guestFullName exceeds 128 characters causing vCenter Server disconnects in Cloud Director

[tijmenvandenbrink]

Description

We observed that after upgrading a node to flatcar 3850.1.0 we're hitting this issue. The value that vmware-tools is pulling somehow from the node is like this:

Linux 6.6.16-flatcar Flatcar Container Linux by Kinvolk 3850.1.0 (Oklo) Flatcar Container Linux by Kinvolk 3850.1.0 2024-02-12-1854

which exceeds 128 characters. Previous releases did not include the date stamp at the end.

I understand this is not so much an issue of Flatcar but lies with VMware, however it might affect other Flatcar users.

[tijmenvandenbrink]

Hi, is this something that can be addressed/fixed to the old behaviour before the next release? At this point I'm not sure where this value is pulled from but this has recently changed in the flatcar code I suspect.

[jepio]

There was no change in Flatcar to explain it, so we don't know what to do about it. The best guess is that an update to open-vm-tools changed how this field is synthesized.

flatcar version	open-vm-tools version
3815	12.3.5
3760	12.3.0
3602	12.2.0
3510	12.1.5

[jepio]

Which version worked?