Dev Brothers Construction Interview Questions and Answers

Troubleshooting crashloop error in Kubernetes involves checking pod logs, examining resource limits, and verifying configuration files.

• Check pod logs to identify the cause of the crashloop.

• Examine resource limits to ensure the pod has enough resources to run.

• Verify configuration files for any errors or misconfigurations.

• Use kubectl commands like describe, logs, and exec to troubleshoot further.

• Consider checking for issues with persistent volumes or network connectivity.

Use the lsof command to list all files held by a process

• Use the lsof command followed by the -p flag and the process ID to list files held by a specific process

• For example, to list all files held by process ID 1234, run: lsof -p 1234

• You can also use the -c flag to specify a process name instead of ID, like: lsof -c chrome

Kubernetes (k8s) fundamentals and role of each component

• Kubelet - agent that runs on each node in the cluster and ensures containers are running

• Kube-proxy - network proxy that maintains network rules on nodes

• Kubernetes API server - central management entity that serves the Kubernetes API

• etcd - distributed key-value store used for storing cluster data

• Kube-controller-manager - runs controller processes to manage the state of the cluster

• Kube-scheduler - assigns workloads to node...read more

Terraform modules are reusable components that can be used to create infrastructure resources.

• Modules are collections of .tf files that define resources and their dependencies

• They can be used to create reusable infrastructure code

• Modules can be published to the Terraform Registry for others to use

• They can be used to create complex infrastructure setups easily

Inodes are data structures in Unix-like file systems that store metadata about files, such as permissions, ownership, and location.

• Inodes contain information about files, such as file size, permissions, timestamps, and pointers to data blocks.

• Each file in a Unix-like file system is represented by an inode.

• Inodes are used to efficiently locate and manage files on the file system.

• When a file is created, an inode is also created to store its metadata.

• Inodes are identified by a u...read more