notify_slack

#!/bin/bash
#
#
# This script notifies slack
# when this machine starts up
# or shuts down
#
########################################

#This reads in the webhook URL from a file
#just replace it with you actual webhook URL
slack_url=`cat /etc/init.d/slack_url`

start_text="Name         :    `hostname`"
start_text+="\nIP                  :   `ip route get 8.8.8.8 | awk '{print $NF; exit}'`"
stop_text+=$start_text
start_text+="\nMemory   :   `cat /proc/meminfo | grep MemTotal | awk '{mem= $2/1048576; printf("%0.2g GiB",

mem) ; exit}'`"
drive_info="\n    Drives        :"
drive_info="`df -h | grep Filesystem`"
drive_info+="\n`df -h | grep /dev/sd | sed ':a;N;$!ba;s/\n/\\\n/g'`"


case "$1" in
 start)
   curl -H "Content-type:application/json" \
   -X POST -d \
   '{
      "channel":"#dev_ops",
      "username" : "ESXi",
      "icon_emoji" : ":esxi:",
      "attachments" : [
        {
          "fallback": "Server Starting up!",
          "color" : "good",
          "fields" : [
            {
               "title" : "Server Starting Up!",
               "value" : "'"$start_text"'",
               "short" : "true"
            },
            {
               "title" : "Drive Status",
               "value" : "'"$drive_info"'",
               "short" : "true"
            }
          ]
        }
      ]
    }
   ' $slack_url
   ;;
 stop)
   curl -H "Content-type:application/json" \
   -X POST -d \
   '{
      "channel":"#dev_ops",
      "username" : "ESXi",
      "icon_emoji" : ":esxi:",
      "attachments" : [
        {
          "fallback": "Server Shutting Down!",
          "color" : "good",
          "fields" : [
            {
               "title" : "Server Shutting Down!",
               "value" : "'"$stop_text"'",
               "short" : "true"
            }
          ]
        }
      ]
    }
   ' $slack_url
   ;;
 *)
   echo "INFO:Script used to send notifications to Slack Shutdown/Startup" >&2
   exit 3
   ;;
esac

exit 0