Rename references from master to main branch

Author: mrueg

.github/ISSUE_TEMPLATE/bug_report.md

@@ -9,7 +9,7 @@ assignees: ''
 
 <!-- Please use this template while reporting a bug and provide as much info as possible. Not doing so may result in your bug not being addressed in a timely manner. Thanks!
 
-If the matter is security related, please disclose it privately see https://github.com/kubernetes/kube-state-metrics/blob/master/SECURITY.md
+If the matter is security related, please disclose it privately see https://github.com/kubernetes/kube-state-metrics/blob/main/SECURITY.md
 -->
 
 **What happened**:

.github/workflows/ci.yml

@@ -3,14 +3,14 @@ name: continuous-integration
 on:
   push:
     branches:
-    - master
+    - main
     - release*
     tags:
     - v1.*
     - v2.*
   pull_request:
     branches:
-    - master
+    - main
     - release*
 
 permissions:

Makefile

@@ -78,7 +78,7 @@ shellcheck:
 # the two.
 test-benchmark-compare:
 	@git fetch
-	./tests/compare_benchmarks.sh master
+	./tests/compare_benchmarks.sh main
 	./tests/compare_benchmarks.sh ${LATEST_RELEASE_BRANCH}
 
 all: all-container

README.md

@@ -77,7 +77,7 @@ Generally, it is recommended to use the latest release of kube-state-metrics. If
 | **v2.5.0**         | v1.24                        |
 | **v2.6.0**         | v1.24                        |
 | **v2.7.0**         | v1.25                        |
-| **master**         | v1.25                        |
+| **main**           | v1.25                        |
 
 
 #### Resource group version compatibility
@@ -155,7 +155,7 @@ http_request_duration_seconds_count{handler="metrics",method="get"} 30
 
 kube-state-metrics also exposes build and configuration metrics:
 ```
-kube_state_metrics_build_info{branch="master",goversion="go1.15.3",revision="6c9d775d",version="v2.0.0-beta"} 1
+kube_state_metrics_build_info{branch="main",goversion="go1.15.3",revision="6c9d775d",version="v2.0.0-beta"} 1
 kube_state_metrics_shard_ordinal{shard_ordinal="0"} 0
 kube_state_metrics_total_shards 1
 ```

RELEASE.md

@@ -6,9 +6,9 @@ We use [Semantic Versioning](http://semver.org/).
 
 We maintain a separate branch for each minor release, named `release-<major>.<minor>`, e.g. `release-1.1`, `release-2.0`.
 
-The usual flow is to merge new features and changes into the master branch and to merge bug fixes into the latest release branch. Bug fixes are then merged into master from the latest release branch. The master branch should always contain all commits from the latest release branch.
+The usual flow is to merge new features and changes into the main branch and to merge bug fixes into the latest release branch. Bug fixes are then merged into main from the latest release branch. The main branch should always contain all commits from the latest release branch.
 
-If a bug fix got accidentally merged into master, cherry-pick commits have to be created in the latest release branch, which then have to be merged back into master. Try to avoid that situation.
+If a bug fix got accidentally merged into main, cherry-pick commits have to be created in the latest release branch, which then have to be merged back into main. Try to avoid that situation.
 
 Maintaining the release branches for older minor releases happens on a best effort basis.
 
@@ -34,7 +34,7 @@ Maintaining the release branches for older minor releases happens on a best effo
 * Create a new **pre-release** on github
 * New images are automatically built and pushed to `gcr.io/k8s-staging-kube-state-metrics/kube-state-metrics`
 * Promote image by sending a PR to [kubernetes/k8s.io](https://github.com/kubernetes/k8s.io) repository. Follow the [example PR](https://github.com/kubernetes/k8s.io/pull/3798). Use [kpromo pr](https://github.com/kubernetes-sigs/promo-tools/blob/main/docs/promotion-pull-requests.md) to update the manifest files in this repository, e.g. `kpromo pr --fork=$YOURNAME -i --project=kube-state-metrics -t=v2.5.0`
-* Create a PR to merge the changes of this release back into the master branch.
+* Create a PR to merge the changes of this release back into the main branch.
 * Once the PR to promote the image is merged, mark the pre-release as a regular release.
 
 ## Stable release

docs/developer/guide.md

@@ -11,12 +11,12 @@ Any contribution to improving this documentation will be appreciated.
 
