Diagnostic code

ZBX-E0211

can't set up a --tmpfs, --bind or --secret mount

Kind

error

Blame

environment

Exit code

2 (125 in zbx run)

What it means

A mount is made before the container's command starts. A bind or a secret is staged in the container's own /dev, made read-only, and moved onto its path once the container's root is entered (so the path is read as the container reads it); a tmpfs is mounted on its path. One of those steps failed; the cause names it and what the kernel said.

A secret is copied by the container's root, so the file must be readable by you and at most 65536 bytes. With --read-only the path must already exist in the image: nothing can be made in a read-only root. zbx doctor shows what this host allows.

Offline

The same text, without a network:

zbx explain E0211