MachineHealthcheck controller fails to get cluster connection from cache #12363
Description
What steps did you take and what happened?
I spawned an AWS workload cluster using CAPA v2.8.3 and the following flags set:
--feature-gates=EKS=true,EKSEnableIAM=true,EKSAllowAddRoles=false,EKSFargate=false,MachinePool=false,EventBridgeInstanceState=false,AutoControllerIdentityCreator=true,BootstrapFormatIgnition=false,ExternalResourceGC=falseEvery 15m or so (it depends, sometime it can go up to 20m), I get the following message form the MachineHealthcheck controller:
E0616 07:31:16.533327 1 machinehealthcheck_controller.go:221] "Error creating remote cluster cache" err="error getting client: connection to the workload cluster is down" controller="machinehealthcheck" controllerGroup="cluster.x-k8s.io" controllerKind="MachineHealthCheck" MachineHealthCheck="flux-system/t00-use1-eks-test" namespace="flux-system" name="t00-use1-eks-test" reconcileID="420722f1-5b72-4829-9340-8a9c27537fd4" Cluster="flux-system/t00-use1-eks-test"
E0616 07:31:16.535055 1 machineset_controller.go:1218] "Unable to retrieve Node status" err="error getting client: connection to the workload cluster is down" controller="machineset" controllerGroup="cluster.x-k8s.io" controllerKind="MachineSet" MachineSet="flux-system/t00-use1-eks-test-us-east-1a-md0-f6f27" namespace="flux-system" name="t00-use1-eks-test-us-east-1a-md0-f6f27" reconcileID="4c4135df-6d55-4590-8751-b4af5d8b8982" Cluster="flux-system/t00-use1-eks-test" MachineDeployment="flux-system/t00-use1-eks-test-us-east-1a-md0" Machine="flux-system/t00-use1-eks-test-us-east-1a-md0-f6f27-gpm5b" Node=""
E0616 07:31:16.564003 1 machineset_controller.go:1218] "Unable to retrieve Node status" err="error getting client: connection to the workload cluster is down" controller="machineset" controllerGroup="cluster.x-k8s.io" controllerKind="MachineSet" MachineSet="flux-system/t00-use1-eks-test-us-east-1a-md0-f6f27" namespace="flux-system" name="t00-use1-eks-test-us-east-1a-md0-f6f27" reconcileID="e5a1e000-b16f-4d8a-9c75-6af4c7be8b9f" Cluster="flux-system/t00-use1-eks-test" MachineDeployment="flux-system/t00-use1-eks-test-us-east-1a-md0" Machine="flux-system/t00-use1-eks-test-us-east-1a-md0-f6f27-gpm5b" Node=""
E0616 07:31:16.614978 1 machineset_controller.go:1218] "Unable to retrieve Node status" err="error getting client: connection to the workload cluster is down" controller="machineset" controllerGroup="cluster.x-k8s.io" controllerKind="MachineSet" MachineSet="flux-system/t00-use1-eks-test-us-east-1a-md0-f6f27" namespace="flux-system" name="t00-use1-eks-test-us-east-1a-md0-f6f27" reconcileID="f0952489-d550-40bc-bbe5-fb1bfb72bbd1" Cluster="flux-system/t00-use1-eks-test" MachineDeployment="flux-system/t00-use1-eks-test-us-east-1a-md0" Machine="flux-system/t00-use1-eks-test-us-east-1a-md0-f6f27-gpm5b" Node=""
E0616 07:31:16.628004 1 machineset_controller.go:1218] "Unable to retrieve Node status" err="error getting client: connection to the workload cluster is down" controller="machineset" controllerGroup="cluster.x-k8s.io" controllerKind="MachineSet" MachineSet="flux-system/t00-use1-eks-test-us-east-1a-md0-f6f27" namespace="flux-system" name="t00-use1-eks-test-us-east-1a-md0-f6f27" reconcileID="8c2fd112-b159-438e-9c7e-e2b9ab38191a" Cluster="flux-system/t00-use1-eks-test" MachineDeployment="flux-system/t00-use1-eks-test-us-east-1a-md0" Machine="flux-system/t00-use1-eks-test-us-east-1a-md0-f6f27-gpm5b" Node=""As far as I checked, I don't have any operational impact.
I didn't have this error using v1.7.9, it seems to appear starting v1.8.0.
What did you expect to happen?
If this is a real error with token renewal logic or the updated cache component, then try to fix it.
If it's not, suppress the message.
Cluster API version
v1.9.8
Kubernetes version
No response
Anything else you would like to add?
I tried to play with sync-period on both capa-controller-manager and capi-controller-manager without any luck.
Label(s) to be applied
/kind bug
One or more /area label. See https://github.com/kubernetes-sigs/cluster-api/labels?q=area for the list of labels.