mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-07-24 20:24:09 +00:00
Move kubelet flag generation from the node to the client, and
pass the kubelet flags through a new variable in kube-env (KUBELET_ARGS). Remove vars from kube-env that were only used for kubelet flags. This will make it simpler to gradually migrate to dynamic kubelet config, because we can gradually replace flags with config file options in a single place without worrying about the plumbing to move variables from the client onto the node.
This commit is contained in:
Robert Bailey
parent
be2e702844
commit
fe10c27ec0
@ -125,6 +125,8 @@ NODE_SCOPES="${NODE_SCOPES:-monitoring,logging-write,storage-ro}"
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# Extra docker options for nodes.
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EXTRA_DOCKER_OPTS="${EXTRA_DOCKER_OPTS:-}"
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VOLUME_PLUGIN_DIR="${VOLUME_PLUGIN_DIR:-/etc/srv/kubernetes/kubelet-plugins/volume/exec}"
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SERVICE_CLUSTER_IP_RANGE="${SERVICE_CLUSTER_IP_RANGE:-10.0.0.0/16}" # formerly PORTAL_NET
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ALLOCATE_NODE_CIDRS=true
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@ -175,6 +175,8 @@ CONTROLLER_MANAGER_TEST_LOG_LEVEL="${CONTROLLER_MANAGER_TEST_LOG_LEVEL:-$TEST_CL
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SCHEDULER_TEST_LOG_LEVEL="${SCHEDULER_TEST_LOG_LEVEL:-$TEST_CLUSTER_LOG_LEVEL}"
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KUBEPROXY_TEST_LOG_LEVEL="${KUBEPROXY_TEST_LOG_LEVEL:-$TEST_CLUSTER_LOG_LEVEL}"
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VOLUME_PLUGIN_DIR="${VOLUME_PLUGIN_DIR:-/etc/srv/kubernetes/kubelet-plugins/volume/exec}"
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# TODO: change this and flex e2e test when default flex volume install path is changed for GCI
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# Set flex dir to one that's readable from controller-manager container and writable by the flex e2e test.
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if [[ "${MASTER_OS_DISTRIBUTION}" == "gci" ]]; then
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@ -1090,8 +1090,8 @@ EOF
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function start-kubelet {
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echo "Start kubelet"
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local -r kubelet_cert_dir="/var/lib/kubelet/pki/"
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mkdir -p "${kubelet_cert_dir}"
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# TODO(#60123): The kubelet should create the cert-dir directory if it doesn't exist
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mkdir -p /var/lib/kubelet/pki/
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local kubelet_bin="${KUBE_HOME}/bin/kubelet"
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local -r version="$("${kubelet_bin}" --version=true | cut -f2 -d " ")"
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@ -1109,114 +1109,9 @@ function start-kubelet {
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fi
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fi
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echo "Using kubelet binary at ${kubelet_bin}"
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local flags="${KUBELET_TEST_LOG_LEVEL:-"--v=2"} ${KUBELET_TEST_ARGS:-}"
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flags+=" --allow-privileged=true"
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flags+=" --cgroup-root=/"
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flags+=" --cloud-provider=gce"
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flags+=" --cluster-dns=${DNS_SERVER_IP}"
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flags+=" --cluster-domain=${DNS_DOMAIN}"
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flags+=" --pod-manifest-path=/etc/kubernetes/manifests"
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flags+=" --experimental-mounter-path=${CONTAINERIZED_MOUNTER_HOME}/mounter"
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flags+=" --experimental-check-node-capabilities-before-mount=true"
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flags+=" --cert-dir=${kubelet_cert_dir}"
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if [[ -n "${KUBELET_PORT:-}" ]]; then
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flags+=" --port=${KUBELET_PORT}"
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fi
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if [[ "${KUBERNETES_MASTER:-}" == "true" ]]; then
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flags+=" ${MASTER_KUBELET_TEST_ARGS:-}"
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flags+=" --enable-debugging-handlers=false"
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flags+=" --hairpin-mode=none"
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if [[ "${REGISTER_MASTER_KUBELET:-false}" == "true" ]]; then
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#TODO(mikedanese): allow static pods to start before creating a client
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#flags+=" --bootstrap-kubeconfig=/var/lib/kubelet/bootstrap-kubeconfig"
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#flags+=" --kubeconfig=/var/lib/kubelet/kubeconfig"
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flags+=" --kubeconfig=/var/lib/kubelet/bootstrap-kubeconfig"
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flags+=" --register-schedulable=false"
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else
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# Standalone mode (not widely used?)
