Merge pull request kubernetes#82062 from k-toyoda-pi/fix_shellcheck_config-default

Fix shellcheck failure in cluster/gce/config-default.sh

Author: k8s-ci-robot

cluster/gce/config-default.sh

@@ -21,18 +21,18 @@ source "${KUBE_ROOT}/cluster/gce/config-common.sh"
 
 # Specifying KUBE_GCE_API_ENDPOINT will override the default GCE Compute API endpoint (https://www.googleapis.com/compute/v1/).
 # This endpoint has to be pointing to v1 api. For example, https://www.googleapis.com/compute/staging_v1/
-GCE_API_ENDPOINT=${KUBE_GCE_API_ENDPOINT:-}
-GCLOUD=gcloud
+export GCE_API_ENDPOINT=${KUBE_GCE_API_ENDPOINT:-}
+export GCLOUD=gcloud
 ZONE=${KUBE_GCE_ZONE:-us-central1-b}
-REGION=${ZONE%-*}
+export REGION=${ZONE%-*}
 RELEASE_REGION_FALLBACK=${RELEASE_REGION_FALLBACK:-false}
 REGIONAL_KUBE_ADDONS=${REGIONAL_KUBE_ADDONS:-true}
 NODE_SIZE=${NODE_SIZE:-n1-standard-2}
 NUM_NODES=${NUM_NODES:-3}
 NUM_WINDOWS_NODES=${NUM_WINDOWS_NODES:-0}
 MASTER_SIZE=${MASTER_SIZE:-n1-standard-$(get-master-size)}
 MASTER_MIN_CPU_ARCHITECTURE=${MASTER_MIN_CPU_ARCHITECTURE:-} # To allow choosing better architectures.
-MASTER_DISK_TYPE=pd-ssd
+export MASTER_DISK_TYPE=pd-ssd
 MASTER_DISK_SIZE=${MASTER_DISK_SIZE:-$(get-master-disk-size)}
 MASTER_ROOT_DISK_SIZE=${MASTER_ROOT_DISK_SIZE:-$(get-master-root-disk-size)}
 NODE_DISK_TYPE=${NODE_DISK_TYPE:-pd-standard}
@@ -53,7 +53,7 @@ NODE_LOCAL_SSDS_EXT=${NODE_LOCAL_SSDS_EXT:-}
 # Accelerators to be attached to each node. Format "type=<accelerator-type>,count=<accelerator-count>"
 # More information on available GPUs here - https://cloud.google.com/compute/docs/gpus/
 NODE_ACCELERATORS=${NODE_ACCELERATORS:-""}
-REGISTER_MASTER_KUBELET=${REGISTER_MASTER:-true}
+export REGISTER_MASTER_KUBELET=${REGISTER_MASTER:-true}
 PREEMPTIBLE_NODE=${PREEMPTIBLE_NODE:-false}
 PREEMPTIBLE_MASTER=${PREEMPTIBLE_MASTER:-false}
 KUBE_DELETE_NODES=${KUBE_DELETE_NODES:-true}
@@ -84,34 +84,34 @@ fi
 # Also please update corresponding image for node e2e at:
 # https://github.com/kubernetes/kubernetes/blob/master/test/e2e_node/jenkins/image-config.yaml
 GCI_VERSION=${KUBE_GCI_VERSION:-cos-81-12871-59-0}
-MASTER_IMAGE=${KUBE_GCE_MASTER_IMAGE:-}
-MASTER_IMAGE_PROJECT=${KUBE_GCE_MASTER_PROJECT:-cos-cloud}
-NODE_IMAGE=${KUBE_GCE_NODE_IMAGE:-${GCI_VERSION}}
-NODE_IMAGE_PROJECT=${KUBE_GCE_NODE_PROJECT:-cos-cloud}
-NODE_SERVICE_ACCOUNT=${KUBE_GCE_NODE_SERVICE_ACCOUNT:-default}
+export MASTER_IMAGE=${KUBE_GCE_MASTER_IMAGE:-}
+export MASTER_IMAGE_PROJECT=${KUBE_GCE_MASTER_PROJECT:-cos-cloud}
+export NODE_IMAGE=${KUBE_GCE_NODE_IMAGE:-${GCI_VERSION}}
+export NODE_IMAGE_PROJECT=${KUBE_GCE_NODE_PROJECT:-cos-cloud}
+export NODE_SERVICE_ACCOUNT=${KUBE_GCE_NODE_SERVICE_ACCOUNT:-default}
 
