docker service inspect

Description	Display detailed information on one or more services
Usage	`docker service inspect [OPTIONS] SERVICE [SERVICE...]`

Swarm This command works with the Swarm orchestrator.

Description

Inspects the specified service.

By default, this renders all results in a JSON array. If a format is specified, the given template will be executed for each result.

Go's text/template package describes all the details of the format.

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 in the documentation.

Options

Option	Default	Description
`-f, --format`		Format output using a custom template: 'json': Print in JSON format 'TEMPLATE': Print output using the given Go template. Refer to https://docs.docker.com/go/formatting/ for more information about formatting output with templates
`--pretty`		Print the information in a human friendly format

Examples

Inspect a service by name or ID

You can inspect a service, either by its name, or ID

For example, given the following service;

$ docker service ls
ID            NAME   MODE        REPLICAS  IMAGE
dmu1ept4cxcf  redis  replicated  3/3       redis:7.4.1

Both docker service inspect redis, and docker service inspect dmu1ept4cxcf produce the same result:

$ docker service inspect redis

The output is in JSON format, for example:

[
  {
    "ID": "dmu1ept4cxcfe8k8lhtux3ro3",
    "Version": {
      "Index": 12
    },
    "CreatedAt": "2016-06-17T18:44:02.558012087Z",
    "UpdatedAt": "2016-06-17T18:44:02.558012087Z",
    "Spec": {
      "Name": "redis",
      "TaskTemplate": {
        "ContainerSpec": {
          "Image": "redis:7.4.1"
        },
        "Resources": {
          "Limits": {},
          "Reservations": {}
        },
        "RestartPolicy": {
          "Condition": "any",
          "MaxAttempts": 0
        },
        "Placement": {}
      },
      "Mode": {
        "Replicated": {
          "Replicas": 1
        }
      },
      "UpdateConfig": {},
      "EndpointSpec": {
        "Mode": "vip"
      }
    },
    "Endpoint": {
      "Spec": {}
    }
  }
]

$ docker service inspect dmu1ept4cxcf

[
  {
    "ID": "dmu1ept4cxcfe8k8lhtux3ro3",
    "Version": {
      "Index": 12
    },
    ...
  }
]

Formatting (--pretty)

You can print the inspect output in a human-readable format instead of the default JSON output, by using the --pretty option:

$ docker service inspect --pretty frontend

ID:     c8wgl7q4ndfd52ni6qftkvnnp
Name:   frontend
Labels:
 - org.example.projectname=demo-app
Service Mode:   REPLICATED
 Replicas:      5
Placement:
UpdateConfig:
 Parallelism:   0
 On failure:    pause
 Max failure ratio: 0
ContainerSpec:
 Image:     nginx:alpine
Resources:
Networks:   net1
Endpoint Mode:  vip
Ports:
 PublishedPort = 4443
  Protocol = tcp
  TargetPort = 443
  PublishMode = ingress

You can also use --format pretty for the same effect.

You can use the --format option to obtain specific information about a The --format option can be used to obtain specific information about a service. For example, the following command outputs the number of replicas of the "redis" service.

$ docker service inspect --format='{{.Spec.Mode.Replicated.Replicas}}' redis

10