Merge pull request #41667 from mikedanese/certs

Automatic merge from submit-queue (batch tested with PRs 41667, 41820, 40910, 41645, 41361)

refactor certs in GCE to break up usages

TODO: debian

cluster/gce/configure-vm.sh

@@ -53,6 +53,27 @@ ensure-packages() {
   :
 }
 
+function create-node-pki {
+  echo "Creating node pki files"
+
+  local -r pki_dir="/etc/kubernetes/pki"
+  mkdir -p "${pki_dir}"
+
+  if [[ -z "${CA_CERT_BUNDLE:-}" ]]; then
+    CA_CERT_BUNDLE="${CA_CERT}"
+    CA_CERT_BUNDLE_PATH="${pki_dir}/ca-certificates.crt"
+    echo "${CA_CERT_BUNDLE}" | base64 --decode > "${CA_CERT_BUNDLE_PATH}"
+  fi
+
+  if [[ ! -z "${KUBELET_CERT:-}" && ! -z "${KUBELET_KEY:-}" ]]; then
+    KUBELET_CERT_PATH="${pki_dir}/kubelet.crt"
+    echo "${KUBELET_CERT}" | base64 --decode > "${KUBELET_CERT_PATH}"
+
+    KUBELET_KEY_PATH="${pki_dir}/kubelet.key"
+    echo "${KUBELET_KEY}" | base64 --decode > "${KUBELET_KEY_PATH}"
+  fi
+}
+
 # A hookpoint for setting up local devices
 ensure-local-disks() {
  for ssd in /dev/disk/by-id/google-local-ssd-*; do
@@ -476,7 +497,7 @@ e2e_storage_test_environment: '$(echo "$E2E_STORAGE_TEST_ENVIRONMENT" | sed -e "
 kube_uid: '$(echo "${KUBE_UID}" | sed -e "s/'/''/g")'
 initial_etcd_cluster: '$(echo "${INITIAL_ETCD_CLUSTER:-}" | sed -e "s/'/''/g")'
 initial_etcd_cluster_state: '$(echo "${INITIAL_ETCD_CLUSTER_STATE:-}" | sed -e "s/'/''/g")'
-
+ca_cert_bundle_path: '$(echo "${CA_CERT_BUNDLE_PATH:-}" | sed -e "s/'/''/g")'
 hostname: $(hostname -s)
 enable_default_storage_class: '$(echo "$ENABLE_DEFAULT_STORAGE_CLASS" | sed -e "s/'/''/g")'
 EOF
@@ -727,11 +748,6 @@ function create-salt-master-kubelet-auth() {
 function create-salt-kubelet-auth() {
   local -r kubelet_kubeconfig_file="/srv/salt-overlay/salt/kubelet/kubeconfig"
   if [ ! -e "${kubelet_kubeconfig_file}" ]; then
-    # If there isn't a CA certificate set specifically for the kubelet, use
-    # the cluster CA certificate.
-    if [[ -z "${KUBELET_CA_CERT:-}" ]]; then
-      KUBELET_CA_CERT="${CA_CERT}"
-    fi
     mkdir -p /srv/salt-overlay/salt/kubelet
     (umask 077;
       cat > "${kubelet_kubeconfig_file}" <<EOF
@@ -740,13 +756,13 @@ kind: Config
 users:
 - name: kubelet
   user:
-    client-certificate-data: ${KUBELET_CERT}
-    client-key-data: ${KUBELET_KEY}
+    client-certificate: ${KUBELET_CERT_PATH}
+    client-key: ${KUBELET_KEY_PATH}
 clusters:
 - name: local
   cluster:
     server: https://kubernetes-master
-    certificate-authority-data: ${KUBELET_CA_CERT}
+    certificate-authority: ${CA_CERT_BUNDLE_PATH}
 contexts:
 - context:
     cluster: local
@@ -756,9 +772,6 @@ current-context: service-account-context
 EOF
 )
   fi
-  local -r client_ca_file="/srv/salt-overlay/salt/kubelet/ca.crt"
-  (umask 077;
-    echo "${KUBELET_CA_CERT}" | base64 --decode > "${client_ca_file}")
 }
 
