> ## Documentation Index
> Fetch the complete documentation index at: https://docs.coreweave.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Why is my node drained or cordoned?

A Slurm node enters `drained` state when it stops accepting new jobs. The drain reason (visible in `scontrol show node` or through the `sn`, `dl`, and `dld` aliases on the login pod) identifies the cause.

For the full drain workflow, the list of common drain reasons (`NHC: [REASON]`, `prolog pre-hook failed`, `scheduler: k8s pod deletion timeout`, `batch job complete failure`, and the `k8s:*` family), the manual undrain procedure, and the `sunk:verify-undrain` automation marker, see [Drain and undrain Slurm nodes](/products/sunk/manage_sunk/drain-and-undrain-nodes).

[Contact CoreWeave support](/support/contact) if a node remains drained for an extended period or if the drain reason is not listed in the canonical doc.

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<Badge stroke shape="pill" color="blue" size="md">[Nodes](/support/sunk/tags/nodes)</Badge><Badge stroke shape="pill" color="blue" size="md">[Server Errors](/support/sunk/tags/server-errors)</Badge>