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244 lines
12 KiB
Bash
Executable File
244 lines
12 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright 2015 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Script that creates a Kubemark cluster for any given cloud provider.
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set -o errexit
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set -o nounset
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set -o pipefail
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TMP_ROOT="$(dirname "${BASH_SOURCE[@]}")/../.."
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KUBE_ROOT=$(readlink -e "${TMP_ROOT}" 2> /dev/null || perl -MCwd -e 'print Cwd::abs_path shift' "${TMP_ROOT}")
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source "${KUBE_ROOT}/test/kubemark/skeleton/util.sh"
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source "${KUBE_ROOT}/test/kubemark/cloud-provider-config.sh"
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source "${KUBE_ROOT}/test/kubemark/${CLOUD_PROVIDER}/util.sh"
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source "${KUBE_ROOT}/cluster/kubemark/${CLOUD_PROVIDER}/config-default.sh"
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if [[ -f "${KUBE_ROOT}/test/kubemark/${CLOUD_PROVIDER}/startup.sh" ]] ; then
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source "${KUBE_ROOT}/test/kubemark/${CLOUD_PROVIDER}/startup.sh"
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fi
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source "${KUBE_ROOT}/cluster/kubemark/util.sh"
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KUBECTL="${KUBE_ROOT}/cluster/kubectl.sh"
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KUBEMARK_DIRECTORY="${KUBE_ROOT}/test/kubemark"
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RESOURCE_DIRECTORY="${KUBEMARK_DIRECTORY}/resources"
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LOCAL_KUBECONFIG="${RESOURCE_DIRECTORY}/kubeconfig.kubemark"
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INTERNAL_KUBECONFIG="${RESOURCE_DIRECTORY}/kubeconfig-internal.kubemark"
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# Generate a random 6-digit alphanumeric tag for the kubemark image.
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# Used to uniquify image builds across different invocations of this script.
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KUBEMARK_IMAGE_TAG=$(head /dev/urandom | tr -dc 'a-z0-9' | fold -w 6 | head -n 1)
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# Create a docker image for hollow-node and upload it to the appropriate docker registry.
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function create-and-upload-hollow-node-image {
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authenticate-docker
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KUBEMARK_IMAGE_REGISTRY="${KUBEMARK_IMAGE_REGISTRY:-${CONTAINER_REGISTRY}/${PROJECT}}"
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if [[ "${KUBEMARK_BAZEL_BUILD:-}" =~ ^[yY]$ ]]; then
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# Build+push the image through bazel.
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touch WORKSPACE # Needed for bazel.
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build_cmd=("bazel" "run" "//cluster/images/kubemark:push" "--define" "REGISTRY=${KUBEMARK_IMAGE_REGISTRY}" "--define" "IMAGE_TAG=${KUBEMARK_IMAGE_TAG}")
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run-cmd-with-retries "${build_cmd[@]}"
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else
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# Build+push the image through makefile.
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build_cmd=("make" "${KUBEMARK_IMAGE_MAKE_TARGET}")
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MAKE_DIR="${KUBE_ROOT}/cluster/images/kubemark"
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KUBEMARK_BIN="$(kube::util::find-binary-for-platform kubemark linux/amd64)"
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if [[ -z "${KUBEMARK_BIN}" ]]; then
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echo 'Cannot find cmd/kubemark binary'
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exit 1
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fi
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echo "Copying kubemark binary to ${MAKE_DIR}"
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cp "${KUBEMARK_BIN}" "${MAKE_DIR}"
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CURR_DIR=$(pwd)
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cd "${MAKE_DIR}"
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REGISTRY=${KUBEMARK_IMAGE_REGISTRY} IMAGE_TAG=${KUBEMARK_IMAGE_TAG} run-cmd-with-retries "${build_cmd[@]}"
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rm kubemark
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cd "$CURR_DIR"
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fi
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echo "Created and uploaded the kubemark hollow-node image to docker registry."
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# Cleanup the kubemark image after the script exits.
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if [[ "${CLEANUP_KUBEMARK_IMAGE:-}" == "true" ]]; then
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trap delete-kubemark-image EXIT
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fi
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}
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function delete-kubemark-image {
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delete-image "${KUBEMARK_IMAGE_REGISTRY}/kubemark:${KUBEMARK_IMAGE_TAG}"
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}
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# Generate secret and configMap for the hollow-node pods to work, prepare
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# manifests of the hollow-node and heapster replication controllers from
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# templates, and finally create these resources through kubectl.
