forked from barak/tarpoon
Add glide.yaml and vendor deps
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302
vendor/k8s.io/kubernetes/cluster/centos/util.sh
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vendored
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vendor/k8s.io/kubernetes/cluster/centos/util.sh
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#!/bin/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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# A library of helper functions that each provider hosting Kubernetes must implement to use cluster/kube-*.sh scripts.
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# exit on any error
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set -e
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SSH_OPTS="-oStrictHostKeyChecking=no -oUserKnownHostsFile=/dev/null -oLogLevel=ERROR -C"
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# Use the config file specified in $KUBE_CONFIG_FILE, or default to
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# config-default.sh.
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KUBE_ROOT=$(dirname "${BASH_SOURCE}")/../..
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readonly ROOT=$(dirname "${BASH_SOURCE}")
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source "${ROOT}/${KUBE_CONFIG_FILE:-"config-default.sh"}"
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source "$KUBE_ROOT/cluster/common.sh"
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KUBECTL_PATH=${KUBE_ROOT}/cluster/centos/binaries/kubectl
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# Directory to be used for master and node provisioning.
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KUBE_TEMP="~/kube_temp"
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# Must ensure that the following ENV vars are set
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function detect-master() {
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KUBE_MASTER=$MASTER
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KUBE_MASTER_IP=${MASTER#*@}
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echo "KUBE_MASTER_IP: ${KUBE_MASTER_IP}" 1>&2
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echo "KUBE_MASTER: ${MASTER}" 1>&2
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}
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# Get node IP addresses and store in KUBE_NODE_IP_ADDRESSES[]
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function detect-nodes() {
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KUBE_NODE_IP_ADDRESSES=()
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for node in ${NODES}; do
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KUBE_NODE_IP_ADDRESSES+=("${node#*@}")
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done
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echo "KUBE_NODE_IP_ADDRESSES: [${KUBE_NODE_IP_ADDRESSES[*]}]" 1>&2
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}
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# Verify prereqs on host machine
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function verify-prereqs() {
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local rc
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rc=0
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ssh-add -L 1> /dev/null 2> /dev/null || rc="$?"
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# "Could not open a connection to your authentication agent."
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if [[ "${rc}" -eq 2 ]]; then
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eval "$(ssh-agent)" > /dev/null
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trap-add "kill ${SSH_AGENT_PID}" EXIT
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fi
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rc=0
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ssh-add -L 1> /dev/null 2> /dev/null || rc="$?"
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# "The agent has no identities."
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if [[ "${rc}" -eq 1 ]]; then
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# Try adding one of the default identities, with or without passphrase.
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ssh-add || true
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fi
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rc=0
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# Expect at least one identity to be available.
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if ! ssh-add -L 1> /dev/null 2> /dev/null; then
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echo "Could not find or add an SSH identity."
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echo "Please start ssh-agent, add your identity, and retry."
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exit 1
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fi
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}
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# Install handler for signal trap
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function trap-add {
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local handler="$1"
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local signal="${2-EXIT}"
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local cur
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cur="$(eval "sh -c 'echo \$3' -- $(trap -p ${signal})")"
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if [[ -n "${cur}" ]]; then
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handler="${cur}; ${handler}"
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fi
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trap "${handler}" ${signal}
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}
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# Validate a kubernetes cluster
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function validate-cluster() {
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# by default call the generic validate-cluster.sh script, customizable by
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# any cluster provider if this does not fit.
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set +e
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"${KUBE_ROOT}/cluster/validate-cluster.sh"
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if [[ "$?" -ne "0" ]]; then
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troubleshoot-master
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for node in ${NODES}; do
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troubleshoot-node ${node}
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done
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exit 1
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fi
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set -e
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}
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# Instantiate a kubernetes cluster
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function kube-up() {
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provision-master
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for node in ${NODES}; do
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provision-node ${node}
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done
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detect-master
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# set CONTEXT and KUBE_SERVER values for create-kubeconfig() and get-password()
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export CONTEXT="centos"
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export KUBE_SERVER="http://${KUBE_MASTER_IP}:8080"
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source "${KUBE_ROOT}/cluster/common.sh"
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# set kubernetes user and password
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get-password
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create-kubeconfig
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}
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# Delete a kubernetes cluster
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function kube-down() {
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tear-down-master
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for node in ${NODES}; do
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tear-down-node ${node}
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done
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}
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function troubleshoot-master() {
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# Troubleshooting on master if all required daemons are active.
