Networking probes

[aojea]

Talked with @danwinship offline, it will be nice to be able to report

• Pod network problems
• DNS cluster problems
• Services problems

It should not be hard to provide some basic plugins that provide some basic checks, if we can figure out the best way to obtain the information needed

[aojea]

/cc @danwinship
/assign @aojea

[googs1025]

We currently have some pods such as cni network plug-ins, and we also want to detect its health status.

We now use custom plugins to detect whether a specific pod is alive. Perhaps HealthChecker should also support monitoring the status of a specific pod for inspection. 🤔

[aojea]

pods such as cni network plug-ins

why current Pod Probes are not valid?

[googs1025]

Using pod probe can let us know whether the pod is alive, but it does not seem to convert to node condition. Because we have a custom daemonset program, we want when daemonset agents are crashed, they will not be scheduled to this node. If this feature is not provided, we need to implement similar features ourselves.

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