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flags+=" --pod-cidr=${MASTER_IP_RANGE}"
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fi
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else # For nodes
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flags+=" ${NODE_KUBELET_TEST_ARGS:-}"
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flags+=" --enable-debugging-handlers=true"
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flags+=" --bootstrap-kubeconfig=/var/lib/kubelet/bootstrap-kubeconfig"
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flags+=" --kubeconfig=/var/lib/kubelet/kubeconfig"
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if [[ "${HAIRPIN_MODE:-}" == "promiscuous-bridge" ]] || \
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[[ "${HAIRPIN_MODE:-}" == "hairpin-veth" ]] || \
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[[ "${HAIRPIN_MODE:-}" == "none" ]]; then
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flags+=" --hairpin-mode=${HAIRPIN_MODE}"
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fi
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flags+=" --anonymous-auth=false --authorization-mode=Webhook --client-ca-file=${CA_CERT_BUNDLE_PATH}"
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fi
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# Network plugin
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if [[ -n "${NETWORK_PROVIDER:-}" || -n "${NETWORK_POLICY_PROVIDER:-}" ]]; then
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flags+=" --cni-bin-dir=/home/kubernetes/bin"
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if [[ "${NETWORK_POLICY_PROVIDER:-}" == "calico" ]]; then
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# Calico uses CNI always.
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# Keep KUBERNETES_PRIVATE_MASTER for backward compatibility.
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# Note that network policy won't work for master node.
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if [[ "${KUBERNETES_PRIVATE_MASTER:-}" == "true" || "${KUBERNETES_MASTER:-}" == "true" ]]; then
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flags+=" --network-plugin=${NETWORK_PROVIDER}"
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else
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flags+=" --network-plugin=cni"
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fi
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else
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# Otherwise use the configured value.
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flags+=" --network-plugin=${NETWORK_PROVIDER}"
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fi
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fi
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if [[ -n "${NON_MASQUERADE_CIDR:-}" ]]; then
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flags+=" --non-masquerade-cidr=${NON_MASQUERADE_CIDR}"
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fi
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# FlexVolume plugin
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if [[ -n "${VOLUME_PLUGIN_DIR:-}" ]]; then
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flags+=" --volume-plugin-dir=${VOLUME_PLUGIN_DIR}"
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fi
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if [[ "${ENABLE_MANIFEST_URL:-}" == "true" ]]; then
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flags+=" --manifest-url=${MANIFEST_URL}"
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flags+=" --manifest-url-header=${MANIFEST_URL_HEADER}"
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fi
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if [[ -n "${ENABLE_CUSTOM_METRICS:-}" ]]; then
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flags+=" --enable-custom-metrics=${ENABLE_CUSTOM_METRICS}"
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fi
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local node_labels=""
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if [[ "${KUBE_PROXY_DAEMONSET:-}" == "true" && "${KUBERNETES_MASTER:-}" != "true" ]]; then
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# Add kube-proxy daemonset label to node to avoid situation during cluster
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# upgrade/downgrade when there are two instances of kube-proxy running on a node.