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echo "[INFO] Troubleshooting on master ${MASTER}"
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local -a required_daemon=("kube-apiserver" "kube-controller-manager" "kube-scheduler")
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local daemon
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local daemon_status
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printf "%-24s %-10s \n" "PROCESS" "STATUS"
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for daemon in "${required_daemon[@]}"; do
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local rc=0
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kube-ssh "${MASTER}" "sudo systemctl is-active ${daemon}" >/dev/null 2>&1 || rc="$?"
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if [[ "${rc}" -ne "0" ]]; then
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daemon_status="inactive"
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else
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daemon_status="active"
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fi
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printf "%-24s %s\n" ${daemon} ${daemon_status}
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done
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printf "\n"
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}
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function troubleshoot-node() {
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# Troubleshooting on node if all required daemons are active.
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echo "[INFO] Troubleshooting on node ${1}"
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local -a required_daemon=("kube-proxy" "kubelet" "docker" "flannel")
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local daemon
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local daemon_status
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printf "%-24s %-10s \n" "PROCESS" "STATUS"
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for daemon in "${required_daemon[@]}"; do
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local rc=0
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kube-ssh "${1}" "sudo systemctl is-active ${daemon}" >/dev/null 2>&1 || rc="$?"
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if [[ "${rc}" -ne "0" ]]; then
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daemon_status="inactive"
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else
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daemon_status="active"
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fi
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printf "%-24s %s\n" ${daemon} ${daemon_status}
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done
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printf "\n"
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}
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# Clean up on master
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function tear-down-master() {
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echo "[INFO] tear-down-master on ${MASTER}"
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for service_name in etcd kube-apiserver kube-controller-manager kube-scheduler ; do
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service_file="/usr/lib/systemd/system/${service_name}.service"
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kube-ssh "$MASTER" " \
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if [[ -f $service_file ]]; then \
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sudo systemctl stop $service_name; \
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sudo systemctl disable $service_name; \
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sudo rm -f $service_file; \
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fi"
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done
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kube-ssh "${MASTER}" "sudo rm -rf /opt/kubernetes"
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kube-ssh "${MASTER}" "sudo rm -rf ${KUBE_TEMP}"
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kube-ssh "${MASTER}" "sudo rm -rf /var/lib/etcd"
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}
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# Clean up on node
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function tear-down-node() {
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echo "[INFO] tear-down-node on $1"
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for service_name in kube-proxy kubelet docker flannel ; do
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service_file="/usr/lib/systemd/system/${service_name}.service"
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kube-ssh "$1" " \
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if [[ -f $service_file ]]; then \
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sudo systemctl stop $service_name; \
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sudo systemctl disable $service_name; \
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sudo rm -f $service_file; \
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fi"
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done
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kube-ssh "$1" "sudo rm -rf /run/flannel"
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kube-ssh "$1" "sudo rm -rf /opt/kubernetes"
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kube-ssh "$1" "sudo rm -rf ${KUBE_TEMP}"
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}
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# Provision master
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#
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# Assumed vars:
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# MASTER
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# KUBE_TEMP
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# ETCD_SERVERS
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# SERVICE_CLUSTER_IP_RANGE
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function provision-master() {
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echo "[INFO] Provision master on ${MASTER}"
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local master_ip=${MASTER#*@}
