AWS Lambda allows running a code without the need to create and manage servers, also known as the serverless approach. AWS Lambda will determine how much CPU and memory is needed to run a function, and when it’s necessary it will perform autoscaling. A code to be running is organized in lambda functions and can be… Read More »
Private Hosted Zone in AWS Route53 allows to limit access to DNS records of a domain, thus making it inaccessible for the DNS Enumeration (or DNS brute-force), when an attacker checks for available records in a domain to know endpoints list to check them for vulnerabilities. For such attacks, there is a lot of utilities… Read More »
In the first post – AWS: Web Application Firewall overview, configuration, and its monitoring – we spoke about its main components, created a WebACL and Rules for it, and did basic monitoring. Also, we’ve configured WebACL’s logs collection with AWS Kinesis, but now it’s time to see them Logz.io, as CloudWatch Logs isn’t available for… Read More »
AWS WAF (Web Application Firewall) is an AWS service for monitoring incoming traffic to secure a web application for suspicious activity like SQL injections. Can be attached to an AWS Application LoadBalancer, AWS CloudFront distribution, Amazon API Gateway, and AWS AppSync GraphQL API. In case of finding any request that sits WAF’s rules, it will… Read More »
AWS CloudTrail is a service for auditing AWS accounts events and is enabled by default. It saves all actions that were done by a user, IAM role, or an AWS service via AWS Console, AWS CLI, or AWS SDK. CloudTrail will write information about every API call, log in to the system, services events, and… Read More »
Recently, AWS blocked our AWS Simple Email Service because of its low bounce rate. This can be checked in the AWS SES > Reputation Dashboard, our account currently has Under review status: After we’ve connected AWS Tech Support, they enabled it back, but we must solve the issue asap, and have to monitor AWS SES… Read More »
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 from… 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 »