 # This should happen both on cluster initialization and node upgrades.
@@ -780,7 +793,7 @@ users:
 clusters:
 - name: local
   cluster:
-    certificate-authority-data: ${CA_CERT}
+    certificate-authority-data: ${CA_CERT_BUNDLE}
 contexts:
 - context:
     cluster: local
@@ -1129,6 +1142,7 @@ if [[ -z "${is_push}" ]]; then
   set-kube-env
   auto-upgrade
   ensure-local-disks
+  create-node-pki
   [[ "${KUBERNETES_MASTER}" == "true" ]] && mount-master-pd
   create-salt-pillar
   if [[ "${KUBERNETES_MASTER}" == "true" ]]; then

cluster/gce/gci/configure-helper.sh

@@ -204,24 +204,79 @@ function replace_prefixed_line {
   echo "${prefix}${suffix}" >> "${file}"
 }
 
+function create-node-pki {
+  echo "Creating node pki files"
+
+  local -r pki_dir="/etc/srv/kubernetes/pki"
+  mkdir -p "${pki_dir}"
+
+  if [[ -z "${CA_CERT_BUNDLE:-}" ]]; then
+    CA_CERT_BUNDLE="${CA_CERT}"
+    CA_CERT_BUNDLE_PATH="${pki_dir}/ca-certificates.crt"
+    echo "${CA_CERT_BUNDLE}" | base64 --decode > "${CA_CERT_BUNDLE_PATH}"
+  fi
+
+  if [[ ! -z "${KUBELET_CERT:-}" && ! -z "${KUBELET_KEY:-}" ]]; then
+    KUBELET_CERT_PATH="${pki_dir}/kubelet.crt"
+    echo "${KUBELET_CERT}" | base64 --decode > "${KUBELET_CERT_PATH}"
+
+    KUBELET_KEY_PATH="${pki_dir}/kubelet.key"
+    echo "${KUBELET_KEY}" | base64 --decode > "${KUBELET_KEY_PATH}"
+  fi
+}
+
+function create-master-pki {
+  echo "Creating master pki files"
+
+  local -r pki_dir="/etc/srv/kubernetes/pki"
+  mkdir -p "${pki_dir}"
+
+  CA_CERT_PATH="${pki_dir}/ca.crt"
+  echo "${CA_CERT}" | base64 --decode > "${CA_CERT_PATH}"
+
+  # this is not true on GKE
+  if [[ ! -z "${CA_KEY:-}" ]]; then
+    CA_KEY_PATH="${pki_dir}/ca.key"
+    echo "${CA_KEY}" | base64 --decode > "${CA_KEY_PATH}"
+  fi
+
+  if [[ -z "${APISERVER_SERVER_CERT:-}" || -z "${APISERVER_SERVER_KEY:-}" ]]; then
+    APISERVER_SERVER_CERT="${MASTER_CERT}"
+    APISERVER_SERVER_CERT_PATH="${pki_dir}/apiserver.crt"
+    echo "${APISERVER_SERVER_CERT}" | base64 --decode > "${APISERVER_SERVER_CERT_PATH}"
+
+    APISERVER_SERVER_KEY="${MASTER_KEY}"
+    APISERVER_SERVER_KEY_PATH="${pki_dir}/apiserver.key"
+    echo "${APISERVER_SERVER_KEY}" | base64 --decode > "${APISERVER_SERVER_KEY_PATH}"
+  fi
+
+  if [[ -z "${APISERVER_CLIENT_CERT:-}" || -z "${APISERVER_CLIENT_KEY:-}" ]]; then
+    APISERVER_CLIENT_CERT="${KUBEAPISERVER_CERT}"
+    APISERVER_CLIENT_CERT_PATH="${pki_dir}/apiserver-client.crt"
+    echo "${APISERVER_CLIENT_CERT}" | base64 --decode > "${APISERVER_CLIENT_CERT_PATH}"
+
+    APISERVER_CLIENT_KEY="${KUBEAPISERVER_KEY}"
+    APISERVER_CLIENT_KEY_PATH="${pki_dir}/apiserver-client.key"
