Trying to save a Nomad variable errors with "Invalid name."

[shochdoerfer]

Nomad version

v1.10.2

Operating system and Environment details

Debian Bookworm

Issue

I want to store a large file (250KB) as a Nomad variable.

Clicking on the "Save variables" button returns this error:

Error saving nomad/jobs/my-job
Invalid name. Name must contain only alphanumeric or "-", "_", "~", or "/" characters, and be fewer than 128 characters in length.

Expected Result

The error message is wrong. It's not the name that is invalid, but the value. Show the following or a similar error message instead:

Error saving nomad/jobs/my-job
Invalid value. Value must contain only alphanumeric or "-", "_", "~", or "/" characters, and be fewer than 128 characters in length.

Ideally, showing the character limit also in the "Editing nomad/jobs/my-job" view would be nice.

[Juanadelacuesta]

Hello @shochdoerfer thank you for reporting this problem. We will make sure to fix it and make it more clear.

[tgross]

Noting this error message is only found in the UI. The actual constraints on the server (ref variables.go#L369-L392) are:

1. The path must contain only the characters listed and must be 128 characters or less.
2. The value must be non-empty
3. The value must be no more than 64KiB.

It looks like the UI returns the error we're seeing here on any HTTP400 error. In this case you're almost certainly seeing the error because of (3), as the variable is too large.