cloud-provider-aws
amazon-eks-ami
cloud-provider-aws | amazon-eks-ami | |
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2 | 19 | |
357 | 2,354 | |
0.8% | 0.9% | |
8.7 | 9.2 | |
1 day ago | 6 days ago | |
Go | Shell | |
Apache License 2.0 | MIT No Attribution |
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cloud-provider-aws
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k3s on AWS,does it make sense?
You can install the pod identity webhook and AWS cloud provider, csi provider etc on a bare kube cluster and get pretty close to the EKS experience. Not something I’d do for prod, but interesting as a learning exercise.
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Blazing fast Kubernetes scaling with ASG warm pools
The most naïve way of implementing support for warm pools is to do nothing more than creating the warm pool. Unfortunately, this would start kubelet, which will register the Node with the cluster. Since the AWS cloud provider does not remove instances in stopped state, the control plane marks the Node NotReady, but keep it around in case it comes back up.
amazon-eks-ami
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[Request for opinion] : CPU limits in the K8s world
Careful assuming system reserved will be present. Last I checked, AWS EKS does not have system reserved resources for the kubelet by default and as a result, pods can starve those for resources (e.g., https://github.com/awslabs/amazon-eks-ami/issues/79). This is of course more important for memory, but could impact CPU as well.
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Compile Linux Kernel 6.x on AL2? 😎
For example, this is available for AL2: https://github.com/awslabs/amazon-eks-ami
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Hands-on lab for studying the EKS, which scenarios I should learn?
I found this document that lists the pod limits per node size. I suspect you will want to consider larger worker nodes or you will very quickly be unable to schedule additional workloads.
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k3s on AWS,does it make sense?
source
- EKS Worker Nodes on RHEL 8?
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Five Rookie Mistakes with Kubernetes on AWS. Which were yours?
Issue 1 is a known issue due to memory reservation being to low, see e.g. https://github.com/awslabs/amazon-eks-ami/issues/1145
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EKS: Shoudnt nodes autoscaling group take pods limit into consideration?
No, the new node is added if there are not enough resiurces to start a new pod. So if you have many pods with small resource usage you can hit the pod per node limit, on eks you have a max number of pods depending on the instance type - https://github.com/awslabs/amazon-eks-ami/blob/master/files/eni-max-pods.txt You can incerase that limit : https://docs.aws.amazon.com/eks/latest/userguide/cni-increase-ip-addresses.html
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Blog: KWOK: Kubernetes WithOut Kubelet
# of pods are essentially capped by the worker node choice.
below excerpt from: https://github.com/awslabs/amazon-eks-ami/blob/master/files/...
# Mapping is calculated from AWS EC2 API using the following formula:
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Tips on working with EKS
See also: EKS nodes lose readiness when containers exhaust memory
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Best managed kubernetes platform
So it manifests itself in this way: your pod is scheduled but remains pending forever. You check the logs and you see that it's complaining that the an IP address. Ultimately, if you check here, you see the maximum number of pods that can be scheduled on any underlying ec2 instance, even if you have remaining IPs in your subnet. I found this to be one of the most poorly understood phenomena in EKS. Even those who claimed to "crack" it and wrote fancy blog posts about it fundamentally got it wrong. AFAIK this document reflects the official AWS guide on how to mitigate this.
What are some alternatives?
calico - Cloud native networking and network security
amazon-eks-pod-identity-webhook - Amazon EKS Pod Identity Webhook
amazon-vpc-cni-k8s - Networking plugin repository for pod networking in Kubernetes using Elastic Network Interfaces on AWS
prometheus - The Prometheus monitoring system and time series database.
envoy - Cloud-native high-performance edge/middle/service proxy
skopeo - Work with remote images registries - retrieving information, images, signing content
Grafana - The open and composable observability and data visualization platform. Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Postgres and many more.
distroless - 🥑 Language focused docker images, minus the operating system.
Visual Studio Code - Visual Studio Code
terraform-provision-gke-cloudflare
JaCoCo - :microscope: Java Code Coverage Library
kubelet - kubelet component configs