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ensure-setup-dir ${MASTER}
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# scp -r ${SSH_OPTS} master config-default.sh copy-files.sh util.sh "${MASTER}:${KUBE_TEMP}"
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kube-scp ${MASTER} "${ROOT}/../saltbase/salt/generate-cert/make-ca-cert.sh ${ROOT}/binaries/master ${ROOT}/master ${ROOT}/config-default.sh ${ROOT}/util.sh" "${KUBE_TEMP}"
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kube-ssh "${MASTER}" " \
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sudo cp -r ${KUBE_TEMP}/master/bin /opt/kubernetes; \
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sudo chmod -R +x /opt/kubernetes/bin; \
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sudo bash ${KUBE_TEMP}/make-ca-cert.sh ${master_ip} IP:${master_ip},IP:${SERVICE_CLUSTER_IP_RANGE%.*}.1,DNS:kubernetes,DNS:kubernetes.default,DNS:kubernetes.default.svc,DNS:kubernetes.default.svc.cluster.local; \
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sudo bash ${KUBE_TEMP}/master/scripts/etcd.sh; \
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sudo bash ${KUBE_TEMP}/master/scripts/apiserver.sh ${master_ip} ${ETCD_SERVERS} ${SERVICE_CLUSTER_IP_RANGE} ${ADMISSION_CONTROL}; \
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sudo bash ${KUBE_TEMP}/master/scripts/controller-manager.sh ${master_ip}; \
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sudo bash ${KUBE_TEMP}/master/scripts/scheduler.sh ${master_ip}"
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}
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# Provision node
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#
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# Assumed vars:
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# $1 (node)
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# MASTER
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# KUBE_TEMP
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# ETCD_SERVERS
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# FLANNEL_NET
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# DOCKER_OPTS
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function provision-node() {
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echo "[INFO] Provision node on $1"
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local master_ip=${MASTER#*@}
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local node=$1
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local node_ip=${node#*@}
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ensure-setup-dir ${node}
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kube-scp ${node} "${ROOT}/binaries/node ${ROOT}/node ${ROOT}/config-default.sh ${ROOT}/util.sh" ${KUBE_TEMP}
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kube-ssh "${node}" " \
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sudo cp -r ${KUBE_TEMP}/node/bin /opt/kubernetes; \
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sudo chmod -R +x /opt/kubernetes/bin; \
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sudo bash ${KUBE_TEMP}/node/scripts/flannel.sh ${ETCD_SERVERS} ${FLANNEL_NET}; \
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sudo bash ${KUBE_TEMP}/node/scripts/docker.sh \"${DOCKER_OPTS}\"; \
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sudo bash ${KUBE_TEMP}/node/scripts/kubelet.sh ${master_ip} ${node_ip}; \
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sudo bash ${KUBE_TEMP}/node/scripts/proxy.sh ${master_ip}"
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}
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# Create dirs that'll be used during setup on target machine.
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#
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# Assumed vars:
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# KUBE_TEMP
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function ensure-setup-dir() {
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kube-ssh "${1}" "mkdir -p ${KUBE_TEMP}; \
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sudo mkdir -p /opt/kubernetes/bin; \
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sudo mkdir -p /opt/kubernetes/cfg"
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}
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# Run command over ssh
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function kube-ssh() {
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local host="$1"
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shift
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ssh ${SSH_OPTS} -t "${host}" "$@" >/dev/null 2>&1
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}
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# Copy file recursively over ssh
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function kube-scp() {
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local host="$1"
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local src=($2)
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local dst="$3"
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scp -r ${SSH_OPTS} ${src[*]} "${host}:${dst}"
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}
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# Ensure that we have a password created for validating to the master. Will
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# read from kubeconfig if available.
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#
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# Vars set:
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# KUBE_USER
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# KUBE_PASSWORD
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function get-password {
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load-or-gen-kube-basicauth
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if [[ -z "${KUBE_USER}" || -z "${KUBE_PASSWORD}" ]]; then
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KUBE_USER=admin
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KUBE_PASSWORD=$(python -c 'import string,random; \
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print("".join(random.SystemRandom().choice(string.ascii_letters + string.digits) for _ in range(16)))')
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fi
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}
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