 The following steps are needed to introduce a new resource and its respective resource metrics.
 
-- Reference your new resource(s) to the [docs/README.md](https://github.com/kubernetes/kube-state-metrics/blob/master/docs/README.md#exposed-metrics).
-- Reference your new resource(s) in the [docs/cli-arguments.md](https://github.com/kubernetes/kube-state-metrics/blob/master/docs/cli-arguments.md#available-options) as part of the `--resources` flag.
-- Create a new `<name-of-resource>.md` in the [docs](https://github.com/kubernetes/kube-state-metrics/tree/master/docs) directory to provide documentation on the resource(s) and metrics you implemented. Follow the formatting of all other resources.
-- Add the resource(s) you are representing to the [jsonnet/kube-state-metrics/kube-state-metrics.libsonnet](https://github.com/kubernetes/kube-state-metrics/blob/master/jsonnet/kube-state-metrics/kube-state-metrics.libsonnet) under the appropriate `apiGroup` using the `verbs`: `list` and `watch`.
-- Run `make examples/standard`, this should re-generate [examples/standard/cluster-role.yaml](https://github.com/kubernetes/kube-state-metrics/blob/master/examples/standard/cluster-role.yaml) with the resource(s) added to [jsonnet/kube-state-metrics/kube-state-metrics.libsonnet](https://github.com/kubernetes/kube-state-metrics/blob/master/jsonnet/kube-state-metrics/kube-state-metrics.libsonnet).
-- Reference and add build functions for the new resource(s) in [internal/store/builder.go](https://github.com/kubernetes/kube-state-metrics/blob/master/internal/store/builder.go).
-- Reference the new resource in [pkg/options/resource.go](https://github.com/kubernetes/kube-state-metrics/blob/master/pkg/options/resource.go).
-- Add a sample Kubernetes manifest to be used by tests in the [tests/manifests/](https://github.com/kubernetes/kube-state-metrics/tree/master/tests/manifests) directory.
-- Lastly, and most importantly, actually implement your new resource(s) and its test binary in [internal/store](https://github.com/kubernetes/kube-state-metrics/tree/master/internal/store). Follow the formatting and structure of other resources.
+- Reference your new resource(s) to the [docs/README.md](https://github.com/kubernetes/kube-state-metrics/blob/main/docs/README.md#exposed-metrics).
+- Reference your new resource(s) in the [docs/cli-arguments.md](https://github.com/kubernetes/kube-state-metrics/blob/main/docs/cli-arguments.md#available-options) as part of the `--resources` flag.
+- Create a new `<name-of-resource>.md` in the [docs](https://github.com/kubernetes/kube-state-metrics/tree/main/docs) directory to provide documentation on the resource(s) and metrics you implemented. Follow the formatting of all other resources.
+- Add the resource(s) you are representing to the [jsonnet/kube-state-metrics/kube-state-metrics.libsonnet](https://github.com/kubernetes/kube-state-metrics/blob/main/jsonnet/kube-state-metrics/kube-state-metrics.libsonnet) under the appropriate `apiGroup` using the `verbs`: `list` and `watch`.
+- Run `make examples/standard`, this should re-generate [examples/standard/cluster-role.yaml](https://github.com/kubernetes/kube-state-metrics/blob/main/examples/standard/cluster-role.yaml) with the resource(s) added to [jsonnet/kube-state-metrics/kube-state-metrics.libsonnet](https://github.com/kubernetes/kube-state-metrics/blob/main/jsonnet/kube-state-metrics/kube-state-metrics.libsonnet).
+- Reference and add build functions for the new resource(s) in [internal/store/builder.go](https://github.com/kubernetes/kube-state-metrics/blob/main/internal/store/builder.go).
+- Reference the new resource in [pkg/options/resource.go](https://github.com/kubernetes/kube-state-metrics/blob/main/pkg/options/resource.go).
+- Add a sample Kubernetes manifest to be used by tests in the [tests/manifests/](https://github.com/kubernetes/kube-state-metrics/tree/main/tests/manifests) directory.
+- Lastly, and most importantly, actually implement your new resource(s) and its test binary in [internal/store](https://github.com/kubernetes/kube-state-metrics/tree/main/internal/store). Follow the formatting and structure of other resources.