#!/bin/bash # Copyright 2016 The Kubernetes Authors. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # This script is for configuring kubernetes master and node instances. It is # uploaded in the manifests tar ball. # TODO: this script duplicates templating logic from cluster/saltbase/salt # using sed. It should use an actual template parser on the manifest # files. set -o errexit set -o nounset set -o pipefail function setup-os-params { # Reset core_pattern. On GCI, the default core_pattern pipes the core dumps to # /sbin/crash_reporter which is more restrictive in saving crash dumps. So for # now, set a generic core_pattern that users can work with. echo "core.%e.%p.%t" > /proc/sys/kernel/core_pattern } function config-ip-firewall { echo "Configuring IP firewall rules" # The GCI image has host firewall which drop most inbound/forwarded packets. # We need to add rules to accept all TCP/UDP/ICMP packets. if iptables -L INPUT | grep "Chain INPUT (policy DROP)" > /dev/null; then echo "Add rules to accept all inbound TCP/UDP/ICMP packets" iptables -A INPUT -w -p TCP -j ACCEPT iptables -A INPUT -w -p UDP -j ACCEPT iptables -A INPUT -w -p ICMP -j ACCEPT fi if iptables -L FORWARD | grep "Chain FORWARD (policy DROP)" > /dev/null; then echo "Add rules to accept all forwarded TCP/UDP/ICMP packets" iptables -A FORWARD -w -p TCP -j ACCEPT iptables -A FORWARD -w -p UDP -j ACCEPT iptables -A FORWARD -w -p ICMP -j ACCEPT fi } function create-dirs { echo "Creating required directories" mkdir -p /var/lib/kubelet mkdir -p /etc/kubernetes/manifests if [[ "${KUBERNETES_MASTER:-}" == "false" ]]; then mkdir -p /var/lib/kube-proxy fi } # Formats the given device ($1) if needed and mounts it at given mount point # ($2). function safe-format-and-mount() { device=$1 mountpoint=$2 # Format only if the disk is not already formatted. if ! tune2fs -l "${device}" ; then echo "Formatting '${device}'" mkfs.ext4 -F -E lazy_itable_init=0,lazy_journal_init=0,discard "${device}" fi mkdir -p "${mountpoint}" echo "Mounting '${device}' at '${mountpoint}'" mount -o discard,defaults "${device}" "${mountpoint}" } # Local ssds, if present, are mounted at /mnt/disks/ssdN. function ensure-local-ssds() { for ssd in /dev/disk/by-id/google-local-ssd-*; do if [ -e "${ssd}" ]; then ssdnum=`echo ${ssd} | sed -e 's/\/dev\/disk\/by-id\/google-local-ssd-\([0-9]*\)/\1/'` ssdmount="/mnt/disks/ssd${ssdnum}/" mkdir -p ${ssdmount} safe-format-and-mount "${ssd}" ${ssdmount} echo "Mounted local SSD $ssd at ${ssdmount}" chmod a+w ${ssdmount} else echo "No local SSD disks found." fi done } # Installs logrotate configuration files function setup-logrotate() { mkdir -p /etc/logrotate.d/ cat >/etc/logrotate.d/docker-containers < 100Mb OR if one day has elapsed # * save rotated logs into a gzipped timestamped backup # * log file timestamp (controlled by 'dateformat') includes seconds too. This # ensures that logrotate can generate unique logfiles during each rotation # (otherwise it skips rotation if 'maxsize' is reached multiple times in a # day). # * keep only 5 old (rotated) logs, and will discard older logs. cat > /etc/logrotate.d/allvarlogs </dev/null; then useradd -s /sbin/nologin -d /var/etcd etcd fi chown -R etcd "${mount_point}/var/etcd" chgrp -R etcd "${mount_point}/var/etcd" } # After the first boot and on upgrade, these files exist on the master-pd # and should never be touched again (except perhaps an additional service # account, see NB below.) function create-master-auth { echo "Creating master auth files" local -r auth_dir="/etc/srv/kubernetes" if [[ ! -e "${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 > "${auth_dir}/server.key" fi local -r basic_auth_csv="${auth_dir}/basic_auth.csv" if [[ ! -e "${basic_auth_csv}" ]]; then echo "${KUBE_PASSWORD},${KUBE_USER},admin" > "${basic_auth_csv}" fi local -r known_tokens_csv="${auth_dir}/known_tokens.csv" if [[ ! -e "${known_tokens_csv}" ]]; then echo "${KUBE_BEARER_TOKEN},admin,admin" > "${known_tokens_csv}" echo "${KUBELET_TOKEN},kubelet,kubelet" >> "${known_tokens_csv}" echo "${KUBE_PROXY_TOKEN},kube_proxy,kube_proxy" >> "${known_tokens_csv}" fi local use_cloud_config="false" cat </etc/gce.conf [global] EOF if [[ -n "${PROJECT_ID:-}" && -n "${TOKEN_URL:-}" && -n "${TOKEN_BODY:-}" && -n "${NODE_NETWORK:-}" ]]; then use_cloud_config="true" cat <>/etc/gce.conf token-url = ${TOKEN_URL} token-body = ${TOKEN_BODY} project-id = ${PROJECT_ID} network-name = ${NODE_NETWORK} EOF fi if [[ -n "${NODE_INSTANCE_PREFIX:-}" ]]; then use_cloud_config="true" if [[ -n "${NODE_TAGS:-}" ]]; then local -r node_tags="${NODE_TAGS}" else local -r node_tags="${NODE_INSTANCE_PREFIX}" fi cat <>/etc/gce.conf node-tags = ${node_tags} node-instance-prefix = ${NODE_INSTANCE_PREFIX} EOF fi if [[ -n "${MULTIZONE:-}" ]]; then use_cloud_config="true" cat <>/etc/gce.conf multizone = ${MULTIZONE} EOF fi if [[ "${use_cloud_config}" != "true" ]]; then rm -f /etc/gce.conf fi if [[ -n "${GCP_AUTHN_URL:-}" ]]; then cat </etc/gcp_authn.config clusters: - name: gcp-authentication-server cluster: server: ${GCP_AUTHN_URL} users: - name: kube-apiserver user: auth-provider: name: gcp current-context: webhook contexts: - context: cluster: gcp-authentication-server user: kube-apiserver name: webhook EOF fi if [[ -n "${GCP_AUTHZ_URL:-}" ]]; then cat </etc/gcp_authz.config clusters: - name: gcp-authorization-server cluster: server: ${GCP_AUTHZ_URL} users: - name: kube-apiserver user: auth-provider: name: gcp current-context: webhook contexts: - context: cluster: gcp-authorization-server user: kube-apiserver name: webhook EOF fi if [[ -n "${GCP_IMAGE_VERIFICATION_URL:-}" ]]; then # This is the config file for the image review webhook. cat </etc/gcp_image_review.config clusters: - name: gcp-image-review-server cluster: server: ${GCP_IMAGE_VERIFICATION_URL} users: - name: kube-apiserver user: auth-provider: name: gcp current-context: webhook contexts: - context: cluster: gcp-image-review-server user: kube-apiserver name: webhook EOF # This is the config for the image review admission controller. cat </etc/admission_controller.config imagePolicy: kubeConfigFile: /etc/gcp_image_review.config allowTTL: 30 denyTTL: 30 retryBackoff: 500 defaultAllow: true EOF fi } function create-kubelet-kubeconfig { echo "Creating kubelet kubeconfig file" if [[ -z "${KUBELET_CA_CERT:-}" ]]; then KUBELET_CA_CERT="${CA_CERT}" fi cat </var/lib/kubelet/kubeconfig apiVersion: v1 kind: Config users: - name: kubelet user: client-certificate-data: ${KUBELET_CERT} client-key-data: ${KUBELET_KEY} clusters: - name: local cluster: certificate-authority-data: ${KUBELET_CA_CERT} contexts: - context: cluster: local user: kubelet name: service-account-context current-context: service-account-context EOF } # Uses KUBELET_CA_CERT (falling back to CA_CERT), KUBELET_CERT, and KUBELET_KEY # to generate a kubeconfig file for the kubelet to securely connect to the apiserver. function create-master-kubelet-auth { # Only configure the kubelet on the master if the required variables are # set in the environment. if [[ -n "${KUBELET_APISERVER:-}" && -n "${KUBELET_CERT:-}" && -n "${KUBELET_KEY:-}" ]]; then create-kubelet-kubeconfig fi } function create-kubeproxy-kubeconfig { echo "Creating kube-proxy kubeconfig file" cat </var/lib/kube-proxy/kubeconfig apiVersion: v1 kind: Config users: - name: kube-proxy user: token: ${KUBE_PROXY_TOKEN} clusters: - name: local cluster: certificate-authority-data: ${CA_CERT} contexts: - context: cluster: local user: kube-proxy name: service-account-context current-context: service-account-context EOF } function assemble-docker-flags { echo "Assemble docker command line flags" local docker_opts="-p /var/run/docker.pid --iptables=false --ip-masq=false" if [[ "${TEST_CLUSTER:-}" == "true" ]]; then docker_opts+=" --log-level=debug" else docker_opts+=" --log-level=warn" fi local use_net_plugin="true" if [[ "${NETWORK_PROVIDER:-}" == "kubenet" || "${NETWORK_PROVIDER:-}" == "cni" ]]; then # set docker0 cidr to private ip address range to avoid conflict with cbr0 cidr range docker_opts+=" --bip=169.254.123.1/24" else use_net_plugin="false" docker_opts+=" --bridge=cbr0" fi # Decide whether to enable a docker registry mirror. This is taken from # the "kube-env" metadata value. if [[ -n "${DOCKER_REGISTRY_MIRROR_URL:-}" ]]; then echo "Enable docker registry mirror at: ${DOCKER_REGISTRY_MIRROR_URL}" docker_opts+=" --registry-mirror=${DOCKER_REGISTRY_MIRROR_URL}" fi echo "DOCKER_OPTS=\"${docker_opts} ${EXTRA_DOCKER_OPTS:-}\"" > /etc/default/docker # If using a network plugin, we need to explicitly restart docker daemon, because # kubelet will not do it. if [[ "${use_net_plugin}" == "true" ]]; then echo "Docker command line is updated. Restart docker to pick it up" systemctl restart docker fi } # A helper function for loading a docker image. It keeps trying up to 5 times. # # $1: Full path of the docker image function try-load-docker-image { local -r img=$1 echo "Try to load docker image file ${img}" # Temporarily turn off errexit, because we don't want to exit on first failure. set +e local -r max_attempts=5 local -i attempt_num=1 until timeout 30 docker load -i "${img}"; do if [[ "${attempt_num}" == "${max_attempts}" ]]; then echo "Fail to load docker image file ${img} after ${max_attempts} retries. Exist!!" exit 1 else attempt_num=$((attempt_num+1)) sleep 5 fi done # Re-enable errexit. set -e } # Loads kube-system docker images. It is better to do it before starting kubelet, # as kubelet will restart docker daemon, which may interfere with loading images. function load-docker-images { echo "Start loading kube-system docker images" local -r img_dir="${KUBE_HOME}/kube-docker-files" if [[ "${KUBERNETES_MASTER:-}" == "true" ]]; then try-load-docker-image "${img_dir}/kube-apiserver.tar" try-load-docker-image "${img_dir}/kube-controller-manager.tar" try-load-docker-image "${img_dir}/kube-scheduler.tar" else try-load-docker-image "${img_dir}/kube-proxy.tar" fi } # This function assembles the kubelet systemd service file and starts it # using systemctl. function start-kubelet { echo "Start kubelet" local kubelet_bin="${KUBE_HOME}/bin/kubelet" local -r