 # KUBELET_TEST_ARGS are extra arguments passed to kubelet.
-KUBELET_TEST_ARGS=${KUBE_KUBELET_EXTRA_ARGS:-}
+export KUBELET_TEST_ARGS=${KUBE_KUBELET_EXTRA_ARGS:-}
 CONTAINER_RUNTIME=${KUBE_CONTAINER_RUNTIME:-docker}
-CONTAINER_RUNTIME_ENDPOINT=${KUBE_CONTAINER_RUNTIME_ENDPOINT:-}
+export CONTAINER_RUNTIME_ENDPOINT=${KUBE_CONTAINER_RUNTIME_ENDPOINT:-}
 CONTAINER_RUNTIME_NAME=${KUBE_CONTAINER_RUNTIME_NAME:-}
 LOAD_IMAGE_COMMAND=${KUBE_LOAD_IMAGE_COMMAND:-}
 if [[ "${CONTAINER_RUNTIME}" == "containerd" ]]; then
-  CONTAINER_RUNTIME_NAME=${KUBE_CONTAINER_RUNTIME_NAME:-containerd}
-  LOAD_IMAGE_COMMAND=${KUBE_LOAD_IMAGE_COMMAND:-ctr -n=k8s.io images import}
+export CONTAINER_RUNTIME_NAME=${KUBE_CONTAINER_RUNTIME_NAME:-containerd}
+export LOAD_IMAGE_COMMAND=${KUBE_LOAD_IMAGE_COMMAND:-ctr -n=k8s.io images import}
 fi
 
 # Ability to inject custom versions (Ubuntu OS images ONLY)
 # if KUBE_UBUNTU_INSTALL_CONTAINERD_VERSION or KUBE_UBUNTU_INSTALL_RUNC_VERSION
 # is set to empty then we do not override the version(s) and just
 # use whatever is in the default installation of containerd package
-UBUNTU_INSTALL_CONTAINERD_VERSION=${KUBE_UBUNTU_INSTALL_CONTAINERD_VERSION:-}
-UBUNTU_INSTALL_RUNC_VERSION=${KUBE_UBUNTU_INSTALL_RUNC_VERSION:-}
+export UBUNTU_INSTALL_CONTAINERD_VERSION=${KUBE_UBUNTU_INSTALL_CONTAINERD_VERSION:-}
+export UBUNTU_INSTALL_RUNC_VERSION=${KUBE_UBUNTU_INSTALL_RUNC_VERSION:-}
 
 # MASTER_EXTRA_METADATA is the extra instance metadata on master instance separated by commas.
-MASTER_EXTRA_METADATA=${KUBE_MASTER_EXTRA_METADATA:-${KUBE_EXTRA_METADATA:-}}
+export MASTER_EXTRA_METADATA=${KUBE_MASTER_EXTRA_METADATA:-${KUBE_EXTRA_METADATA:-}}
 # MASTER_EXTRA_METADATA is the extra instance metadata on node instance separated by commas.
-NODE_EXTRA_METADATA=${KUBE_NODE_EXTRA_METADATA:-${KUBE_EXTRA_METADATA:-}}
+export NODE_EXTRA_METADATA=${KUBE_NODE_EXTRA_METADATA:-${KUBE_EXTRA_METADATA:-}}
 
 NETWORK=${KUBE_GCE_NETWORK:-default}
 # Enable network deletion by default (for kube-down), unless we're using 'default' network.
@@ -126,16 +126,17 @@ fi
 INSTANCE_PREFIX="${KUBE_GCE_INSTANCE_PREFIX:-kubernetes}"
 CLUSTER_NAME="${CLUSTER_NAME:-${INSTANCE_PREFIX}}"
 MASTER_NAME="${INSTANCE_PREFIX}-master"
-AGGREGATOR_MASTER_NAME="${INSTANCE_PREFIX}-aggregator"
-INITIAL_ETCD_CLUSTER="${MASTER_NAME}"
-MASTER_TAG="${INSTANCE_PREFIX}-master"
-NODE_TAG="${INSTANCE_PREFIX}-minion"
+export AGGREGATOR_MASTER_NAME="${INSTANCE_PREFIX}-aggregator"
+export INITIAL_ETCD_CLUSTER="${MASTER_NAME}"
+export MASTER_TAG="${INSTANCE_PREFIX}-master"
+export NODE_TAG="${INSTANCE_PREFIX}-minion"
 
