Modified from kubernetes-iperf3 to benchmark kubernetes cluster network performance. Will use iperf to measure network performance with multiple connections from each nodes.
Select a node as iperf server, and all the other nodes in kubernetes cluster will try to connect to server at the same time.
./k8s-iperf <server-node>[Start] iperf server
deployment.apps/iperf-server-deployment created
service/iperf-server created
daemonset.apps/iperf-clients created
Waiting for iperf server to start...
[Start] iperf clients
[Run] iperf-client pod iperf-clients-fffsm
[Run] iperf-client pod iperf-clients-fxnhw
...... done
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
[ 4] local 10.233.66.68 port 5001 connected with 10.233.64.59 port 52912
[ 5] local 10.233.66.68 port 5001 connected with 10.233.65.74 port 52236
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-10.0 sec 2.98 GBytes 2.55 Gbits/sec
[ 5] 0.0-10.0 sec 2.87 GBytes 2.47 Gbits/sec
[Cleanup]
deployment.apps "iperf-server-deployment" deleted
service "iperf-server" deleted
daemonset.apps "iperf-clients" deleted