Add makefile target to check markdown links

.gitignore

@@ -70,3 +70,6 @@ bazel-out
 bazel-testlogs
 # Ignore default apiserver config
 apiserver.local.config
+
+# Ignore awesome_bot markdown links check output
+ab-results-*.json

Makefile

@@ -594,3 +594,12 @@ bazel-push-gce-run: bazel-push
 .PHONY: bazel-push-aws-run
 bazel-push-aws-run: bazel-push
 	ssh -t ${TARGET} sudo SKIP_PACKAGE_UPDATE=1 /tmp/nodeup --conf=/var/cache/kubernetes-install/kube_env.yaml --v=8
+
+.PHONY: check-markdown-links
+check-markdown-links:
+	docker run -t -v $$PWD:/tmp \
+		-e LC_ALL=C.UTF-8 \
+		-e LANG=en_US.UTF-8 \
+		-e LANGUAGE=en_US.UTF-8 \
+		rubygem/awesome_bot --allow-dupe --allow-redirect \
+		$(shell find $$PWD -name "*.md" -mindepth 1 -printf '%P\n' | grep -v vendor | grep -v _vendor | grep -v Changelog.md)

docs/cluster_upgrades_and_migrations.md

@@ -204,7 +204,7 @@ Limitations:
 4. Verify the planned changes with `kops update cluster cluster.example.com`
 5. Create the cluster with `kops update cluster cluster.example.com --yes`
 6. Wait around for the cluster to fully come up and be available. `k get nodes` should return `(master + minions) = 15` available nodes.
-7. (Optional) Create the Dashboard with `kubectl create -f https://rawgit.com/kubernetes/dashboard/master/src/deploy/kubernetes-dashboard.yaml`
+7. (Optional) Create the Dashboard with `kubectl create -f https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/recommended/kubernetes-dashboard.yaml`
 8. Deploy the existing resource configuration to the new cluster.
 9. Confirm that pods on the new cluster are able to access remote resources.
     - For AWS-hosted services, add the generated `nodes.cluster.example.com` security group to the resources that may need it (i.e. ElastiCache, RDS, etc).

docs/development/api_updates.md

@@ -3,7 +3,7 @@
 Kops uses the Kubernetes API machinery.  It is well designed, and very powerful, but you have to
 jump through some hoops to use it.
 
-Recommended reading: [kubernetes API changes doc](https://github.com/kubernetes/kubernetes/blob/master/docs/devel/api_changes.md)
+Recommended reading: [kubernetes API changes doc](https://github.com/kubernetes/community/blob/master/contributors/devel/api_changes.md)
 
 The kops APIs live in [pkg/apis/kops](https://github.com/kubernetes/kops/tree/master/pkg/apis/kops), both in
 that directory directly (the unversioned API) and in the versioned subdirectories (`v1alpha1`, `v1alpha2`).