+    echo "${APISERVER_CLIENT_KEY}" | base64 --decode > "${APISERVER_CLIENT_KEY_PATH}"
+  fi
+
+  if [[ -z "${SERVICEACCOUNT_CERT:-}" || -z "${SERVICEACCOUNT_KEY:-}" ]]; then
+    SERVICEACCOUNT_CERT="${MASTER_CERT}"
+    SERVICEACCOUNT_CERT_PATH="${pki_dir}/serviceaccount.crt"
+    echo "${SERVICEACCOUNT_CERT}" | base64 --decode > "${SERVICEACCOUNT_CERT_PATH}"
+
+    SERVICEACCOUNT_KEY="${MASTER_KEY}"
+    SERVICEACCOUNT_KEY_PATH="${pki_dir}/serviceaccount.key"
+    echo "${SERVICEACCOUNT_KEY}" | base64 --decode > "${SERVICEACCOUNT_KEY_PATH}"
+  fi
+}
+
 # After the first boot and on upgrade, these files exist on the master-pd
 # and should never be touched again (except perhaps an additional service
 # account, see NB below.)
 function create-master-auth {
   echo "Creating master auth files"
   local -r auth_dir="/etc/srv/kubernetes"
-  if [[ ! -e "${auth_dir}/ca.crt" && ! -z "${CA_CERT:-}" && ! -z "${MASTER_CERT:-}" && ! -z "${MASTER_KEY:-}" ]]; then
-    echo "${CA_CERT}" | base64 --decode > "${auth_dir}/ca.crt"
-    echo "${MASTER_CERT}" | base64 --decode > "${auth_dir}/server.cert"
-    echo "${MASTER_KEY}" | base64 --decode > "${auth_dir}/server.key"
-  fi
-  if [[ ! -z "${CA_KEY:-}" ]]; then
-    echo "${CA_KEY}" | base64 --decode > "${auth_dir}/ca.key"
-  fi
-  if [ ! -e "${auth_dir}/kubeapiserver.cert" ] && [[ ! -z "${KUBEAPISERVER_CERT:-}" ]] && [[ ! -z "${KUBEAPISERVER_KEY:-}" ]]; then
-    echo "${KUBEAPISERVER_CERT}" | base64 --decode > "${auth_dir}/kubeapiserver.cert"
-    echo "${KUBEAPISERVER_KEY}" | base64 --decode > "${auth_dir}/kubeapiserver.key"
-  fi
   local -r basic_auth_csv="${auth_dir}/basic_auth.csv"
   if [[ -n "${KUBE_PASSWORD:-}" && -n "${KUBE_USER:-}" ]]; then
     replace_prefixed_line "${basic_auth_csv}" "${KUBE_PASSWORD},${KUBE_USER}," "admin,system:masters"
@@ -353,21 +408,18 @@ EOF
 
 function create-kubelet-kubeconfig {
   echo "Creating kubelet kubeconfig file"
-  if [[ -z "${KUBELET_CA_CERT:-}" ]]; then
-    KUBELET_CA_CERT="${CA_CERT}"
-  fi
   cat <<EOF >/var/lib/kubelet/kubeconfig
 apiVersion: v1
 kind: Config
 users:
 - name: kubelet
   user:
-    client-certificate-data: ${KUBELET_CERT}
-    client-key-data: ${KUBELET_KEY}
+    client-certificate: ${KUBELET_CERT_PATH}
+    client-key: ${KUBELET_KEY_PATH}
 clusters:
 - name: local
   cluster:
-    certificate-authority-data: ${KUBELET_CA_CERT}
+    certificate-authority: ${CA_CERT_BUNDLE_PATH}
 contexts:
 - context:
     cluster: local
@@ -375,7 +427,6 @@ contexts:
   name: service-account-context
 current-context: service-account-context
 EOF
-  echo "${KUBELET_CA_CERT}" | base64 -d > /var/lib/kubelet/ca.crt
 }
 
