Tag Archives: AWS

Istio: an overview and running Service Mesh in Kubernetes
0 (0)

11 April 2021

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 »

Loading

Kubernetes: ExternalDNS – records retrieval failed: failed to list hosted zones: Throttling: status code: 400
0 (0)

9 April 2021

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 »

Loading

Opsgenie: integration with AWS RDS and alerting
0 (0)

18 March 2021

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 »

Loading

AWS: InvalidSignatureException: Signature not yet current and Kubernetes AWS ALB Ingress controller
0 (0)

4 March 2021

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 »

Loading

ArgoCD: a Helm chart deployment, and working with Helm Secrets via AWS KMS
0 (0)

22 November 2020

In the previous post ArgoCD: an overview, SSL configuration, and an application deploy we did a quick overview on how to work with the ArgoCD in general, and now let’s try to deploy a Helm chart. The most interesting part of this is how to enable the Helm Secrets. Had some pain with this, but… Read More »

Loading

Kubernetes: Service, load balancing, kube-proxy, and iptables
0 (0)

1 November 2020

One day I wondered – how is load balancing between pods is working in Kubernetes? I.e. – we have an external Load Balancer. Then a Service. And behind it – Pods. What happens when we are receiving a network packet from the world, and we have a few pods – how the traffic will be… Read More »

Loading

Kubernetes: AWS ALB Ingress Controller – add redirect to another domain
0 (0)

9 October 2020

We have an application – an old version, and a new one, and two domains for them. The application is working on AWS Elastic Kubernetes Service, behind an AWS LoadBalancer created with AWS ALB Ingress Controller. The task is to create a redirect from the old domain’s Ingress to a new LoadBalancer: old URL: dev.api.old-example.com… Read More »

Loading

AWS Elastic Kubernetes Service: load-testing and high-load tuning – problems and solutions
0 (0)

4 September 2020

Actually, this post was planned as a short note about using NodeAffinity for Kubernetes Pod: But then, as often happens, after starting writing about one thing, I faced another, and then another one, and as a result – I made this long-read post about Kubernetes load-testing. So, I’ve started about NodeAffinity, but then wondered how… Read More »

Loading

Prometheus: yet-another-cloudwatch-exporter – collecting AWS CloudWatch metrics
0 (0)

23 July 2020

Currently, to collect metrics from the AWS CloudWatch we are using AWS’s own cloudwatch-exporter, see the Prometheus: CloudWatch exporter — сбор метрик из AWS и графики в Grafana post (in Rus), but it has a few gaps: it’s written in Java, so uses CPU/memory of the monitoring host doesn’t scrapes AWS tags from resources uses… Read More »

Loading

AWS Elastic Kubernetes Service: a cluster creation automation, part 2 – Ansible, eksctl
0 (0)

1 May 2020

The first part – AWS Elastic Kubernetes Service: a cluster creation automation, part 1 – CloudFormation. To remind the whole idea is to create an automation process to create an EKS cluster: Ansible uses the cloudformation module to create an infrastructure by using an Outputs of the CloudFormation stack created – Ansible from a template will… Read More »

Loading