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node_labels="beta.kubernetes.io/kube-proxy-ds-ready=true"
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fi
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if [[ -n "${NODE_LABELS:-}" ]]; then
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node_labels="${node_labels:+${node_labels},}${NODE_LABELS}"
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fi
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if [[ -n "${NON_MASTER_NODE_LABELS:-}" && "${KUBERNETES_MASTER:-}" != "true" ]]; then
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node_labels="${node_labels:+${node_labels},}${NON_MASTER_NODE_LABELS}"
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fi
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if [[ -n "${node_labels:-}" ]]; then
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flags+=" --node-labels=${node_labels}"
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fi
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if [[ -n "${NODE_TAINTS:-}" ]]; then
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flags+=" --register-with-taints=${NODE_TAINTS}"
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fi
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if [[ -n "${EVICTION_HARD:-}" ]]; then
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flags+=" --eviction-hard=${EVICTION_HARD}"
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fi
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if [[ -n "${FEATURE_GATES:-}" ]]; then
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flags+=" --feature-gates=${FEATURE_GATES}"
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fi
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if [[ -n "${ROTATE_CERTIFICATES:-}" ]]; then
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flags+=" --rotate-certificates=true"
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fi
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if [[ -n "${CONTAINER_RUNTIME:-}" ]]; then
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flags+=" --container-runtime=${CONTAINER_RUNTIME}"
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fi
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if [[ -n "${CONTAINER_RUNTIME_ENDPOINT:-}" ]]; then
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flags+=" --container-runtime-endpoint=${CONTAINER_RUNTIME_ENDPOINT}"
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fi
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local -r kubelet_env_file="/etc/default/kubelet"
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echo "KUBELET_OPTS=\"${flags}\"" > "${kubelet_env_file}"
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echo "KUBELET_OPTS=\"${KUBELET_ARGS}\"" > "${kubelet_env_file}"
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# Write the systemd service file for kubelet.
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cat <<EOF >/etc/systemd/system/kubelet.service
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@ -500,6 +500,7 @@ function write-master-env {
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KUBERNETES_MASTER_NAME="${MASTER_NAME}"
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fi
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construct-kubelet-flags true
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build-kube-env true "${KUBE_TEMP}/master-kube-env.yaml"
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build-kube-master-certs "${KUBE_TEMP}/kube-master-certs.yaml"
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}
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@ -509,9 +510,120 @@ function write-node-env {
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KUBERNETES_MASTER_NAME="${MASTER_NAME}"
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fi
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construct-kubelet-flags false
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build-kube-env false "${KUBE_TEMP}/node-kube-env.yaml"
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}
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# $1: if 'true', we're rendering flags for a master, else a node
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function construct-kubelet-flags {
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local master=$1
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local flags="${KUBELET_TEST_LOG_LEVEL:-"--v=2"} ${KUBELET_TEST_ARGS:-}"
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flags+=" --allow-privileged=true"
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flags+=" --cgroup-root=/"
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flags+=" --cloud-provider=gce"
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flags+=" --cluster-dns=${DNS_SERVER_IP}"
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flags+=" --cluster-domain=${DNS_DOMAIN}"
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flags+=" --pod-manifest-path=/etc/kubernetes/manifests"
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# Keep in sync with CONTAINERIZED_MOUNTER_HOME in configure-helper.sh
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flags+=" --experimental-mounter-path=/home/kubernetes/containerized_mounter/mounter"
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flags+=" --experimental-check-node-capabilities-before-mount=true"
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# Keep in sync with the mkdir command in configure-helper.sh (until the TODO is resolved)
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flags+=" --cert-dir=/var/lib/kubelet/pki/"
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if [[ "${master}" == "true" ]]; then
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flags+=" ${MASTER_KUBELET_TEST_ARGS:-}"
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flags+=" --enable-debugging-handlers=false"
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flags+=" --hairpin-mode=none"
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if [[ "${REGISTER_MASTER_KUBELET:-false}" == "true" ]]; then
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#TODO(mikedanese): allow static pods to start before creating a client
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#flags+=" --bootstrap-kubeconfig=/var/lib/kubelet/bootstrap-kubeconfig"
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#flags+=" --kubeconfig=/var/lib/kubelet/kubeconfig"
