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

 Click to Listen the story of Linux 

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