正在尝试启动 kubernetes service/deployment

Question

我正在尝试在 minikube 中获取服务运行（MetaMap Tagger 服务，medpost-skr）。

我有以下 Docker 文件，它自己运行良好：

FROM openjdk:8-jre

RUN mkdir /usr/share/public_mm
ADD public_mm/MedPost-SKR /usr/share/public_mm/MedPost-SKR
ADD public_mm/bin /usr/share/public_mm/bin
ADD required/scripts /usr/share/public_mm/scripts

ENV PATH=/usr/share/public_mm/bin:$PATH

WORKDIR  /usr/share/public_mm

# --- BUILD ---
RUN  /usr/share/public_mm/bin/install.sh

# --- START ---
CMD skrmedpostctl start

我有以下 service/deployment 文件（在 argo 工作流模板中）来启动服务：

apiVersion: argoproj.io/v1alpha1
kind: Workflow                  #new type of k8s spec
metadata:
  generateName: nlp-adapt-wf-    #name of workflow spec
spec:
  entrypoint: nlp-adapt-metamap-services          #invoke the build template

  templates:

  - name: nlp-adapt-metamap-services
    steps:
    - - name: medpost-deployment
        template: medpost-server-d
    - - name: medpost-service
        template: medpost-server-s

  - name: medpost-server-d
    resource:
      action: create
      manifest: |
        apiVersion: apps/v1
        kind: Deployment
        metadata:
          name: medpost
        spec:
          selector:
            matchLabels:
              app: medpost
              track: stable
          template:
            metadata:
              labels:
                app: medpost
                track: stable

            spec:
              containers:
              - image: ahc-nlpie-docker.artifactory.umn.edu/medpost-skr
                imagePullPolicy: Never
                name: medpost
                ports:
                - containerPort: 1795

  - name: medpost-server-s
    resource:
      action: create
      manifest: |
        apiVersion: v1
        kind: Service
        metadata:
          name: medpost
          namespace: default
          labels:
            app: medpost

        spec:
          selector:
            app: medpost
          ports:
          - name: test1 
            protocol: TCP
            port: 1795
            targetPort: 1795

当我查看服务时，我看到：

（基础）D20181472:medpost-skr gms$ kubectl get svc 名称类型集群 IP 外部 IP 端口年龄 kubernetes ClusterIP 10.96.0.1 443/TCP 60d medpost ClusterIP 10.100.189.245 1795/TCP 26m

当我查看部署时，服务部署似乎从未启动：

(base) D20181472:medpost-skr gms$ kubectl get deploy
NAME      READY   UP-TO-DATE   AVAILABLE   AGE
medpost   0/1     1            0           27m

但是，当我查看 pod 的日志时，服务似乎已启动，但 pod 处于 CrashLoopBackOff 状态：

(base) D20181472:medpost-skr gms$ kubectl get pods
NAME                            READY   STATUS             RESTARTS   AGE
medpost-859844ddf-sw888         0/1     CrashLoopBackOff   10         28m

(base) D20181472:medpost-skr gms$ kubectl logs medpost-859844ddf-sw888
$Starting skrmedpostctl:
started.

这里是关于 pod 的更多信息：

kubectl describe pod medpost-859844ddf-sw888
Name:               medpost-859844ddf-sw888
Namespace:          default
Priority:           0
PriorityClassName:  <none>
Node:               minikube/10.0.2.15
Start Time:         Tue, 02 Apr 2019 14:14:57 -0500
Labels:             app=medpost
                    pod-template-hash=859844ddf
                    track=stable
Annotations:        <none>
Status:             Running
IP:                 172.17.0.7
Controlled By:      ReplicaSet/medpost-859844ddf
Containers:
  medpost:
    Container ID:   docker://208de2cc7c5007b53b63f2a063db13a8df5011488ab0be26726c12de54735043
    Image:          ahc-nlpie-docker.artifactory.umn.edu/medpost-skr
    Image ID:       docker://sha256:89ea83d80cd906319afbdd37805228440048aded93156c0fc17f900d1aa6228b
    Port:           1795/TCP
    Host Port:      0/TCP
    State:          Waiting
      Reason:       CrashLoopBackOff
    Last State:     Terminated
      Reason:       Completed
      Exit Code:    0
      Started:      Tue, 02 Apr 2019 14:41:17 -0500
      Finished:     Tue, 02 Apr 2019 14:41:17 -0500
    Ready:          False
    Restart Count:  10
    Environment:    <none>
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from default-token-mkpqk (ro)
Conditions:
  Type              Status
  Initialized       True
  Ready             False
  ContainersReady   False
  PodScheduled      True
Volumes:
  default-token-mkpqk:
    Type:        Secret (a volume populated by a Secret)
    SecretName:  default-token-mkpqk
    Optional:    false
QoS Class:       BestEffort
Node-Selectors:  <none>
Tolerations:     node.kubernetes.io/not-ready:NoExecute for 300s
                 node.kubernetes.io/unreachable:NoExecute for 300s
Events:
  Type     Reason     Age                   From               Message
  ----     ------     ----                  ----               -------
  Normal   Scheduled  30m                   default-scheduler  Successfully assigned default/medpost-859844ddf-sw888 to minikube
  Normal   Pulled     28m (x5 over 30m)     kubelet, minikube  Container image "ahc-nlpie-docker.artifactory.umn.edu/medpost-skr" already present on machine
  Normal   Created    28m (x5 over 30m)     kubelet, minikube  Created container
  Normal   Started    28m (x5 over 30m)     kubelet, minikube  Started container
  Warning  BackOff    5m6s (x117 over 30m)  kubelet, minikube  Back-off restarting failed container

编辑这是部署：

(base) D20181472:wsd_server gms$ kubectl describe deploy medpost
Name:                   medpost
Namespace:              default
CreationTimestamp:      Tue, 02 Apr 2019 18:03:13 -0500
Labels:                 <none>
Annotations:            deployment.kubernetes.io/revision: 1
Selector:               app=medpost,track=stable
Replicas:               1 desired | 1 updated | 1 total | 0 available | 1 unavailable
StrategyType:           RollingUpdate
MinReadySeconds:        0
RollingUpdateStrategy:  25% max unavailable, 25% max surge
Pod Template:
  Labels:  app=medpost
           track=stable
  Containers:
   medpost:
    Image:        ahc-nlpie-docker.artifactory.umn.edu/medpost-skr
    Port:         1795/TCP
    Host Port:    0/TCP
    Environment:  <none>
    Mounts:       <none>
  Volumes:        <none>
Conditions:
  Type           Status  Reason
  ----           ------  ------
  Available      False   MinimumReplicasUnavailable
  Progressing    True    ReplicaSetUpdated
OldReplicaSets:  <none>
NewReplicaSet:   medpost-859844ddf (1/1 replicas created)
Events:
  Type    Reason             Age   From                   Message
  ----    ------             ----  ----                   -------
  Normal  ScalingReplicaSet  34s   deployment-controller  Scaled up replica set medpost-859844ddf to 1

不知道该怎么做？

Answer 1

问题是这些服务是作为后台进程启动的。在前台启动它们是解决方案。

正在尝试启动 kubernetes service/deployment

Trying to start kubernetes service/deployment

deployment

service

kubernetes

minikube