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flags+=" --kubeconfig=/var/lib/kubelet/bootstrap-kubeconfig"
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flags+=" --register-schedulable=false"
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else
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# Note: Standalone mode is used by GKE
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flags+=" --pod-cidr=${MASTER_IP_RANGE}"
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fi
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else # For nodes
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flags+=" ${NODE_KUBELET_TEST_ARGS:-}"
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flags+=" --enable-debugging-handlers=true"
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flags+=" --bootstrap-kubeconfig=/var/lib/kubelet/bootstrap-kubeconfig"
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flags+=" --kubeconfig=/var/lib/kubelet/kubeconfig"
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if [[ "${HAIRPIN_MODE:-}" == "promiscuous-bridge" ]] || \
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[[ "${HAIRPIN_MODE:-}" == "hairpin-veth" ]] || \
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[[ "${HAIRPIN_MODE:-}" == "none" ]]; then
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flags+=" --hairpin-mode=${HAIRPIN_MODE}"
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fi
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# Keep client-ca-file in sync with CA_CERT_BUNDLE_PATH in configure-helper.sh
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flags+=" --anonymous-auth=false --authorization-mode=Webhook --client-ca-file=/etc/srv/kubernetes/pki/ca-certificates.crt"
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fi
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# Network plugin
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if [[ -n "${NETWORK_PROVIDER:-}" || -n "${NETWORK_POLICY_PROVIDER:-}" ]]; then
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flags+=" --cni-bin-dir=/home/kubernetes/bin"
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if [[ "${NETWORK_POLICY_PROVIDER:-}" == "calico" ]]; then
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# Calico uses CNI always.
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# Note that network policy won't work for master node.
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if [[ "${master}" == "true" ]]; then
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flags+=" --network-plugin=${NETWORK_PROVIDER}"
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else
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flags+=" --network-plugin=cni"
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fi
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else
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# Otherwise use the configured value.
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flags+=" --network-plugin=${NETWORK_PROVIDER}"
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fi
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fi
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if [[ -n "${NON_MASQUERADE_CIDR:-}" ]]; then
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flags+=" --non-masquerade-cidr=${NON_MASQUERADE_CIDR}"
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fi
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flags+=" --volume-plugin-dir=${VOLUME_PLUGIN_DIR}"
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# Note: ENABLE_MANIFEST_URL is used by GKE
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if [[ "${ENABLE_MANIFEST_URL:-}" == "true" ]]; then
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flags+=" --manifest-url=${MANIFEST_URL}"
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flags+=" --manifest-url-header=${MANIFEST_URL_HEADER}"
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fi
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if [[ -n "${ENABLE_CUSTOM_METRICS:-}" ]]; then
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flags+=" --enable-custom-metrics=${ENABLE_CUSTOM_METRICS}"
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fi
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local node_labels=""
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if [[ "${KUBE_PROXY_DAEMONSET:-}" == "true" && "${master}" != "true" ]]; then
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# Add kube-proxy daemonset label to node to avoid situation during cluster
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# upgrade/downgrade when there are two instances of kube-proxy running on a node.
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node_labels="beta.kubernetes.io/kube-proxy-ds-ready=true"
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fi
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if [[ -n "${NODE_LABELS:-}" ]]; then
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node_labels="${node_labels:+${node_labels},}${NODE_LABELS}"
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fi
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if [[ -n "${NON_MASTER_NODE_LABELS:-}" && "${master}" != "true" ]]; then
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node_labels="${node_labels:+${node_labels},}${NON_MASTER_NODE_LABELS}"
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fi
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if [[ -n "${node_labels:-}" ]]; then
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flags+=" --node-labels=${node_labels}"
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fi
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if [[ -n "${NODE_TAINTS:-}" ]]; then
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flags+=" --register-with-taints=${NODE_TAINTS}"
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fi
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if [[ -n "${EVICTION_HARD:-}" ]]; then
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flags+=" --eviction-hard=${EVICTION_HARD}"
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fi
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if [[ -n "${FEATURE_GATES:-}" ]]; then
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flags+=" --feature-gates=${FEATURE_GATES}"
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fi
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# TODO(mtaufen): ROTATE_CERTIFICATES seems unused; delete it?
