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Merge pull request #91116 from liggitt/local-up-cluster-rotation

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Enable kubelet client-cert bootstrap/rotation in local-up-cluster
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Kubernetes Prow Robot 2020-05-23 13:23:10 -07:00 committed by GitHub
commit 4e8b56e667
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1 changed files with 12 additions and 5 deletions
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17
hack/local-up-cluster.sh
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@ -236,9 +236,8 @@ ENABLE_CONTROLLER_ATTACH_DETACH=${ENABLE_CONTROLLER_ATTACH_DETACH:-"true"} # cur
# which should be able to be used as the CA to verify itself
CERT_DIR=${CERT_DIR:-"/var/run/kubernetes"}
ROOT_CA_FILE=${CERT_DIR}/server-ca.crt
ROOT_CA_KEY=${CERT_DIR}/server-ca.key
CLUSTER_SIGNING_CERT_FILE=${CLUSTER_SIGNING_CERT_FILE:-"${ROOT_CA_FILE}"}
CLUSTER_SIGNING_KEY_FILE=${CLUSTER_SIGNING_KEY_FILE:-"${ROOT_CA_KEY}"}
CLUSTER_SIGNING_CERT_FILE=${CLUSTER_SIGNING_CERT_FILE:-"${CERT_DIR}/client-ca.crt"}
CLUSTER_SIGNING_KEY_FILE=${CLUSTER_SIGNING_KEY_FILE:-"${CERT_DIR}/client-ca.key"}
# Reuse certs will skip generate new ca/cert files under CERT_DIR
# it's useful with PRESERVE_ETCD=true because new ca will make existed service account secrets invalided
REUSE_CERTS=${REUSE_CERTS:-false}
@ -610,6 +609,9 @@ EOF
# Grant apiserver permission to speak to the kubelet
${KUBECTL} --kubeconfig "${CERT_DIR}/admin.kubeconfig" create clusterrolebinding kube-apiserver-kubelet-admin --clusterrole=system:kubelet-api-admin --user=kube-apiserver
# Grant kubelets permission to request client certificates
${KUBECTL} --kubeconfig "${CERT_DIR}/admin.kubeconfig" create clusterrolebinding kubelet-csr --clusterrole=system:certificates.k8s.io:certificatesigningrequests:selfnodeclient --group=system:nodes
${CONTROLPLANE_SUDO} cp "${CERT_DIR}/admin.kubeconfig" "${CERT_DIR}/admin-kube-aggregator.kubeconfig"
${CONTROLPLANE_SUDO} chown "$(whoami)" "${CERT_DIR}/admin-kube-aggregator.kubeconfig"
${KUBECTL} config set-cluster local-up-cluster --kubeconfig="${CERT_DIR}/admin-kube-aggregator.kubeconfig" --server="https://${API_HOST_IP}:31090"
@ -686,7 +688,7 @@ function wait_node_ready(){
# check the nodes information after kubelet daemon start
local nodes_stats="${KUBECTL} --kubeconfig '${CERT_DIR}/admin.kubeconfig' get nodes"
local node_name=$HOSTNAME_OVERRIDE
local system_node_wait_time=30
local system_node_wait_time=60
local interval_time=2
kube::util::wait_for_success "$system_node_wait_time" "$interval_time" "$nodes_stats | grep $node_name"
if [ $? == "1" ]; then
@ -770,7 +772,9 @@ function start_kubelet {
"--hostname-override=${HOSTNAME_OVERRIDE}"
"${cloud_config_arg[@]}"
"--address=${KUBELET_HOST}"
--kubeconfig "${CERT_DIR}"/kubelet.kubeconfig
"--bootstrap-kubeconfig=${CERT_DIR}/kubelet.kubeconfig"
"--kubeconfig=${CERT_DIR}/kubelet-rotated.kubeconfig"
"--rotate-certificates=true"
"--feature-gates=${FEATURE_GATES}"
"--cpu-cfs-quota=${CPU_CFS_QUOTA}"
"--enable-controller-attach-detach=${ENABLE_CONTROLLER_ATTACH_DETACH}"
@ -800,6 +804,9 @@ function start_kubelet {
fi
if [[ "${REUSE_CERTS}" != true ]]; then
# clear previous dynamic certs
sudo rm -fr "/var/lib/kubelet/pki" "${CERT_DIR}/kubelet-rotated.kubeconfig"
# create new certs
generate_kubelet_certs
fi