• What DevOps concepts & tools to learn ?
• Tasks & Responsibilities ?

🔹 DEVELOPMENT :-

• deploying of application
• testing of application

🔹 OPERATIONS :-

• deployment of application
• maintained on a server

Development
✅ Git
✅ How developers work
✅ Which git workflow
✅ How application is configured
✅ Automated testing

🔹 Operations -> Server
🔹 Prepare the infrastructure
✅ Linux Basics
✅ Comfortable using CLI
✅ Shell commands
✅ Linux File System
✅ Server Management
✅ SSH Key Management

✅ Firewall, Proxy Servers
✅ Load Balancers
✅ HTTP/HTTPS
✅ IP, DNS Name Resolution

✅ Virtualization
✅ Containers
✅

Build Automation & CI/CD
✅ Build Tools & Package Manager
(Maven & Gradle -> Java app. , npm -> JS app.)
✅ Build Docker Images
✅ Artifact Repository (Nexus, Docker Hub)
✅ Build Automation (, , )
✅ Configure complete CI/CD pipeline

Infrastructure as a Service
, ,
🔹 Save costs
🔹 Offer a range of services - Load balancing, Backup, Clustering, Security, ...
🔹 Many services are Platform-specific services
🔹 There are too many services
🔹 Only learn services you actually need

🔹For small containers -
✅ Docker compose, Docker Swarm

🔹If we have lot more containers or Incase of big microservices
We need more powerful tool

✅ Kubernetes
🚩 Learn
🚩 How it works, Administor & Manage the cluster, Deploy applications

• Track Performance
• Discover Problems
  ✅ Monitor Software
  ✅ Monitor Infrastructure
  Tools - , Nagios, etc.

🔹 For Production, Testing, Dvelopment
🔹 You need more than one environment
🔹 Manually creating & maintaining the environment :-

• Time consuming
• Error prone
  

• Create infrastructure
• Configure to run & deploy your app

• Infra. Provisioning (Terraform)
• Config. management (, Chef, Puppet)

• More efficient
• Transparent
• Easy to replicate & recover

🔹 Automating tasks for development & operations :-
Backups, cron jobs, system monitoring

✅ Know a Scripting Language
🚩 OS-specific - bash, shell
🚩 OS-independent - , ,

🌟 Python is most popular
🚩 Easy to read
🚩 Easy to learn
🚩 Many Libraries for most of Databases, OS Tasks & Cloud Platforms

✅
✅

🔹 One tool in each category
🔹 Most popular / widely used