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ea0978f4f2
This feature adds Juju provisioning to the kube-up script. It currently
parses out the pre-requisits on debian/ubuntu based systems and installs
them if they are missing.
From there we followed the integration path that was found in the
libvirt-coreos path, implementing the methods found in the boilerplate
and calling juju service calls. There are a few "arbitrary sleeps" in
the code to allow the cloud provider to settle and properly deploy.
These are work-around cases from the script executing faster than juju
was able to communicate from the state server to subsequent nodes. I
left comments inline at these points.
To exercise this:
export KUBERNETES_PROVIDER=juju
cluster/kube-up.sh
It will spin up a ref arch with 1 Kubernetes Master, 2 minions, and run
the cluster validation checks against the deployment. Bridging the gap
between the juju specific bits and the upstream recommended guides for
getting started with Juju.
To note, if you do not have a "current environment" set in Juju, it will
spin up the quickstart integration wizard in interactive mode, allowing
you to configure juju, and add the proper provider/use it. Otherwise it
assumes you're in the provider you wish to use, and will deploy there.
106 lines
4.0 KiB
Bash
Executable File
106 lines
4.0 KiB
Bash
Executable File
#!/bin/bash
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# Copyright 2014 Google Inc. All rights reserved.
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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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# Bring up a Kubernetes cluster.
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#
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# If the full release name (gs://<bucket>/<release>) is passed in then we take
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# that directly. If not then we assume we are doing development stuff and take
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# the defaults in the release config.
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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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KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
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source "${KUBE_ROOT}/cluster/kube-env.sh"
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source "${KUBE_ROOT}/cluster/${KUBERNETES_PROVIDER}/util.sh"
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get-password
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detect-master > /dev/null
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detect-minions > /dev/null
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MINIONS_FILE=/tmp/minions-$$
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trap 'rm -rf "${MINIONS_FILE}"' EXIT
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# Make several attempts to deal with slow cluster birth.
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attempt=0
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while true; do
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"${KUBE_ROOT}/cluster/kubectl.sh" get minions -o template -t $'{{range.items}}{{.id}}\n{{end}}' > "${MINIONS_FILE}"
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found=$(grep -c . "${MINIONS_FILE}")
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if [[ ${found} == "${NUM_MINIONS}" ]]; then
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break
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else
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if (( attempt > 5 )); then
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echo -e "${color_red}Detected ${found} nodes out of ${NUM_MINIONS}. Your cluster may not be working. ${color_norm}"
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cat -n "${MINIONS_FILE}"
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exit 2
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fi
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attempt=$((attempt+1))
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sleep 30
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fi
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done
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echo "Found ${found} nodes."
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cat -n "${MINIONS_FILE}"
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# On vSphere, use minion IPs as their names
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if [[ "${KUBERNETES_PROVIDER}" == "vsphere" ]] || [[ "${KUBERNETES_PROVIDER}" == "vagrant" ]] || [[ "${KUBERNETES_PROVIDER}" == "libvirt-coreos" ]] || [[ "${KUBERNETES_PROVIDER}" == "juju" ]] ; then
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MINION_NAMES=("${KUBE_MINION_IP_ADDRESSES[@]}")
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fi
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for (( i=0; i<${#MINION_NAMES[@]}; i++)); do
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# Grep returns an exit status of 1 when line is not found, so we need the : to always return a 0 exit status
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count=$(grep -c "${MINION_NAMES[$i]}" "${MINIONS_FILE}") || :
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if [[ "${count}" == "0" ]]; then
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echo -e "${color_red}Failed to find ${MINION_NAMES[$i]}, cluster is probably broken.${color_norm}"
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cat -n "${MINIONS_FILE}"
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exit 1
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fi
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name="${MINION_NAMES[$i]}"
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if [ "$KUBERNETES_PROVIDER" != "vsphere" ] && [ "$KUBERNETES_PROVIDER" != "vagrant" ] && [ "$KUBERNETES_PROVIDER" != "libvirt-coreos" ] && [ "$KUBERNETES_PROVIDER" != "juju" ]; then
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# Grab fully qualified name
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name=$(grep "${MINION_NAMES[$i]}\." "${MINIONS_FILE}")
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fi
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# Make sure the kubelet is healthy.
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# Make several attempts to deal with slow cluster birth.
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attempt=0
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while true; do
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echo -n "Attempt $((attempt+1)) at checking Kubelet installation on node ${MINION_NAMES[$i]} ..."
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if [ "$KUBERNETES_PROVIDER" != "libvirt-coreos" ] && [ "$KUBERNETES_PROVIDER" != "juju" ]; then
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curl_output=$(curl -s --insecure --user "${KUBE_USER}:${KUBE_PASSWORD}" \
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"https://${KUBE_MASTER_IP}/api/v1beta1/proxy/minions/${name}/healthz")
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else
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curl_output=$(curl -s \
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"http://${KUBE_MASTER_IP}:8080/api/v1beta1/proxy/minions/${name}/healthz")
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fi
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if [[ "${curl_output}" != "ok" ]]; then
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if (( attempt > 5 )); then
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echo
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echo -e "${color_red}Kubelet failed to install on node ${MINION_NAMES[$i]}. Your cluster is unlikely to work correctly."
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echo -e "Please run ./cluster/kube-down.sh and re-create the cluster. (sorry!)${color_norm}"
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exit 1
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fi
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else
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echo -e " ${color_green}[working]${color_norm}"
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break
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fi
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echo -e " ${color_yellow}[not working yet]${color_norm}"
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attempt=$((attempt+1))
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sleep 30
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done
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done
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echo -e "${color_green}Cluster validation succeeded${color_norm}"
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