mirror of https://github.com/docker/docs.git
104 lines
2.9 KiB
YAML
104 lines
2.9 KiB
YAML
command: docker node update
|
|
short: Update a node
|
|
long: |-
|
|
Update metadata about a node, such as its availability, labels, or roles.
|
|
|
|
> **Note**
|
|
>
|
|
> This is a cluster management command, and must be executed on a swarm
|
|
> manager node. To learn about managers and workers, refer to the
|
|
> [Swarm mode section](/engine/swarm/) in the
|
|
> documentation.
|
|
usage: docker node update [OPTIONS] NODE
|
|
pname: docker node
|
|
plink: docker_node.yaml
|
|
options:
|
|
- option: availability
|
|
value_type: string
|
|
description: Availability of the node (`active`, `pause`, `drain`)
|
|
deprecated: false
|
|
hidden: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: label-add
|
|
value_type: list
|
|
description: Add or update a node label (`key=value`)
|
|
details_url: '#label-add'
|
|
deprecated: false
|
|
hidden: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: label-rm
|
|
value_type: list
|
|
description: Remove a node label if exists
|
|
deprecated: false
|
|
hidden: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: role
|
|
value_type: string
|
|
description: Role of the node (`worker`, `manager`)
|
|
deprecated: false
|
|
hidden: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
inherited_options:
|
|
- option: help
|
|
value_type: bool
|
|
default_value: "false"
|
|
description: Print usage
|
|
deprecated: false
|
|
hidden: true
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
examples: |-
|
|
### Add label metadata to a node (--label-add) {#label-add}
|
|
|
|
Add metadata to a swarm node using node labels. You can specify a node label as
|
|
a key with an empty value:
|
|
|
|
``` bash
|
|
$ docker node update --label-add foo worker1
|
|
```
|
|
|
|
To add multiple labels to a node, pass the `--label-add` flag for each label:
|
|
|
|
```console
|
|
$ docker node update --label-add foo --label-add bar worker1
|
|
```
|
|
|
|
When you [create a service](service_create.md),
|
|
you can use node labels as a constraint. A constraint limits the nodes where the
|
|
scheduler deploys tasks for a service.
|
|
|
|
For example, to add a `type` label to identify nodes where the scheduler should
|
|
deploy message queue service tasks:
|
|
|
|
``` bash
|
|
$ docker node update --label-add type=queue worker1
|
|
```
|
|
|
|
The labels you set for nodes using `docker node update` apply only to the node
|
|
entity within the swarm. Do not confuse them with the docker daemon labels for
|
|
[dockerd](dockerd.md).
|
|
|
|
For more information about labels, refer to [apply custom
|
|
metadata](/engine/userguide/labels-custom-metadata/).
|
|
deprecated: false
|
|
min_api_version: "1.24"
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: true
|
|
|