Allow not setting initial condition to avoid marking unhealthy nodes …

[eatwithforks]

…as healthy

Fixes #304 and #428

Previously, when a node boots up. NPD sets all the custom plugin conditions to false. This would lead to marking the node as healthy when it is not known yet, because the custom checks have not ran yet. Even worse, when a node is unhealthy and NPD restarts, the node is marked as healthy.

Adding a flag option to not set initial conditions to avoid that behavior.

If this turns out fine, I would also suggest making this the new default in the next major version.

@wangzhen127 @andyxning

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[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: eatwithforks
To complete the pull request process, please assign xueweiz
You can assign the PR to them by writing /assign @xueweiz in a comment when ready.

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[eatwithforks]

I signed it

[eatwithforks]

I signed it

[eatwithforks]

@xueweiz @andyxning @Random-Liu could you take a look when you have the time? I tested this by building it locally to verify that it works. Thank you.

[eatwithforks]

Hi @xueweiz @andyxning @Random-Liu, pinging again in case my last message didn't reach

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Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
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/lifecycle stale

[grosser]

/lifecycle frozen

[wangzhen127]

/ok-to-test

[grosser]

@wangzhen127 all green, good to go ?

[wangzhen127]

Would setting the default condition to empty be working for this case? Like

node-problem-detector/config/network-problem-monitor.json

Line 11 in f42281e

"conditions": [],

[grosser]

Failed to validate custom plugin config

[grosser]

@wangzhen127 so good to go ?

[grosser]

@Random-Liu can you take a look if this PR is good to go ?

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/remove-lifecycle frozen

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/lifecycle stale

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/remove-lifecycle stale

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/lifecycle stale

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/lifecycle rotten

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/close

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@k8s-triage-robot: Closed this PR.

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/close

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