尝试与Jaeger代理守护进程集对话时，EKS连接被拒绝

Question

我最近将jaeger代理作为守护进程集部署在我的k8s集群上，并与收集器一起部署。尝试使用向代理发送跨度时

- name: JAEGER_AGENT_HOST
valueFrom:
fieldRef:
fieldPath: status.hostIP

当查看应用程序日志时，我看到：

failed to flush Jaeger spans to server: write udp <Pod-Ip>:42531-><Node-Ip>:6831: write: connection refused

所有节点都可以相互访问，因为安全组不会阻止它们之间的端口，当使用sidecar代理时，发送跨度时不会出现问题。

复制：

部署代理使用：

apiVersion: apps/v1
kind: DaemonSet
metadata:
name: jaeger-agent
labels:
app: jaeger
app.kubernetes.io/name: jaeger
app.kubernetes.io/component: agent
namespace: observability
spec:
selector:
matchLabels:
app: jaeger
app.kubernetes.io/name: jaeger
app.kubernetes.io/component: agent
template:
metadata:
labels:
app: jaeger
app.kubernetes.io/name: jaeger
app.kubernetes.io/component: agent
spec:
containers:
- name: jaeger-agent
image: jaegertracing/jaeger-agent:1.18.0
args: ["--reporter.grpc.host-port=<collector-name>:14250"]
ports:
- containerPort: 5775
protocol: UDP
- containerPort: 6831
protocol: UDP
- containerPort: 6832
protocol: UDP
- containerPort: 5778
protocol: TCP

然后部署热棒应用程序：

apiVersion: apps/v1
kind: Deployment
metadata:
name: hotrod
labels:
app: hotrod
version: v1
spec:
replicas: 1
selector:
matchLabels:
app: hotrod
template:
metadata:
labels:
app: hotrod
spec:
containers:
- name: hotrod
image: jaegertracing/example-hotrod:latest
imagePullPolicy: Always
env:
- name: JAEGER_AGENT_HOST
valueFrom:
fieldRef:
fieldPath: status.hostIP
ports:
- containerPort: 8080

Answer 1

看起来您的DaemonSet错过了hostNetwork属性，从而能够侦听节点IP。您可以查看该文章以了解更多信息：https://medium.com/@masroor.hasan/tracing-基础设施-带jaeger-on-kubernetes-6800132a677