如何检查 Docker 是否在 Windows 上运行？

Question

我想知道如何通过命令行（cmd 或 powershell）检查 Docker 是否在 Windows 上运行。

虽然，我发现了几篇文章指出了解决方案，但它们适用于 Linux 环境：

如何检查docker是否正在运行

如何检查docker守护进程是否正在运行？

我无法得到 Windows 系统的答案。

Answer 1

尝试在 Powershell 或 cmd 上运行这些命令中的任何一个，如果安装了 docker，您应该得到无错误响应：

docker --version
或
docker-compose --version
或
docker ps

Answer 2

Afford two methods:

1. docker version

   This method works both for cmd & powershell, but if for cmd, you need to use echo %errorlevel% to check the result.

   If docker daemon is running, it will be like next:

   PS C:\> docker version
   Client: Docker Engine - Community
   Version:           18.09.2
   API version:       1.39
   Go version:        go1.10.8
   Git commit:        6247962
   Built:             Sun Feb 10 04:12:31 2019
   OS/Arch:           windows/amd64
   Experimental:      false
   
   Server: Docker Engine - Community
    Engine:
     Version:          18.09.2
     API version:      1.39 (minimum version 1.12)
     Go version:       go1.10.6
     Git commit:       6247962
     Built:            Sun Feb 10 04:13:06 2019
     OS/Arch:          linux/amd64
     Experimental:     false
   PS C:\> echo $?
   True
   

   If docker daemon not running, it will be next:

   PS C:\> docker version
   Client: Docker Engine - Community
   Version:           18.09.2
   API version:       1.39
   Go version:        go1.10.8
   Git commit:        6247962
   Built:             Sun Feb 10 04:12:31 2019
   OS/Arch:           windows/amd64
   Experimental:      false
   Error response from daemon: An invalid argument was supplied.
   PS C:\> echo $?
   False
   

2. Get-Process:

   This method just works for powershell.

   If docker daemon is running, it will be next:

   PS C:\> Get-Process 'com.docker.proxy'
   Handles  NPM(K)    PM(K)      WS(K)     CPU(s)     Id  SI ProcessName
   -------  ------    -----      -----     ------     --  -- -----------
       205      10    11416      18860       0.13  12620   2 com.docker.proxy
   PS C:\> echo $?
   True
   

   If docker daemon is not running, it will be next:

   PS C:\> Get-Process 'com.docker.proxy'
   Get-Process : Cannot find a process with the name "com.docker.proxy". Verify the process name and call the cmdlet
   again.
   At line:1 char:1
   + Get-Process 'com.docker.proxy'
   + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
       + CategoryInfo          : ObjectNotFound: (com.docker.proxy:String) [Get-Process], ProcessCommandException
       + FullyQualifiedErrorId : NoProcessFoundForGivenName,Microsoft.PowerShell.Commands.GetProcessCommand
   
   PS C:\> echo $?
   False
   

Answer 3

码头工人信息

• 检查 Docker 是否正在运行的独立于操作系统的方法是使用 docker info 命令询问 Docker。此选项适用于 Windows 和 Linux 发行版。
• 如果 Docker 正在运行，那么你会得到如下所示的结果，否则你会得到一条错误消息：

C:\Users\himanshu.agrawal>docker info
Client:
 Debug Mode: false
 Plugins:
  scan: Docker Scan (Docker Inc., v0.3.4)

Server:
 Containers: 1
  Running: 0
  Paused: 0
  Stopped: 1
 Images: 2
 Server Version: 19.03.13
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Native Overlay Diff: true
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 8fba4e9a7d01810a393d5d25a3621dc101981175
 runc version: dc9208a3303feef5b3839f4323d9beb36df0a9dd
 init version: fec3683
 Security Options:
  seccomp
   Profile: default
 Kernel Version: 5.4.39-linuxkit
 Operating System: Docker Desktop
 OSType: linux
 Architecture: x86_64
 CPUs: 2
 Total Memory: 1.915GiB
 Name: docker-desktop
 ID: HHIB:HQRB:7VBA:LBUY:HKVJ:LFZ3:FSWZ:4ARP:74ZB:TIWO:WTMG:LHZH
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Live Restore Enabled: false
 Product License: Community Engine

获取进程'com.docker.proxy'

• 此选项只能与 Windows Power Shell 一起使用（仅 Power Shell，甚至不能与 CMD 一起使用）。如果 Docker 正在运行，您将得到如下输出，否则您将收到错误消息：

PS C:\Users\himanshu.agrawal> Get-Process 'com.docker.proxy'

Handles  NPM(K)    PM(K)      WS(K)     CPU(s)     Id  SI ProcessName
-------  ------    -----      -----     ------     --  -- -----------
    178      15    22984      25172       0.77  14224   1 com.docker.proxy

其他选项 - Linux 特定

• 您还可以使用操作系统实用程序，例如sudo systemctl is-active docker或sudo status docker或sudo service docker status，或使用 Windows 实用程序检查服务状态。
• ps最后，您可以使用或 等命令检查“dockerd”进程的进程列表top。

来源1