version="$("${kubelet_bin}" --version=true | cut -f2 -d " ")" local -r builtin_kubelet="/usr/bin/kubelet" if [[ "${TEST_CLUSTER:-}" == "true" ]]; then # Determine which binary to use on test clusters. We use the built-in # version only if the downloaded version is the same as the built-in # version. This allows GCI to run some of the e2e tests to qualify the # built-in kubelet. if [[ -x "${builtin_kubelet}" ]]; then local -r builtin_version="$("${builtin_kubelet}" --version=true | cut -f2 -d " ")" if [[ "${builtin_version}" == "${version}" ]]; then kubelet_bin="${builtin_kubelet}" fi fi fi echo "Using kubelet binary at ${kubelet_bin}" local flags="${KUBELET_TEST_LOG_LEVEL:-"--v=2"} ${KUBELET_TEST_ARGS:-}" flags+=" --allow-privileged=true" flags+=" --babysit-daemons=true" flags+=" --cgroup-root=/" flags+=" --cloud-provider=gce" flags+=" --cluster-dns=${DNS_SERVER_IP}" flags+=" --cluster-domain=${DNS_DOMAIN}" flags+=" --config=/etc/kubernetes/manifests" if [[ -n "${KUBELET_PORT:-}" ]]; then flags+=" --port=${KUBELET_PORT}" fi if [[ "${KUBERNETES_MASTER:-}" == "true" ]]; then flags+=" --enable-debugging-handlers=false" flags+=" --hairpin-mode=none" if [[ ! -z "${KUBELET_APISERVER:-}" && ! -z "${KUBELET_CERT:-}" && ! -z "${KUBELET_KEY:-}" ]]; then flags+=" --api-servers=https://${KUBELET_APISERVER}" flags+=" --register-schedulable=false" # need at least a /29 pod cidr for now due to #32844 # TODO: determine if we still allow non-hostnetwork pods to run on master, clean up master pod setup # WARNING: potential ip range collision with 10.123.45.0/29 flags+=" --pod-cidr=10.123.45.0/29" else flags+=" --pod-cidr=${MASTER_IP_RANGE}" fi else # For nodes flags+=" --enable-debugging-handlers=true" flags+=" --api-servers=https://${KUBERNETES_MASTER_NAME}" if [[ "${HAIRPIN_MODE:-}" == "promiscuous-bridge" ]] || \ [[ "${HAIRPIN_MODE:-}" == "hairpin-veth" ]] || \ [[ "${HAIRPIN_MODE:-}" == "none" ]]; then flags+=" --hairpin-mode=${HAIRPIN_MODE}" fi fi # Network plugin if [[ -n "${NETWORK_PROVIDER:-}" ]]; then if [[ "${NETWORK_PROVIDER:-}" == "cni" ]]; then flags+=" --cni-bin-dir=/home/kubernetes/bin" else flags+=" --network-plugin-dir=/home/kubernetes/bin" fi flags+=" --network-plugin=${NETWORK_PROVIDER}" fi if [[ -n "${NON_MASQUERADE_CIDR:-}" ]]; then flags+=" --non-masquerade-cidr=${NON_MASQUERADE_CIDR}" fi if [[ "${ENABLE_MANIFEST_URL:-}" == "true" ]]; then flags+=" --manifest-url=${MANIFEST_URL}" flags+=" --manifest-url-header=${MANIFEST_URL_HEADER}" fi if [[ -n "${ENABLE_CUSTOM_METRICS:-}" ]]; then flags+=" --enable-custom-metrics=${ENABLE_CUSTOM_METRICS}" fi if [[ -n "${NODE_LABELS:-}" ]]; then flags+=" --node-labels=${NODE_LABELS}" fi if [[ -n "${EVICTION_HARD:-}" ]]; then flags+=" --eviction-hard=${EVICTION_HARD}" fi if [[ -n "${FEATURE_GATES:-}" ]]; then flags+=" --feature-gates=${FEATURE_GATES}" fi local -r kubelet_env_file="/etc/default/kubelet" echo "KUBELET_OPTS=\"${flags}\"" > "${kubelet_env_file}" # Write the systemd service file for kubelet. cat </etc/systemd/system/kubelet.service [Unit] Description=Kubernetes kubelet Requires=network-online.target After=network-online.target [Service] Restart=always RestartSec=10 EnvironmentFile=${kubelet_env_file} ExecStart=${kubelet_bin} \$KUBELET_OPTS [Install] WantedBy=multi-user.target EOF # Flush iptables nat table iptables -t nat -F || true systemctl start kubelet.service } # Create the log file and set its properties. # # $1 is the file to create. function prepare-log-file { touch $1 chmod 644 $1 chown root:root $1 } # Starts kube-proxy pod. function start-kube-proxy { echo "Start kube-proxy pod" prepare-log-file /var/log/kube-proxy.log local -r src_file="${KUBE_HOME}/kube-manifests/kubernetes/kube-proxy.manifest" remove-salt-config-comments "${src_file}" local -r kubeconfig="--kubeconfig=/var/lib/kube-proxy/kubeconfig" local kube_docker_registry="gcr.io/google_containers" if [[ -n "${KUBE_DOCKER_REGISTRY:-}" ]]; then kube_docker_registry=${KUBE_DOCKER_REGISTRY} fi local -r kube_proxy_docker_tag=$(cat /home/kubernetes/kube-docker-files/kube-proxy.docker_tag) local api_servers="--master=https://${KUBERNETES_MASTER_NAME}" local params="${KUBEPROXY_TEST_LOG_LEVEL:-"--v=2"}" if [[ -n "${FEATURE_GATES:-}" ]]; then params+=" --feature-gates=${FEATURE_GATES}" fi if [[ -n "${KUBEPROXY_TEST_ARGS:-}" ]]; then params+=" ${KUBEPROXY_TEST_ARGS}" fi sed -i -e "s@{{kubeconfig}}@${kubeconfig}@g" ${src_file} sed -i -e "s@{{pillar\['kube_docker_registry'\]}}@${kube_docker_registry}@g" ${src_file} sed -i -e "s@{{pillar\['kube-proxy_docker_tag'\]}}@${kube_proxy_docker_tag}@g" ${src_file} sed -i -e "s@{{params}}@${params}@g" ${src_file} sed -i -e "s@{{ cpurequest }}@100m@g" ${src_file} sed -i -e "s@{{api_servers_with_port}}@${api_servers}@g" ${src_file} if [[ -n "${CLUSTER_IP_RANGE:-}" ]]; then sed -i -e "s@{{cluster_cidr}}@--cluster-cidr=${CLUSTER_IP_RANGE}@g" ${src_file} fi cp "${src_file}" /etc/kubernetes/manifests } # Replaces the variables in the etcd manifest file with the real values, and then # copy the file to the manifest dir # $1: value for variable 'suffix' # $2: value for variable 