devops-exercises
Linux, Jenkins, AWS, SRE, Prometheus, Docker, Python, Ansible, Git, Kubernetes, Terraform, OpenStack, SQL, NoSQL, Azure, GCP, DNS, Elastic, Network, Virtualization. DevOps Interview Questions
Learn to migrate monoliths to microservices using containerization and orchestration. Decompose domains, containerize services, and secure with Kubernetes, CI/CD, observability, and service mesh.
How Prometheus Uses Service Discovery to Dynamically Monitor Ephemeral Kubernetes ServicesLearn how Prometheus uses Kubernetes service discovery to automate monitoring of dynamic, ephemeral services. Track metrics without manual updates as containers scale or restart.
Core Principles of Chaos Engineering: A Practical Guide to Testing System ResilienceExplore the core principles of Chaos Engineering and learn how to test system resilience. This practical guide covers defining steady state hypothesizing continuity introducing failures observing deviations and automating exper...
How to Use Ansible for Automating EC2 Instances and RDS Databases: A Complete GuideAutomate AWS EC2 instances and RDS databases with Ansible. Use agentless architecture and cloud modules to provision and manage your infrastructure via YAML playbooks. Learn how now.
Terraform State Backends: How S3, Azure Blob, and GCS Impact Team Collaboration, Security, and PerformanceExplore Terraform state backends like S3 Azure Blob and GCS Understand their impact on team collaboration security and performance for efficient infrastructure management
Disaster Recovery Strategies for Stateful Applications on Kubernetes: Architectural Patterns and Best PracticesLearn Kubernetes disaster recovery strategies for stateful applications. Explore architectural patterns, persistent storage, backup tools, and replication for RTO/RPO success.
Kubernetes Services (ClusterIP, NodePort, LoadBalancer) vs Ingress Controllers: Exposing Applications ExternallyUnderstand Kubernetes Services (ClusterIP NodePort LoadBalancer) vs Ingress controllers for external application access. Learn their differences to choose the right external exposure method.
TLS/SSL Handshake Process: Critical Steps, Pitfalls, and Diagnosis MethodsMaster the TLS/SSL handshake! Explore critical steps, common pitfalls like version mismatches, and diagnostic tools such as openssl s_client to ensure secure connections.
AWS VPC Default Configuration Security Risks: 5 Critical Vulnerabilities and Mitigation StrategiesDiscover 5 critical security risks in default AWS VPC configurations, including internet exposure and public IPs. Learn effective mitigation strategies for robust cloud security.
How to Implement Sophisticated Network Policies in Kubernetes for Least-Privilege CommunicationMaster Kubernetes network policies for least-privilege communication. Learn to implement default deny and whitelist traffic using labels, CIDRs, and OPA Gatekeeper.
Prometheus Metric Collection Strategies: Comparing Pushgateway, Node Exporter, and cAdvisorCompare Prometheus metric collection strategies. Learn how Pushgateway, Node Exporter, and cAdvisor gather metrics for different applications, enabling effective monitoring.
How the Linux Kernel's CFS Scheduler and OOM Killer Impact Containerized ApplicationsUnderstand how the Linux CFS scheduler and OOM Killer affect containerized apps. Learn about cgroup tunables like cpu.shares and memory.limit_in_bytes for performance tuning and isolation.
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