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if [[ -n "${ROTATE_CERTIFICATES:-}" ]]; then
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flags+=" --rotate-certificates=true"
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fi
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if [[ -n "${CONTAINER_RUNTIME:-}" ]]; then
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flags+=" --container-runtime=${CONTAINER_RUNTIME}"
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fi
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# TODO(mtaufen): CONTAINER_RUNTIME_ENDPOINT seems unused; delete it?
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if [[ -n "${CONTAINER_RUNTIME_ENDPOINT:-}" ]]; then
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flags+=" --container-runtime-endpoint=${CONTAINER_RUNTIME_ENDPOINT}"
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fi
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KUBELET_ARGS="${flags}"
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}
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function build-kube-master-certs {
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local file=$1
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rm -f ${file}
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@ -622,12 +734,9 @@ CONTAINER_RUNTIME_NAME: $(yaml-quote ${CONTAINER_RUNTIME_NAME:-})
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NODE_LOCAL_SSDS_EXT: $(yaml-quote ${NODE_LOCAL_SSDS_EXT:-})
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LOAD_IMAGE_COMMAND: $(yaml-quote ${LOAD_IMAGE_COMMAND:-})
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ZONE: $(yaml-quote ${ZONE})
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VOLUME_PLUGIN_DIR: $(yaml-quote ${VOLUME_PLUGIN_DIR})
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KUBELET_ARGS: $(yaml-quote ${KUBELET_ARGS})
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EOF
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if [ -n "${KUBELET_PORT:-}" ]; then
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cat >>$file <<EOF
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KUBELET_PORT: $(yaml-quote ${KUBELET_PORT})
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EOF
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fi
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if [ -n "${KUBE_APISERVER_REQUEST_TIMEOUT:-}" ]; then
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cat >>$file <<EOF
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KUBE_APISERVER_REQUEST_TIMEOUT: $(yaml-quote ${KUBE_APISERVER_REQUEST_TIMEOUT})
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@ -648,26 +757,6 @@ EOF
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if [ -n "${TEST_CLUSTER:-}" ]; then
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cat >>$file <<EOF
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TEST_CLUSTER: $(yaml-quote ${TEST_CLUSTER})
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EOF
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fi
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if [ -n "${KUBELET_TEST_ARGS:-}" ]; then
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cat >>$file <<EOF
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KUBELET_TEST_ARGS: $(yaml-quote ${KUBELET_TEST_ARGS})
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EOF
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fi
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if [ -n "${NODE_KUBELET_TEST_ARGS:-}" ]; then
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cat >>$file <<EOF
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NODE_KUBELET_TEST_ARGS: $(yaml-quote ${NODE_KUBELET_TEST_ARGS})
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EOF
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fi
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if [ -n "${MASTER_KUBELET_TEST_ARGS:-}" ]; then
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cat >>$file <<EOF
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MASTER_KUBELET_TEST_ARGS: $(yaml-quote ${MASTER_KUBELET_TEST_ARGS})
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EOF
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fi
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if [ -n "${KUBELET_TEST_LOG_LEVEL:-}" ]; then
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cat >>$file <<EOF
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KUBELET_TEST_LOG_LEVEL: $(yaml-quote ${KUBELET_TEST_LOG_LEVEL})
