Kubernetes Readiness探针失败：拨打tcp 10.244.0.10:5000：connect：连接被拒绝

问题描述 投票：-1回答：1

我有一个如下所述的简单服务和pod，但是就绪探针无法抱怨连接被拒绝

apiVersion: v1
kind: Service
metadata:
  name: keystone-api
spec:
  selector:
    app: keystone
  ports:
    - protocol: TCP
      port: 5000
      targetPort: 5000
      name: public
    - protocol: TCP
      port: 35357
      targetPort: 35357
      name: admin
...
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: keystone
  labels:
    app: keystone
spec:
  replicas: 1
  selector:
    matchLabels:
      app: keystone
  template:
    metadata:
      labels:
        app: keystone
    spec:
      containers:
        - name: keystone
          image: openio/openstack-keystone
          readinessProbe:
            tcpSocket:
              port: 5000
          env:
            - name: OS_IDENTITY_ADMIN_PASSWD
              value: password
            - name: IPADDR
              valueFrom:
                fieldRef:
                  fieldPath: status.podIP
          ports:
            - containerPort: 5000
              name: public
            - containerPort: 35357
              name: admin

错误：

 Normal   Pulled     37m                kubelet, kind-pl  Successfully pulled image "openio/openstack-keystone"
  Normal   Created    37m                kubelet, kind-pl  Created container keystone
  Normal   Started    37m                kubelet, kind-pl  Started container keystone
  Warning  Unhealthy  35m (x8 over 37m)  kubelet, kind-pl  Readiness probe failed: dial tcp 10.244.0.10:5000: connect: connection refused

这是我启动部署和服务的方式kubectl apply -f application.yaml --namespace = heat

我在这里想念什么？服务规格

spec:
  clusterIP: 10.96.162.65
  ports:
  - name: public
    port: 5000
    protocol: TCP
    targetPort: 5000
  - name: admin
    port: 35357
    protocol: TCP
    targetPort: 35357
  selector:
    app: keystone
  sessionAffinity: None
  type: ClusterIP
status:
  loadBalancer: {}

从我的VM：telnet 10.96.162.65 5000尝试10.96.162.65 ...

Kubectl描述pod日志：

Namespace:    heat
Priority:     0
Node:         kind-control-plane/172.17.0.2
Start Time:   Sun, 19 Apr 2020 16:04:36 +0530
Labels:       app=keystone
              pod-template-hash=8587f8dc76
Annotations:  <none>
Status:       Running
IP:           10.244.0.10
IPs:
  IP:           10.244.0.10
Controlled By:  ReplicaSet/keystone-8587f8dc76
Containers:
  keystone:
    Container ID:   containerd://9888e62ac7df3f076bd542591a6413a0ef5b70be2c792bbf06e423b5dae89ca0
    Image:          openio/openstack-keystone
    Image ID:       docker.io/openio/openstack-keystone@sha256:62c8e36046ead4289ca4a6a49774bc589e638f46c0921f40703570ccda47a320
    Ports:          5000/TCP, 35357/TCP
    Host Ports:     0/TCP, 0/TCP
    State:          Running
      Started:      Sun, 19 Apr 2020 16:08:01 +0530
    Ready:          True
    Restart Count:  0
    Readiness:      tcp-socket :5000 delay=0s timeout=1s period=10s #success=1 #failure=3
    Environment:
      OS_IDENTITY_ADMIN_PASSWD:  password
      IPADDR:                     (v1:status.podIP)
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from default-token-wf2bp (ro)
Conditions:
  Type              Status
  Initialized       True 
  Ready             True 
  ContainersReady   True 
  PodScheduled      True 
Volumes:
  default-token-wf2bp:
    Type:        Secret (a volume populated by a Secret)
    SecretName:  default-token-wf2bp
    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:          <none>