 # Uses KUBELET_CA_CERT (falling back to CA_CERT), KUBELET_CERT, and KUBELET_KEY
@@ -403,7 +454,7 @@ users:
 clusters:
 - name: local
   cluster:
-    certificate-authority-data: ${CA_CERT}
+    certificate-authority-data: ${CA_CERT_BUNDLE}
 contexts:
 - context:
     cluster: local
@@ -629,7 +680,7 @@ function start-kubelet {
        [[ "${HAIRPIN_MODE:-}" == "none" ]]; then
       flags+=" --hairpin-mode=${HAIRPIN_MODE}"
     fi
-    flags+=" --anonymous-auth=false --authorization-mode=Webhook --client-ca-file=/var/lib/kubelet/ca.crt"
+    flags+=" --anonymous-auth=false --authorization-mode=Webhook --client-ca-file=${CA_CERT_BUNDLE_PATH}"
   fi
   # Network plugin
   if [[ -n "${NETWORK_PROVIDER:-}" ]]; then
@@ -910,15 +961,15 @@ function start-kube-apiserver {
   params+=" --address=127.0.0.1"
   params+=" --allow-privileged=true"
   params+=" --cloud-provider=gce"
-  params+=" --client-ca-file=/etc/srv/kubernetes/ca.crt"
+  params+=" --client-ca-file=${CA_CERT_BUNDLE_PATH}"
   params+=" --etcd-servers=http://127.0.0.1:2379"
   params+=" --etcd-servers-overrides=/events#http://127.0.0.1:4002"
   params+=" --secure-port=443"
-  params+=" --tls-cert-file=/etc/srv/kubernetes/server.cert"
-  params+=" --tls-private-key-file=/etc/srv/kubernetes/server.key"
-  if [[ -e /etc/srv/kubernetes/kubeapiserver.cert ]] && [[ -e /etc/srv/kubernetes/kubeapiserver.key ]]; then
-    params+=" --kubelet-client-certificate=/etc/srv/kubernetes/kubeapiserver.cert"
-    params+=" --kubelet-client-key=/etc/srv/kubernetes/kubeapiserver.key"
+  params+=" --tls-cert-file=${APISERVER_SERVER_CERT_PATH}"
+  params+=" --tls-private-key-file=${APISERVER_SERVER_KEY_PATH}"
+  if [[ -e "${APISERVER_CLIENT_CERT_PATH}" ]] && [[ -e "${APISERVER_CLIENT_KEY_PATH}" ]]; then
+    params+=" --kubelet-client-certificate=${APISERVER_CLIENT_CERT_PATH}"
+    params+=" --kubelet-client-key=${APISERVER_CLIENT_KEY_PATH}"
   fi
   params+=" --token-auth-file=/etc/srv/kubernetes/known_tokens.csv"
   if [[ -n "${KUBE_PASSWORD:-}" && -n "${KUBE_USER:-}" ]]; then
@@ -1079,8 +1130,8 @@ function start-kube-controller-manager {
   params+=" --use-service-account-credentials"
   params+=" --cloud-provider=gce"
   params+=" --kubeconfig=/etc/srv/kubernetes/kube-controller-manager/kubeconfig"
-  params+=" --root-ca-file=/etc/srv/kubernetes/ca.crt"
-  params+=" --service-account-private-key-file=/etc/srv/kubernetes/server.key"
+  params+=" --root-ca-file=${CA_CERT_BUNDLE_PATH}"
+  params+=" --service-account-private-key-file=${SERVICEACCOUNT_KEY_PATH}"
   if [[ -n "${ENABLE_GARBAGE_COLLECTOR:-}" ]]; then
     params+=" --enable-garbage-collector=${ENABLE_GARBAGE_COLLECTOR}"
   fi
@@ -1091,8 +1142,8 @@ function start-kube-controller-manager {
     params+=" --cluster-cidr=${CLUSTER_IP_RANGE}"
   fi
   if [[ -n "${CA_KEY:-}" ]]; then
-    params+=" --cluster-signing-cert-file=/etc/srv/kubernetes/ca.crt"
-    params+=" --cluster-signing-key-file=/etc/srv/kubernetes/ca.key"
+    params+=" --cluster-signing-cert-file=${CA_CERT_PATH}"
+    params+=" --cluster-signing-key-file=${CA_KEY_PATH}"
   fi
   if [[ -n "${SERVICE_CLUSTER_IP_RANGE:-}" ]]; then
     params+=" --service-cluster-ip-range=${SERVICE_CLUSTER_IP_RANGE}"
@@ -1470,10 +1521,13 @@ ensure-local-ssds
 setup-logrotate
 if [[ "${KUBERNETES_MASTER:-}" == "true" ]]; then
   mount-master-pd
+  create-node-pki
+  create-master-pki
   create-master-auth
   create-master-kubelet-auth
   create-master-etcd-auth
 else
+  create-node-pki
   create-kubelet-kubeconfig
   create-kubeproxy-kubeconfig
   if [[ "${ENABLE_NODE_PROBLEM_DETECTOR:-}" == "standalone" ]]; then