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EOF
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fi
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if [ -n "${DOCKER_TEST_LOG_LEVEL:-}" ]; then
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@ -688,11 +777,6 @@ EOF
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if [ -n "${DOCKER_LOG_MAX_FILE:-}" ]; then
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cat >>$file <<EOF
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DOCKER_LOG_MAX_FILE: $(yaml-quote ${DOCKER_LOG_MAX_FILE})
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EOF
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fi
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if [ -n "${ENABLE_CUSTOM_METRICS:-}" ]; then
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cat >>$file <<EOF
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ENABLE_CUSTOM_METRICS: $(yaml-quote ${ENABLE_CUSTOM_METRICS})
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EOF
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fi
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if [ -n "${FEATURE_GATES:-}" ]; then
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@ -700,18 +784,6 @@ EOF
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FEATURE_GATES: $(yaml-quote ${FEATURE_GATES})
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EOF
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fi
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if [ -n "${ROTATE_CERTIFICATES:-}" ]; then
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cat >>$file <<EOF
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ROTATE_CERTIFICATES: $(yaml-quote ${ROTATE_CERTIFICATES})
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EOF
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fi
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if [[ "${master}" == "true" && "${MASTER_OS_DISTRIBUTION}" == "gci" ]] ||
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[[ "${master}" == "false" && "${NODE_OS_DISTRIBUTION}" == "gci" ]]; then
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cat >>$file <<EOF
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VOLUME_PLUGIN_DIR: $(yaml-quote ${VOLUME_PLUGIN_DIR:-/etc/srv/kubernetes/kubelet-plugins/volume/exec})
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EOF
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fi
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if [ -n "${PROVIDER_VARS:-}" ]; then
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local var_name
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local var_value
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@ -736,9 +808,6 @@ MASTER_KEY: $(yaml-quote ${MASTER_KEY_BASE64:-})
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KUBECFG_CERT: $(yaml-quote ${KUBECFG_CERT_BASE64:-})
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KUBECFG_KEY: $(yaml-quote ${KUBECFG_KEY_BASE64:-})
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KUBELET_APISERVER: $(yaml-quote ${KUBELET_APISERVER:-})
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ENABLE_MANIFEST_URL: $(yaml-quote ${ENABLE_MANIFEST_URL:-false})
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MANIFEST_URL: $(yaml-quote ${MANIFEST_URL:-})
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MANIFEST_URL_HEADER: $(yaml-quote ${MANIFEST_URL_HEADER:-})
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NUM_NODES: $(yaml-quote ${NUM_NODES})
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STORAGE_BACKEND: $(yaml-quote ${STORAGE_BACKEND:-etcd3})
|
||||
STORAGE_MEDIA_TYPE: $(yaml-quote ${STORAGE_MEDIA_TYPE:-})
|
||||
@ -875,21 +944,6 @@ KUBEPROXY_TEST_LOG_LEVEL: $(yaml-quote ${KUBEPROXY_TEST_LOG_LEVEL})
|
||||
EOF
|
||||
fi
|
||||
fi
|
||||
if [ -n "${NODE_LABELS:-}" ]; then
|
||||
cat >>$file <<EOF
|
||||
NODE_LABELS: $(yaml-quote ${NODE_LABELS})
|
||||
EOF
|
||||
fi
|
||||
if [ -n "${NON_MASTER_NODE_LABELS:-}" ]; then
|
||||
cat >>$file <<EOF
|
||||
NON_MASTER_NODE_LABELS: $(yaml-quote ${NON_MASTER_NODE_LABELS})
|
||||
EOF
|
||||
fi
|
||||
if [ -n "${EVICTION_HARD:-}" ]; then
|
||||
cat >>$file <<EOF
|
||||
EVICTION_HARD: $(yaml-quote ${EVICTION_HARD})
|
||||
EOF
|
||||
fi
|
||||
if [[ "${ENABLE_CLUSTER_AUTOSCALER}" == "true" ]]; then
|
||||
cat >>$file <<EOF
|
||||
ENABLE_CLUSTER_AUTOSCALER: $(yaml-quote ${ENABLE_CLUSTER_AUTOSCALER})
|
||||
|
||||
Loading…
Reference in New Issue
Block a user