## Kubectl log podname logs:

10.244.0.10 - - [19/Apr/2020 11:14:33] "POST /v3/auth/tokens HTTP/1.1" 201 2161
2020-04-19 11:14:33.699 49 INFO keystone.common.wsgi [req-fc64c89f-724c-4838-bc34-3907a8f79041 411ecaea9d3241a88e86355ba22f7a0f 277a0fe02d174c47bae4d67e697be0a7 - default default] GET http://10.244.0.10:35357/v3/services/heat
2020-04-19 11:14:33.705 49 WARNING keystone.common.wsgi [req-fc64c89f-724c-4838-bc34-3907a8f79041 411ecaea9d3241a88e86355ba22f7a0f 277a0fe02d174c47bae4d67e697be0a7 - default default] Could not find service: heat.: ServiceNotFound: Could not find service: heat.
10.244.0.10 - - [19/Apr/2020 11:14:33] "GET /v3/services/heat HTTP/1.1" 404 90
2020-04-19 11:14:33.970 49 INFO keystone.common.wsgi [req-3589e675-8818-4b82-ad7d-c944d9e2a232 411ecaea9d3241a88e86355ba22f7a0f 277a0fe02d174c47bae4d67e697be0a7 - default default] GET http://10.244.0.10:35357/v3/services?name=heat
10.244.0.10 - - [19/Apr/2020 11:14:34] "GET /v3/services?name=heat HTTP/1.1" 200 341
2020-04-19 11:14:34.210 49 INFO keystone.common.wsgi [req-492a3e9f-8892-4204-8ca9-c1465e28e709 411ecaea9d3241a88e86355ba22f7a0f 277a0fe02d174c47bae4d67e697be0a7 - default default] POST http://10.244.0.10:35357/v3/endpoints
10.244.0.10 - - [19/Apr/2020 11:14:34] "POST /v3/endpoints HTTP/1.1" 201 360
10.244.0.10 - - [19/Apr/2020 11:14:38] "GET / HTTP/1.1" 300 267
2020-04-19 11:14:38.089 49 INFO keystone.common.wsgi [req-4c8952b3-7d5b-4ee3-9cf9-f736e1628448 - - - - -] POST http://10.244.0.10:35357/v3/auth/tokens
10.244.0.10 - - [19/Apr/2020 11:14:38] "POST /v3/auth/tokens HTTP/1.1" 201 2367
2020-04-19 11:14:38.737 49 INFO keystone.common.wsgi [req-ebd817f5-d473-4909-b04d-ff0e1d5badab - - - - -] POST http://10.244.0.10:35357/v3/auth/tokens
10.244.0.10 - - [19/Apr/2020 11:14:39] "POST /v3/auth/tokens HTTP/1.1" 201 2367
2020-04-19 11:14:39.635 49 INFO keystone.common.wsgi [req-b68139dc-c62f-4fd7-9cfc-e472a88b9022 411ecaea9d3241a88e86355ba22f7a0f 277a0fe02d174c47bae4d67e697be0a7 - default default] GET http://10.244.0.10:35357/v3/services/heat
2020-04-19 11:14:39.640 49 WARNING keystone.common.wsgi [req-b68139dc-c62f-4fd7-9cfc-e472a88b9022 411ecaea9d3241a88e86355ba22f7a0f 277a0fe02d174c47bae4d67e697be0a7 - default default] Could not find service: heat.: ServiceNotFound: Could not find service: heat.
10.244.0.10 - - [19/Apr/2020 11:14:39] "GET /v3/services/heat HTTP/1.1" 404 90
2020-04-19 11:14:39.814 49 INFO keystone.common.wsgi [req-6562f24f-f032-4150-86d9-951318918871 411ecaea9d3241a88e86355ba22f7a0f 277a0fe02d174c47bae4d67e697be0a7 - default default] GET http://10.244.0.10:35357/v3/services?name=heat
10.244.0.10 - - [19/Apr/2020 11:14:39] "GET /v3/services?name=heat HTTP/1.1" 200 341
2020-04-19 11:14:40.043 49 INFO keystone.common.wsgi [req-6542d767-29bf-4c1a-bbd9-a81a72e106dc 411ecaea9d3241a88e86355ba22f7a0f 277a0fe02d174c47bae4d67e697be0a7 - default default] POST http://10.244.0.10:35357/v3/endpoints
10.244.0.10 - - [19/Apr/2020 11:14:40] "POST /v3/endpoints HTTP/1.1" 201 362
手动创建热服务
[root@keystone-8587f8dc76-rthmn /]# openstack service list                                                          
+----------------------------------+--------------+---------------+
| ID                               | Name         | Type          |
+----------------------------------+--------------+---------------+
| ec5ad9402b3b46599f3f8862e79429b3 | keystone     | identity      |
| 625d8b82a67d472981789f10ba37c381 | openio-swift | object-store  |
| 415b33b5d45c48f6916d38f7b146953a | heat         | orchestration |
+----------------------------------+--------------+---------------+
kubernetes openstack kubernetes-helm kubernetes-pod keystone
1个回答
0
投票
我检查了docker指令，它确实运行了，但是不知何故该应用未正确部署。要检查docker，这很简单，因为他们正在使用主机网络，因此从您的主机可以执行netstat，并且您会看到在端口5000上没有监听。

我访问了该容器并再次运行了初始化脚本（keystone-v3.sh），它开始工作。我在kubernetes Deployment上做了同样的事情，它也起作用。

所以，这是您的功能Deployment：

apiVersion: apps/v1 kind: Deployment metadata: name: keystone labels: app: keystone spec: replicas: 1 selector: matchLabels: app: keystone template: metadata: labels: app: keystone spec: containers: - name: keystone image: openio/openstack-keystone command: ["./keystone-v3.sh"] #<- you add this line readinessProbe: tcpSocket: port: 5000 env: - name: OS_IDENTITY_ADMIN_PASSWD value: password - name: IPADDR valueFrom: fieldRef: fieldPath: status.podIP ports: - containerPort: 5000 name: public - containerPort: 35357 name: admin 

或者您尝试从图像中修复它，但是我想那不是您的存储库吧？
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