Flux 1.16.0

This is a feature release with minor new features. New flags --manifest-generation and --read-only have been added to fluxctl install.

This release also incorporates a few fixes and enhacements. Namely:

• The pressure on the Kubernetes API server has been reduced when Flux operates in all namespaces.
• The error handling of manifest generation has been improved.

Additionally, the end-to-end testing infrastructure has been rewritten and numerous new end-to-end tests have been added.

Fixes

• Exclude the metrics APIs from resource discovery fluxcd/flux#2606
• Parse image refs in HelmReleases with >2 elements fluxcd/flux#2620
• Ignore timestamp labels during sorting and release of images fluxcd/flux#2594
• Security: Stop showing value of GIT_AUTHKEY in the fluxctl output fluxcd/flux#2549

Enhancements

• Improve experience with .flux.yaml files fluxcd/flux#{2565, 2603, 2604}
• Performance: Reduce pressure on Kubernetes' API server when Flux operates on all namespaces fluxcd/flux#{2520, 2539, 2622}
• Add manifest generation flag to fluctl install command fluxcd/flux#2583
• Add a read-only flag to fluxctl install command fluxcd/flux#2530
• Create Prometheus metric for flux manifest errors fluxcd/flux#2535

Maintenance and Documentation

• Rewrite end-to-end test infrastructure and add numerous new end-to-end tests
  fluxcd/flux#{2543, 2552, 2559, 2560, 2562, 2567, 2569, 2572, 2574, 2575, 2576, 2577, 2579, 2581, 2587, 2596, 2597, 2598}
• Bump alpine to 3.10 fluxcd/flux#2609
• Break code generation cycle fluxcd/flux#2525
• Fix indents in .flux.yaml example fluxcd/flux#2607
• Remove redundant return code fluxcd/flux#2585
• Remove replace directives in go.mod fluxcd/flux#2590
• Support unwrapping NotReadyError fluxcd/flux#2617
• Fix incorrect use of strings.Trim() fluxcd/flux#2527
• Add Cybrary, bimspot.io, Limejump and Yad2 as production users to README.md fluxcd/flux#{2592, 2499, 2503, 2509}
• Clarify use of pre-release versions by semver fluxcd/flux#2582
• Fix some steps in README.md to install flux by helm fluxcd/flux#2532
• Fix command in fluxyaml config example fluxcd/flux#2531
• Docs: fix namespace in kubectl logs example fluxcd/flux#2526
• Document sync-state and git-readonly daemon flags fluxcd/flux#2511
• Update FAQ advice on using ignore annotation fluxcd/flux#2502
• Fix typo in guide index docs fluxcd/flux#2506
• Fix link to flux-kustomize-example fluxcd/flux#2497

Thanks

Thanks to @2opremio, @at-ishikawa, @bboreham, @beautytiger, @carnott-snap, @denysvitali, @ducksecops, @erdii, @eriadam, @gsf, @hiddeco, @idobry, @jmymy, @mbellgb, @mosesyou, @mpashka, @palemtnrider, @sebikul, @squaremo, @srueg, @stefanprodan, @translucens, @vic3lord and @waseem-h for their contributions to this release!