Add FluxCD topic (GitOps / CI-CD) - #807
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Closes #801. - topics/fluxcd/README.md: overview, architecture diagram, install, basics, bootstrap/multi-tenancy/image-automation notes, cheatsheet - topics/fluxcd/basics/fluxcd_sync_demo.sh: installs Flux on a kind cluster and syncs stefanprodan/podinfo via GitRepository + Kustomization, no GitHub token or full `flux bootstrap` required. Verified end-to-end (fresh cluster and cluster-reuse paths), passes shellcheck. - topics/fluxcd/practice/README.md: 4 exercises (fork-and-sync, prune, break/observe/recover, ArgoCD comparison) - the break/recover scenario verified against real flux output. - Wired into mkdocs.yml nav, topics/index.md, README.md's topic table, and ROADMAP.md (moved FluxCD from Upcoming to Recently Added).
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Closes #801.
Summary
Adds a
topics/fluxcd/topic following the existing structure (seetopics/grafana/topics/trivyas the reference), and wires it into the repo's navigation.topics/fluxcd/README.md— What is FluxCD, controller architecture (ASCII diagram), install, a runnable basics walkthrough, a "Beyond the Basics" section coveringflux bootstrap/ multi-tenancy / image automation, and a cheatsheet — same six-section shape as the other recently-added topics.topics/fluxcd/basics/fluxcd_sync_demo.sh— installs Flux's controllers on a localkindcluster and syncs a real public repo (stefanprodan/podinfo) viaGitRepository+Kustomization. No GitHub token and no fullflux bootstrapneeded, per the issue's suggested approach.topics/fluxcd/practice/README.md— 4 exercises: fork-and-sync, watching--pruneremove a deleted resource, deliberately breaking a source and readingflux logsto recover it, and a compare-and-contrast writing prompt against the existing ArgoCD topic.mkdocs.ymlnav (under CI/CD, after ArgoCD),topics/index.md's card grid,README.md's topic table, and moved FluxCD from ROADMAP.md's "Upcoming" to "Recently Added".Test plan
fluxcd_sync_demo.shtwice end-to-end against a realkindcluster on this machine — once creating a fresh cluster, once reusing an existing one. Both times Flux fetchedpodinfo, applied its manifests, and the deployment reached2/2 Available.fluxoutput (bad branch →Ready: Falsewith a clear message;flux logs --level=errorsurfaces the exact error).shellcheck topics/fluxcd/basics/fluxcd_sync_demo.sh— clean.mkdocs build --strict— no new warnings introduced (the 5 pre-existing warnings onmainare unrelated: root/topics/README-vs-index.md conflicts and two pre-existing broken image links inargocd/elk, all present before this PR too).