open-nomad/website/source/docs/commands/node-drain.html.md.erb
2017-08-23 17:09:47 +03:00

56 lines
1.3 KiB
Plaintext

---
layout: "docs"
page_title: "Commands: node-drain"
sidebar_current: "docs-commands-node-drain"
description: >
Toggle drain mode for a given node.
---
# Command: node-drain
The `node-drain` command is used to toggle drain mode on a given node. Drain
mode prevents any new tasks from being allocated to the node, and begins
migrating all existing allocations away.
The [node-status](/docs/commands/node-status.html) command compliments this
nicely by providing the current drain status of a given node.
## Usage
```
nomad node-drain [options] <node>
```
A `-self` flag can be used to drain the local node. If this is not supplied, a
node ID or prefix must be provided. If there is an exact match, the drain mode
will be adjusted for that node. Otherwise, a list of matching nodes and
information will be displayed.
It is also required to pass one of `-enable` or `-disable`, depending on which
operation is desired.
## General Options
<%= partial "docs/commands/_general_options" %>
## Node Drain Options
* `-enable`: Enable node drain mode.
* `-disable`: Disable node drain mode.
* `-self`: Drain the local node.
* `-yes`: Automatic yes to prompts.
## Examples
Enable drain mode on node with ID prefix "4d2ba53b":
```
$ nomad node-drain -enable 4d2ba53b
```
Enable drain mode on the local node:
```
$ nomad node-drain -enable -self
```