I setup a kubernetes by kubeadm and everything is ok. I just get a whim: how do I find out some pods or services dependent on the ports which started by kube-proxy on the localhost ?
[root@k8s-node1 ~]# netstat -tnlp|grep 80
tcp 0 0 172.19.5.38:8080 0.0.0.0:* LISTEN 13918/kube-proxy
tcp 0 0 172.19.5.38:80 0.0.0.0:* LISTEN 13918/kube-proxy I want to know which pod or service the 80 or 8080 belongs to ? assume i already forget which yaml file i submitted to the kubernetes.
thx
You can always describe objects in Kubernetes.
For example if you want to check what ports are using on your services you have to use command below.
$ kubectl get svc -o wide --all-namespaces
NAMESPACE NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE SELECTOR
default kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 3m39s <none>
kube-system kube-dns ClusterIP 10.96.0.10 <none> 53/UDP,53/TCP,9153/TCP 3m38s k8s-app=kube-dnsIf you want to check Ports from deployment you can use kubectl describe deploy <deploymentName> and grep it for context. It will work for Pod also
$ kubectl describe deploy <deploymentName>| grep Port
Port: 80/TCP
Host Port: 0/TCP
In addition, if you dont remember what yaml has been used to create Pod/Deployment you can use edit to check.
$ kubectl edit deployment <deploymentName> -o yamlIt will show YAML file (in VI) which was deployment based on and some additional statuses.
Let me know if this help or if you have any additional questions.