I'm looking for resources to help me set up and maintain an on-premises Kubernetes cluster. The official documentation doesn't really cover on-prem deployments, and I'm facing challenges specifically with MetalLB. When I try to apply my `metallb-config.yaml` using `kubectl`, I get an error related to webhooks, suggesting that it can't connect properly. The exact error message is about a context deadline exceeding when trying to call a webhook for validating IP address pools and L2 advertisements. I've made sure that all MetalLB resources are correctly installed. After some troubleshooting, I was able to get MetalLB to start working by deleting the validating webhook configuration, but I still want to know what might be causing these webhook issues. Any guidance would be greatly appreciated!
5 Answers
It sounds like your MetalLB operator might be down. I'd recommend checking its logs to see what's going wrong. You can get the logs by running a command that accesses the pod associated with MetalLB. It could give you more insight on the situation.
Make sure you've got a Container Network Interface (CNI) installed first. Also, let us know if you're working on a single-node or multi-node cluster, as that can affect the setup.
Check out MetalLB's official installation guide and make sure you're using the correct `KubeProxyConfiguration`. If you're using IPVS mode, you might need to adjust some settings in your kube-proxy configuration. Also, verify if IPVS mode is necessary for your setup.
If you're using Calico, ensure that your cluster's network settings are correct. Calico may not be using the default `10.244.0.0/16` network, so you need to specify that when initializing your cluster. Also, consider spinning up a test pod to check DNS resolution and other networking configurations.
The issue could be related to your kube API server not being able to reach the webhook. This is likely a problem with your CNI. You could check if the service is reachable and if there are any network policies that might be blocking it.
Related Questions
How To Get Your Domain Unblocked From Facebook
How To Find A String In a Directory of Files Using Linux