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function create-kube-hollow-node-resources {
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# Create kubemark namespace.
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"${KUBECTL}" create -f "${RESOURCE_DIRECTORY}/kubemark-ns.json"
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# Create configmap for configuring hollow- kubelet, proxy and npd.
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"${KUBECTL}" create configmap "node-configmap" --namespace="kubemark" \
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--from-literal=content.type="${TEST_CLUSTER_API_CONTENT_TYPE}" \
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--from-file=kernel.monitor="${RESOURCE_DIRECTORY}/kernel-monitor.json"
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# Create secret for passing kubeconfigs to kubelet, kubeproxy and npd.
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# It's bad that all component shares the same kubeconfig.
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# TODO(https://github.com/kubernetes/kubernetes/issues/79883): Migrate all components to separate credentials.
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"${KUBECTL}" create secret generic "kubeconfig" --type=Opaque --namespace="kubemark" \
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--from-file=kubelet.kubeconfig="${HOLLOWNODE_KUBECONFIG}" \
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--from-file=kubeproxy.kubeconfig="${HOLLOWNODE_KUBECONFIG}" \
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--from-file=npd.kubeconfig="${HOLLOWNODE_KUBECONFIG}" \
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--from-file=heapster.kubeconfig="${HOLLOWNODE_KUBECONFIG}" \
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--from-file=cluster_autoscaler.kubeconfig="${HOLLOWNODE_KUBECONFIG}" \
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--from-file=dns.kubeconfig="${HOLLOWNODE_KUBECONFIG}"
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# Create addon pods.
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# Heapster.
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mkdir -p "${RESOURCE_DIRECTORY}/addons"
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sed "s@{{MASTER_IP}}@${MASTER_IP}@g" "${RESOURCE_DIRECTORY}/heapster_template.json" > "${RESOURCE_DIRECTORY}/addons/heapster.json"
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metrics_mem_per_node=4
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metrics_mem=$((200 + metrics_mem_per_node*NUM_NODES))
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sed -i'' -e "s@{{METRICS_MEM}}@${metrics_mem}@g" "${RESOURCE_DIRECTORY}/addons/heapster.json"
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metrics_cpu_per_node_numerator=${NUM_NODES}
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metrics_cpu_per_node_denominator=2
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metrics_cpu=$((80 + metrics_cpu_per_node_numerator / metrics_cpu_per_node_denominator))
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sed -i'' -e "s@{{METRICS_CPU}}@${metrics_cpu}@g" "${RESOURCE_DIRECTORY}/addons/heapster.json"
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eventer_mem_per_node=500
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eventer_mem=$((200 * 1024 + eventer_mem_per_node*NUM_NODES))
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sed -i'' -e "s@{{EVENTER_MEM}}@${eventer_mem}@g" "${RESOURCE_DIRECTORY}/addons/heapster.json"
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# Cluster Autoscaler.
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if [[ "${ENABLE_KUBEMARK_CLUSTER_AUTOSCALER:-}" == "true" ]]; then
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echo "Setting up Cluster Autoscaler"
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KUBEMARK_AUTOSCALER_MIG_NAME="${KUBEMARK_AUTOSCALER_MIG_NAME:-${NODE_INSTANCE_PREFIX}-group}"
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KUBEMARK_AUTOSCALER_MIN_NODES="${KUBEMARK_AUTOSCALER_MIN_NODES:-0}"
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KUBEMARK_AUTOSCALER_MAX_NODES="${KUBEMARK_AUTOSCALER_MAX_NODES:-10}"
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NUM_NODES=${KUBEMARK_AUTOSCALER_MAX_NODES}
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echo "Setting maximum cluster size to ${NUM_NODES}."
