Amazon Web Services has a special AWS Hero program for people, who made a significant contribution to the AWS community. Suddenly, I was nominated there and announced in June in the AWS Container Hero category. Mainly, because of this blog and AWS/Kubernetes/EKS posts. And by the way – I’m the very first AWS Hero… Read More »
Let’s proceed with our journey with Istio. Previous parts: Istio: an overview and running Service Mesh in Kubernetes Istio: external AWS Application LoadBalancer and Istio Ingress Gateway Besides Istio, in this post, we will also configure ExternalDNS, see the Kubernetes: update AWS Route53 DNS from an Ingress for details. Everything described below is a kind… Read More »
On our AWS Elastic Kubernetes Service Dev cluster, we got a couple of namespaees hanging i nthe Termination state. “401 Unauthorized”, response: “Unauthorized” Remembering a similar issue where the root cause was the metrics-server (see the Kubernetes: namespace hangs in Terminating and metrics-server non-obviousness post for details), the first thing I did was to check… Read More »
In the previous post, Istio: an overview and running Service Mesh in Kubernetes, we started Istion io AWS Elastic Kubernetes Service and got an overview of its main components. The next task is to add an AWS Application Load Balancer (ALB) before Istio Ingress Gateway because Istio Gateway Service with its default type LoadBalancer creates… Read More »
Currently, I’m actively working on our AWS infrastructure costs optimization and will post a series of posts about this. The first one will be about AWS RDS Reserved Instances. The idea is quite simple: you are committing to use some types of instances for one or three years. Here, you’ll be able to choose to… Read More »
Istio is a Service Mesh solution that allows performing Service Discovery, Load Balancing, traffic control, canary rollouts and blue-green deployments, traffic monitoring between microservices. We will use Istio in our AWS Elastic Kubernetes Service for traffic monitoring, as an API Gateway service, for traffic policies, and for various deployment strategies. In this post, will speak… Read More »
We have an ExternalDNS service running, see the Kubernetes: update AWS Route53 DNS from an Ingress post, which started sending a lot of messages like: msg=”failed to list resource records sets for zone /hostedzone/Z2VM3W5SRY4I9J: Throttling: \n\tstatus code: 400 And even AWS Console in the Route53 says “Throttling error that was caused because API rate was… Read More »
We have a Kubernetes Cluster Autoscaler for AWS EC2 WorkerNode groups scaling. On our Dev cluster sometimes it stop working with the following message in its logs: [simterm] … E0331 08:57:52.264549 1 leaderelection.go:320] error retrieving resource lock kube-system/cluster-autoscaler: Get https://172.20.0.1:443/apis/coordination.k8s.io/v1/namespaces/kube-system/leases/cluster-autoscaler: context deadline exceeded I0331 08:58:14.468096 1 leaderelection.go:277] failed to renew lease kube-system/cluster-autoscaler: timed out waiting… Read More »
Let’s configure Opsgenie with AWS RDS. The idea is to get notifications from RDS about events and send them to Opsgenie which will send them to our Slack. To do so, we need to configure AWS Simple Notification Service and AWS RDS Event subscriptions. The official documentation is here>>>. Opsgenie confiuration Go to the Integrations… Read More »
One day our developers said that they can not create new AWS LoadBalancers via Ingress on our Kubernetes Dev cluster (AWS EKS). Balancers are created using AWS ALB Controller, see AWS Elastic Kubernetes Service: running ALB Ingress controller. Errors in the controller’s logs were: E0304 07:12:38.595113 1 controller.go:217] kubebuilder/controller “msg”=”Reconciler error” “error”=”no object matching key… Read More »