clean-kube-nodes

#!/bin/bash
# Copyright 2017 Charter DNA Team (CTEC).
#
# 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.
#
### Declare colors to use during the running of this script:
declare -r GREEN="\033[0;32m"
declare -r RED="\033[0;31m"
declare -r YELLOW="\033[0;33m"

function echo_green {
  echo -e "${GREEN}$1"; tput sgr0
}
function echo_red {
  echo -e "${RED}$1"; tput sgr0
}
function echo_yellow {
  echo -e "${YELLOW}$1"; tput sgr0
}

source /opt/demo/.bootkube_env

## REMOVING NODE INSTALLATIONS:
for node in $(cat /opt/demo/deploy-node/nodes); do
  echo_yellow "\nDisabling kubelet.service on and stopping/removing containers for ${node}...";
    ssh -tq ${node} "cd ${BOOTKUBE_DIR} && \
    ./clean-kube-wipe";
  echo_yellow "\nTelling the Kubernetes Master at ${KUBE_MASTER} to remove ${node}...";
# DRAIN NODES: NOT TYPICALLY USED, MAY HANG NODE
# kubectl drain ${node} --force --ignore-daemonsets;
  kubectl delete node ${node};
  ssh -tq ${node} "sudo rm -rf ${BOOTKUBE_DIR}";
  echo_green "\n${node} has been removed from the cluster!";
done