Category Archives: Monitoring

Hardware, services and network monitoring systems

Elastic Stack: an overview and ELK installation on Ubuntu 20.04

22 February 2022
 

 The last time I’ve worked with the ELK stack about 7 years ago, see the ELK: установка Elasticsearch+Logstash+Kibana на CentOS. Currently, we are using Logz.io, but its costs going higher and higher, so we started looking at the self-hosted ELK solution to be running on our AWS Elastic Kubernetes Service clusters. So, the task, for… Read More »

AWS: Trusted Advisor, part 2 – CloudWatch Alarms and Slack notifications

29 November 2021
 

 Continuing with the theme of the AWS Trusted Advisor service, let’s see how can we configure notifications about new findings. The first part: AWS: Trusted Advisor, part 1 – its features overview. To have notifications, we can use Trusted Advisor metrics from the CloudWatch, see their list on the Trusted Advisor metrics and dimensions page.… Read More »

AWS: Trusted Advisor, part 1 – its features overview

29 November 2021
 

 AWS Trusted Advisor is another service that allows monitoring your accountant its resources in use for their cost-effectiveness, performance, security, and more. Keep in mind, that Trusted Advisor’s checks that are available for you depend on the AWS Support Plan of your account. вашего аккаунта. Fortunately, we have Premium so I’m able to how all… Read More »

AWS: Lambda – copy EC2 tags to its EBS, part 2 – create a Lambda function

13 October 2021
 

 let’s proceed in our journey of the AWS Lambda function, which will copy an EC2’s AWS Tags to all EBS volumes, attached to it. In the first part, AWS: Lambda — copy EC2 tags to its EBS, part 1 – Python and boto3, we wrote a Python script that can get all EC2 instances in… Read More »

AWS: WAF WebACL logging and Logz.io integration

22 July 2021
 

 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: Web Application Firewall overview, configuration, and its monitoring

19 July 2021
 

  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… Read More »

AWS: CloudTrail overview and integration with CloudWatch and Opsgenie

15 July 2021
 

 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 »

AWS: Simple Email Service Bounce rate and monitoring with and Prometheus

14 July 2021
 

 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 »

Kubernetes: namespace hangs in Terminating and metrics-server non-obviousness

1 April 2021
 

 Faced with a very interesting thing during removal of a Kubernetes Namespace. After a kubectl delete namespace NAMESPACE is executed, the namespace hangs in the Terminating state, and any attempt to forcibly remove it didn’t help. First, let’s see how such a force-removal can be done, and then will check the real cause and a… Read More »

Opsgenie: integration with AWS RDS and alerting

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 »