Where Can I Get the Listening Ports of CCE Worker Nodes?
Destination Port |
Protocol |
Description |
---|---|---|
10248 |
TCP |
Health check port for kubelet |
10250 |
TCP |
Service port of kubelet to provide monitoring information about workloads on nodes and access channels for containers |
10255 |
TCP |
Read-only port of kubelet to provide monitoring information about workloads on the node |
Dynamic port (related to the range of the host machine, for example, the kernel parameter net.ipv4.ip_local_port_range) |
TCP |
Random port listened by kubelet, which is used to communicate with CRI Shim to obtain the EXEC URL. |
10249 |
TCP |
kube-proxy metric port to provide kube-proxy monitoring information |
10256 |
TCP |
Health check port for kube-proxy |
Dynamic port (32768-65535) |
TCP |
WebSocket listening port for functions such as docker exec |
Dynamic port (32768-65535) |
TCP |
WebSocket listening port for functions such as containerd exec |
28001 |
TCP |
Local listening port of ICAgent to receive syslog logs of the node |
28002 |
TCP |
Health check port for ICAgent |
20101 |
TCP |
Health check port of yangtse-agent/canal-agent (involved when the container tunnel network model is used) |
20104 |
TCP |
Metric port of yangtse-agent/canal-agent to provide component monitoring information (involved when the container tunnel network model is used) |
3125 |
TCP |
Health check listening port of everest-csi-driver |
3126 |
TCP |
everest-csi-driver pprof port |
19900 |
TCP |
Server port for the health check of node-problem-detector |
19901 |
TCP |
Port for connecting node-problem-detector to Prometheus to collect monitoring data |
4789 |
UDP |
OVS listening port, which is used to transmit VXLAN packets in container networking (involved when the container tunnel network model is used) |
4789 |
UDPv6 |
OVS listening port, which is used to transmit VXLAN packets in container networking (involved when the container tunnel network model is used) |
Dynamic port (30000-32767) |
TCP |
Listening port of kube-proxy for layer-4 load balancing. Kubernetes allocates a random port to NodePort and Loadbalancer Services. The default port number ranges from 30000 to 32767. |
Dynamic port (30000-32767) |
UDP |
Listening port of kube-proxy for layer-4 load balancing. Kubernetes allocates a random port to NodePort and Loadbalancer Services. The default port number ranges from 30000 to 32767. |
123 |
UDP |
Listening port of ntpd used for time synchronization |
20202 |
TCP |
Listening port of PodLB for layer-7 load balancing, which forwards container image pull requests. |
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