cluster/saltbase/salt/kubelet/default

@@ -188,7 +188,7 @@
   {% set eviction_hard="--eviction-hard=" + pillar['eviction_hard'] %}
 {% endif -%}
 
-{% set kubelet_auth = "--anonymous-auth=false --authorization-mode=Webhook --client-ca-file=/var/lib/kubelet/ca.crt" %}
+{% set kubelet_auth = "--anonymous-auth=false --authorization-mode=Webhook --client-ca-file=" + pillar.get('ca_cert_bundle_path', '/var/lib/kubelet/ca.crt') %}
 
 # test_args has to be kept at the end, so they'll overwrite any prior configuration
 DAEMON_ARGS="{{daemon_args}} {{api_servers_with_port}} {{debugging_handlers}} {{hostname_override}} {{cloud_provider}} {{cloud_config}} {{config}} {{manifest_url}} --allow-privileged={{pillar['allow_privileged']}} {{log_level}} {{cluster_dns}} {{cluster_domain}} {{docker_root}} {{kubelet_root}}  {{non_masquerade_cidr}} {{cgroup_root}} {{system_container}} {{pod_cidr}} {{ master_kubelet_args }} {{cpu_cfs_quota}} {{network_plugin}} {{kubelet_port}} {{ hairpin_mode }} {{enable_custom_metrics}} {{runtime_container}} {{kubelet_container}} {{node_labels}} {{babysit_daemons}} {{eviction_hard}} {{kubelet_auth}} {{feature_gates}} {{test_args}}"

cluster/saltbase/salt/kubelet/init.sls

@@ -31,6 +31,7 @@
     - mode: 400
     - makedirs: true
 
+{% if grains.cloud != 'gce' %}
 /var/lib/kubelet/ca.crt:
   file.managed:
     - source: salt://kubelet/ca.crt
@@ -38,6 +39,7 @@
     - group: root
     - mode: 400
     - makedirs: true
+{% endif %}
 
 {% if pillar.get('is_systemd') %}
 
@@ -59,7 +61,9 @@ fix-service-kubelet:
       - file: {{ pillar.get('systemd_system_path') }}/kubelet.service
       - file: {{ environment_file }}
       - file: /var/lib/kubelet/kubeconfig
+{% if grains.cloud != 'gce' %}
       - file: /var/lib/kubelet/ca.crt
+{% endif %}
 
 {% else %}
 
@@ -87,7 +91,9 @@ kubelet:
 {% endif %}
       - file: {{ environment_file }}
       - file: /var/lib/kubelet/kubeconfig
+{% if grains.cloud != 'gce' %}
       - file: /var/lib/kubelet/ca.crt
+{% endif %}
 {% if pillar.get('is_systemd') %}
     - provider:
       - service: systemd