'port' # $3: value for variable 'server_port' # $4: value for variable 'cpulimit' # $5: pod name, which should be either etcd or etcd-events function prepare-etcd-manifest { local host_name=$(hostname) local etcd_cluster="" local cluster_state="new" for host in $(echo "${INITIAL_ETCD_CLUSTER:-${host_name}}" | tr "," "\n"); do etcd_host="etcd-${host}=http://${host}:$3" if [[ -n "${etcd_cluster}" ]]; then etcd_cluster+="," cluster_state="existing" fi etcd_cluster+="${etcd_host}" done local -r temp_file="/tmp/$5" cp "${KUBE_HOME}/kube-manifests/kubernetes/gci-trusty/etcd.manifest" "${temp_file}" remove-salt-config-comments "${temp_file}" sed -i -e "s@{{ *suffix *}}@$1@g" "${temp_file}" sed -i -e "s@{{ *port *}}@$2@g" "${temp_file}" sed -i -e "s@{{ *server_port *}}@$3@g" "${temp_file}" sed -i -e "s@{{ *cpulimit *}}@\"$4\"@g" "${temp_file}" sed -i -e "s@{{ *hostname *}}@$host_name@g" "${temp_file}" sed -i -e "s@{{ *etcd_cluster *}}@$etcd_cluster@g" "${temp_file}" sed -i -e "s@{{ *storage_backend *}}@${STORAGE_BACKEND:-}@g" "${temp_file}" sed -i -e "s@{{ *cluster_state *}}@$cluster_state@g" "${temp_file}" if [[ -n "${ETCD_VERSION:-}" ]]; then sed -i -e "s@{{ *pillar\.get('etcd_docker_tag', '\(.*\)') *}}@${ETCD_VERSION}@g" "${temp_file}" else sed -i -e "s@{{ *pillar\.get('etcd_docker_tag', '\(.*\)') *}}@\1@g" "${temp_file}" fi # Replace the volume host path. sed -i -e "s@/mnt/master-pd/var/etcd@/mnt/disks/master-pd/var/etcd@g" "${temp_file}" mv "${temp_file}" /etc/kubernetes/manifests } function start-etcd-empty-dir-cleanup-pod { cp "${KUBE_HOME}/kube-manifests/kubernetes/gci-trusty/etcd-empty-dir-cleanup/etcd-empty-dir-cleanup.yaml" "/etc/kubernetes/manifests" } # Starts etcd server pod (and etcd-events pod if needed). # More specifically, it prepares dirs and files, sets the variable value # in the manifests, and copies them to /etc/kubernetes/manifests. function start-etcd-servers { echo "Start etcd pods" if [[ -d /etc/etcd ]]; then rm -rf /etc/etcd fi if [[ -e /etc/default/etcd ]]; then rm -f /etc/default/etcd fi if [[ -e /etc/systemd/system/etcd.service ]]; then rm -f /etc/systemd/system/etcd.service fi if [[ -e /etc/init.d/etcd ]]; then rm -f /etc/init.d/etcd fi prepare-log-file /var/log/etcd.log prepare-etcd-manifest "" "2379" "2380" "200m" "etcd.manifest" prepare-log-file /var/log/etcd-events.log prepare-etcd-manifest "-events" "4002" "2381" "100m" "etcd-events.manifest" } # Calculates the following variables based on env variables, which will be used # by the manifests of several kube-master components. # CLOUD_CONFIG_OPT # CLOUD_CONFIG_VOLUME # CLOUD_CONFIG_MOUNT # DOCKER_REGISTRY function compute-master-manifest-variables { CLOUD_CONFIG_OPT="" CLOUD_CONFIG_VOLUME="" CLOUD_CONFIG_MOUNT="" if [[ -f /etc/gce.conf ]]; then CLOUD_CONFIG_OPT="--cloud-config=/etc/gce.conf" CLOUD_CONFIG_VOLUME="{\"name\": \"cloudconfigmount\",\"hostPath\": {\"path\": \"/etc/gce.conf\"}}," CLOUD_CONFIG_MOUNT="{\"name\": \"cloudconfigmount\",\"mountPath\": \"/etc/gce.conf\", \"readOnly\": true}," fi DOCKER_REGISTRY="gcr.io/google_containers" if [[ -n "${KUBE_DOCKER_REGISTRY:-}" ]]; then DOCKER_REGISTRY="${KUBE_DOCKER_REGISTRY}" fi } # A helper function for removing salt configuration and comments from a file. # This is mainly for preparing a manifest file. # # $1: Full path of the file to manipulate function remove-salt-config-comments { # Remove salt configuration. sed -i "/^[ |\t]*{[#|%]/d" $1 # Remove comments. sed -i "/^[ |\t]*#/d" $1 } # Starts kubernetes apiserver. # It prepares the log file, loads the docker image, calculates variables, sets them # in the manifest file, and then copies the manifest file to /etc/kubernetes/manifests. # # Assumed vars (which are calculated in function compute-master-manifest-variables) # CLOUD_CONFIG_OPT # CLOUD_CONFIG_VOLUME # CLOUD_CONFIG_MOUNT # DOCKER_REGISTRY function start-kube-apiserver { echo "Start kubernetes api-server" prepare-log-file /var/log/kube-apiserver.log # Calculate variables and assemble the command line. local params="${API_SERVER_TEST_LOG_LEVEL:-"--v=2"} ${APISERVER_TEST_ARGS:-} ${CLOUD_CONFIG_OPT}" params+=" --address=127.0.0.1" params+=" --allow-privileged=true" params+=" --authorization-policy-file=/etc/srv/kubernetes/abac-authz-policy.jsonl" params+=" --basic-auth-file=/etc/srv/kubernetes/basic_auth.csv" params+=" --cloud-provider=gce" params+=" --client-ca-file=/etc/srv/kubernetes/ca.crt" params+=" --etcd-servers=http://127.0.0.1:2379" params+=" --etcd-servers-overrides=/events#http://127.0.0.1:4002" params+=" --secure-port=443" params+=" --tls-cert-file=/etc/srv/kubernetes/server.cert" params+=" --tls-private-key-file=/etc/srv/kubernetes/server.key" params+=" --token-auth-file=/etc/srv/kubernetes/known_tokens.csv" if [[ -n "${STORAGE_BACKEND:-}" ]]; then params+=" --storage-backend=${STORAGE_BACKEND}" fi if [[ -n "${ENABLE_GARBAGE_COLLECTOR:-}" ]]; then params+=" --enable-garbage-collector=${ENABLE_GARBAGE_COLLECTOR}" fi if [[ -n "${NUM_NODES:-}" ]]; then # Set amount of memory available for apiserver based on number of nodes. # TODO: Once we start setting