Hashicorp Interview Questions (11+ Questions)

Learn how to use Linux Bash commands like ps, sort, uniq, and awk to identify which user is running the most processes on a shared server and write the top offending username to a file for further resource management and quota enforcement.

Troubleshoot intermittent service failures by tracking file modifications in Linux. Learn how to use the find command to locate files under /etc modified within the last 24 hours, filter results by user ownership (e.g., the nginx user), and format output with timestamps for easy correlation with deployment windows. This guide covers auditing configuration drift, identifying unauthorized or accidental script changes, and verifying file integrity to restore service stability.

Troubleshoot volume mounting failures by aligning volumeMode settings between PersistentVolume and PersistentVolumeClaim. Fix db-pod volumeMode mismatch, mount storage at /var/lib/data, and resolve Pending pod state. Essential for persistent storage configuration, volume management, storage class alignment, and ensuring pods can successfully claim and mount volumes.

Fix a failing Kubernetes Job by correcting the command entrypoint, mounting a ConfigMap volume to the required path, and setting the appropriate restart policy. Edit the manifest file, replace the broken Job, and verify successful completion with exit code 0.

Learn to implement GitHub Actions concurrency control to prevent simultaneous workflow runs. Configure cancel-in-progress behavior to automatically terminate older deployments when new commits are pushed to the same branch, ensuring only the latest code deploys.

Secure your GitHub Actions pipelines by hardening permissions. Learn to enforce a global "Read-Only" policy and granularly escalate privileges only for jobs that require write access.

Use pandas to calculate rolling mean, sum, and standard deviation across multiple window sizes (7, 14, 30 days) for stock price data containing multiple tickers, applying groupby operations.

SELECT
c.industry,
SUM(i.amount) AS total_investment
FROM {{ ref("companies") }} c
INNER JOIN {{ ref("investments") }} i
ON c.company_id = i.company_id
GROUP BY c.industry
ORDER BY total_investment DESC

def merge_triplets(triplets: list[list[int]], target: list[int]) -> bool:
good_indices = set()

for t in triplets:
    if t[0] > target[0] or t[1] > target[1] or t[2] > target[2]:
        continue
        
    for i, val in enumerate(t):
        if val == target[i]:
            good_indices.add(i)
            
    if len(good_indices) == 3:
        return True
        
return len(good_indices) == 3

SQL Query to Determine Supplier Performance Based on On-Time Deliveries

Objective

To determine the performance of suppliers by calculating the percentage of orders delivered on or before the expected date, you'll need to write an SQL query. The output should list each supplier's name, thei...

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