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DockerCLI/docs/reference/commandline/node_ls.md

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# node ls
<!---MARKER_GEN_START-->
List nodes in the swarm
### Aliases
`docker node ls`, `docker node list`
### Options
| Name | Type | Default | Description |
|:---------------------------------------|:---------|:--------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [`-f`](#filter), [`--filter`](#filter) | `filter` | | Filter output based on conditions provided |
| [`--format`](#format) | `string` | | Format output using a custom template:<br>'table': Print output in table format with column headers (default)<br>'table TEMPLATE': Print output in table format using the given Go template<br>'json': Print in JSON format<br>'TEMPLATE': Print output using the given Go template.<br>Refer to https://docs.docker.com/go/formatting/ for more information about formatting output with templates |
| `-q`, `--quiet` | `bool` | | Only display IDs |
<!---MARKER_GEN_END-->
## Description
Lists all the nodes that the Docker Swarm manager knows about. You can filter
using the `-f` or `--filter` flag. Refer to the [filtering](#filter) section
for more information about available filter options.
> **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](https://docs.docker.com/engine/swarm/) in the
> documentation.
## Examples
```console
$ docker node ls
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS
1bcef6utixb0l0ca7gxuivsj0 swarm-worker2 Ready Active
38ciaotwjuritcdtn9npbnkuz swarm-worker1 Ready Active
e216jshn25ckzbvmwlnh5jr3g * swarm-manager1 Ready Active Leader
```
> **Note**
>
> In the above example output, there is a hidden column of `.Self` that indicates
> if the node is the same node as the current docker daemon. A `*` (e.g.,
> `e216jshn25ckzbvmwlnh5jr3g *`) means this node is the current docker daemon.
### <a name="filter"></a> Filtering (--filter)
The filtering flag (`-f` or `--filter`) format is of "key=value". If there is more
than one filter, then pass multiple flags (e.g., `--filter "foo=bar" --filter "bif=baz"`)
The currently supported filters are:
* [id](#id)
* [label](#label)
* [node.label](#nodelabel)
* [membership](#membership)
* [name](#name)
* [role](#role)
#### id
The `id` filter matches all or part of a node's id.
```console
$ docker node ls -f id=1
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS
1bcef6utixb0l0ca7gxuivsj0 swarm-worker2 Ready Active
```
#### label
The `label` filter matches nodes based on engine labels and on the presence of a
`label` alone or a `label` and a value. Engine labels are configured in
the [daemon configuration](https://docs.docker.com/reference/cli/dockerd/#daemon-configuration-file). To filter on
Swarm `node` labels, use [`node.label` instead](#nodelabel).
The following filter matches nodes with the `foo` label regardless of its value.
```console
$ docker node ls -f "label=foo"
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS
1bcef6utixb0l0ca7gxuivsj0 swarm-worker2 Ready Active
```
#### node.label
The `node.label` filter matches nodes based on node labels and on the presence
of a `node.label` alone or a `node.label` and a value.
The following filter updates nodes to have a `region` node label:
```console
$ docker node update --label-add region=region-a swarm-test-01
$ docker node update --label-add region=region-a swarm-test-02
$ docker node update --label-add region=region-b swarm-test-03
$ docker node update --label-add region=region-b swarm-test-04
```
Show all nodes that have a `region` node label set:
```console
$ docker node ls --filter node.label=region
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION
yg550ettvsjn6g6t840iaiwgb * swarm-test-01 Ready Active Leader 23.0.3
2lm9w9kbepgvkzkkeyku40e65 swarm-test-02 Ready Active Reachable 23.0.3
hc0pu7ntc7s4uvj4pv7z7pz15 swarm-test-03 Ready Active Reachable 23.0.3
n41b2cijmhifxxvz56vwrs12q swarm-test-04 Ready Active 23.0.3
```
Show all nodes that have a `region` node label, with value `region-a`:
```console
$ docker node ls --filter node.label=region=region-a
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION
yg550ettvsjn6g6t840iaiwgb * swarm-test-01 Ready Active Leader 23.0.3
2lm9w9kbepgvkzkkeyku40e65 swarm-test-02 Ready Active Reachable 23.0.3
```
#### membership
The `membership` filter matches nodes based on the presence of a `membership` and a value
`accepted` or `pending`.
The following filter matches nodes with the `membership` of `accepted`.
```console
$ docker node ls -f "membership=accepted"
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS
1bcef6utixb0l0ca7gxuivsj0 swarm-worker2 Ready Active
38ciaotwjuritcdtn9npbnkuz swarm-worker1 Ready Active
```
#### name
The `name` filter matches on all or part of a node hostname.
The following filter matches the nodes with a name equal to `swarm-master` string.
```console
$ docker node ls -f name=swarm-manager1
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS
e216jshn25ckzbvmwlnh5jr3g * swarm-manager1 Ready Active Leader
```
#### role
The `role` filter matches nodes based on the presence of a `role` and a value `worker` or `manager`.
The following filter matches nodes with the `manager` role.
```console
$ docker node ls -f "role=manager"
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS
e216jshn25ckzbvmwlnh5jr3g * swarm-manager1 Ready Active Leader
```
### <a name="format"></a> Format the output (--format)
The formatting options (`--format`) pretty-prints nodes output
using a Go template.
Valid placeholders for the Go template are listed below:
| Placeholder | Description |
|------------------|-------------------------------------------------------------------------------------------------------|
| `.ID` | Node ID |
| `.Self` | Node of the daemon (`true/false`, `true`indicates that the node is the same as current docker daemon) |
| `.Hostname` | Node hostname |
| `.Status` | Node status |
| `.Availability` | Node availability ("active", "pause", or "drain") |
| `.ManagerStatus` | Manager status of the node |
| `.TLSStatus` | TLS status of the node ("Ready", or "Needs Rotation" has TLS certificate signed by an old CA) |
| `.EngineVersion` | Engine version |
When using the `--format` option, the `node ls` command will either
output the data exactly as the template declares or, when using the
`table` directive, includes column headers as well.
The following example uses a template without headers and outputs the
`ID`, `Hostname`, and `TLS Status` entries separated by a colon (`:`) for all
nodes:
```console
$ docker node ls --format "{{.ID}}: {{.Hostname}} {{.TLSStatus}}"
e216jshn25ckzbvmwlnh5jr3g: swarm-manager1 Ready
35o6tiywb700jesrt3dmllaza: swarm-worker1 Needs Rotation
```
To list all nodes in JSON format, use the `json` directive:
```console
$ docker node ls --format json
{"Availability":"Active","EngineVersion":"23.0.3","Hostname":"docker-desktop","ID":"k8f4w7qtzpj5sqzclcqafw35g","ManagerStatus":"Leader","Self":true,"Status":"Ready","TLSStatus":"Ready"}
```
## Related commands
* [node demote](node_demote.md)
* [node inspect](node_inspect.md)
* [node promote](node_promote.md)
* [node ps](node_ps.md)
* [node rm](node_rm.md)
* [node update](node_update.md)
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