devops-study-notes

Here are all the topics included in your notes:

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Linux

• File system structure
• Navigation & file operations
• File permissions (chmod, chown)
• Process management
• Disk & memory commands
• User & group management
• SSH (key-based auth, SCP)
• Cron jobs & scheduling
• Environment variables

👉 View Linux Study Notes (PDF)

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Shell Scripting

• Variables, if/else, loops (for, while)
• Functions
• Text processing (awk, sed, cut, grep)
• Exit codes
• Real deployment scripts

👉 View Shell Scripting Notes (PDF)

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Git & Version Control

• Core Git workflow
• Branching (GitFlow, Trunk-Based)
• Git log, history, undoing mistakes
• Azure Repos & branch policies

👉 View Git & Version Control Notes (PDF)

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Networking

• OSI model
• TCP vs UDP
• IP addressing & CIDR
• DNS record types
• HTTP status codes
• Important port numbers
• Azure VNet, Subnets, NSG
• Load Balancer vs Application Gateway
• VNet Peering, Private Endpoints, Azure Bastion

👉 View Networking Notes (PDF)

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CI/CD

• Pipeline stages (build, test, scan, package, deploy)
• Jenkins architecture & Jenkinsfile
• GitHub Actions YAML
• Azure DevOps Pipelines (full YAML)
• Pipeline templates & reuse
• Approval gates & branch controls

👉 View CI/CD Notes (PDF)

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Azure Services

• Compute (VMs, App Service, Functions, ACI, VMSS)
• Storage (Blob, Files, Disk, Queue, Table)
• Databases (SQL, PostgreSQL, MySQL, Cosmos DB, Redis)
• Identity (Azure AD / Entra ID, Managed Identity, RBAC)
• Azure Key Vault
• Azure Policy & Defender for Cloud

👉 View Azure Services Study Notes (PDF)

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Azure DevOps

• Azure Boards (Epics, Stories, Tasks, Bugs)
• Azure Repos & branch policies
• Azure Pipelines (stages, jobs, steps, tasks)
• Service connections
• Environments & approvals
• Azure Artifacts
• Azure Test Plans
• Pipeline templates
• Variable groups & Key Vault linking

👉 View Azure DevOps Study Notes (PDF)

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Docker

• Image & container concepts
• Docker vs Virtual Machine
• Dockerfile writing & layer caching
• Docker commands (build, run, exec, logs)
• Docker Volumes
• Docker Networking
• Docker Compose
• Azure Container Registry (ACR)

👉 View Docker Study Notes (PDF)

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Kubernetes

• Architecture (control plane & worker nodes)
• All K8s objects (Pod, Deployment, Service, ConfigMap, Secret, Ingress, PV, PVC, DaemonSet, StatefulSet, Job, CronJob)
• kubectl commands
• Writing YAML manifests
• Service types (ClusterIP, NodePort, LoadBalancer)
• Ingress routing
• Rolling updates & rollbacks
• Horizontal Pod Autoscaler (HPA)
• Cluster Autoscaler

👉 View Kubernetes Study Notes (PDF)

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AKS (Azure Kubernetes Service)

• Cluster creation (az aks commands)
• Node pools
• Autoscaling
• ACR integration
• Networking (kubenet vs Azure CNI)
• Application Gateway Ingress Controller

👉 View AKS (Azure Kubernetes Service) Study Notes (PDF)

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Helm

• Chart structure
• values.yaml
• Install, upgrade, rollback commands
• Templating

👉 View Helm Study Notes (PDF)

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Terraform

• What is IaC
• Core commands (init, plan, apply, destroy)
• Providers, resources, variables, outputs
• Modules
• Remote state (Azure Blob Storage)
• Full AKS + VNet example

👉 View Terraform Study Notes (PDF)

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Ansible

• Inventory file
• Playbooks & tasks
• Handlers
• Roles
• Variables
• Ansible Vault (secrets encryption)
• Ad-hoc commands

👉 View Ansible Study Notes (PDF)

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Monitoring

• Prometheus (scraping, exporters, PromQL)
• Alertmanager
• Grafana dashboards
• Azure Monitor
• Container Insights
• Application Insights
• KQL (Kusto Query Language)
• Alerts & Action Groups

👉 View Monitoring Study Notes (PDF)

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Logging

• ELK Stack (Elasticsearch, Logstash, Kibana)
• Filebeat & Fluent Bit
• Kubernetes log collection architecture
• Structured JSON logging
• Azure Log Analytics

👉 View Logging Study Notes (PDF)

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Security / DevSecOps

• SAST & DAST
• Container image scanning (Trivy)
• Dependency scanning
• IaC scanning (Checkov, tfsec)
• Secrets detection
• Azure Key Vault integration

👉 View Logging Study Notes (PDF)

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Deployment Strategies

• Rolling deployment
• Blue-Green deployment
• Canary deployment
• Feature flags
• Recreate deployment 👉 View Logging Study Notes (PDF) — —

SRE (Site Reliability Engineering)

• SLI, SLO, SLA definitions
• Error budget
• Toil reduction
• Incident management process
• Blameless post-mortems
• On-call practices

👉 View Logging Study Notes (PDF)

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GitOps

• GitOps principles
• ArgoCD setup & sync policy
• Drift reconciliation
• Application manifest YAML

👉 View Logging Study Notes (PDF)

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Troubleshooting

• Kubernetes pod statuses (Pending, CrashLoopBackOff, OOMKilled, ImagePullBackOff)
• Pipeline failure debugging
• Linux performance (CPU, memory, disk, network)
• System logs analysis