Load Balance
Before you begin
Install Kmesh
Because this function needs to be tested in kernel-native mode, we need to modify the startup parameters:
In chapter of
quickstart Change Kmesh Start Mode, we should modify deploy/charts/kmesh-helm/values.yaml, change --mode=dual-engine to --mode=kernel-native.
Deploy the Sample Applications
[root@master kmesh]# kubectl apply -f samples/sleep/sleep.yaml -n tcp-echo-test
[root@master kmesh]# kubectl apply -f samples/tcp-echo/tcp-echo-services.yaml -n tcp-echo-test
[root@master kmesh]# kubectl apply -f samples/tcp-echo/tcp-echo-virtualservice.yaml -n tcp-echo-test
Apply weight-based Load Balance
-
Let Kmesh manage the traffic of pods
[root@master test]# kubectl label ns default istio.io/dataplane-moda=Kmesh -
Confirm that the
tcp-echoservice is up and running by sending some TCP traffic.##get tcp-echo service address [root@master test]# kuebctl get svc | grep tcp- tcp-echo ClusterIP 10.96.128.249 <none> 9000/TCP,9001/TCP 43h [root@master test]# for i in {1..20}; do kubectl exec sleep-78ff5975c6-cm8hd -c sleep -- sh -c "(date; sleep 1) | nc 10.96.128.249:9000;" done two Sat Jul 6 08:46:45 UTC 2024 two Sat Jul 6 08:46:46 UTC 2024 one Sat Jul 6 08:46:47 UTC 2024 one Sat Jul 6 08:46:48 UTC 2024 two Sat Jul 6 08:46:49 UTC 2024 two Sat Jul 6 08:46:51 UTC 2024 two Sat Jul 6 08:46:52 UTC 2024 one Sat Jul 6 08:46:53 UTC 2024 two Sat Jul 6 08:46:54 UTC 2024 two Sat Jul 6 08:46:55 UTC 2024 one Sat Jul 6 08:46:56 UTC 2024 one Sat Jul 6 08:46:57 UTC 2024 two Sat Jul 6 08:46:58 UTC 2024 one Sat Jul 6 08:47:00 UTC 2024 two Sat Jul 6 08:47:01 UTC 2024 one Sat Jul 6 08:47:02 UTC 2024 two Sat Jul 6 08:47:03 UTC 2024 one Sat Jul 6 08:47:04 UTC 2024 one Sat Jul 6 08:47:05 UTC 2024 two Sat Jul 6 08:47:06 UTC 2024
Dump the configuration information
[root@master kmesh]# ./kmeshctl dump kmesh-5f4fm kernel-native
After dump the configuration , we can see that the strategy is load balancing.
{
"name": "outbound|9001||tcp-echo.default.svc.cluster.local",
"connectTimeout": 10,
"lbPolicy": "LEAST_REQUEST",
"loadAssignment": {
"clusterName": "outbound|9001||tcp-echo.default.svc.cluster.local",
"endpoints": [
{
"lbEndpoints": [
{
"address": {
"port": 10531,
"ipv4": 469890058
}
},
{
"address": {
"port": 10531,
"ipv4": 453112842
}
}
],
"loadBalancingWeight": 2
}
]
},
"circuitBreakers": {
"maxConnections": 4294967295,
"maxPendingRequests": 4294967295,
"maxRequests": 4294967295,
"maxRetries": 4294967295
}
}