 CLUSTER_IP_RANGE="${CLUSTER_IP_RANGE:-$(get-cluster-ip-range)}"
 MASTER_IP_RANGE="${MASTER_IP_RANGE:-10.246.0.0/24}"
 # NODE_IP_RANGE is used when ENABLE_IP_ALIASES=true or CREATE_CUSTOM_NETWORK=true.
 # It is the primary range in the subnet and is the range used for node instance IPs.
 NODE_IP_RANGE="$(get-node-ip-range)"
+export NODE_IP_RANGE
 
 # NOTE: Avoid giving nodes empty scopes, because kubelet needs a service account
 # in order to initialize properly.
@@ -147,27 +148,27 @@ EXTRA_DOCKER_OPTS="${EXTRA_DOCKER_OPTS:-}"
 VOLUME_PLUGIN_DIR="${VOLUME_PLUGIN_DIR:-/home/kubernetes/flexvolume}"
 
 SERVICE_CLUSTER_IP_RANGE="${SERVICE_CLUSTER_IP_RANGE:-10.0.0.0/16}"  # formerly PORTAL_NET
-ALLOCATE_NODE_CIDRS=true
+export ALLOCATE_NODE_CIDRS=true
 
 # When set to true, Docker Cache is enabled by default as part of the cluster bring up.
-ENABLE_DOCKER_REGISTRY_CACHE=true
+export ENABLE_DOCKER_REGISTRY_CACHE=true
 
 # Optional: Deploy a L7 loadbalancer controller to fulfill Ingress requests:
 #   glbc           - CE L7 Load Balancer Controller
-ENABLE_L7_LOADBALANCING="${KUBE_ENABLE_L7_LOADBALANCING:-glbc}"
+export ENABLE_L7_LOADBALANCING="${KUBE_ENABLE_L7_LOADBALANCING:-glbc}"
 
 # Optional: Enable Metrics Server. Metrics Server should be enable everywhere,
 # since it's a critical component, but in the first release we need a way to disable
 # this in case of stability issues.
 # TODO(piosz) remove this option once Metrics Server became a stable thing.
-ENABLE_METRICS_SERVER="${KUBE_ENABLE_METRICS_SERVER:-true}"
+export ENABLE_METRICS_SERVER="${KUBE_ENABLE_METRICS_SERVER:-true}"
 
 # Optional: Metadata agent to setup as part of the cluster bring up:
 #   none        - No metadata agent
 #   stackdriver - Stackdriver metadata agent
 # Metadata agent is a daemon set that provides metadata of kubernetes objects
 # running on the same node for exporting metrics and logs.
-ENABLE_METADATA_AGENT="${KUBE_ENABLE_METADATA_AGENT:-none}"
+export ENABLE_METADATA_AGENT="${KUBE_ENABLE_METADATA_AGENT:-none}"
 
 # One special node out of NUM_NODES would be created of this type if specified.
 # Useful for scheduling heapster in large clusters with nodes of small size.
@@ -180,7 +181,7 @@ HEAPSTER_MACHINE_TYPE="${HEAPSTER_MACHINE_TYPE:-}"
 NUM_ADDITIONAL_NODES="${NUM_ADDITIONAL_NODES:-}"
 ADDITIONAL_MACHINE_TYPE="${ADDITIONAL_MACHINE_TYPE:-}"
 
-MASTER_NODE_LABELS="${KUBE_MASTER_NODE_LABELS:-}"
+export MASTER_NODE_LABELS="${KUBE_MASTER_NODE_LABELS:-}"
 # NON_MASTER_NODE_LABELS are labels will only be applied on non-master nodes.
 NON_MASTER_NODE_LABELS="${KUBE_NON_MASTER_NODE_LABELS:-}"
 WINDOWS_NON_MASTER_NODE_LABELS="${WINDOWS_NON_MASTER_NODE_LABELS:-}"
@@ -202,9 +203,9 @@ fi
 
