Reddit Interview Questions (8+ Questions)

We have a Kubernetes cluster with deployment web app in namespace prod, and it's stuck in crash loop back of state. Our task is to fix the PO so it reaches the running state. Config directory already exists and it's used by an application. We cannot mount config map over the entire directory 'cause it'll override and cause app to fail. The deployment needs to be fixed in the way that configuration is injected without replacing the existing directory. Check the logs. Log says that config file could not be found. We're missing the config map. We're missing sub path because we're trying to mount a file instead of directory. But if we don't use sub path, this file will be mounted as a folder. We need to fix this by adding sub path. We type QCTL added deployment web Appen Pro find section that says volume mounts and add sub path config yaml. Our port is now working, it's a running state and the old one is getting terminated.

Kubernetes RBAC Pod Reader: Namespace demo read-only Access Control. Grant monitoring applications precise read-only Pod access in demo namespace using RBAC Role pod-reader, ServiceAccount reader-sa, and RoleBinding pod-reader-binding. Authorize only get, list, watch verbs on pods resource for principle of least privilege. Perfect for monitoring tools, observability platforms, security auditing, compliance requirements, and namespace-scoped access control.

We have a repo with a build script that produces two files, build.log and test-results.txt. We need to upload both as artifacts, but with different retention periods. Build logs only needs to stick around for five days, whereas the test results should be kept for 30 days. Artifacts are files that a ...

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Analyze a running process suspected of leaking file descriptors using the /proc filesystem. Identify and categorize open pipes, sockets, and files to create a diagnostic report.

Fix the ownership and permissions of a private key file so it meets security requirements and allows the application service to start.

Optimal SQL Query for Retrieving and Ordering Items from a Database Table

When working with a database table named items, containing columns such as id, item_name, type, and cost, it’s essential to construct an efficient SQL query to retrieve and sort data based on specific criter...

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How to Identify Missing Dates in a Table Using SQL

Objective: Identify Missing Dates in the Calendar Table

When working with databases, you may encounter situations where you need to find missing dates in a sequential range. Given a table named Calendar that holds records of various e...

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SQL Query for Calculating Average Number of Items Per Order for Each Customer

Creating an SQL query to calculate the average number of items per order for each customer is a common task in database management and data analysis. This involves employing SQL aggregate functions and groupings to ex...

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