英文:
Set PortBindings config for ContainerCreate function in golang sdk for docker api
问题
基本上,我需要像这样的东西
docker run -p something:something --name xxxx imagename
在golang sdk中实现(这个sdk是https://docs.docker.com/engine/api/sdks/),用于docker api,我的当前代码如下
exposedPorts, portBindings, _ := nat.ParsePortSpecs([]string{
"127.0.0.1:8080:2368",
})
// 运行ghost容器
createdBody, err := dockerClient.ContainerCreate(context.Background(),
&container.Config{
Image: "ghost:latest",
ExposedPorts: exposedPorts, // 应该是nat.PortSet
},
&container.HostConfig{
PortBindings: portBindings, // 应该是nat.PortMap
},
&network.NetworkingConfig{},
containerName)
我正在使用https://github.com/docker/go-connections/blob/master/nat/nat.go#L126中的ParsePortSpecs函数,它返回(map[Port]struct{}, map[Port][]PortBinding, error),但是失败了,因为container.Config.ExposedPorts是nat.PortSet(实际上是map[Port]struct{}),而container.HostConfig.PortBindings是nat.PortMap
我不确定是否要使用https://github.com/fsouza/go-dockerclient这个客户端,因为我的当前docker API版本是1.25,不支持1.23以上的API版本。
英文:
Basically i need to something like this
docker run -p something:something --name xxxx imagename
in golang sdk (this one https://docs.docker.com/engine/api/sdks/) for docker api, my current code looks like this
exposedPorts, portBindings, _ := nat.ParsePortSpecs([]string{
"127.0.0.1:8080:2368",
})
// Running the ghost container
createdBody, err := dockerClient.ContainerCreate(context.Background(),
&container.Config{
Image: "ghost:latest",
ExposedPorts: exposedPorts,// it supposed to be nat.PortSet
},
&container.HostConfig{
PortBindings: portBindings,// it supposed to be nat.PortMap
},
&network.NetworkingConfig{},
containerName)
I'm using this https://github.com/docker/go-connections/blob/master/nat/nat.go#L126 ParsePortSpecs function which return (map[Port]struct{}, map[Port][]PortBinding, error) but fail since the container.Config.ExposedPorts is nat.PortSet (it's actually map[Port]struct{} tho) and containter.HostConfig.PortBindins is nat.PortMap
I'm not sure if i want to use this client https://github.com/fsouza/go-dockerclient since my current version of docker API is 1.25 and it doesn't support API version above 1.23
答案1
得分: 29
Docker Client Go SDK 可能在一月份以后有所改变,但我刚刚让它工作了,所以我会在这里记录我所做的事情。
如果你需要暴露一个端口,就像在 docker ps
的 PORTS 下看到的 4140/tcp
,你可以按照以下步骤进行操作:
config := &container.Config{
Image: "nginx",
ExposedPorts: nat.PortSet{
"4140/tcp": struct{}{},
},
}
hostConfig := &container.HostConfig{}
ctx := context.Background()
containerResp, err := Docker.ContainerCreate(ctx, config, hostConfig, nil, "")
if err != nil {
panic(err)
}
if err := Docker.ContainerStart(ctx, containerResp.ID, types.ContainerStartOptions{}); err != nil {
panic(err)
}
如果你想将该端口绑定到主机的 0.0.0.0 上,就像在 docker ps
的 PORTS 下看到的 0.0.0.0:4140->4140/tcp
,你需要在 hostConfig 中添加端口绑定:
config := &container.Config{
Image: "nginx",
ExposedPorts: nat.PortSet{
"4140/tcp": struct{}{},
},
}
hostConfig := &container.HostConfig{
PortBindings: nat.PortMap{
"4140/tcp": []nat.PortBinding{
{
HostIP: "0.0.0.0",
HostPort: "4140",
},
},
},
}
ctx := context.Background()
containerResp, err := Docker.ContainerCreate(ctx, config, hostConfig, nil, "")
if err != nil {
panic(err)
}
if err := Docker.ContainerStart(ctx, containerResp.ID, types.ContainerStartOptions{}); err != nil {
panic(err)
}
希望这能为某人节省一些时间
英文:
The Docker Client Go SDK might have changed a bit since Jan, but I just got this working so I'll document what I did here.
If you need a port exposed, which would look like 4140/tcp
under PORTS on docker ps
then you can do the following:
config := &container.Config{
Image: "nginx",
ExposedPorts: nat.PortSet{
"4140/tcp": struct{}{},
},
}
hostConfig := &container.HostConfig{}
ctx := context.Background()
containerResp, err := Docker.ContainerCreate(ctx, config, hostConfig, nil, "")
if err != nil {
panic(err)
}
if err := Docker.ContainerStart(ctx, containerResp.ID, types.ContainerStartOptions{}); err != nil {
panic(err)
}
If you'd like to bind that port to the host on 0.0.0.0, which would look like 0.0.0.0:4140->4140/tcp
under PORTS on docker ps
you need to add in the port bindings to the hostConfig:
config := &container.Config{
Image: "nginx",
ExposedPorts: nat.PortSet{
"4140/tcp": struct{}{},
},
}
hostConfig := &container.HostConfig{
PortBindings: nat.PortMap{
"4140/tcp": []nat.PortBinding{
{
HostIP: "0.0.0.0",
HostPort: "4140",
},
},
},
}
ctx := context.Background()
containerResp, err := Docker.ContainerCreate(ctx, config, hostConfig, nil, "")
if err != nil {
panic(err)
}
if err := Docker.ContainerStart(ctx, containerResp.ID, types.ContainerStartOptions{}); err != nil {
panic(err)
}
Hopefully this'll save somebody some time
答案2
得分: 5
containerCfg := &container.Config {
Image: haproxyImage,
Tty: true,
OpenStdin: true,
AttachStdout: true,
AttachStderr: true,
ExposedPorts: nat.PortSet{
nat.Port("443/tcp"): {},
nat.Port("10001/tcp"): {},
},
}
hostConfig := &container.HostConfig{
Binds: []string{
"/var/run/docker.sock:/var/run/docker.sock",
},
PortBindings: nat.PortMap{
nat.Port("443/tcp"): []nat.PortBinding{{HostIP: "0.0.0.0", HostPort: "443"}},
nat.Port("10001/tcp"): []nat.PortBinding{{HostIP: "0.0.0.0", HostPort: "10001"}},
},
}
英文:
containerCfg := &container.Config {
Image: haproxyImage,
Tty: true,
OpenStdin: true,
AttachStdout: true,
AttachStderr: true,
ExposedPorts: nat.PortSet{
nat.Port("443/tcp"): {},
nat.Port("10001/tcp"): {},
},
}
hostConfig := &container.HostConfig{
Binds: []string{
"/var/run/docker.sock:/var/run/docker.sock",
},
PortBindings: nat.PortMap{
nat.Port("443/tcp"): []nat.PortBinding{{HostIP: "0.0.0.0", HostPort: "443"}},
nat.Port("10001/tcp"): []nat.PortBinding{{HostIP: "0.0.0.0", HostPort: "10001"}},
},
}
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