proper requests and limits for apiserver # we should reuse the same logic here instead of current heuristic. params+=" --target-ram-mb=$((${NUM_NODES} * 60))" fi if [[ -n "${SERVICE_CLUSTER_IP_RANGE:-}" ]]; then params+=" --service-cluster-ip-range=${SERVICE_CLUSTER_IP_RANGE}" fi local admission_controller_config_mount="" local admission_controller_config_volume="" local image_policy_webhook_config_mount="" local image_policy_webhook_config_volume="" if [[ -n "${ADMISSION_CONTROL:-}" ]]; then params+=" --admission-control=${ADMISSION_CONTROL}" if [[ ${ADMISSION_CONTROL} == *"ImagePolicyWebhook"* ]]; then params+=" --admission-control-config-file=/etc/admission_controller.config" # Mount the file to configure admission controllers if ImagePolicyWebhook is set. admission_controller_config_mount="{\"name\": \"admissioncontrollerconfigmount\",\"mountPath\": \"/etc/admission_controller.config\", \"readOnly\": false}," admission_controller_config_volume="{\"name\": \"admissioncontrollerconfigmount\",\"hostPath\": {\"path\": \"/etc/admission_controller.config\"}}," # Mount the file to configure the ImagePolicyWebhook's webhook. image_policy_webhook_config_mount="{\"name\": \"imagepolicywebhookconfigmount\",\"mountPath\": \"/etc/gcp_image_review.config\", \"readOnly\": false}," image_policy_webhook_config_volume="{\"name\": \"imagepolicywebhookconfigmount\",\"hostPath\": {\"path\": \"/etc/gcp_image_review.config\"}}," fi fi if [[ -n "${KUBE_APISERVER_REQUEST_TIMEOUT:-}" ]]; then params+=" --min-request-timeout=${KUBE_APISERVER_REQUEST_TIMEOUT}" fi if [[ -n "${RUNTIME_CONFIG:-}" ]]; then params+=" --runtime-config=${RUNTIME_CONFIG}" fi if [[ -n "${FEATURE_GATES:-}" ]]; then params+=" --feature-gates=${FEATURE_GATES}" fi if [[ -n "${PROJECT_ID:-}" && -n "${TOKEN_URL:-}" && -n "${TOKEN_BODY:-}" && -n "${NODE_NETWORK:-}" ]]; then local -r vm_external_ip=$(curl --retry 5 --retry-delay 3 --fail --silent -H 'Metadata-Flavor: Google' "http://metadata/computeMetadata/v1/instance/network-interfaces/0/access-configs/0/external-ip") params+=" --advertise-address=${vm_external_ip}" params+=" --ssh-user=${PROXY_SSH_USER}" params+=" --ssh-keyfile=/etc/srv/sshproxy/.sshkeyfile" fi local webhook_authn_config_mount="" local webhook_authn_config_volume="" if [[ -n "${GCP_AUTHN_URL:-}" ]]; then params+=" --authentication-token-webhook-config-file=/etc/gcp_authn.config" webhook_authn_config_mount="{\"name\": \"webhookauthnconfigmount\",\"mountPath\": \"/etc/gcp_authn.config\", \"readOnly\": false}," webhook_authn_config_volume="{\"name\": \"webhookauthnconfigmount\",\"hostPath\": {\"path\": \"/etc/gcp_authn.config\"}}," fi params+=" --authorization-mode=ABAC" local webhook_config_mount="" local webhook_config_volume="" if [[ -n "${GCP_AUTHZ_URL:-}" ]]; then params+=",Webhook --authorization-webhook-config-file=/etc/gcp_authz.config" webhook_config_mount="{\"name\": \"webhookconfigmount\",\"mountPath\": \"/etc/gcp_authz.config\", \"readOnly\": false}," webhook_config_volume="{\"name\": \"webhookconfigmount\",\"hostPath\": {\"path\": \"/etc/gcp_authz.config\"}}," fi local -r src_dir="${KUBE_HOME}/kube-manifests/kubernetes/gci-trusty" if [[ -n "${KUBE_USER:-}" ]]; then local -r abac_policy_json="${src_dir}/abac-authz-policy.jsonl" remove-salt-config-comments "${abac_policy_json}" sed -i -e "s/{{kube_user}}/${KUBE_USER}/g" "${abac_policy_json}" cp "${abac_policy_json}" /etc/srv/kubernetes/ fi src_file="${src_dir}/kube-apiserver.manifest" remove-salt-config-comments "${src_file}" # Evaluate variables. local -r kube_apiserver_docker_tag=$(cat /home/kubernetes/kube-docker-files/kube-apiserver.docker_tag) sed -i -e "s@{{params}}@${params}@g" "${src_file}" sed -i -e "s@{{srv_kube_path}}@/etc/srv/kubernetes@g" "${src_file}" sed -i -e "s@{{srv_sshproxy_path}}@/etc/srv/sshproxy@g" "${src_file}" sed -i -e "s@{{cloud_config_mount}}@${CLOUD_CONFIG_MOUNT}@g" "${src_file}" sed -i -e "s@{{cloud_config_volume}}@${CLOUD_CONFIG_VOLUME}@g" "${src_file}" sed -i -e "s@{{pillar\['kube_docker_registry'\]}}@${DOCKER_REGISTRY}@g" "${src_file}" sed -i -e "s@{{pillar\['kube-apiserver_docker_tag'\]}}@${kube_apiserver_docker_tag}@g" "${src_file}" sed -i -e "s@{{pillar\['allow_privileged'\]}}@true@g" "${src_file}" sed -i -e "s@{{secure_port}}@443@g" "${src_file}" sed -i -e "s@{{secure_port}}@8080@g" "${src_file}" sed -i -e "s@{{additional_cloud_config_mount}}@@g" "${src_file}" sed -i -e "s@{{additional_cloud_config_volume}}@@g" "${src_file}" sed -i -e "s@{{webhook_authn_config_mount}}@${webhook_authn_config_mount}@g" "${src_file}" sed -i -e "s@{{webhook_authn_config_volume}}@${webhook_authn_config_volume}@g" "${src_file}" sed -i -e "s@{{webhook_config_mount}}@${webhook_config_mount}@g" "${src_file}" sed -i -e "s@{{webhook_config_volume}}@${webhook_config_volume}@g" "${src_file}" sed -i -e "s@{{admission_controller_config_mount}}@${admission_controller_config_mount}@g" "${src_file}" sed -i -e "s@{{admission_controller_config_volume}}@${admission_controller_config_volume}@g" "${src_file}" sed -i -e "s@{{image_policy_webhook_config_mount}}@${image_policy_webhook_config_mount}@g" "${src_file}" sed -i -e "s@{{image_policy_webhook_config_volume}}@${image_policy_webhook_config_volume}@g" "${src_file}" cp "${src_file}" /etc/kubernetes/manifests } # Starts kubernetes controller manager. # It prepares the log file, loads the docker image, calculates variables, sets them # in the manifest file, and then copies the manifest file to /etc/kubernetes/manifests. # # Assumed vars (which are calculated in function compute-master-manifest-variables) # CLOUD_CONFIG_OPT # CLOUD_CONFIG_VOLUME # CLOUD_CONFIG_MOUNT # DOCKER_REGISTRY function start-kube-controller-manager { echo "Start kubernetes controller-manager" prepare-log-file /var/log/kube-controller-manager.log # Calculate variables and assemble the command line. local params="${CONTROLLER_MANAGER_TEST_LOG_LEVEL:-"--v=2"} ${CONTROLLER_MANAGER_TEST_ARGS:-} ${CLOUD_CONFIG_OPT}" params+=" --cloud-provider=gce" params+=" --master=127.0.0.1:8080" params+=" --root-ca-file=/etc/srv/kubernetes/ca.crt" params+=" --service-account-private-key-file=/etc/srv/kubernetes/server.key" if [[ -n "${ENABLE_GARBAGE_COLLECTOR:-}" ]]; then params+=" --enable-garbage-collector=${ENABLE_GARBAGE_COLLECTOR}" fi if [[ -n "${INSTANCE_PREFIX:-}" ]]; then params+=" --cluster-name=${INSTANCE_PREFIX}" fi if [[ -n "${CLUSTER_IP_RANGE:-}" ]]; then params+=" --cluster-cidr=${CLUSTER_IP_RANGE}" fi if [[ -n "${SERVICE_CLUSTER_IP_RANGE:-}" ]]; then params+=" --service-cluster-ip-range=${SERVICE_CLUSTER_IP_RANGE}" fi if [[ "${NETWORK_PROVIDER:-}" == "kubenet" ]]; then params+=" --allocate-node-cidrs=true" elif [[ -n "${ALLOCATE_NODE_CIDRS:-}" ]]; then params+=" --allocate-node-cidrs=${ALLOCATE_NODE_CIDRS}" fi if [[ -n "${TERMINATED_POD_GC_THRESHOLD:-}" ]]; then params+=" --terminated-pod-gc-threshold=${TERMINATED_POD_GC_THRESHOLD}" fi if [[ -n "${FEATURE_GATES:-}" ]]; then params+=" --feature-gates=${FEATURE_GATES}" fi local -r kube_rc_docker_tag=$(cat /home/kubernetes/kube-docker-files/kube-controller-manager.docker_tag) local -r src_file="${KUBE_HOME}/kube-manifests/kubernetes/gci-trusty/kube-controller-manager.manifest" remove-salt-config-comments "${src_file}" # Evaluate variables. sed -i -e "s@{{srv_kube_path}}@/etc/srv/kubernetes@g" "${src_file}" sed -i -e "s@{{pillar\['kube_docker_registry'\]}}@${DOCKER_REGISTRY}@g" "${src_file}" sed -i -e "s@{{pillar\['kube-controller-manager_docker_tag'\]}}@${kube_rc_docker_tag}@g" "${src_file}" sed -i -e "s@{{params}}@${params}@g" "${src_file}" sed -i -e "s@{{cloud_config_mount}}@${CLOUD_CONFIG_MOUNT}@g" "${src_file}" sed -i -e "s@{{cloud_config_volume}}@${CLOUD_CONFIG_VOLUME}@g" "${src_file}" sed -i -e "s@{{additional_cloud_config_mount}}@@g" "${src_file}" sed -i -e "s@{{additional_cloud_config_volume}}@@g" "${src_file}" cp "${src_file}" /etc/kubernetes/manifests } # Starts kubernetes scheduler. # It prepares the log file, loads the docker image, calculates variables, sets them # in the manifest file, and then copies the manifest file to /etc/kubernetes/manifests. # # Assumed vars (which are calculated in compute-master-manifest-variables) # DOCKER_REGISTRY function start-kube-scheduler { echo "Start kubernetes scheduler" prepare-log-file /var/log/kube-scheduler.log # Calculate variables and set them in the manifest. params="${SCHEDULER_TEST_LOG_LEVEL:-"--v=2"} ${SCHEDULER_TEST_ARGS:-}" if [[ -n "${FEATURE_GATES:-}" ]]; then params+=" --feature-gates=${FEATURE_GATES}" fi if [[ -n "${SCHEDULING_ALGORITHM_PROVIDER:-}" ]]; then params+=" --algorithm-provider=${SCHEDULING_ALGORITHM_PROVIDER}" fi local -r kube_scheduler_docker_tag=$(cat "${KUBE_HOME}/kube-docker-files/kube-scheduler.docker_tag") # Remove salt comments and replace variables with values. local -r src_file="${KUBE_HOME}/kube-manifests/kubernetes/gci-trusty/kube-scheduler.manifest" remove-salt-config-comments "${src_file}" sed -i -e "s@{{params}}@${params}@g" "${src_file}" sed -i -e "s@{{pillar\['kube_docker_registry'\]}}@${DOCKER_REGISTRY}@g" "${src_file}" sed -i -e "s@{{pillar\['kube-scheduler_docker_tag'\]}}@${kube_scheduler_docker_tag}@g" "${src_file}" cp "${src_file}" /etc/kubernetes/manifests } # Starts cluster autoscaler. # Assumed vars (which are calculated in function compute-master-manifest-variables) # CLOUD_CONFIG_OPT # CLOUD_CONFIG_VOLUME # CLOUD_CONFIG_MOUNT function start-cluster-autoscaler { if [[ "${ENABLE_CLUSTER_AUTOSCALER:-}" == "true" ]]; then echo "Start kubernetes cluster autoscaler" prepare-log-file /var/log/cluster-autoscaler.log # Remove salt comments and replace variables with values local -r src_file="${KUBE_HOME}/kube-manifests/kubernetes/gci-trusty/cluster-autoscaler.manifest" remove-salt-config-comments "${src_file}" local params="${AUTOSCALER_MIG_CONFIG} ${CLOUD_CONFIG_OPT}" sed -i -e "s@{{params}}@${params}@g" "${src_file}" sed -i -e "s@{{cloud_config_mount}}@${CLOUD_CONFIG_MOUNT}@g" "${src_file}" sed -i -e "s@{{cloud_config_volume}}@${CLOUD_CONFIG_VOLUME}@g" "${src_file}" sed -i -e "s@{%.