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Thank you for opening your first issue in this project! Engagement like this is essential for open source projects! 🤗

If you haven't done so already, check out Jupyter's Code of Conduct. Also, please try to follow the issue template as it helps other other community members to contribute more effectively.

You can meet the other Jovyans by joining our Discourse forum. There is also an intro thread there where you can stop by and say Hi! 👋

Welcome to the Jupyter community! 🎉

Z2JH 2 contained some breaking changes regarding the network policy rules, have a look at
https://z2jh.jupyter.org/en/stable/administrator/upgrading/upgrade-1-to-2.html#upgrade-1-2-security-breaking-change

Note that Z2JH 2 is still very old and unsupported, the most recent release is 3.3.7.

Hi there @linlol 👋!

I closed this issue because it was labelled as a support question.

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Z2JH 2 contained some breaking changes regarding the network policy rules, have a look at https://z2jh.jupyter.org/en/stable/administrator/upgrading/upgrade-1-to-2.html#upgrade-1-2-security-breaking-change

Note that Z2JH 2 is still very old and unsupported, the most recent release is 3.3.7.

Thanks @manics, I would check my helm configuration!

btw @manics

Is there any migration guide for z
2jh 2-> 3 (jupyterhub 3->4)? I cannot find similar thing in doc.

Or the change is generally backward compatible except db change

There isn't a migration guide besides the changelog listing what should be considered for z2jh 2 -> 3