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2022-12-23：portainer是docker的web可视化工具。如果根据docker部署去写yaml，默认local是k8s，而不是docker，这不符合需求，需要修改yaml。请问部署在 k3s 中，并且默认local是docker，yaml 文件如何写？

答案2022-12-23：

1.portainer在默认情况下用的是k8s环境，所以需要改成docker环境，根据如下代码块一的go代码可知，把”KUBERNETES_SERVICE_HOST”环境变量设置为空，就会把默认环境变成docker环境。

2.根据命令行参数，给–admin-password一个值，你就不需要创建用户了。

3.–admin-password是一个哈希值，根据如下代码块二的go代码可知，需要将密码转成哈希才行。“moonfdd–moonfdd”转换成哈希是”$2a$10$4m4rYwK/TA8GRkyz4UrZ2e8B4GDG8ZhBkyGawJ05q1zJ7zmLywzmW”。

// 代码块一
// api/platform/platform.go

const (
	PodmanMode            = "PODMAN"
	KubernetesServiceHost = "KUBERNETES_SERVICE_HOST"
	NomadJobName          = "NOMAD_JOB_NAME"
)

// DetermineContainerPlatform will check for the existence of the PODMAN_MODE
// or KUBERNETES_SERVICE_HOST environment variable to determine if
// the container is running on Podman or inside the Kubernetes platform.
// Defaults to Docker otherwise.
func DetermineContainerPlatform() (ContainerPlatform, error) {
	podmanModeEnvVar := os.Getenv(PodmanMode)
	if podmanModeEnvVar == "1" {
		return PlatformPodman, nil
	}
	serviceHostKubernetesEnvVar := os.Getenv(KubernetesServiceHost)
	if serviceHostKubernetesEnvVar != "" {
		return PlatformKubernetes, nil
	}
	nomadJobName := os.Getenv(NomadJobName)
	if nomadJobName != "" {
		return PlatformNomad, nil
	}

	if !isRunningInContainer() {
		return "", nil
	}

	dockerCli, err := client.NewClientWithOpts()
	if err != nil {
		return "", errors.WithMessage(err, "failed to create docker client")
	}
	defer dockerCli.Close()

	info, err := dockerCli.Info(context.Background())
	if err != nil {
		if client.IsErrConnectionFailed(err) {
			log.Warn().
				Err(err).
				Msg("failed to retrieve docker info")
			return "", nil
		}

		return "", errors.WithMessage(err, "failed to retrieve docker info")
	}

	if info.Swarm.NodeID == "" {
		return PlatformDockerStandalone, nil
	}

	return PlatformDockerSwarm, nil
}

// 代码块二
// api/cmd/portainer/main.go
	adminPasswordHash := ""
	if *flags.AdminPasswordFile != "" {
		content, err := fileService.GetFileContent(*flags.AdminPasswordFile, "")
		if err != nil {
			log.Fatal().Err(err).Msg("failed getting admin password file")
		}

		adminPasswordHash, err = cryptoService.Hash(strings.TrimSuffix(string(content), "\n"))
		if err != nil {
			log.Fatal().Err(err).Msg("failed hashing admin password")
		}
	} else if *flags.AdminPassword != "" {
		adminPasswordHash = *flags.AdminPassword
	}

yaml如下：

# 用户名：admin
# 密码：moonfdd--moonfdd
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: portainer
  name: portainer
  namespace: moonfdd
spec:
  replicas: 1
  selector:
    matchLabels:
      app: portainer
  template:
    metadata:
      labels:
        app: portainer
    spec:
      containers:
        - env:
            - name: "KUBERNETES_SERVICE_HOST"
              value: ""
          args:
            - "--admin-password"
            - "$2a$10$4m4rYwK/TA8GRkyz4UrZ2e8B4GDG8ZhBkyGawJ05q1zJ7zmLywzmW"
          image: portainer/portainer-ce:alpine
          imagePullPolicy: IfNotPresent
          name: portainer
          securityContext:
            privileged: true
          volumeMounts:
            - mountPath: /var/run/docker.sock
              name: volv
            # - mountPath: /data
            #   name: volv2
      volumes:
        - hostPath:
            path: /var/run/docker.sock
            type: Socket
          name: volv
        # - hostPath:
        #     path: /root/k8s/moonfdd/portainer/data
        #     type: DirectoryOrCreate
        #   name: volv2
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: portainer
  name: portainer
  namespace: moonfdd
spec:
  ports:
    - port: 8000
      protocol: TCP
      targetPort: 8000
      name: 8000-8000
    - port: 9443
      protocol: TCP
      targetPort: 9443
      name: 9443-9443
    - port: 9000
      protocol: TCP
      targetPort: 9000
      name: 9000-9000
  selector:
    app: portainer
  type: NodePort