 # Optional: Enable netd.
 ENABLE_NETD="${KUBE_ENABLE_NETD:-false}"
-CUSTOM_NETD_YAML="${KUBE_CUSTOM_NETD_YAML:-}"
-CUSTOM_CALICO_NODE_DAEMONSET_YAML="${KUBE_CUSTOM_CALICO_NODE_DAEMONSET_YAML:-}"
-CUSTOM_TYPHA_DEPLOYMENT_YAML="${KUBE_CUSTOM_TYPHA_DEPLOYMENT_YAML:-}"
+export CUSTOM_NETD_YAML="${KUBE_CUSTOM_NETD_YAML:-}"
+export CUSTOM_CALICO_NODE_DAEMONSET_YAML="${KUBE_CUSTOM_CALICO_NODE_DAEMONSET_YAML:-}"
+export CUSTOM_TYPHA_DEPLOYMENT_YAML="${KUBE_CUSTOM_TYPHA_DEPLOYMENT_YAML:-}"
 
 # To avoid running netd on a node that is not configured appropriately,
 # label each Node so that the DaemonSet can run the Pods only on ready Nodes.
@@ -213,8 +214,8 @@ if [[ ${ENABLE_NETD:-} == "true" ]]; then
 	NON_MASTER_NODE_LABELS="${NON_MASTER_NODE_LABELS:+${NON_MASTER_NODE_LABELS},}cloud.google.com/gke-netd-ready=true"
 fi
 
-ENABLE_NODELOCAL_DNS="${KUBE_ENABLE_NODELOCAL_DNS:-false}"
-LOCAL_DNS_IP="${KUBE_LOCAL_DNS_IP:-169.254.20.10}"
+export ENABLE_NODELOCAL_DNS="${KUBE_ENABLE_NODELOCAL_DNS:-false}"
+export LOCAL_DNS_IP="${KUBE_LOCAL_DNS_IP:-169.254.20.10}"
 
 # Enable metadata concealment by firewalling pod traffic to the metadata server
 # and run a proxy daemonset on nodes.
@@ -230,12 +231,12 @@ if [[ ${ENABLE_METADATA_CONCEALMENT:-} == "true" ]]; then
 fi
 
 # Optional: Enable node logging.
-ENABLE_NODE_LOGGING="${KUBE_ENABLE_NODE_LOGGING:-true}"
-LOGGING_DESTINATION="${KUBE_LOGGING_DESTINATION:-gcp}" # options: elasticsearch, gcp
+export ENABLE_NODE_LOGGING="${KUBE_ENABLE_NODE_LOGGING:-true}"
+export LOGGING_DESTINATION="${KUBE_LOGGING_DESTINATION:-gcp}" # options: elasticsearch, gcp
 
 # Optional: When set to true, Elasticsearch and Kibana will be setup as part of the cluster bring up.
-ENABLE_CLUSTER_LOGGING="${KUBE_ENABLE_CLUSTER_LOGGING:-true}"
-ELASTICSEARCH_LOGGING_REPLICAS=1
+export ENABLE_CLUSTER_LOGGING="${KUBE_ENABLE_CLUSTER_LOGGING:-true}"
+export ELASTICSEARCH_LOGGING_REPLICAS=1
 
 # Optional: Don't require https for registries in our local RFC1918 network
 if [[ ${KUBE_ENABLE_INSECURE_REGISTRY:-false} == "true" ]]; then
@@ -246,7 +247,7 @@ fi
 RUNTIME_CONFIG="${KUBE_RUNTIME_CONFIG:-}"
 
 if [[ "${KUBE_FEATURE_GATES:-}" == "AllAlpha=true" ]]; then
-  RUNTIME_CONFIG="${KUBE_RUNTIME_CONFIG:-api/all=true}"
+  export RUNTIME_CONFIG="${KUBE_RUNTIME_CONFIG:-api/all=true}"
 fi
 
