# service ps

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List the tasks of one or more services

### Options

| Name                                   | Type     | Default | Description                                |
|:---------------------------------------|:---------|:--------|:-------------------------------------------|
| [`-f`](#filter), [`--filter`](#filter) | `filter` |         | Filter output based on conditions provided |
| [`--format`](#format)                  | `string` |         | Pretty-print tasks using a Go template     |
| `--no-resolve`                         |          |         | Do not map IDs to Names                    |
| `--no-trunc`                           |          |         | Do not truncate output                     |
| `-q`, `--quiet`                        |          |         | Only display task IDs                      |


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## Description

Lists the tasks that are running as part of the specified services.

> **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

### List the tasks that are part of a service

The following command shows all the tasks that are part of the `redis` service:

```console
$ docker service ps redis

ID             NAME      IMAGE        NODE      DESIRED STATE  CURRENT STATE          ERROR  PORTS
0qihejybwf1x   redis.1   redis:3.0.5  manager1  Running        Running 8 seconds
bk658fpbex0d   redis.2   redis:3.0.5  worker2   Running        Running 9 seconds
5ls5s5fldaqg   redis.3   redis:3.0.5  worker1   Running        Running 9 seconds
8ryt076polmc   redis.4   redis:3.0.5  worker1   Running        Running 9 seconds
1x0v8yomsncd   redis.5   redis:3.0.5  manager1  Running        Running 8 seconds
71v7je3el7rr   redis.6   redis:3.0.5  worker2   Running        Running 9 seconds
4l3zm9b7tfr7   redis.7   redis:3.0.5  worker2   Running        Running 9 seconds
9tfpyixiy2i7   redis.8   redis:3.0.5  worker1   Running        Running 9 seconds
3w1wu13yupln   redis.9   redis:3.0.5  manager1  Running        Running 8 seconds
8eaxrb2fqpbn   redis.10  redis:3.0.5  manager1  Running        Running 8 seconds
```

In addition to _running_ tasks, the output also shows the task history. For
example, after updating the service to use the `redis:3.0.6` image, the output
may look like this:

```console
$ docker service ps redis

ID            NAME         IMAGE        NODE      DESIRED STATE  CURRENT STATE                   ERROR  PORTS
50qe8lfnxaxk  redis.1      redis:3.0.6  manager1  Running        Running 6 seconds ago
ky2re9oz86r9   \_ redis.1  redis:3.0.5  manager1  Shutdown       Shutdown 8 seconds ago
3s46te2nzl4i  redis.2      redis:3.0.6  worker2   Running        Running less than a second ago
nvjljf7rmor4   \_ redis.2  redis:3.0.6  worker2   Shutdown       Rejected 23 seconds ago        "No such image: redis@sha256:6…"
vtiuz2fpc0yb   \_ redis.2  redis:3.0.5  worker2   Shutdown       Shutdown 1 second ago
jnarweeha8x4  redis.3      redis:3.0.6  worker1   Running        Running 3 seconds ago
vs448yca2nz4   \_ redis.3  redis:3.0.5  worker1   Shutdown       Shutdown 4 seconds ago
jf1i992619ir  redis.4      redis:3.0.6  worker1   Running        Running 10 seconds ago
blkttv7zs8ee   \_ redis.4  redis:3.0.5  worker1   Shutdown       Shutdown 11 seconds ago
```

The number of items in the task history is determined by the
`--task-history-limit` option that was set when initializing the swarm. You can
change the task history retention limit using the
[`docker swarm update`](swarm_update.md) command.

