檢查硬碟空間, 並清除prometheus docker volume

docker-clean.sh

#!/bin/bash

usage()
{
   echo ""
   echo "Usage: $0 [ -d ][ -p ] "
   echo -e "\t-d desired docker disk path"
   echo -e "\t-p desired project path"
}

while getopts "hp:d:?" opt
do
  echo $opt;
  case $opt in
    h)
      usage
      exit 1
      ;;
    d)
      echo "-d was triggered with $OPTARG"
      DISK_PATH=$OPTARG;
      ;;
    p)
      echo "-p was triggered with $OPTARG"
      PROJECT_PATH=$OPTARG;
      ;;
    ?)
      echo "Invalid option: -$OPTARG"
      exit 1
      ;;
  esac
done

# default flag value
if [[ -z $DISK_PATH ]]; then
    DISK_PATH="/dev/mapper/centos-root";
fi

if [[ -z $PROJECT_PATH ]]; then
    PROJECT_PATH="/opt/prometheus";
fi

REMAIN_DISK=`df -h | grep $DISK_PATH | awk '{print  100 - $5 }'`;

echo "Remained Disk Space: ${REMAIN_DISK}%";

if [[ $REMAIN_DISK < 70 ]]; then
    echo "Start Cleaning...";
    cd $PROJECT_PATH && docker-compose down && docker volume ls -q | grep -v prometheus_grafana-storage | xargs -n1 -I{} docker volume rm {} && docker-compose up -d;
else
    echo "Nothing to do...";
fi