Redhat Interview Questions (11+ Questions)
Last Updated: June 8, 2026 • 11 Questions • Real Company Interviews
Prepare for your Redhat interview with our comprehensive collection of 11+ real interview questions and detailed answers. These questions have been curated from actual Redhat technical interviews across various roles including DevOps Engineer, Data Engineer, QA Engineer, and more.
Table of Contents
- Analyzing Log Partition Usage (medium)
- Using Unmounted Partitions (medium)
- Cron-Based Process Monitoring (medium) 🔒
- CPU Resource Management Priority (easy)
- Revert a Bad Commit from Main (easy) 🔒
- CronJob Schedule Misconfiguration (medium)
- Expose Pod as Service (easy) 🔒
- New vs. Returning Customer Report (easy) 🔒
- Aggregate Employee Salaries (medium) 🔒
- Aggregate Conditional Averages (easy) 🔒
- Set Operation EXCEPT for Order Comparisons (hard) 🔒
Our Redhat interview questions cover a wide range of technical topics and difficulty levels, from entry-level positions to senior roles. Each question includes detailed explanations and answers to help you understand the concepts and prepare effectively for your interview.
💡 Pro Tips for Redhat Interviews
- Practice each question and understand the underlying concepts
- Review Redhat's specific technologies and methodologies
- Prepare follow-up questions and edge cases
- Practice explaining your solutions clearly and concisely
Interview Questions & Answers
1. Analyzing Log Partition Usage
Learn how to identify filesystem mount points and diagnose storage-related issues using Linux Bash commands. This guide covers determining which device /var/log resides on, inspecting mount properties, and investigating space constraints, essential for troubleshooting log rotation failures and preventing partition-specific storage exhaustion in production systems.
2. Using Unmounted Partitions
Learn how to identify, format, and mount unmounted partitions on Linux using Bash commands. This guide covers discovering unused block devices, creating filesystems, assigning labels, and temporary mounting, essential for expanding storage capacity, utilizing available hardware resources, and solving storage-related outages in production systems.
3. Cron-Based Process Monitoring
Master how to enhance a Linux Bash script for periodic monitoring that records the five most recently started process start times without duplicates. This guide includes appending new data safely in a cron-executed script, useful for tracking system behaviors and diagnosing intermittent failures in production environments.
4. CPU Resource Management Priority
Learn how to temporarily reduce the CPU priority of a resource-intensive Linux process using Bash commands without stopping it. This approach helps maintain system responsiveness during peak loads by adjusting process priority with tools like renice, ensuring critical workflows continue uninterrupted while freeing CPU for user services.
5. Revert a Bad Commit from Main
Safely undo bad commits that have been pushed to shared repositories using git revert. Create new commits that invert problematic changes, maintain complete commit history for audit trails, prevent breaking other developers' work, and enable safe collaboration on main branches. Essential for production hotfixes, team workflows, maintaining history integrity, and following Git best practices for shared repositories.
6. CronJob Schedule Misconfiguration
Fix the cleanup CronJob so that validation confirms it triggers exactly once per minute.
7. Expose Pod as Service
Kubernetes ClusterIP Service: Expose nginx-pod as nginx-svc on Port 80. Learn how to create a ClusterIP service to expose your running nginx-pod across the Kubernetes cluster. This task demonstrates setting up nginx-svc service on port 80 to provide stable networking for internal cluster applications, enabling pod discovery, load balancing, and service-based communication. Perfect for Kubernetes networking basics, internal service discovery, microservices architecture, and preparing for Ingress and LoadBalancer services.
8. New vs. Returning Customer Report
Generating a Detailed Customer Order Report in SQL
The given objective of this interview question is to write an SQL query to generate a comprehensive report that lists each order along with specific associated details such as order date, customer ID, customer name, and customer type, which ind...
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9. Aggregate Employee Salaries
Objective
Given two tables, employees and departments, construct a SQL query to display each department's name, the total number of employees in that department, the aggregate salary of all its employees, and the average salary rounded to two decimal places. The output should be sorted alpha...
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10. Aggregate Conditional Averages
Understanding the SQL Interview Question: Finding Average Order Amounts for High-Value Orders by Category
Objective
In this SQL interview question, you are tasked with writing a query to find the average order amount for high-value orders (defined as orders with an amount greater than 1000...
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11. Set Operation EXCEPT for Order Comparisons
Objective:
As part of your SQL interview preparation, one crucial skill is the ability to write complex queries that amalgamate data from multiple tables. A common interview question is to identify customers with multiple non-returned orders. Here’s how you can achieve this using SQL:
SQL ...
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