Question

如何使用Docker api引擎执行容器中的命令。我想使用api docker通过http调用在容器中执行cmds

Answer 1

如果要在容器中执行cmd，则需要输入ID或容器名称，此处的ID与执行docker ps -a所见的ID不同，这里有一个EndPoint在正在运行的容器的json中获取详细信息，即

结果响应如下所示

{
    "Id": "ba7b20038dfe49d326788258eca42acb752405db835e09ffdf2705fdc16b7d17",
    "Names": [
        "/muruga"
    ],
    "Image": "ubuntu",
    "ImageID": "sha256:93fd78260bd1495afb484371928661f63e64be306b7ac48e2d13ce9422dfee26",
    "Command": "/bin/bash",
    "Created": 1544778203,
    "Ports": [],
    "Labels": {},
    "State": "running",
    "Status": "Up 3 seconds",
    "HostConfig": {
        "NetworkMode": "default"
    },
    "NetworkSettings": {
        "Networks": {
            "bridge": {
                "IPAMConfig": null,
                "Links": null,
                "Aliases": null,
                "NetworkID": "6204f5fc4d3689aebe589bd1eab4a94f73a249d69aa88772a800d94f1edc1ea6",
                "EndpointID": "7509759b07f6463b4a0a88baa00a5f6834cf69615ac88bb8bc1dbd8557be7db3",
                "Gateway": "172.17.0.1",
                "IPAddress": "172.17.0.2",
                "IPPrefixLen": 16,
                "IPv6Gateway": "",
                "GlobalIPv6Address": "",
                "GlobalIPv6PrefixLen": 0,
                "MacAddress": "02:42:ac:11:00:02",
                "DriverOpts": null
            }
        }
    },
    "Mounts": []
}

您需要使用运行容器的ID或名称来创建“ exec”实例，即 url ===>发布/容器/ {{id / name}} / exec

`发布数据

 {
"AttachStdin": true,
"AttachStdout": true,
"AttachStderr": true,
"DetachKeys": "ctrl-p,ctrl-q",
"Tty": true,
"Cmd": [
"bin/bash","-c","touch appa.py"
],
"Env": [
"FOO=bar",
"BAZ=quux"
],
"Privileged":true,
"User":"root"
}`

它返回带有json id的响应201，此id在每次exec实例发布完成时都是唯一的，它将返回唯一的id，您需要复制此id并将其传递给另一个url或endpoin

url ===> post / exec / {{id（我在响应中提到的唯一ID）}} / start 发布以下数据

{
  "Detach": true,
  "Tty": false
}

返回200 ok，您可以进入容器并检查命令的执行情况

如何使用Docker api引擎在容器中执行cmd

1 个答案: