Diagnostic code

ZBX-E0102

kernel version is unsupported or unknown

Kind

error

Blame

environment

Exit code

2

What it means

zbx needs Linux 5.15 or newer. Overlayfs mounts inside user namespaces arrived in 5.11, and 5.15 is the oldest long-term kernel that has them.

This is also reported when the kernel release cannot be read or is not a version number zbx can parse, because zbx does not guess. The cause says which of the three happened.

Upgrade the kernel, or run zbx on a host with a supported one. Containers share the host's kernel, so inside a container the host's version counts.

Offline

The same text, without a network:

zbx explain E0102