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KUBEMARK_MIG_CONFIG="autoscaling.k8s.io/nodegroup: ${KUBEMARK_AUTOSCALER_MIG_NAME}"
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sed "s/{{master_ip}}/${MASTER_IP}/g" "${RESOURCE_DIRECTORY}/cluster-autoscaler_template.json" > "${RESOURCE_DIRECTORY}/addons/cluster-autoscaler.json"
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sed -i'' -e "s@{{kubemark_autoscaler_mig_name}}@${KUBEMARK_AUTOSCALER_MIG_NAME}@g" "${RESOURCE_DIRECTORY}/addons/cluster-autoscaler.json"
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sed -i'' -e "s@{{kubemark_autoscaler_min_nodes}}@${KUBEMARK_AUTOSCALER_MIN_NODES}@g" "${RESOURCE_DIRECTORY}/addons/cluster-autoscaler.json"
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sed -i'' -e "s@{{kubemark_autoscaler_max_nodes}}@${KUBEMARK_AUTOSCALER_MAX_NODES}@g" "${RESOURCE_DIRECTORY}/addons/cluster-autoscaler.json"
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fi
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# Kube DNS.
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if [[ "${ENABLE_KUBEMARK_KUBE_DNS:-}" == "true" ]]; then
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echo "Setting up kube-dns"
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sed "s@{{dns_domain}}@${KUBE_DNS_DOMAIN}@g" "${RESOURCE_DIRECTORY}/kube_dns_template.yaml" > "${RESOURCE_DIRECTORY}/addons/kube_dns.yaml"
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fi
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"${KUBECTL}" create -f "${RESOURCE_DIRECTORY}/addons" --namespace="kubemark"
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# Create the replication controller for hollow-nodes.
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# We allow to override the NUM_REPLICAS when running Cluster Autoscaler.
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NUM_REPLICAS=${NUM_REPLICAS:-${NUM_NODES}}
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sed "s@{{numreplicas}}@${NUM_REPLICAS}@g" "${RESOURCE_DIRECTORY}/hollow-node_template.yaml" > "${RESOURCE_DIRECTORY}/hollow-node.yaml"
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proxy_cpu=20
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if [ "${NUM_NODES}" -gt 1000 ]; then
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proxy_cpu=50
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fi
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proxy_cpu=${KUBEMARK_HOLLOW_PROXY_MILLICPU:-$proxy_cpu}
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proxy_mem_per_node=${KUBEMARK_HOLLOW_PROXY_MEM_PER_NODE_KB:-50}
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proxy_mem=$((100 * 1024 + proxy_mem_per_node*NUM_NODES))
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hollow_node_labels=${HOLLOW_NODE_LABELS:-$(calculate-node-labels)}
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hollow_kubelet_params=$(eval "for param in ${HOLLOW_KUBELET_TEST_ARGS:-}; do echo -n \\\"\$param\\\",; done")
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hollow_kubelet_params=${hollow_kubelet_params%?}
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hollow_proxy_params=$(eval "for param in ${HOLLOW_PROXY_TEST_ARGS:-}; do echo -n \\\"\$param\\\",; done")
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hollow_proxy_params=${hollow_proxy_params%?}
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sed -i'' -e "s@{{hollow_kubelet_millicpu}}@${KUBEMARK_HOLLOW_KUBELET_MILLICPU:-40}@g" "${RESOURCE_DIRECTORY}/hollow-node.yaml"
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sed -i'' -e "s@{{hollow_kubelet_mem_Ki}}@${KUBEMARK_HOLLOW_KUBELET_MEM_KB:-$((100*1024))}@g" "${RESOURCE_DIRECTORY}/hollow-node.yaml"
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sed -i'' -e "s@{{hollow_proxy_millicpu}}@${proxy_cpu}@g" "${RESOURCE_DIRECTORY}/hollow-node.yaml"
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sed -i'' -e "s@{{hollow_proxy_mem_Ki}}@${proxy_mem}@g" "${RESOURCE_DIRECTORY}/hollow-node.yaml"
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sed -i'' -e "s@{{npd_millicpu}}@${KUBEMARK_NPD_MILLICPU:-20}@g" "${RESOURCE_DIRECTORY}/hollow-node.yaml"
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sed -i'' -e "s@{{npd_mem_Ki}}@${KUBEMARK_NPD_MEM_KB:-$((20*1024))}@g" "${RESOURCE_DIRECTORY}/hollow-node.yaml"
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sed -i'' -e "s@{{kubemark_image_registry}}@${KUBEMARK_IMAGE_REGISTRY}@g" "${RESOURCE_DIRECTORY}/hollow-node.yaml"
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sed -i'' -e "s@{{kubemark_image_tag}}@${KUBEMARK_IMAGE_TAG}@g" "${RESOURCE_DIRECTORY}/hollow-node.yaml"
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sed -i'' -e "s@{{master_ip}}@${MASTER_IP}@g" "${RESOURCE_DIRECTORY}/hollow-node.yaml"
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sed -i'' -e "s@{{hollow_node_labels}}@${hollow_node_labels}@g" "${RESOURCE_DIRECTORY}/hollow-node.yaml"
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sed -i'' -e "s@{{hollow_kubelet_params}}@${hollow_kubelet_params}@g" "${RESOURCE_DIRECTORY}/hollow-node.yaml"
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sed -i'' -e "s@{{hollow_proxy_params}}@${hollow_proxy_params}@g" "${RESOURCE_DIRECTORY}/hollow-node.yaml"
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sed -i'' -e "s@{{kubemark_mig_config}}@${KUBEMARK_MIG_CONFIG:-}@g" "${RESOURCE_DIRECTORY}/hollow-node.yaml"
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"${KUBECTL}" create -f "${RESOURCE_DIRECTORY}/hollow-node.yaml" --namespace="kubemark"
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echo "Created secrets, configMaps, replication-controllers required for hollow-nodes."
