Skaffold is a command-line tool from Google that automates the inner development loop for Kubernetes applications: it watches your source files for changes, rebuilds container images, re-runs tests, and redeploys to your cluster — all in a single continuous process with a single command. Instead of manually running docker build, docker push, and kubectl apply […]
Tekton is a Kubernetes-native open-source framework for building continuous integration and delivery (CI/CD) pipelines. Unlike Jenkins or GitLab CI, Tekton runs entirely as Kubernetes Custom Resource Definitions (CRDs), meaning every pipeline, task, and run is a Kubernetes object you manage with kubectl — no separate CI server to maintain. This cloud-native approach gives you full […]
Pulumi is a modern Infrastructure as Code platform that lets you define, deploy, and manage cloud resources using general-purpose programming languages — Python, TypeScript, Go, C#, and Java — instead of a domain-specific language like Terraform’s HCL. This means you get real loops, conditionals, functions, classes, and access to the full ecosystem of your chosen […]
Fluentd is an open-source data collector that unifies log aggregation across your infrastructure, enabling you to collect, parse, transform, and forward logs to multiple destinations from a single configuration file. Maintained by the Cloud Native Computing Foundation (CNCF), it has become the industry standard for centralized log management in cloud-native environments. The Treasure Data distribution, […]
Prometheus AlertManager is a standalone component of the Prometheus monitoring stack responsible for deduplicating, grouping, routing, and dispatching alerts to notification channels such as Slack, email, and PagerDuty. While Prometheus evaluates alerting rules and fires alerts, it is AlertManager that decides who gets notified, when, and how — preventing alert storms and on-call fatigue through […]
Harbor is an enterprise-grade open-source container registry that extends the basic Docker Registry with role-based access control, vulnerability scanning, image signing, and replication across multiple registries. While Docker’s official registry:2 image is suitable for simple use cases, Harbor is purpose-built for teams that need audit logs, project-level isolation, and automated security scanning before images reach […]
GNU Make is one of the oldest and most widely used build automation tools in the Unix ecosystem, yet it remains just as relevant today as it was when first released in 1976. Unlike language-specific build tools such as Maven, Cargo, or npm scripts, Make is completely language-agnostic — it works equally well for C […]
Drone CI is an open-source, container-native continuous integration and delivery platform that runs every pipeline step inside an isolated Docker container. It integrates natively with GitHub, Gitea, GitLab, and Bitbucket, making it a lightweight alternative to Jenkins for teams already working with containers. Drone’s configuration lives in a .drone.yml file committed alongside your code, keeping […]
Buildah is a daemonless, rootless command-line tool for building OCI-compliant container images — without requiring a running Docker daemon or root privileges. On RHEL 9, Buildah ships as a first-class tool alongside Podman, and the two integrate tightly: images built with Buildah appear immediately in Podman’s local image store. Buildah’s fine-grained API lets you build […]
HashiCorp Packer is an open-source tool for creating identical machine images for multiple platforms from a single configuration source. Rather than manually configuring servers after deployment, Packer bakes your configuration — packages, users, services, certificates — directly into the image at build time, embodying the immutable infrastructure pattern. The resulting AMIs, OVA files, or container […]
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