New Relic
What is New Relic? New Relic is a comprehensive software analytics and performance monitoring platform that provides real-time insights into the health and performance of your applications, infrastructure, and customer…
AWS
Security group in ec2 instance is network firewall and not OS firewall storage for running VM to connect window port no 3389 nd RDP connect via public ip address if…
Log Rotation in Linux
Managing log files is a critical task in maintaining server health and preventing disk space issues. Enabling log rotation helps manage the size of log files, but it needs to…
Performance testing and Capacity planning
Performance Testing Performance testing helps you understand how your system behaves under various loads. Here’s how to do it step-by-step: Step 1: Define Performance Metrics and Objectives Step 2: Choose…
Troubleshooting a database server in Linux
Troubleshooting a database server in Linux involves a systematic approach to identify and resolve issues related to configuration, performance, connectivity, security, and more. Below are steps and commands to help…
Common errors encounter in web server in Linux
When troubleshooting a web server in Linux, a variety of errors can arise. These errors can be related to configuration issues, resource limitations, network problems, security settings, or application-specific bugs.…
Common errors encounter for applications in Linux
When troubleshooting applications in Linux, a wide range of errors can occur due to various reasons such as configuration issues, resource limitations, dependency problems, and more. Below is a list…
Types of errors encounter in virtual machine (VM) in Linux
When managing a virtual machine (VM) in Linux, you may encounter various types of errors that necessitate checking the logs in the /var/log directory, particularly the syslog file and other…
Troubleshooting a web server in Linux
Troubleshooting a web server in Linux involves checking various components, including the server status, configuration files, logs, network settings, and more. Here’s a step-by-step guide to help you troubleshoot common…
Troubleshooting an application in Linux
Troubleshooting an application in Linux involves a systematic approach to diagnose and resolve issues. Here are some steps and commands to help you troubleshoot applications effectively: 1. Check Application Status…
To check system performance metrics in Linux
To check system performance metrics such as CPU, RAM, disk, I/O, and network in Linux, you can use a combination of built-in tools and utilities. Here are some of the…
To check the logs of a virtual machine in Linux
To check the logs of a virtual machine in Linux, particularly focusing on the /var/log directory and using the grep command to filter the syslog files, follow these steps: 1.…
Main Tasks of an SRE (Site Reliability Engineer)
1. Monitoring and Observability 2. Incident Response and Management 3. Performance Tuning and Capacity Planning 4. Automation and Tooling 5. Reliability Engineering 6. Infrastructure Management 7. Security and Compliance 8.…
Bash Scripting
1. Introduction to Bash Scripting What is Bash? 2. Basic Concepts Shebang (#!) Creating and Running a Script 2.Add Executable Permissions: Make the script executable 3. Edit the Script File:…
Top 100 Complex Linux Troubleshooting Commands (Combined with Other Commands)
Command Combination Description Example dd if=/dev/urandom of=/tmp/randomfile bs=1M count=10 Create a 10MB file with random data. dd if=/dev/urandom of=/tmp/randomfile bs=1M count=10 find / -name “*.log” -mtime +30 Find log files…
Top Linux Troubleshooting Commands with Examples
Command Description Example top Display tasks and system information. top htop Interactive process viewer. htop ps Display current processes. ps aux kill Terminate a process by PID. kill -9 1234…
Ultimate guide for terraform from basic to advance
What is the need of terraform IAAC? The need for Terraform Infrastructure as Code (IaAC) is driven by several key benefits: Summary: List of IaaC tools Here is a list…
Ansible – Vault in Ansible (Part-11)
What is Ansible Vault? Ansible Vault is a feature within Ansible that allows you to keep sensitive data, such as passwords, keys, and other secrets, secure. Vault encrypts the contents…
Ansible – Inventory variables in Ansible (Part-11)
What are Inventory Variables in Ansible? Inventory variables in Ansible are key-value pairs that provide additional context and configuration for hosts and groups defined in your inventory. These variables can…
Ansible – How Default Ansible Variables Work (Part-10)
How Default Variables Work 1.Default Variables in a Role Default variables for a role are defined in the defaults/main.yml file. These variables provide baseline values that the role will use…