docker service inspect

Estimated reading time: 3 minutes

Description

Display detailed information on one or more services

Usage

docker service inspect [OPTIONS] SERVICE [SERVICE...]

Options

Name, shorthand Default Description
--format, -f   Format the output using the given Go template
--pretty false Print the information in a human friendly format.

Parent command

Command Description
docker service Manage services
Command Description
docker service create Create a new service
docker service inspect Display detailed information on one or more services
docker service logs Fetch the logs of a service
docker service ls List services
docker service ps List the tasks of one or more services
docker service rm Remove one or more services
docker service scale Scale one or multiple replicated services
docker service update Update a service

Examples

Inspecting 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:3.0.6

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

$ docker service inspect redis
[
    {
        "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:3.0.6"
                },
                "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
        },
        ...
    }
]

Inspect a service using pretty-print

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
ContainerSpec:
 Image:		nginx:alpine
Resources:
Endpoint Mode:  vip
Ports:
 Name =
 Protocol = tcp
 TargetPort = 443
 PublishedPort = 4443

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

Finding the number of tasks running as part of a service

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
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