 # If feature gates includes AllAlpha or EndpointSlice, and EndpointSlice has not been disabled, add EndpointSlice controller to list of controllers to run.
@@ -257,7 +258,7 @@ fi
 # Optional: set feature gates
 FEATURE_GATES="${KUBE_FEATURE_GATES:-}"
 
-if [[ ! -z "${NODE_ACCELERATORS}" ]]; then
+if [[ -n "${NODE_ACCELERATORS}" ]]; then
     if [[ -z "${FEATURE_GATES:-}" ]]; then
         FEATURE_GATES="DevicePlugins=true"
     else
@@ -271,16 +272,16 @@ fi
 # Optional: Install cluster DNS.
 # Set CLUSTER_DNS_CORE_DNS to 'false' to install kube-dns instead of CoreDNS.
 CLUSTER_DNS_CORE_DNS="${CLUSTER_DNS_CORE_DNS:-true}"
-ENABLE_CLUSTER_DNS="${KUBE_ENABLE_CLUSTER_DNS:-true}"
-DNS_SERVER_IP="${KUBE_DNS_SERVER_IP:-10.0.0.10}"
-DNS_DOMAIN="${KUBE_DNS_DOMAIN:-cluster.local}"
-DNS_MEMORY_LIMIT="${KUBE_DNS_MEMORY_LIMIT:-170Mi}"
+export ENABLE_CLUSTER_DNS="${KUBE_ENABLE_CLUSTER_DNS:-true}"
+export DNS_SERVER_IP="${KUBE_DNS_SERVER_IP:-10.0.0.10}"
+export DNS_DOMAIN="${KUBE_DNS_DOMAIN:-cluster.local}"
+export DNS_MEMORY_LIMIT="${KUBE_DNS_MEMORY_LIMIT:-170Mi}"
 
 # Optional: Enable DNS horizontal autoscaler
-ENABLE_DNS_HORIZONTAL_AUTOSCALER="${KUBE_ENABLE_DNS_HORIZONTAL_AUTOSCALER:-true}"
+export ENABLE_DNS_HORIZONTAL_AUTOSCALER="${KUBE_ENABLE_DNS_HORIZONTAL_AUTOSCALER:-true}"
 
 # Optional: Install Kubernetes UI
-ENABLE_CLUSTER_UI="${KUBE_ENABLE_CLUSTER_UI:-true}"
+export ENABLE_CLUSTER_UI="${KUBE_ENABLE_CLUSTER_UI:-true}"
 
 # Optional: Install node problem detector.
 #   none           - Not run node problem detector.
@@ -290,7 +291,7 @@ if [[ "${NODE_OS_DISTRIBUTION}" == "gci" ]]; then
   # Enable standalone mode by default for gci.
   ENABLE_NODE_PROBLEM_DETECTOR="${KUBE_ENABLE_NODE_PROBLEM_DETECTOR:-standalone}"
 else
-  ENABLE_NODE_PROBLEM_DETECTOR="${KUBE_ENABLE_NODE_PROBLEM_DETECTOR:-daemonset}"
+  export ENABLE_NODE_PROBLEM_DETECTOR="${KUBE_ENABLE_NODE_PROBLEM_DETECTOR:-daemonset}"
 fi
 NODE_PROBLEM_DETECTOR_VERSION="${NODE_PROBLEM_DETECTOR_VERSION:-}"
 NODE_PROBLEM_DETECTOR_TAR_HASH="${NODE_PROBLEM_DETECTOR_TAR_HASH:-}"
@@ -304,10 +305,10 @@ CNI_STORAGE_URL_BASE="${CNI_STORAGE_URL_BASE:-https://storage.googleapis.com/k8s
 # Optional: Create autoscaler for cluster's nodes.
 ENABLE_CLUSTER_AUTOSCALER="${KUBE_ENABLE_CLUSTER_AUTOSCALER:-false}"
 if [[ "${ENABLE_CLUSTER_AUTOSCALER}" == "true" ]]; then
-  AUTOSCALER_MIN_NODES="${KUBE_AUTOSCALER_MIN_NODES:-}"
-  AUTOSCALER_MAX_NODES="${KUBE_AUTOSCALER_MAX_NODES:-}"
-  AUTOSCALER_ENABLE_SCALE_DOWN="${KUBE_AUTOSCALER_ENABLE_SCALE_DOWN:-true}"
-  AUTOSCALER_EXPANDER_CONFIG="${KUBE_AUTOSCALER_EXPANDER_CONFIG:---expander=price}"
+  export AUTOSCALER_MIN_NODES="${KUBE_AUTOSCALER_MIN_NODES:-}"
+  export AUTOSCALER_MAX_NODES="${KUBE_AUTOSCALER_MAX_NODES:-}"
+  export AUTOSCALER_ENABLE_SCALE_DOWN="${KUBE_AUTOSCALER_ENABLE_SCALE_DOWN:-true}"
+  export AUTOSCALER_EXPANDER_CONFIG="${KUBE_AUTOSCALER_EXPANDER_CONFIG:---expander=price}"
 fi
 
