added node cordon, uncordon, recycle.

################################################################################

## kube-cluster.mk

# Makefile targets useful for kube cluster ops

################################################################################

# ifndef GCP_ENVIRONMENT

# 	missing_vars := ${missing_vars} GCP_ENVIRONMENT

# endif

ifndef CLUSTER_NAME

	missing_vars := ${missing_vars} CLUSTER_NAME

endif

# ifndef GKE_CLUSTER_ZONE

# 	missing_vars := ${missing_vars} GKE_CLUSTER_ZONE

# endif

ifndef TILLER_IMAGE

	TILLER_IMAGE := gcr.io/kubernetes-helm/tiller:v2.7.2

endif

.PHONY: cordon-node

cordon-node: NODES = $(shell kubectl get node -o json  | jq -r '.items[].metadata.name')

cordon-node: ## Disable scheduling on a node

	@kubectl get nodes 

	@for i in ${NODES}; do \

		echo "" ; \

		echo "Cordon $$i?" ; \

		$(MAKE) confirm > /dev/null 2>&1 || continue ; \

		kubectl cordon $$i ; \

		kubectl drain $$i --ignore-daemonsets --delete-local-data ; \

	done

.PHONY: uncordon-node

uncordon-node: NODES = $(shell kubectl get node -o json  | jq -r '.items[].metadata.name')

uncordon-node: ## Enable scheduling on a node

	@kubectl get nodes 

	@for i in ${NODES}; do \

		echo "" ; \

		echo "Uncordon $$i?" ; \

		$(MAKE) confirm > /dev/null 2>&1 || continue ; \

		kubectl uncordon $$i ; \

	done

.PHONY: cluster-upgrade-nodes

recycle-node: NODES = $(shell kubectl get node -o json  | jq -r '.items[].metadata.name')

recycle-node: ## Replace node with a new instance

	@kubectl get nodes

	@for i in ${NODES}; do \

		echo "" ; \

		echo "Recycle $$i?" ; \

		$(MAKE) confirm > /dev/null 2>&1 || continue ; \

		external_id=`kubectl describe node $$i |grep ExternalID | awk '{print $$2}'` ; \

		aws autoscaling terminate-instance-in-auto-scaling-group  \

		  --instance-id $$external_id --no-should-decrement-desired-capacity ; \

	done

.PHONY: get-images

get-images: config-kube ## List all images running in the cluster

    @kubectl get pods --all-namespaces -o jsonpath="{..image}" | tr -s '[[:space:]]' '\n' | sort | uniq -c

.PHONY: tiller

tiller: KUBECONFIG = $$HOME/.kube/${CLUSTER_NAME}

tiller: ## Instal Helm tiller controller

	helm init --upgrade && helm version

.PHONY: delete-tiller

delete-tiller: ## Uninstall tiller

	kubectl delete deployment tiller-deploy -n kube-system --ignore-not-found

.PHONY: tag-nodes

tag-nodes: config-kube ## tag the cluster nodes for NAT

	tag-nodes-for-nat.sh ${GCP_NAT_TAGS}

.PHONY: check-images ## check all running images

check-images: config-kube

	kube-images-report.sh