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}
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# Wait until all hollow-nodes are running or there is a timeout.
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function wait-for-hollow-nodes-to-run-or-timeout {
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echo -n "Waiting for all hollow-nodes to become Running"
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start=$(date +%s)
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nodes=$("${KUBECTL}" --kubeconfig="${LOCAL_KUBECONFIG}" get node 2> /dev/null) || true
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ready=$(($(echo "${nodes}" | grep -vc "NotReady") - 1))
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until [[ "${ready}" -ge "${NUM_REPLICAS}" ]]; do
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echo -n "."
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sleep 1
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now=$(date +%s)
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# Fail it if it already took more than 30 minutes.
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if [ $((now - start)) -gt 1800 ]; then
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echo ""
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# shellcheck disable=SC2154 # Color defined in sourced script
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echo -e "${color_red} Timeout waiting for all hollow-nodes to become Running. ${color_norm}"
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# Try listing nodes again - if it fails it means that API server is not responding
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if "${KUBECTL}" --kubeconfig="${LOCAL_KUBECONFIG}" get node &> /dev/null; then
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echo "Found only ${ready} ready hollow-nodes while waiting for ${NUM_NODES}."
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else
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echo "Got error while trying to list hollow-nodes. Probably API server is down."
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fi
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pods=$("${KUBECTL}" get pods -l name=hollow-node --namespace=kubemark) || true
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running=$(($(echo "${pods}" | grep -c "Running")))
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echo "${running} hollow-nodes are reported as 'Running'"
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not_running=$(($(echo "${pods}" | grep -vc "Running") - 1))
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echo "${not_running} hollow-nodes are reported as NOT 'Running'"
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echo "${pods}" | grep -v Running
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exit 1
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fi
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nodes=$("${KUBECTL}" --kubeconfig="${LOCAL_KUBECONFIG}" get node 2> /dev/null) || true
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ready=$(($(echo "${nodes}" | grep -vc "NotReady") - 1))
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done
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# shellcheck disable=SC2154 # Color defined in sourced script
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echo -e "${color_green} Done!${color_norm}"
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}
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############################### Main Function ########################################
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# Setup for hollow-nodes.
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function start-hollow-nodes {
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# shellcheck disable=SC2154 # Color defined in sourced script
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echo -e "${color_yellow}STARTING SETUP FOR HOLLOW-NODES${color_norm}"
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create-and-upload-hollow-node-image
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create-kube-hollow-node-resources
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wait-for-hollow-nodes-to-run-or-timeout
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}
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detect-project &> /dev/null
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create-kubemark-master
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if [ -f "${INTERNAL_KUBECONFIG}" ]; then
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HOLLOWNODE_KUBECONFIG="${INTERNAL_KUBECONFIG}"
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else
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HOLLOWNODE_KUBECONFIG="${LOCAL_KUBECONFIG}"
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fi
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MASTER_IP=$(grep server "${HOLLOWNODE_KUBECONFIG}" | awk -F "/" '{print $3}')
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start-hollow-nodes
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echo ""
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echo "Master IP: ${MASTER_IP}"
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echo "Kubeconfig for kubemark master is written in ${LOCAL_KUBECONFIG}"
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