 # Optional: Enable allocation of pod IPs using IP aliases.
@@ -319,28 +320,27 @@ fi
 #   new subnetwork will be created for the cluster.
 ENABLE_IP_ALIASES=${KUBE_GCE_ENABLE_IP_ALIASES:-false}
 NODE_IPAM_MODE=${KUBE_GCE_NODE_IPAM_MODE:-RangeAllocator}
-if [ ${ENABLE_IP_ALIASES} = true ]; then
+if [ "${ENABLE_IP_ALIASES}" = true ]; then
   # Number of Pods that can run on this node.
   MAX_PODS_PER_NODE=${MAX_PODS_PER_NODE:-110}
   # Size of ranges allocated to each node.
-  IP_ALIAS_SIZE="/$(get-alias-range-size ${MAX_PODS_PER_NODE})"
+  IP_ALIAS_SIZE="/$(get-alias-range-size "${MAX_PODS_PER_NODE}")"
+  export IP_ALIAS_SIZE
   IP_ALIAS_SUBNETWORK=${KUBE_GCE_IP_ALIAS_SUBNETWORK:-${INSTANCE_PREFIX}-subnet-default}
   # If we're using custom network, use the subnet we already create for it as the one for ip-alias.
   # Note that this means SUBNETWORK would override KUBE_GCE_IP_ALIAS_SUBNETWORK in case of custom network.
   if [[ "${CREATE_CUSTOM_NETWORK}" == true ]]; then
-    IP_ALIAS_SUBNETWORK="${SUBNETWORK}"
+    export IP_ALIAS_SUBNETWORK="${SUBNETWORK}"
   fi
-  # Reserve the services IP space to avoid being allocated for other GCP resources.
-  SERVICE_CLUSTER_IP_SUBNETWORK=${KUBE_GCE_SERVICE_CLUSTER_IP_SUBNETWORK:-${INSTANCE_PREFIX}-subnet-services}
-  NODE_IPAM_MODE=${KUBE_GCE_NODE_IPAM_MODE:-CloudAllocator}
+  export NODE_IPAM_MODE=${KUBE_GCE_NODE_IPAM_MODE:-CloudAllocator}
   SECONDARY_RANGE_NAME=${SECONDARY_RANGE_NAME:-}
   # Add to the provider custom variables.
   PROVIDER_VARS="${PROVIDER_VARS:-} ENABLE_IP_ALIASES"
   PROVIDER_VARS="${PROVIDER_VARS:-} NODE_IPAM_MODE"
   PROVIDER_VARS="${PROVIDER_VARS:-} SECONDARY_RANGE_NAME"
 elif [[ -n "${MAX_PODS_PER_NODE:-}" ]]; then
   # Should not have MAX_PODS_PER_NODE set for route-based clusters.
-  echo -e "${color_red}Cannot set MAX_PODS_PER_NODE for route-based projects for ${PROJECT}." >&2
+  echo -e "${color_red:-}Cannot set MAX_PODS_PER_NODE for route-based projects for ${PROJECT}." >&2
   exit 1
 fi
 
@@ -387,12 +387,12 @@ NETWORK_PROVIDER="${NETWORK_PROVIDER:-kubenet}" # none, kubenet
 # Network Policy plugin specific settings.
 NETWORK_POLICY_PROVIDER="${NETWORK_POLICY_PROVIDER:-none}" # calico
 
-NON_MASQUERADE_CIDR="0.0.0.0/0"
+export NON_MASQUERADE_CIDR="0.0.0.0/0"
 
