Welcome to My Blog!

This blog is dedicated to professionals and enthusiasts working with Linux who are looking for quick solutions, practical guidance, or simply a deeper understanding of Linux technologies. Whether you are troubleshooting an issue or expanding your knowledge, you will find structured and experience-based content here.

This is not a regularly updated news-style blog. Instead, it is organized into well-defined Linux-related topics. As I discover new solutions, useful commands, best practices, or interesting technical insights, I update the relevant section accordingly. Over time, this has grown into a structured knowledge base covering various areas within the Linux ecosystem.

How the Content is Organized

Each topic generally follows a consistent structure:

  1. Overview – A clear explanation of the concept, including important terms and definitions.

  2. Essential Commands – Frequently used commands that are practical for daily administrative tasks.

  3. Real-World Scenarios – Solutions to common problems and situations that administrators may encounter in real environments.

My goal has always been to keep the explanations simple, practical, and easy to follow, so that navigating through the content does not require additional instructions.

All materials shared here are based on my personal experience, hands-on lab work, production environments, community discussions, and other reliable online resources. Whenever I come across valuable technical information that may benefit others, I add it to this blog.

Please note that this blog reflects my personal understanding and perspective on Linux-related topics. It is not an official or vendor-supported site. While most of the content has been tested successfully in lab or real-world scenarios, there may occasionally be typos, missing steps, or inaccuracies. I encourage readers to review and validate commands and configurations carefully before applying them in production environments.

I sincerely hope you find this blog helpful in your daily work and learning journey.

Vallabh Darole



Topics covered in this blog:
  1. Automation: Ansible
  2. Automation: Create a Virtual Machine on vSphere using Ansible
  3. Automation: Harness CI/CD Pipeline
  4. Automation: Installing Zabbix using Ansible
  5. Automation: Jenkin on Rocky Linux 8.
  6. Automation: Lamp in same server
  7. Automation: Lamp Website Deployment on Web01 and Database on Db01
  8. Automation: Puppet 6
  9. Automation: Puppet 7
  10. Automation: Terraform Deployment for VCenter
  11. Backup: OS backup with rear utility
  12. Cheat: Cloud
  13. Cheat: DevOps Cheat
  14. Cheat: Linux-12June21
  15. Cheat: Linux-2016
  16. Cheat: RHEL 8
  17. Cheat: Ubuntu
  18. Cloud: AWS Beginner's Guide
  19. Cloud: Azure DevOps Dumps
  20. Cloud: Azure DevOps Overview
  21. Cloud: Microsoft Azure Beginner's Guide
  22. Cloud: Resizing the Root Partition on an AWS Linux Instance
  23. Disk Management: fdisk and parted
  24. Disk Management: LVM
  25. Disk Management: Storage Data Migration on Physical Linux Servers
  26. Editor: VI Editor for Linux
  27. Interview: Linux01
  28. Interview: Linux02
  29. Interview: Linux03
  30. Interview: Puppet
  31. Interview: Redhat-Satellite
  32. Interview: Tell me about yourself.
  33. Kode Kloud: Ansible
  34. Kode Kloud: Azure
  35. Kode Kloud: Docker
  36. Kode Kloud: GIT
  37. Kode Kloud: Jenkins
  38. Kode Kloud: Kubernetes
  39. Kode Kloud: Terraform
  40. Linux Training: Day-1
  41. Linux Training: Day-2
  42. Linux Training: Day-3
  43. Linux Training: Day-4
  44. Linux Training: Day-5
  45. Linux Training: Day-6
  46. Linux Training: Day-7
  47. Linux Training: Network Namespace
  48. Monitoring: Prometheus and Grafana
  49. Monitoring: Zabbix-4 on CentOS 7
  50. Monitoring: Zabbix-5 on CentOS 7
  51. Monitoring: Zabbix-6 on Rocky Linux 8
  52. OS Upgrade Ubuntu 18.04 LTS to Ubuntu 20.04 LTS
  53. OS Upgrade: RHEL 7 to RHEL 8
  54. OS Upgrade: RHEL 8 to RHEL 9
  55. Project 1: Web Application on vvm06 and MariaDB Database on vvm07
  56. Project 10: Deployment and Configuration of Infrastructure Project
  57. Project 11: On-Prem DevOps Infrastructure Project (2026 Edition)
  58. Project 2: Web Application and MariaDB Database with PHP-MYADMIN
  59. Project 3: WordPress on Ubuntu 18
  60. Project 4: Cluster on CentOS 7
  61. Project 5: Deployment and Configuration of Infrastructure Project base on Linux
  62. Project 6: GIT
  63. Project 7: Deployment and Configuration of Infrastructure Project base on Linux
  64. Project 8: Deploying Azure Resources with Terraform and Azure DevOps
  65. Project 9: Task Manager app
  66. Repository: OS Patching on Centos 7
  67. Repository: Build an RPM Package
  68. Repository: GITHUB
  69. Repository: Local Repository on CentOS 7 using reposync
  70. Repository: Open Source satellite
  71. Repository: Redhat Satellite
  72. Repository: Redhat Satellite and Capsule
  73. Service : NFS Server on CentOS 7 / RHEL 7
  74. Service: Apache Tomcat 10 on Ubuntu 20.04
  75. Service: Centralized log server.
  76. Service: DNS Server on Centos 7
  77. Service: enable/analysis Kdump
  78. Service: How to Log in to a Linux Box Using SSH Keys
  79. Service: Load Balance with HA Proxy
  80. Service: NTP (Date/Time )
  81. Service: Postfix Mail Server on CentOS 7
  82. Service: SonarQube code scanner
  83. Service: Web Service (Apache).
  84. Shell-Script: AWK SED
  85. Shell-Script: Create Server Inventory using script.
  86. Shell-Script: Create Server Inventory using script(Aug2026).
  87. Shell-Script: Pre-Post-Check for CentOS-7
  88. Shell-Script: Pre-Post-Check for ubuntu 18
  89. Shell-Script: Remote command through SSH
  90. Troubleshooting: How to fix delay in SSH login
  91. Troubleshooting: How to recover "/etc/shadow" file in Centos 7
  92. Troubleshooting: How to Reset Root Password on CentOS 7
  93. Troubleshooting: Linux System Performance Monitoring
  94. Troubleshooting: LVM
  95. Troubleshooting: Memory (cache issue)
  96. Virtualization: VMWare Virtualization
  97. Virtualization: Docker on CentOS 7
  98. Virtualization: Docker on Ubuntu
  99. Virtualization: Kernel based Virtual Machine centos 7
  100. Virtualization: Kernel based Virtual Machine on Redhat Linux 9
  101. Virtualization: Kernel based Virtual Machine on Rocky Linux 8
  102. Virtualization: Kubernetes
  103. Virtualization: Kubernetes (Azure AKS)
  104. Virtualization: Kubernetes Cluster 1.28
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