*%}@@g" "${src_file}" cp "${src_file}" /etc/kubernetes/manifests fi } # A helper function for copying addon manifests and set dir/files # permissions. # # $1: addon category under /etc/kubernetes # $2: manifest source dir function setup-addon-manifests { local -r src_dir="${KUBE_HOME}/kube-manifests/kubernetes/gci-trusty/$2" local -r dst_dir="/etc/kubernetes/$1/$2" if [[ ! -d "${dst_dir}" ]]; then mkdir -p "${dst_dir}" fi local files=$(find "${src_dir}" -maxdepth 1 -name "*.yaml") if [[ -n "${files}" ]]; then cp "${src_dir}/"*.yaml "${dst_dir}" fi files=$(find "${src_dir}" -maxdepth 1 -name "*.json") if [[ -n "${files}" ]]; then cp "${src_dir}/"*.json "${dst_dir}" fi files=$(find "${src_dir}" -maxdepth 1 -name "*.yaml.in") if [[ -n "${files}" ]]; then cp "${src_dir}/"*.yaml.in "${dst_dir}" fi chown -R root:root "${dst_dir}" chmod 755 "${dst_dir}" chmod 644 "${dst_dir}"/* } # Prepares the manifests of k8s addons, and starts the addon manager. function start-kube-addons { echo "Prepare kube-addons manifests and start kube addon manager" local -r src_dir="${KUBE_HOME}/kube-manifests/kubernetes/gci-trusty" local -r dst_dir="/etc/kubernetes/addons" # Set up manifests of other addons. if [[ "${ENABLE_CLUSTER_MONITORING:-}" == "influxdb" ]] || \ [[ "${ENABLE_CLUSTER_MONITORING:-}" == "google" ]] || \ [[ "${ENABLE_CLUSTER_MONITORING:-}" == "standalone" ]] || \ [[ "${ENABLE_CLUSTER_MONITORING:-}" == "googleinfluxdb" ]]; then local -r file_dir="cluster-monitoring/${ENABLE_CLUSTER_MONITORING}" setup-addon-manifests "addons" "${file_dir}" # Replace the salt configurations with variable values. base_metrics_memory="140Mi" metrics_memory="${base_metrics_memory}" base_eventer_memory="190Mi" base_metrics_cpu="80m" metrics_cpu="${base_metrics_cpu}" eventer_memory="${base_eventer_memory}" nanny_memory="90Mi" local -r metrics_memory_per_node="4" local -r metrics_cpu_per_node="0.5" local -r eventer_memory_per_node="500" local -r nanny_memory_per_node="200" if [[ -n "${NUM_NODES:-}" && "${NUM_NODES}" -ge 1 ]]; then num_kube_nodes="$((${NUM_NODES}+1))" metrics_memory="$((${num_kube_nodes} * ${metrics_memory_per_node} + 200))Mi" eventer_memory="$((${num_kube_nodes} * ${eventer_memory_per_node} + 200 * 1024))Ki" nanny_memory="$((${num_kube_nodes} * ${nanny_memory_per_node} + 90 * 1024))Ki" metrics_cpu=$(echo - | awk "{print ${num_kube_nodes} * ${metrics_cpu_per_node} + 80}")m fi controller_yaml="${dst_dir}/${file_dir}" if [[ "${ENABLE_CLUSTER_MONITORING:-}" == "googleinfluxdb" ]]; then controller_yaml="${controller_yaml}/heapster-controller-combined.yaml" else controller_yaml="${controller_yaml}/heapster-controller.yaml" fi remove-salt-config-comments "${controller_yaml}" sed -i -e "s@{{ *base_metrics_memory *}}@${base_metrics_memory}@g" "${controller_yaml}" sed -i -e "s@{{ *metrics_memory *}}@${metrics_memory}@g" "${controller_yaml}" sed -i -e "s@{{ *base_metrics_cpu *}}@${base_metrics_cpu}@g" "${controller_yaml}" sed -i -e "s@{{ *metrics_cpu *}}@${metrics_cpu}@g" "${controller_yaml}" sed -i -e "s@{{ *base_eventer_memory *}}@${base_eventer_memory}@g" "${controller_yaml}" sed -i -e "s@{{ *eventer_memory *}}@${eventer_memory}@g" "${controller_yaml}" sed -i -e "s@{{ *metrics_memory_per_node *}}@${metrics_memory_per_node}@g" "${controller_yaml}" sed -i -e "s@{{ *eventer_memory_per_node *}}@${eventer_memory_per_node}@g" "${controller_yaml}" sed -i -e "s@{{ *nanny_memory *}}@${nanny_memory}@g" "${controller_yaml}" sed -i -e "s@{{ *metrics_cpu_per_node *}}@${metrics_cpu_per_node}@g" "${controller_yaml}" fi if [[ "${ENABLE_CLUSTER_DNS:-}" == "true" ]]; then setup-addon-manifests "addons" "dns" local -r dns_rc_file="${dst_dir}/dns/skydns-rc.yaml" local -r dns_svc_file="${dst_dir}/dns/skydns-svc.yaml" mv "${dst_dir}/dns/skydns-rc.yaml.in" "${dns_rc_file}" mv "${dst_dir}/dns/skydns-svc.yaml.in" "${dns_svc_file}" # Replace the salt configurations with variable values. sed -i -e "s@{{ *pillar\['dns_replicas'\] *}}@${DNS_REPLICAS}@g" "${dns_rc_file}" sed -i -e "s@{{ *pillar\['dns_domain'\] *}}@${DNS_DOMAIN}@g" "${dns_rc_file}" sed -i -e "s@{{ *pillar\['dns_server'\] *}}@${DNS_SERVER_IP}@g" "${dns_svc_file}" if [[ "${FEDERATION:-}" == "true" ]]; then local federations_domain_map="${FEDERATIONS_DOMAIN_MAP:-}" if [[ -z "${federations_domain_map}" && -n "${FEDERATION_NAME:-}" && -n "${DNS_ZONE_NAME:-}" ]]; then federations_domain_map="${FEDERATION_NAME}=${DNS_ZONE_NAME}" fi if [[ -n "${federations_domain_map}" ]]; then sed -i -e "s@{{ *pillar\['federations_domain_map'\] *}}@- --federations=${federations_domain_map}@g" "${dns_rc_file}" else sed -i -e "/{{ *pillar\['federations_domain_map'\] *}}/d" "${dns_rc_file}" fi else sed -i -e "/{{ *pillar\['federations_domain_map'\] *}}/d" "${dns_rc_file}" fi fi if [[ "${ENABLE_CLUSTER_REGISTRY:-}" == "true" ]]; then setup-addon-manifests "addons" "registry" local -r registry_pv_file="${dst_dir}/registry/registry-pv.yaml" local -r registry_pvc_file="${dst_dir}/registry/registry-pvc.yaml" mv "${dst_dir}/registry/registry-pv.yaml.in" "${registry_pv_file}" mv "${dst_dir}/registry/registry-pvc.yaml.in" "${registry_pvc_file}" # Replace the salt configurations with variable values. remove-salt-config-comments "${controller_yaml}" sed -i -e "s@{{ *pillar\['cluster_registry_disk_size'\] *}}@${CLUSTER_REGISTRY_DISK_SIZE}@g" "${registry_pv_file}" sed -i -e "s@{{ *pillar\['cluster_registry_disk_size'\] *}}@${CLUSTER_REGISTRY_DISK_SIZE}@g" "${registry_pvc_file}" sed -i -e "s@{{ *pillar\['cluster_registry_disk_name'\] *}}@${CLUSTER_REGISTRY_DISK}@g" "${registry_pvc_file}" fi if [[ "${ENABLE_NODE_LOGGING:-}" == "true" ]] && \ [[ "${LOGGING_DESTINATION:-}" == "elasticsearch" ]] && \ [[ "${ENABLE_CLUSTER_LOGGING:-}" == "true" ]]; then setup-addon-manifests "addons" "fluentd-elasticsearch" fi if [[ "${ENABLE_CLUSTER_UI:-}" == "true" ]]; then setup-addon-manifests "addons" "dashboard" fi if [[ "${ENABLE_NODE_PROBLEM_DETECTOR:-}" == "true" ]]; then setup-addon-manifests "addons" "node-problem-detector" fi if echo "${ADMISSION_CONTROL:-}" | grep -q "LimitRanger"; then setup-addon-manifests "admission-controls" "limit-range" fi if [[ "${NETWORK_POLICY_PROVIDER:-}" == "calico" ]]; then setup-addon-manifests "addons" "calico-policy-controller" fi # Place addon manager pod manifest. cp "${src_dir}/kube-addon-manager.yaml" /etc/kubernetes/manifests } # Starts a fluentd static pod for logging. function start-fluentd { echo "Start fluentd pod" if [[ "${ENABLE_NODE_LOGGING:-}" == "true" ]]; then if [[ "${LOGGING_DESTINATION:-}" == "gcp" ]]; then cp "${KUBE_HOME}/kube-manifests/kubernetes/gci-trusty/gci/fluentd-gcp.yaml" /etc/kubernetes/manifests/ elif [[ "${LOGGING_DESTINATION:-}" == "elasticsearch" && "${KUBERNETES_MASTER:-}" != "true" ]]; then # Running fluentd-es on the master is pointless, as it can't communicate # with elasticsearch from there in the default configuration. cp "${KUBE_HOME}/kube-manifests/kubernetes/fluentd-es.yaml" /etc/kubernetes/manifests/ fi fi } # Starts an image-puller - used in test clusters. function start-image-puller { echo "Start image-puller" cp "${KUBE_HOME}/kube-manifests/kubernetes/gci-trusty/e2e-image-puller.manifest" \ /etc/kubernetes/manifests/ } # Starts kube-registry proxy function start-kube-registry-proxy { echo "Start kube-registry-proxy" cp "${KUBE_HOME}/kube-manifests/kubernetes/kube-registry-proxy.yaml" /etc/kubernetes/manifests } # Starts a l7 loadbalancing controller for ingress. function start-lb-controller { if [[ "${ENABLE_L7_LOADBALANCING:-}" == "glbc" ]]; then echo "Start GCE L7 pod" prepare-log-file /var/log/glbc.log setup-addon-manifests "addons" "cluster-loadbalancing/glbc" cp "${KUBE_HOME}/kube-manifests/kubernetes/gci-trusty/glbc.manifest" \ /etc/kubernetes/manifests/ fi } # Starts rescheduler. function start-rescheduler { if [[ "${ENABLE_RESCHEDULER:-}" == "true" ]]; then echo "Start Rescheduler" prepare-log-file /var/log/rescheduler.log cp "${KUBE_HOME}/kube-manifests/kubernetes/gci-trusty/rescheduler.manifest" \ /etc/kubernetes/manifests/ fi } # Setup working directory for kubelet. function setup-kubelet-dir { echo "Making /var/lib/kubelet executable for kubelet" mount -B /var/lib/kubelet /var/lib/kubelet/ mount -B -o remount,exec,suid,dev /var/lib/kubelet } function reset-motd { # kubelet is installed both on the master and nodes, and the version is easy to parse (unlike kubectl) local -r version="$("${KUBE_HOME}"/bin/kubelet --version=true | cut -f2 -d " ")" # This logic grabs either a release tag (v1.2.1 or v1.2.1-alpha.1), # or the git hash that's in the build info. local gitref="$(echo "${version}" | sed -r "s/(v[0-9]+\.[0-9]+\.[0-9]+)(-[a-z]+\.[0-9]+)?.*/\1\2/g")" local devel="" if [[ "${gitref}" != "${version}" ]]; then devel=" Note: This looks like a development version, which might not be present on GitHub. If it isn't, the closest tag is at: https://github.com/kubernetes/kubernetes/tree/${gitref} " gitref="${version//*+/}" fi cat > /etc/motd < /etc/profile.d/kube_env.sh } ########### Main Function ########### echo "Start to configure instance for kubernetes" KUBE_HOME="/home/kubernetes" if [[ ! -e "${KUBE_HOME}/kube-env" ]]; then echo "The ${KUBE_HOME}/kube-env file does not exist!! Terminate cluster initialization." exit 1 fi source "${KUBE_HOME}/kube-env" if [[ -n "${KUBE_USER:-}" ]]; then if ! [[ "${KUBE_USER}" =~ ^[-._@a-zA-Z0-9]+$ ]]; then echo "Bad KUBE_USER format." exit 1 fi fi setup-os-params config-ip-firewall create-dirs setup-kubelet-dir ensure-local-ssds setup-logrotate if [[ "${KUBERNETES_MASTER:-}" == "true" ]]; then mount-master-pd create-master-auth create-master-kubelet-auth else create-kubelet-kubeconfig create-kubeproxy-kubeconfig fi override-kubectl assemble-docker-flags load-docker-images start-kubelet if [[ "${KUBERNETES_MASTER:-}" == "true" ]]; then compute-master-manifest-variables start-etcd-servers start-etcd-empty-dir-cleanup-pod start-kube-apiserver start-kube-controller-manager start-kube-scheduler start-kube-addons start-cluster-autoscaler start-lb-controller start-rescheduler else start-kube-proxy # Kube-registry-proxy. if [[ "${ENABLE_CLUSTER_REGISTRY:-}" == "true" ]]; then start-kube-registry-proxy fi if [[ "${PREPULL_E2E_IMAGES:-}" == "true" ]]; then start-image-puller fi fi start-fluentd reset-motd echo "Done for the configuration for kubernetes"