Self-Reflection On Kubernetes Training

💥 It was my pleasure to attend Kubernetes Training under the guidance of Mr. Vimal Daga sir. In the starting i don’t have any technological knowledge only have some basics of language, but when i joined Linux World , now i know lots of technologies. Being a part of Linux World and under the able guidance of Mr. Vimal Daga who was itself a privilege.

Thankyou so much sir . I love the way of your Teaching. You teaches in a way that even a beginner can learn and understand.

#vimaldaga #rightmentor #righteducation # worldrecordholder #linuxworld #Kubernetes

Topics i learnt throughout this journey

Introduction to Kubernetes

• Overview of Dockers and Containers
• What is Container Orchestration?
• What is Kubernetes
• Kubernetes Use Cases

Managing the Kubernetes Cluster

• Upgrading the Kubernetes Cluster
• ETCD
• Kube-API Server
• Controller Manager Scheduler
• kubelet
• Installation of kubelet in worker nodes in kubeadm method kube proxy
• PODs
• Pods creation using yaml file ReplicaSets
• ReplicaSet creation using yaml file Deployments
• Deployment creation using yaml file Services, Service Cluser IP
• Service creation using yaml file Job Scheduling Using Kubernetes Scheduler

Working with Namespaces and Pods

• Overview of Namespaces and creating Namespaces
• Introduction to Pods
• Pods Lifecycle
• Working with Pods to manage multiple containers
• Deploying Pods using kubectl run command.

Scheduling Pods

• Manual Scheduling
• Scheduling Pod using Binding Labels and Selectors
• Labels and Selectors in ReplicaSet Resource Requiments and Limits
• Multiple Scheduler
• Docker commands instead of kubectl commands in static POD Assisted Practice: Multiple Scheduler — Introduction
• Configure the POD with custom scheduler Assisted Practice: Create custom scheduler in Kubeadm Task Allocation Using Kubernetes Scheduler

Logging and Monitoring

• Monitor Cluster Components
• kubectl top commands
• Viewing logs in multicontainer POD Health Monitoring Using Kubernetes

Application Lifecycle Management

• Rolling Updates and Rollbacks
• Deployment rolling update with kubectl rollout (command) Assisted Practice: Deployment rolling update with editing the Deployment file Assisted Practice: Rollout status check
• Create a Pod with ‘echo host name’ commands Assisted Practice: Create a Pod with ‘sleep 3600’ arguments Configure Environmental variables n applications
• Create a Pod with environment of ‘sample environment’ Configuring ConfigMaps in Applications
• Create a configmap from the values with variable Assisted Practice: Create a configmap from file
• Create a configmap from env file
• Configure a configmap as a file in the POD Assisted Practice: Configure a configmap as a variable in the POD Assisted Practice: Configure a configmap as a volume in the POD Scale Applications
• Scale up and Down with kubectl command Multi-container PODs
• Create a multi container pod which access same volume Multi-container PODs Design Patterns
• InitContainers
• InitContainers Demonstration Self Healing Applications

CICD (Continues Integration and Continues Deployment)

Security and Authentication

• Kubernetes Security Primitives Authentication
• TLS
• Certificates API Kubeconfig
• Persistent key/value store API Groups
• Role Based Access Controls
• RBAC role creation Assisted Practice: Cluster Role Creation Cluster Roles and Role Bindings
• Associate the user with the role Assisted Practice: Associate the user with Cluster Role Image Security
• Secrets with private registry info stored Network Policy
• Create network policy

Managing Data in the Kubernetes Cluster

• Persistent Volumes
• Volume Access Modes
• Persistent Volume Claims
• Storage Objects
• Applications with Persistent Storage

Storage and Volumes

• Volumes
• Create a volume with Declarative (Yaml) Assisted Practice: Create a volume with Host path (Host Drive) Assisted Practice: Create a volume with Empty Dir (Auto deletion) Assisted Practice: Create a volume with nfs share
• Persistent Volumes
• Introduction to Persistent volume
• Create a persistent volume with declarative (yaml) Persistent Volume Claims
• Introduction to Persistent volume claims
• Create a persistent volume claims with declarative (yaml) Application Configuration
• Pod Creation with volumes
• Pod Creation with Persistent volume Claims Deploy Large scale Applications

DNS Networking, CoreDNS, and CNI

• Switching and Routing DNS
• CoreDNS
• CoreDNS — Installation and Configuration Network Namespaces
• Docker Networking
• Create Network namespaces CNI
• Cluster Networking CNI in Kubernetes
• Configuring CNI in kubelet.service CNI in weave
• Weaveworks — Intro IP Address Management — weave
• IPAM — Weave using DHCP or host-local Service Networking
• Cluster IP Assisted Practice: NodePort DNS in kubernetes CoreDNS in kubernetes
• Name resolution in svc in a single namespace Assisted Practice: Name resolution in svc in a different namespace Ingress
• CoreDNS Setup
• Ingress creation with 1 rule with multiple paths Load Balancer

Troubleshooting: Application Failures, Control Panel Failures, and Network Failures

• Application Failure — Check POD, Logs and Events Control Panel Failure
• Networking Failure
• Service connectivity check Assisted Practice: Nslookup check
• kube-proxy check and CNI plugin check Assisted Practice: Network failure check in above stuffs Debugging

Kubernetes Schedulings

• Overview of kube-scheduler
• Scheduling with kube-scheduler
• Scheduler Policies
• Horizontal Pod Autoscaling
• Affinity and Anti-Affinity

and many more …

Special Thanks to Vimal Daga sir and Preeti Chandak ma’am for making us future ready….. Thanks a lot… 😀🙌🏻