Remove node termination handler addon

cluster/gce/addons/node-termination-handler/README

@@ -1,4 +0,0 @@
-# GCE Node Termination Handler
-
-This addon deploys [GCE Node Termination Handler](https://github.com/GoogleCloudPlatform/k8s-node-termination-handler) on to kubernetes clusters on GCP.
-It is meant to help translate GCE VM termination notifications into kubernetes graceful terminations.

cluster/gce/addons/node-termination-handler/daemonset.yaml

@@ -1,74 +0,0 @@
----
-apiVersion: apps/v1
-kind: DaemonSet
-metadata:
-  labels:
-    addonmanager.kubernetes.io/mode: Reconcile
-    k8s-app: node-termination-handler
-  namespace: kube-system
-  name: node-termination-handler
-spec:
-  selector:
-    matchLabels:
-      k8s-app: node-termination-handler
-  updateStrategy:
-    type: RollingUpdate
-  template:
-    metadata:
-      labels:
-        k8s-app: node-termination-handler
-    spec:
-      priorityClassName: system-node-critical
-      # Necessary to reboot node
-      hostPID: true
-      affinity:
-        nodeAffinity:
-          # Restrict to GPU nodes or preemptible nodes
-          requiredDuringSchedulingIgnoredDuringExecution:
-            nodeSelectorTerms:
-              - matchExpressions:
-                  - key: cloud.google.com/gke-accelerator
-                    operator: Exists
-              - matchExpressions:
-                  - key: cloud.google.com/gke-preemptible
-                    operator: Exists
-      volumes:
-        - name: klet-service-account
-          hostPath:
-            path: /var/lib/kubelet
-        - name: klet-ca-crt
-          hostPath:
-            path: /etc/srv/kubernetes
-      tolerations:
-        # Run regardless of any existing taints.
-        - effect: NoSchedule
-          operator: Exists
-        - effect: NoExecute
-          operator: Exists
-      containers:
-        - image: k8s.gcr.io/gke-node-termination-handler@sha256:aca12d17b222dfed755e28a44d92721e477915fb73211d0a0f8925a1fa847cca
-          name: node-termination-handler
-          command: ["./node-termination-handler"]
-          args: ["--logtostderr", "--exclude-pods=$(POD_NAME):$(POD_NAMESPACE)", "-v=10", "--kubeconfig=/var/lib/kubelet/kubeconfig", "--taint=cloud.google.com/impending-node-termination::NoSchedule"]
-          securityContext:
-            capabilities:
-              # Necessary to reboot node
-              add: ["SYS_BOOT"]
-          env:
-            - name: POD_NAME
-              valueFrom:
-                fieldRef:
-                  fieldPath: metadata.name
-            - name: POD_NAMESPACE
-              valueFrom:
-                fieldRef:
-                  fieldPath: metadata.namespace
-          resources:
-            limits:
-              cpu: 50m
-              memory: 30Mi
-          volumeMounts:
-            - name: klet-service-account
-              mountPath: /var/lib/kubelet
-            - name: klet-ca-crt
-              mountPath: /etc/srv/kubernetes

cluster/gce/config-default.sh

@@ -513,14 +513,6 @@ CONCURRENT_SERVICE_SYNCS="${CONCURRENT_SERVICE_SYNCS:-}"
 
 export SERVICEACCOUNT_ISSUER="https://kubernetes.io/${CLUSTER_NAME}"
 
-# Optional: Enable Node termination Handler for Preemptible and GPU VMs.
-# https://github.com/GoogleCloudPlatform/k8s-node-termination-handler
-ENABLE_NODE_TERMINATION_HANDLER="${ENABLE_NODE_TERMINATION_HANDLER:-false}"
-# Override default Node Termination Handler Image
-if [[ "${NODE_TERMINATION_HANDLER_IMAGE:-}" ]]; then
-  PROVIDER_VARS="${PROVIDER_VARS:-} NODE_TERMINATION_HANDLER_IMAGE"
-fi
-
 # Taint Windows nodes by default to prevent Linux workloads from being
 # scheduled onto them.
 WINDOWS_NODE_TAINTS="${WINDOWS_NODE_TAINTS:-node.kubernetes.io/os=win1809:NoSchedule}"

cluster/gce/config-test.sh

@@ -565,14 +565,6 @@ CONCURRENT_SERVICE_SYNCS=${CONCURRENT_SERVICE_SYNCS:-}
 # to resolve the partially qualified name.
 export SERVICEACCOUNT_ISSUER='https://kubernetes.default.svc.cluster.local'
 
