clean_cluster.sh

#!/bin/bash

vagrantDir=/home/ernelson/cluster/centos-origin-cluster
vagrantHosts=(master node1 node2)
searchTerm=$1

if [[ "$searchTerm" == "" ]]; then
  echo "ERROR: Must provide search term."
  exit 1
fi

pushd $vagrantDir

for host in "${vagrantHosts[@]}"; do
  echo "============================================================"
  echo "Cleaning [ $host ]"
  echo "============================================================"
  containerCmd="\"docker ps -a | grep $searchTerm\""
  fullCmd="vagrant ssh $host --command $containerCmd"

  readarray -t myArray < <(eval "$fullCmd" | awk '{print $1}')
  rmCmd="docker rm"
  originalCmd=$rmCmd
  for line in "${myArray[@]}"; do
    rmCmd="$rmCmd $line"
  done

  if ! [[ "$rmCmd" == "$originalCmd" ]]; then
    echo "Removing old containers on $host..."
    vagrant ssh $host -c "$rmCmd"
  else
    echo "No matching containers on $host, skipping..."
  fi

  readarray -t matchingImages < \
    <(vagrant ssh $host -c "docker images | grep $searchTerm" | awk '{print $3}')

  for imageId in "${matchingImages[@]}"; do
    echo "Image: $imageId"
  done

  rmCmd="docker rmi"
  originalCmd=$rmCmd
  for imgId in "${matchingImages[@]}"; do
    rmCmd="$rmCmd $imgId"
  done

  if ! [[ "$rmCmd" == "$originalCmd" ]]; then
    echo "Removing old images on $host..."
    vagrant ssh $host -c "$rmCmd"
  else
    echo "No matching images on $host, skipping..."
  fi
done

popd

run

clean_cluster.sh external # will clean any containers/images containing "external"