When deploying a service, docker resolves the digest for the service's
image, and pins the service to that digest. The digest is not shown by
default, but is printed if `--no-trunc` is used. The `--no-trunc` option
also shows the non-truncated task ID, and error-messages, as can be seen below;

```console
$ docker service ps --no-trunc redis

ID                          NAME         IMAGE                                                                                NODE      DESIRED STATE  CURRENT STATE            ERROR                                                                                           PORTS
50qe8lfnxaxksi9w2a704wkp7   redis.1      redis:3.0.6@sha256:6a692a76c2081888b589e26e6ec835743119fe453d67ecf03df7de5b73d69842  manager1  Running        Running 5 minutes ago
ky2re9oz86r9556i2szb8a8af   \_ redis.1   redis:3.0.5@sha256:f8829e00d95672c48c60f468329d6693c4bdd28d1f057e755f8ba8b40008682e  worker2   Shutdown       Shutdown 5 minutes ago
bk658fpbex0d57cqcwoe3jthu   redis.2      redis:3.0.6@sha256:6a692a76c2081888b589e26e6ec835743119fe453d67ecf03df7de5b73d69842  worker2   Running        Running 5 seconds
nvjljf7rmor4htv7l8rwcx7i7   \_ redis.2   redis:3.0.6@sha256:6a692a76c2081888b589e26e6ec835743119fe453d67ecf03df7de5b73d69842  worker2   Shutdown       Rejected 5 minutes ago   "No such image: redis@sha256:6a692a76c2081888b589e26e6ec835743119fe453d67ecf03df7de5b73d69842"
```

### <a name="filter"></a> Filtering (--filter)

The filtering flag (`-f` or `--filter`) format is a `key=value` pair. If there
is more than one filter, then pass multiple flags (e.g. `--filter "foo=bar" --filter "bif=baz"`).
Multiple filter flags are combined as an `OR` filter. For example,
`-f name=redis.1 -f name=redis.7` returns both `redis.1` and `redis.7` tasks.

The currently supported filters are:

* [id](#id)
* [name](#name)
* [node](#node)
* [desired-state](#desired-state)


#### id

The `id` filter matches on all or a prefix of a task's ID.

```console
$ docker service ps -f "id=8" redis

ID             NAME      IMAGE        NODE      DESIRED STATE  CURRENT STATE      ERROR  PORTS
8ryt076polmc   redis.4   redis:3.0.6  worker1   Running        Running 9 seconds
8eaxrb2fqpbn   redis.10  redis:3.0.6  manager1  Running        Running 8 seconds
```

#### name

The `name` filter matches on task names.

```console
$ docker service ps -f "name=redis.1" redis

ID            NAME     IMAGE        NODE      DESIRED STATE  CURRENT STATE      ERROR  PORTS
qihejybwf1x5  redis.1  redis:3.0.6  manager1  Running        Running 8 seconds
```


#### node

The `node` filter matches on a node name or a node ID.

```console
$ docker service ps -f "node=manager1" redis

ID            NAME      IMAGE        NODE      DESIRED STATE  CURRENT STATE      ERROR  PORTS
0qihejybwf1x  redis.1   redis:3.0.6  manager1  Running        Running 8 seconds
1x0v8yomsncd  redis.5   redis:3.0.6  manager1  Running        Running 8 seconds
3w1wu13yupln  redis.9   redis:3.0.6  manager1  Running        Running 8 seconds
8eaxrb2fqpbn  redis.10  redis:3.0.6  manager1  Running        Running 8 seconds
```

#### desired-state

The `desired-state` filter can take the values `running`, `shutdown`, or `accepted`.

### <a name="format"></a> Format the output (--format)

The formatting options (`--format`) pretty-prints tasks output
using a Go template.

Valid placeholders for the Go template are listed below:

| Placeholder     | Description                                                      |
|-----------------|------------------------------------------------------------------|
| `.ID`           | Task ID                                                          |
| `.Name`         | Task name                                                        |
| `.Image`        | Task image                                                       |
| `.Node`         | Node ID                                                          |
| `.DesiredState` | Desired state of the task (`running`, `shutdown`, or `accepted`) |
| `.CurrentState` | Current state of the task                                        |
| `.Error`        | Error                                                            |
| `.Ports`        | Task published ports                                             |

When using the `--format` option, the `service ps` 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
`Name` and `Image` entries separated by a colon (`:`) for all tasks:

```console
$ docker service ps --format "{{.Name}}: {{.Image}}" top

top.1: busybox
top.2: busybox
top.3: busybox
```

## Related commands

* [service create](service_create.md)
* [service inspect](service_inspect.md)
* [service logs](service_logs.md)
* [service ls](service_ls.md)
* [service rm](service_rm.md)
* [service rollback](service_rollback.md)
* [service scale](service_scale.md)
* [service update](service_update.md)
