我在让大使正常工作方面遇到一些问题。我是Kubernetes的新手，只是自学。
我已经成功地通过大使提供的演示 Material 进行了工作-例如/httpbin/端点运行正常，但是当我尝试部署Go服务时，它就崩溃了。
当点击“qotm”端点时，这是响应页面:
upstream request timeout
pods 状态:
CrashLoopBackOff
根据我的研究，它似乎与yaml文件配置不正确有关，但是我正在努力寻找与此用例有关的任何文档。
我的集群在AWS EKS上运行，并且镜像已推送到AWS ECR。
main.go:
package main
import (
"fmt"
"net/http"
"os"
)
func main() {
var PORT string
if PORT = os.Getenv("PORT"); PORT == "" {
PORT = "3001"
}
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "Hello World from path: %s\n", r.URL.Path)
})
http.ListenAndServe(":" + PORT, nil)
}
Dockerfile:
FROM golang:alpine
ADD ./src /go/src/app
WORKDIR /go/src/app
EXPOSE 3001
ENV PORT=3001
CMD ["go", "run", "main.go"]
test.yaml:
apiVersion: v1
kind: Service
metadata:
name: qotm
annotations:
getambassador.io/config: |
---
apiVersion: ambassador/v1
kind: Mapping
name: qotm_mapping
prefix: /qotm/
service: qotm
spec:
selector:
app: qotm
ports:
- port: 80
name: http-qotm
targetPort: http-api
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: qotm
spec:
replicas: 1
strategy:
type: RollingUpdate
template:
metadata:
labels:
app: qotm
spec:
containers:
- name: qotm
image: ||REMOVED||
ports:
- name: http-api
containerPort: 3001
readinessProbe:
httpGet:
path: /health
port: 5000
initialDelaySeconds: 30
periodSeconds: 3
resources:
limits:
cpu: "0.1"
memory: 100Mi
pods 说明:
Name: qotm-7b9bf4d499-v9nxq
Namespace: default
Priority: 0
PriorityClassName: <none>
Node: ip-192-168-89-69.eu-west-1.compute.internal/192.168.89.69
Start Time: Sun, 17 Mar 2019 17:19:50 +0000
Labels: app=qotm
pod-template-hash=3656908055
Annotations: <none>
Status: Running
IP: 192.168.113.23
Controlled By: ReplicaSet/qotm-7b9bf4d499
Containers:
qotm:
Container ID: docker://5839996e48b252ac61f604d348a98c47c53225712efd503b7c3d7e4c736920c4
Image: IMGURL
Image ID: docker-pullable://IMGURL
Port: 3001/TCP
Host Port: 0/TCP
State: Waiting
Reason: CrashLoopBackOff
Last State: Terminated
Reason: Error
Exit Code: 1
Started: Sun, 17 Mar 2019 17:30:49 +0000
Finished: Sun, 17 Mar 2019 17:30:49 +0000
Ready: False
Restart Count: 7
Limits:
cpu: 100m
memory: 200Mi
Requests:
cpu: 100m
memory: 200Mi
Readiness: http-get http://:3001/health delay=30s timeout=1s period=3s #success=1 #failure=3
Environment: <none>
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from default-token-5bbxw (ro)
Conditions:
Type Status
Initialized True
Ready False
ContainersReady False
PodScheduled True
Volumes:
default-token-5bbxw:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-5bbxw
Optional: false
QoS Class: Guaranteed
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 12m default-scheduler Successfully assigned default/qotm-7b9bf4d499-v9nxq to ip-192-168-89-69.eu-west-1.compute.internal
Normal Pulled 10m (x5 over 12m) kubelet, ip-192-168-89-69.eu-west-1.compute.internal Container image "IMGURL" already present on machine
Normal Created 10m (x5 over 12m) kubelet, ip-192-168-89-69.eu-west-1.compute.internal Created container
Normal Started 10m (x5 over 11m) kubelet, ip-192-168-89-69.eu-west-1.compute.internal Started container
Warning BackOff 115s (x47 over 11m) kubelet, ip-192-168-89-69.eu-west-1.compute.internal Back-off restarting failed container
最佳答案
在您的kubernetes部署文件中，您的应用程序在端口3001上公开了端口5000上的就绪探针，并且在运行容器几次时，我收到了OOMKilled，因此增加了内存限制。无论如何，下面的部署文件应该可以正常工作。
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: qotm
spec:
replicas: 1
strategy:
type: RollingUpdate
template:
metadata:
labels:
app: qotm
spec:
containers:
- name: qotm
image: <YOUR_IMAGE>
imagePullPolicy: Always
ports:
- name: http-api
containerPort: 3001
readinessProbe:
httpGet:
path: /health
port: 3001
initialDelaySeconds: 30
periodSeconds: 3
resources:
limits:
cpu: "0.1"
memory: 200Mi