Running applications reliably: containers and Kubernetes, infrastructure as code, CI/CD, cloud costs, backups, and monitoring that catches problems early.
12 articles
Cloud & DevOps9 min read
What Helm charts are, how values and templates work, how to structure a chart for several environments, upgrade and rollback safely, keep secrets out of Git, test charts in CI, and decide between Helm and Kustomize.
Cloud & DevOps10 min read
Why teams move cloud setup from the console into Terraform, how to handle state safely, structure modules and environments, review plans in CI, bring existing resources under control, and where OpenTofu fits.
Cloud & DevOps9 min read
What the Certified Kubernetes Application Developer exam looks like, which topics carry the most weight, the kubectl habits that save time, a six-week study plan, and the mistakes that make prepared candidates fail.
Cloud & DevOps10 min read
How to plan backup and disaster recovery for a business application: setting RPO and RTO, the 3-2-1 rule, database backups and point-in-time recovery, protecting backups from ransomware, recovery strategies from backup-and-restore to multi-site, and testing restores.
Cloud & DevOps10 min read
What Docker solves for a development team, images and containers in plain terms, writing a good Dockerfile with multi-stage builds, Docker Compose for local development, security basics, running containers in production, and when to move to Kubernetes or a managed container service.
Cloud & DevOps9 min read
The real differences between shared hosting and a VPS: resources, access, what you can run, who handles security and backups, signs you have outgrown shared hosting, a basic VPS hardening checklist, and how to migrate without downtime.
Cloud & DevOps10 min read
How to store uploads, documents, and media in object storage such as Amazon S3: when it beats a server disk, private buckets and presigned URLs, direct uploads from the browser, CloudFront, storage classes and lifecycle rules, backups, costs, and S3-compatible alternatives.
Cloud & DevOps10 min read
Where AWS bills usually leak and how to fix them: cost visibility with tags and budgets, right-sizing, Savings Plans and Spot, Graviton, gp3 volumes, NAT Gateway and data transfer, idle resources, log retention, and scheduling non-production environments.
Cloud & DevOps9 min read
What Kubernetes solves, what it costs to operate, simpler alternatives such as managed containers, signs that a team is ready, and the practices that make a first cluster manageable.
Cloud & DevOps10 min read
A practical CI/CD setup with GitHub Actions deploying to AWS: pipeline stages, building one artifact for every environment, OIDC instead of access keys, approvals, database migrations, and rollback.
Cloud & DevOps8 min read
Learn how to set up Uptime Kuma for reliable uptime monitoring. This guide covers deployment, monitor types, retries, notifications, status pages, and practical maintenance.
Cloud & DevOps9 min read
Setting up Zabbix is only the first step. A monitoring system becomes useful when alerts are relevant, infrastructure is properly covered, and the team knows how to respond. This guide covers Zabbix architecture, server monitoring, trigger design, alerting, and an implementation approach that can scale with your infrastructure.
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