我在部署 .Net Core API 时遇到“CrashLoopBackoff”错误helm upgrade --install flextoeco .：
NAME READY STATUS RESTARTS AGE
flextoecoapi-6bb7cdd846-r6c67 0/1 CrashLoopBackOff 4 (38s ago) 3m8s
flextoecoapi-fb7f7b556-tgbrv 0/1 CrashLoopBackOff 219 (53s ago) 10h
mssql-depl-86c86b5f44-ldj48 0/1 Pending
我已经运行ks describe pod flextoecoapi-6bb7cdd846-r6c67，部分输出如下：
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal Scheduled 5m4s default-scheduler Successfully assigned default/flextoecoapi-6bb7cdd846-r6c67 to fbcdcesdn02
Normal Pulling 5m3s kubelet Pulling image "golide/flextoeco:1.1.1"
Normal Pulled 4m57s kubelet Successfully pulled image "golide/flextoeco:1.1.1" in 6.2802081s
Normal Killing 4m34s kubelet Container flextoeco failed liveness probe, will be restarted
Normal Created 4m33s (x2 over 4m57s) kubelet Created container flextoeco
Normal Started 4m33s (x2 over 4m56s) kubelet Started container flextoeco
Normal Pulled 4m33s kubelet Container image "golide/flextoeco:1.1.1" already present on machine
Warning Unhealthy 4m14s (x12 over 4m56s) kubelet Readiness probe failed: Get "http://10.244.6.59:80/": dial tcp 10.244.0.59:80: connect: connection refused
Warning Unhealthy 4m14s (x5 over 4m54s) kubelet Liveness probe failed: Get "http://10.244.6.59:80/": dial tcp 10.244.0.59:80: connect: connection refused
Warning BackOff 3s (x10 over 2m33s) kubelet Back-off restarting failed container
从这里的建议来看，我似乎有很多选项可以修复最值得注意的问题：i）向 Dockerfile 添加一个命令，以确保有一些前台进程正在运行 ii）扩展 LivenessProbe initialDelaySeconds
我选择了第一个并编辑了我的 Dockerfile，如下所示：
FROM mcr.microsoft.com/dotnet/core/sdk:3.1 AS build-env
WORKDIR /app
# Copy csproj and restore as distinct layers
COPY *.csproj ./
RUN dotnet restore
# Copy everything else and build
COPY . ./
RUN dotnet publish -c Release -o out
# Build runtime image
FROM mcr.microsoft.com/dotnet/aspnet:3.1
WORKDIR /app
ENV ASPNETCORE_URLS http://+:5000
COPY --from=build-env /app/out .
ENTRYPOINT ["dotnet", "FlexToEcocash.dll"]
CMD tail -f /dev/null
进行此更改后，我仍然遇到相同的错误。
更新
跳过：当我不使用 helm 时，部署工作完美，即我可以为部署/服务/nodeport/clusterip 执行 kubectl 申请，并且 API 部署没有问题。
我尝试如下更新 values.yaml 和 service.yaml，但重新部署后 CrashLoopBackOff 错误仍然存在：
模板/service.yaml
apiVersion: v1
kind: Service
metadata:
name: {{ include "flextoeco.fullname" . }}
labels:
{{- include "flextoeco.labels" . | nindent 4 }}
spec:
type: {{ .Values.service.type }}
ports:
- port: {{ .Values.service.port }}
targetPort: http
protocol: TCP
name: http
selector:
{{- include "flextoeco.selectorLabels" . | nindent 4 }}
values.yaml
我在这里明确指定了 CPU 和内存使用情况
replicaCount: 1
image:
repository: golide/flextoeco
pullPolicy: IfNotPresent
# Overrides the image tag whose default is the chart appVersion.
tag: "1.1.2"
imagePullSecrets: []
nameOverride: ""
fullnameOverride: ""
serviceAccount:
podAnnotations: {}
podSecurityContext: {}
# fsGroup: 2000
securityContext: {}
service:
type: ClusterIP
port: 80
ingress:
enabled: false
className: ""
annotations: {}
# kubernetes.io/ingress.class: nginx
# kubernetes.io/tls-acme: "true"
hosts:
- host: flextoeco.local
paths:
- path: /
pathType: ImplementationSpecific
tls: []
# - secretName: chart-example-tls
# hosts:
# - chart-example.local
resources:
limits:
cpu: 1
memory: 1Gi
requests:
cpu: 100m
memory: 250Mi
autoscaling:
enabled: false
minReplicas: 1
maxReplicas: 100
targetCPUUtilizationPercentage: 80
# targetMemoryUtilizationPercentage: 80
nodeSelector: {}
模板/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: {{ include "flextoeco.fullname" . }}
labels:
{{- include "flextoeco.labels" . | nindent 4 }}
spec:
{{- if not .Values.autoscaling.enabled }}
replicas: {{ .Values.replicaCount }}
{{- end }}
selector:
matchLabels:
{{- include "flextoeco.selectorLabels" . | nindent 6 }}
template:
metadata:
{{- with .Values.podAnnotations }}
annotations:
{{- toYaml . | nindent 8 }}
{{- end }}
labels:
{{- include "flextoeco.selectorLabels" . | nindent 8 }}
spec:
{{- with .Values.imagePullSecrets }}
imagePullSecrets:
{{- toYaml . | nindent 8 }}
{{- end }}
serviceAccountName: {{ include "flextoeco.serviceAccountName" . }}
securityContext:
{{- toYaml .Values.podSecurityContext | nindent 8 }}
containers:
- name: {{ .Chart.Name }}
securityContext:
{{- toYaml .Values.securityContext | nindent 12 }}
image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
imagePullPolicy: {{ .Values.image.pullPolicy }}
ports:
- name: http
labels:
{{- include "flextoeco.selectorLabels" . | nindent 8 }}
spec:
{{- with .Values.imagePullSecrets }}
imagePullSecrets:
{{- toYaml . | nindent 8 }}
{{- end }}
serviceAccountName: {{ include "flextoeco.serviceAccountName" . }}
securityContext:
{{- toYaml .Values.podSecurityContext | nindent 8 }}
containers:
- name: {{ .Chart.Name }}
securityContext:
{{- toYaml .Values.securityContext | nindent 12 }}
image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
imagePullPolicy: {{ .Values.image.pullPolicy }}
ports:
- name: http
containerPort: 80
protocol: TCP
livenessProbe:
tcpSocket:
port: 8085
initialDelaySeconds: 300
periodSeconds: 30
timeoutSeconds: 20
readinessProbe:
tcpSocket:
port: 8085
initialDelaySeconds: 300
periodSeconds: 30
resources:
{{- toYaml .Values.resources | nindent 12 }}
{{- with .Values.nodeSelector }}
nodeSelector:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.affinity }}
affinity:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.tolerations }}
{{- toYaml . | nindent 8 }}
{{- end }}