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Login into AWS account and click on EC2 In the navigation pane, under NETWORK & SECURITY, select Key Pairs. Create key pair and give a name and type as RSA and private key file format as .ppk for PUTTY compatibility Click on create key pair, A private file gets downloaded automatically The Choose an Amazon Machine Image (AMI) page displays a list of basic configurations called Amazon Machine Images (AMIs) that serve as templates for your instance. Select the HVM edition of the Amazon Linux AMI. ·         Scroll down and ..read more

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 Task: The Nautilus DevOps team is going to deploy some applications on kubernetes cluster as they are planning to migrate some of their existing applications there. Recently one of the team members has been assigned a task to write a template as per details mentioned below: Create a ReplicaSet using nginx image with latest tag only and remember to mention tag i.e nginx:latest and name it as nginx-replicaset. Labels app should be nginx_app, labels type should be front-end. The container should be named as nginx-container; also make sure replicas counts are 4. Note: The kubectl utility on ..read more

 Task: A new MySQL server needs to be deployed on Kubernetes cluster. The Nautilus DevOps team was working on to gather the requirements. Recently they were able to finalize the requirements and shared them with the team members to start working on it. Below you can find the details: 1.) Create a PersistentVolume mysql-pv, its capacity should be 250Mi, set other parameters as per your preference. 2.) Create a PersistentVolumeClaim to request this PersistentVolume storage. Name it as mysql-pv-claim and request a 250Mi of storage. Set other parameters a ..read more

A Kubernetes cluster consists of a set of control plane (master ) and worker machines, called nodes, that run containerized applications. Every cluster has at least one worker node. The worker node(s) host the Pods that are the components of the application workload. The control plane manages the worker nodes and the Pods in the cluster. In production environments, the control plane usually runs across multiple computers and a cluster usually runs multiple nodes, providing fault-tolerance and high availability. Control Plane Components The control plane's components make global decisions ab ..read more

 What is Kubernetes? Kubernetes is a portable, extensible, open-source platform for managing containerized workloads and services, that facilitates both declarative configuration and automation. It has a large, rapidly growing ecosystem. Kubernetes services, support, and tools are widely available. The name Kubernetes originates from Greek, meaning helmsman or pilot. K8s as an abbreviation results from counting the eight letters between the "K" and the "s". Google open-sourced the Kubernetes project in 2014. Kubernetes combines over 15 years of Google's experience running production work ..read more

 Task: The Nautilus DevOps team is working to test several Ansible modules on servers in Stratos DC. Recently they wanted to test file creation on remote hosts using Ansible. More details about the task aregiven below. Please proceed with the same: a. Create an inventory file ~/playbook/inventory on jump host and add all app servers in it. b. Create a playbook ~/playbook/playbook.yml to create a blank file /opt/opt.txt on all app servers. c. The /opt/opt.txt file permission must be 0777. d. The user/group owner of file /opt/opt.txt must be tony on app server 1, steve on app server 2 and ..read more

Task: Nautilus DevOps team is testing some applications deployment on some of the application servers. They need to deploy a nginx container on Application Server 3. Please complete the task as per details given below: On Application Server 3 create a container named nginx_3 using image nginx with alpine tag and make sure container is in running state. Solution: thor@jump_host /$ ssh banner@stapp03 The authenticity of host 'stapp03 (172.16.238.12)' can't be established. ECDSA key fingerprint is SHA256:AJF2x1pj8Ms5Xff85dXW3eULtBP32HV5LdA0H98Uqms. ECDSA key fingerprint is MD5:ab:7d:52:1c:6b:4 ..read more

Task:  The Nautilus DevOps team is going to deploy some applications on kubernetes cluster as they are planning to migrate some of their applications there. Recently one of the team members has been assigned a task to write a template as per details mentioned below: Create a ReplicaSet using nginx image with latest tag only and remember to mention tag i.e nginx:latest and name it as nginx-replicaset. Labels app should be nginx_app, labels type should be front-end. The container should be named as nginx-container; also make sure replicas counts are 4. Note: The kubectl utility on jump ..read more