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Arseny Zinchenko (setevoy)
Arseny Zinchenko (setevoy)

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Jun 10

AWS: VPC Flow Logs — знайомство та аналітика з CloudWatch Logs Insights

AWS VPC Flow Logs — сервіс Amazon, який дозволяє логувати інформацію про трафік між мережевими інтерфейсами у AWS VPC. Далі, ці логи можуть бути передані у AWS CloudWatch Logs для подальшого аналізу, при цьому логування трафіку ніяк не впливає на швидкість роботи мережі. Коротко розглянемо основні поняття, доступні опції та…

AWS

10 min read

AWS: VPC Flow Logs — знайомство та аналітика з CloudWatch Logs Insights
AWS: VPC Flow Logs — знайомство та аналітика з CloudWatch Logs Insights

Published in ITNEXT

·Apr 2

NGINX: IP Geolocation by Cloudflare and “nested” if conditions

Among other features provided by Cloudflare, it can add a special header with a country value, from where a visitor came. As a Ukrainian, I’d like to ban all visitors from russia, but: redirect all visitors from Russian IPs to another web domain — russki-voenny-korabl-idi-nahuy.com during this, I’d like to…

Ukraine

4 min read

NGINX: IP Geolocation by Cloudflare and “nested” if conditions
NGINX: IP Geolocation by Cloudflare and “nested” if conditions

Published in ITNEXT

·Mar 30

Cloudflare: speed up WordPress with Automatic Platform Optimization plugin

The rtfm.co.ua blog is quite slow for users. For example, you can test your website using the https://gtmetrix.com:

Cdn

4 min read

Cloudflare: speed up WordPress with Automatic Platform Optimization plugin
Cloudflare: speed up WordPress with Automatic Platform Optimization plugin

Mar 19

SSH: the “Too many authentication failures” error and its solution

During an SSH connection, I started getting the “Too many authentication failures” error message from a remote host. The error, and its cause Actually, the root cause is simple: during establishing a new SSH connection, the local ssh-client first tries to use keys, that are loaded by the local ssh-agent, and only after that will…

Ssh

2 min read


Published in ITNEXT

·Feb 22

Elastic Stack: an overview and ELK installation on Ubuntu 20.04

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, …

AWS

17 min read

Elastic Stack: an overview and ELK installation on Ubuntu 20.04
Elastic Stack: an overview and ELK installation on Ubuntu 20.04

Published in ITNEXT

·Nov 29, 2021

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

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…

Monitoring

6 min read

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

Published in ITNEXT

·Nov 29, 2021

AWS: Trusted Advisor, part 1 — its features overview

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. …

AWS

5 min read

AWS: Trusted Advisor, part 1 — its features overview
AWS: Trusted Advisor, part 1 — its features overview

Published in ITNEXT

·Nov 3, 2021

AWS: Cost optimization — services expenses overview and traffic costs in AWS

Let’s proceed with our journey on AWS Cost Optimization topics. Previous parts — AWS: Cost Explorer — costs checking on the CloudWatch Logs example and AWS: cost optimization — purchasing RDS Reserved Instances. One of the shortcomings of the cloud-based architecture is the fact, that it can cost much more…

AWS

8 min read

AWS: Cost optimization — services expenses overview and traffic costs in AWS
AWS: Cost optimization — services expenses overview and traffic costs in AWS

Published in ITNEXT

·Oct 13, 2021

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

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…

AWS

7 min read

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

Published in ITNEXT

·Oct 13, 2021

AWS: Lambda — copy EC2 tags to its EBS, part 1 — Python and boto3

We have an AWS Elastic Kubernetes Service cluster, which has a few WorkerNode Groups that were created as AWS AutoScaling Groups by using the eksctl, see the AWS Elastic Kubernetes Service: a cluster creation automation, part 2 – Ansible, eksctl for more details. The WorkerNode Group configuration for the eksctl…

AWS

9 min read

AWS: Lambda — copy EC2 tags to its EBS, part 1 — Python and boto3
AWS: Lambda — copy EC2 tags to its EBS, part 1 — Python and boto3
Arseny Zinchenko (setevoy)

Arseny Zinchenko (setevoy)

Cloud Infrastructure and DevOps engineer

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