-# Optional: Enable Node termination Handler for Preemptible and GPU VMs.
-# https://github.com/GoogleCloudPlatform/k8s-node-termination-handler
-ENABLE_NODE_TERMINATION_HANDLER=${ENABLE_NODE_TERMINATION_HANDLER:-false}
-# Override default Node Termination Handler Image
-if [[ "${NODE_TERMINATION_HANDLER_IMAGE:-}" ]]; then
-  PROVIDER_VARS="${PROVIDER_VARS:-} NODE_TERMINATION_HANDLER_IMAGE"
-fi
-
 # Taint Windows nodes by default to prevent Linux workloads from being
 # scheduled onto them.
 WINDOWS_NODE_TAINTS=${WINDOWS_NODE_TAINTS:-node.kubernetes.io/os=win1809:NoSchedule}

cluster/gce/gci/configure-helper.sh

@@ -2287,12 +2287,6 @@ function setup-addon-manifests {
       copy-manifests "${psp_dir}" "${dst_dir}"
     fi
   fi
-  if [[ "${ENABLE_NODE_TERMINATION_HANDLER:-}" == "true" ]]; then
-      local -r nth_dir="${src_dir}/${3:-$2}/node-termination-handler"
-      if [[ -d "${nth_dir}" ]]; then
-          copy-manifests "${nth_dir}" "${dst_dir}"
-      fi
-  fi
 }
 
 # A function that downloads extra addons from a URL and puts them in the GCI
@@ -2708,10 +2702,6 @@ EOF
   if [[ "${ENABLE_NVIDIA_GPU_DEVICE_PLUGIN:-}" == "true" ]]; then
     setup-addon-manifests "addons" "device-plugins/nvidia-gpu"
   fi
-  if [[ "${ENABLE_NODE_TERMINATION_HANDLER:-}" == "true" ]]; then
-      setup-addon-manifests "addons" "node-termination-handler"
-      setup-node-termination-handler-manifest ''
-  fi
   # Setting up the konnectivity-agent daemonset
   if [[ "${RUN_KONNECTIVITY_PODS:-false}" == "true" ]]; then
     setup-addon-manifests "addons" "konnectivity-agent"
@@ -2820,13 +2810,6 @@ EOF
   cp "${src_file}" /etc/kubernetes/manifests
 }
 
-function setup-node-termination-handler-manifest {
-    local -r nth_manifest="/etc/kubernetes/$1/$2/daemonset.yaml"
-    if [[ -n "${NODE_TERMINATION_HANDLER_IMAGE}" ]]; then
-        sed -i "s|image:.*|image: ${NODE_TERMINATION_HANDLER_IMAGE}|" "${nth_manifest}"
-    fi
-}
-
 function setup-konnectivity-agent-manifest {
     local -r manifest="/etc/kubernetes/addons/konnectivity-agent/konnectivity-agent-ds.yaml"
     sed -i "s|__APISERVER_IP__|${KUBERNETES_MASTER_NAME}|g" "${manifest}"

cluster/gce/util.sh

@@ -1246,7 +1246,6 @@ VOLUME_PLUGIN_DIR: $(yaml-quote "${VOLUME_PLUGIN_DIR}")
 KUBELET_ARGS: $(yaml-quote "${KUBELET_ARGS}")
 REQUIRE_METADATA_KUBELET_CONFIG_FILE: $(yaml-quote true)
 ENABLE_NETD: $(yaml-quote "${ENABLE_NETD:-false}")
-ENABLE_NODE_TERMINATION_HANDLER: $(yaml-quote "${ENABLE_NODE_TERMINATION_HANDLER:-false}")
 CUSTOM_NETD_YAML: |
 ${CUSTOM_NETD_YAML//\'/\'\'}
 CUSTOM_CALICO_NODE_DAEMONSET_YAML: |