DevOps practices, CI/CD, and cloud computing tutorials
Kubernetes 1.31 is one of the more disruptive recent releases — removed in-tree volume plugins, AppArmor going GA, structured authentication maturing, and several long-deprecated APIs finally going away. This is a battle-tested upgrade guide for production clusters: what breaks, what to test on staging, and a safe step-by-step migration path that does not page you at 2 AM....
Implement GitOps with ArgoCD for declarative infrastructure management. Learn Git as single source of truth, automated deployment, sync strategies, and rollback procedures....
Week 3 of March 2026: database security vulnerabilities and fixes, Ansible community updates, free training resources, and infrastructure monitoring trends....
Week 2 of March 2026 IT news: critical container security advisories, Python 3.14 feature preview, DevOps salary survey results, and open-source project highlights....
Test DNS resolver performance with a free Python CLI tool. Compare resolver speeds, verify DNSSEC validation, audit resolv.conf, and diagnose DNS resolution issues....
Monitor NFS mount health with a free Python CLI tool. Detect stale mounts, measure latency, audit NFS exports, and run throughput tests — zero dependencies required....
Monitor PostgreSQL server health with Python. dargslan-postgres-health checks connections, table bloat, vacuum status, locks, replication lag, and long-running queries....
Monitor Redis server health with Python. dargslan-redis-health checks memory usage, RDB/AOF persistence, replication status, client connections, and provides alerts for common issues....
Monitor network bandwidth and interface statistics on Linux. dargslan-bandwidth-monitor reads /proc/net/dev to track RX/TX traffic, measure throughput, and detect interface errors....