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For Kata-Containers, we add SandboxService for these new calls alongside
the existing
TaskService, including processing requests and replies, and properly
calling
VirtSandbox's interfaces. By splitting the start logic of the sandbox,
virt_container
is compatible with calls from the SandboxService and TaskService. In
addition, we modify
the processing of resource configuration to solve the problem that
SandboxService does not
have a spec file when creating a pod.
Sandbox api can be supported from containerd 1.7. But there's a
difference from container 2.0.
To enbale it from 2.0, you can support the sandbox api for a specific
runtime by adding:
sandboxer = "shim", take kata runtime as an example:
[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.kata]
runtime_type = "io.containerd.kata.v2"
sandboxer = "shim"
privileged_without_host_devices = true
pod_annotations = ["io.katacontainers.*"]
For container version 1.7, you can enable it by:
1: add env ENABLE_CRI_SANDBOXES=true
2: add sandbox_mode = "shim" to runtime config.
Acknowledgement
This work was based on @wllenyj's POC code:
(f5b62a2d7c)
Signed-off-by: Fupan Li <fupan.lfp@antgroup.com>
Signed-off-by: wllenyj <wllenyj@linux.alibaba.com>