我有本地 kubernetes 集群。我已经部署了我的应用程序并公开为 ClusterIP 服务。
apiVersion: apps/v1
kind: Deployment
metadata:
name: myapp
namespace: default
spec:
replicas: 1
selector:
matchLabels:
app: myapp
template:
metadata:
labels:
app: myapp
version: v1
spec:
containers:
- name: myapp
image: myrepo:5000/myapp
imagePullPolicy: Always
ports:
- containerPort: 8088
imagePullSecrets:
- name: regcred
我的服务
apiVersion: v1
kind: Service
metadata:
name: myapp
namespace: default
labels:
app: myapp
spec:
selector:
app: myapp
ports:
- protocol: TCP
port: 8088
targetPort: 8088
apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
name: myapp
spec:
host: myapp
kubectl get svc 给出:
myapp ClusterIP 10.233.41.178 <none> 8088/TCP 13m
我可以使用 ClusterIP 地址 curl 访问我的服务，但是当我尝试 curl http://myapp:8088/api 时，它给出。 (从我的主节点运行)
curl: (7) Failed to connect to myapp port 8088: Connection refused
我使用istio服务网格。我在这里缺少什么？
我尝试过以下线程:
最佳答案
这是正常的。我可以通过 kind 和 1 个 nginx 部署以及一项 clusterIP 类型的服务达到相同的状态。
➜ github_api k get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
dev-my-nginx ClusterIP 10.96.235.85 <none> 80/TCP 3d
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 3d2h
mysql ClusterIP 10.97.143.150 <none> 3306/TCP 2d23h
prod-my-nginx ClusterIP 10.101.89.124 <none> 80/TCP 3d
➜ github_api docker exec -it 212f25f5f073 bash
root@kind-control-plane:/# curl 10.96.235.85
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
body {
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
}
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
root@kind-control-plane:/# curl dev-my-nginx:80
curl: (6) Could not resolve host: dev-my-nginx
root@kind-control-plane:/#
服务名称仅在集群内部解析，因为 coreDNS(很可能)仅在集群内工作。如果您想从每个工作节点访问该服务，请使用 NodePort 类型的服务。
PS。我不是100%确定。将仔细检查是否有其他选项并更新此评论。PS2 你可以这样做:
k port-forward svc/dev-my-nginx :80
然后您可以从端口转发的节点进行curl
关于kubernetes - 无法使用服务名访问kubernetes服务，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/63736606/