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#!/usr/bin/env bash
#
# Copyright 2017-present Open Networking Foundation
#
# 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.
#
# Installs Kubespray on remote target machines.
#
set -e -u -o pipefail
KS_COMMIT="${KS_COMMIT:-73a2a180061113ac124683e5cc492ba07df33d4c}"
install_kubespray () {
# Cleanup Old Kubespray Installations
echo "Cleaning Up Old Kubespray Installation"
rm -rf kubespray
# Download Kubespray
echo "Downloading Kubespray"
git clone https://github.com/kubernetes-incubator/kubespray.git
pushd kubespray
git checkout "$KS_COMMIT"
popd
# Generate inventory and var files
echo "Generating The Inventory File"
rm -rf "inventories/${DEPLOYMENT_NAME}"
mkdir -p "inventories/${DEPLOYMENT_NAME}"
cp -r kubespray/inventory/sample/group_vars "inventories/${DEPLOYMENT_NAME}/group_vars"
CONFIG_FILE="inventories/${DEPLOYMENT_NAME}/inventory.cfg" python3 kubespray/contrib/inventory_builder/inventory.py "${NODES[@]}"
# Add configuration to inventory
ansible-playbook k8s-configs.yaml --extra-vars "deployment_name=${DEPLOYMENT_NAME} k8s_nodes='${NODES[*]}' kubespray_remote_ssh_user='${REMOTE_SSH_USER}'"
# Prepare Target Machines
echo "Installing Prerequisites On Remote Machines"
ansible-playbook -i "inventories/${DEPLOYMENT_NAME}/inventory.cfg" k8s-requirements.yaml
# Install Kubespray
echo "Installing Kubespray"
ansible-playbook -i "inventories/${DEPLOYMENT_NAME}/inventory.cfg" kubespray/cluster.yml -b -v
}
#
# Exports the Kubespray Config Location
#
source_kubeconfig () {
kubeconfig_path="${PWD}/inventories/${DEPLOYMENT_NAME}/artifacts/admin.conf"
if [ -f "$kubeconfig_path" ]
then
# these options are annoying outside of scripts
set +e +u +o pipefail
echo "setting KUBECONFIG=$kubeconfig_path"
export KUBECONFIG="$kubeconfig_path"
else
echo "kubernetes admin.conf not found at: '$kubeconfig_path'"
exit 1
fi
}
#
# Checks if an arbitrary pod name is given during specifc
# operations.
#
check_pod_name () {
if [ -z "$DEPLOYMENT_NAME" ]
then
echo "Missing option: podname" >&2
echo " "
display_help
exit -1
fi
}
#
# Displays the help menu.
#
display_help () {
echo "Usage: $0 {--install|--source|--help} [podname] [ip...] " >&2
echo " "
echo " -h, --help Display this help message."
echo " -i, --install Install Kubespray on <podname>"
echo " -s, --source Source the Kubectl config for <podname>"
echo " "
echo " podname An arbitrary name representing the pod"
echo " ip The IP address of the remote node(s)"
echo " "
echo "Example usages:"
echo " ./setup.sh -i podname 192.168.10.100 192.168.10.101 192.168.10.102"
echo " ./setup.sh -i podname (default is 10.90.0.101 10.90.0.102 10.90.0.103)"
echo " source setup.sh -s podname"
}
#
# Init
#
if [ $# -lt 2 ]
then
display_help
exit 0
fi
CLI_OPT=$1
DEPLOYMENT_NAME=$2
shift 2
DEFAULT_NODES=(10.90.0.101 10.90.0.102 10.90.0.103)
NODES=("${@:-${DEFAULT_NODES[@]}}")
REMOTE_SSH_USER="${REMOTE_SSH_USER:-cord}"
while :
do
case $CLI_OPT in
-i | --install)
check_pod_name
install_kubespray
exit 0
;;
-h | --help)
display_help
exit 0
;;
-s | --source)
check_pod_name
source_kubeconfig
break
;;
--) # End of all options
shift
break
;;
*)
echo Error: Unknown option: "$CLI_OPT" >&2
echo " "
display_help
exit -1
;;
esac
done