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25 April

Am I reading the iostat command output correctly?

  • Posted by lakhera2020
  • Comments 0 comment

Iostat command came from the same sysstat family package # rpm -qf `which iostat` sysstat-11.7.3-6.el8.x86_64 It mainly read data from /proc/diskstats # cat /proc/diskstats 259 0 nvme1n1 147 0 6536 …

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21 April

Debugging Performance Issue using SAR

  • Posted by lakhera2020
  • Comments 2 comments

What is SAR? SAR is a utility used to collect and report system activity. It collects data relating to most core system functions and writes those metrics to binary data …

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20 April

4 common Kubernetes Pods Error and Debugging

  • Posted by lakhera2020
  • Comments 0 comment

Why do Kubernetes Pods fail? The two most common reasons for Kubernetes pod failure is The container inside the pod doesn’t start, which we also call a startup failure. The …

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16 October

My road to Gremlin Chaos Engineering Practitioner Certificate

  • Posted by lakhera2020
  • Comments 0 comment

Chaos Engineering is one field that always draws my attention. I came to know about it after I heard about the Netflix Simian Army toolkit https://github.com/Netflix/SimianArmy . At an initial glance, it’s …

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21 September

My road to Certified Kubernetes Security Specialist (CKS)

  • Posted by lakhera2020
  • Comments 0 comment

WARNING: Before reading this doc 🙂 🙂 1: As everyone needs to sign NDA with CNCF, I can’t tell you the exact question asked during the exam neither I have GB of …

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19 June

How to stop/start EC2 instance on a scheduled basis to save cost by using Boto3 and Lambda

  • Posted by lakhera2020
  • Comments 0 comment

This is one of the ask I came across in Dev env in terms of saving cost where I need to shut down all the EC2 instance at 6 pm …

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17 June

Boto3 Concepts(Waiter, Meta, and Paginator)

  • Posted by lakhera2020
  • Comments 0 comment

In the last blog, you understand the concept of Boto3. Let’s solidify that idea by looking at some other Boto3 concepts. Boto3 Meta Boto3 Paginator Boto3 Waiters Waiters: In the …

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16 June

Introduction to AWS Boto3

  • Posted by lakhera2020
  • Comments 0 comment

What is Boto3? Boto3 is the Amazon Web Services (AWS) SDK for Python. It enables Python developers to create, configure, and manage AWS services, such as EC2 and S3. Boto3 …

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28 May

My two cents on Blockchain and Cryptocurrency

  • Posted by lakhera2020
  • Comments 0 comment

Blockchain or one of its applications is one of the hottest topics in recent times. All the laymen are wondering it’s too late to invest in it and techie trying …

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21 March

My journey of writing a tech book

  • Posted by lakhera2020
  • Comments 0 comment

This blog will share my journey of writing my first book, AWS for System Administrators. Today I received the printed copy of my book AWS for System Administrators This is …

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