coMakeIT Senior Devops Engineer Interview Questions and Answers

Ingress is a Kubernetes resource that manages external access to services, and a sidecar container is a secondary container that runs alongside the main container in a pod.

• Ingress is a Kubernetes resource that acts as an API gateway for incoming traffic to services within the cluster.

• Ingress controllers are responsible for implementing the rules specified in the Ingress resource.

• Sidecar containers are additional contai...read more

Services in k8s are abstractions that define a set of pods and a policy for accessing them.

• Services allow communication between different parts of an application within a Kubernetes cluster.

• They provide a stable endpoint for accessing a set of pods, even if the pods are scaled up or down.

• Services can be of different types such as ClusterIP, NodePort, LoadBalancer, and ExternalName.

• ClusterIP services expose the service ...read more

I have recently worked on implementing CI/CD pipelines using Jenkins, Docker, and Kubernetes.

• Implemented Jenkins pipelines for automating build, test, and deployment processes

• Utilized Docker for containerization of applications and services

• Managed Kubernetes clusters for container orchestration

• Integrated monitoring and logging tools like Prometheus and ELK stack

Terraform templates can be used to create AKS clusters.

• Use the azurerm_kubernetes_cluster resource in Terraform to create an AKS cluster.

• Specify the required parameters such as resource group, location, node count, and node size.

• Use the azurerm_kubernetes_service_principal resource to create a service principal for the AKS cluster.

• Use the azurerm_kubernetes_cluster_node_pool resource to create node pools with specific ...read more

Ansible was extensively used in the project for configuration management and automation.

• Automated deployment of applications using Ansible playbooks

• Configuration management of servers using Ansible roles

• Automated backup and restore of databases using Ansible scripts

• Automated provisioning of infrastructure using Ansible modules

ext is the default file system for many Linux distributions, while xfs is known for better performance and scalability.

• ext is the default file system for many Linux distributions

• xfs is known for better performance and scalability

• xfs supports larger file systems and files compared to ext

CentOS/RHEL 6 & 7 differ in kernel version, package management, systemd, and support lifecycle.

• Kernel version: CentOS/RHEL 6 uses kernel version 2.6.x while CentOS/RHEL 7 uses kernel version 3.x.

• Package management: CentOS/RHEL 6 uses yum for package management, while CentOS/RHEL 7 uses yum and dnf.

• Systemd: CentOS/RHEL 6 uses SysV init system, while CentOS/RHEL 7 uses systemd as the init system.

• Support lifecycle: CentOS...read more