • A new cgroup is created for the container
  • Creates v1 cgroup hierearchy: /sys/fs/cgroup/memory/vc/<linux:cgroup_parent>/kata_<sandbox_id>/, etc
  • Add the process linked to the sandbox container to the cgroups.
  • Only adds the CPU resources at first
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