 # How should the kubelet configure hairpin mode?
 HAIRPIN_MODE="${HAIRPIN_MODE:-hairpin-veth}" # promiscuous-bridge, hairpin-veth, none
 # Optional: if set to true, kube-up will configure the cluster to run e2e tests.
-E2E_STORAGE_TEST_ENVIRONMENT="${KUBE_E2E_STORAGE_TEST_ENVIRONMENT:-false}"
+export E2E_STORAGE_TEST_ENVIRONMENT="${KUBE_E2E_STORAGE_TEST_ENVIRONMENT:-false}"
 
 # Evict pods whenever compute resource availability on the nodes gets below a threshold.
 EVICTION_HARD="${EVICTION_HARD:-memory.available<250Mi,nodefs.available<10%,nodefs.inodesFree<5%}"
@@ -433,7 +433,7 @@ fi
 
 # Fluentd requirements
 # YAML exists to trigger a configuration refresh when changes are made.
-FLUENTD_GCP_YAML_VERSION="v3.2.0"
+export FLUENTD_GCP_YAML_VERSION="v3.2.0"
 FLUENTD_GCP_VERSION="${FLUENTD_GCP_VERSION:-1.6.17}"
 FLUENTD_GCP_MEMORY_LIMIT="${FLUENTD_GCP_MEMORY_LIMIT:-}"
 FLUENTD_GCP_CPU_REQUEST="${FLUENTD_GCP_CPU_REQUEST:-}"
@@ -476,7 +476,7 @@ ROTATE_CERTIFICATES="${ROTATE_CERTIFICATES:-}"
 # into kube-controller-manager via `--concurrent-service-syncs`
 CONCURRENT_SERVICE_SYNCS="${CONCURRENT_SERVICE_SYNCS:-}"
 
-SERVICEACCOUNT_ISSUER="https://kubernetes.io/${CLUSTER_NAME}"
+export SERVICEACCOUNT_ISSUER="https://kubernetes.io/${CLUSTER_NAME}"
 
 # Optional: Enable Node termination Handler for Preemptible and GPU VMs.
 # https://github.com/GoogleCloudPlatform/k8s-node-termination-handler
@@ -491,9 +491,9 @@ fi
 WINDOWS_NODE_TAINTS="${WINDOWS_NODE_TAINTS:-node.kubernetes.io/os=win1809:NoSchedule}"
 
 # Whether to set up a private GCE cluster, i.e. a cluster where nodes have only private IPs.
-GCE_PRIVATE_CLUSTER="${KUBE_GCE_PRIVATE_CLUSTER:-false}"
-GCE_PRIVATE_CLUSTER_PORTS_PER_VM="${KUBE_GCE_PRIVATE_CLUSTER_PORTS_PER_VM:-}"
+export GCE_PRIVATE_CLUSTER="${KUBE_GCE_PRIVATE_CLUSTER:-false}"
+export GCE_PRIVATE_CLUSTER_PORTS_PER_VM="${KUBE_GCE_PRIVATE_CLUSTER_PORTS_PER_VM:-}"
 
 # Optional: Create apiserver konnectivity server and agent.
-ENABLE_EGRESS_VIA_KONNECTIVITY_SERVICE="${KUBE_ENABLE_EGRESS_VIA_KONNECTIVITY_SERVICE:-false}"
-KONNECTIVITY_SERVICE_PROXY_PROTOCOL_MODE="${KUBE_KONNECTIVITY_SERVICE_PROXY_PROTOCOL_MODE:-grpc}"
+export ENABLE_EGRESS_VIA_KONNECTIVITY_SERVICE="${KUBE_ENABLE_EGRESS_VIA_KONNECTIVITY_SERVICE:-false}"
+export KONNECTIVITY_SERVICE_PROXY_PROTOCOL_MODE="${KUBE_KONNECTIVITY_SERVICE_PROXY_PROTOCOL_MODE:-grpc}"

hack/.shellcheck_failures

@@ -1,4 +1,3 @@
-./cluster/gce/config-default.sh
 ./cluster/gce/gci/configure-helper.sh
 ./cluster/gce/gci/configure.sh
 ./cluster/gce/gci/master-helper.sh