Slack startup/shutdown notify script

slack_notify

#!/bin/bash
#
# Change the slack URL to your own
#
##############################################

start_value=".\n    Name         :    `hostname`"
start_value+="\n    IP                  :   `ip route get 8.8.8.8 | awk '{print $NF; exit}'`"
start_value+="\n    Memory   :   `cat /proc/meminfo | grep MemTotal | awk '{mem= $2/1048576; printf("%0.2g GiB", mem) ; exit}'`"
start_value+="\n    Drives        :   `df -h | grep Filesystem`"
start_value+="\n                                `df -h | grep /dev/sda`"


stop_value=".\n    Name         :    `hostname`"
stop_value+="\n    IP                  :   `ip route get 8.8.8.8 | awk '{print $NF; exit}'`"


case "$1" in
 start)
  curl -H "Content-type: application/json" -X POST -d \
'{
    "username": "OpenStack",
    "icon_emoji": ":openstack:",
    "channel": "#dev_ops",
    "attachments": [
        {
            "fallback": "Server is Starting Up",
            "color": "good",
            "fields": [
                {
                    "title": "Server Startup",
                    "value": "'"$start_value"'",
                    "short": false
                }
            ]
        }
    ]
}' https://hooks.slack.com/services/CHANGE_ME_XXXXXXX
   ;;
 stop)
  curl -H "Content-type: application/json" -X POST -d \
'{
    "username": "OpenStack",
    "icon_emoji": ":openstack:",
    "channel": "#dev_ops",
    "attachments": [
        {
            "fallback": "Server is Shutting Down",
            "color": "good",
            "fields": [
                {
                    "title": "Server Shutdown",
                    "value": "'"$stop_value"'",
                    "short": false
                }
            ]
        }
    ]
}' https://hooks.slack.com/services/CHANGE_ME_XXXXXXX
   ;;
 *)
   echo "INFO: Script used to send notifications to Slack Shutdown/Startup" >&2
   exit 3
   ;;
esac

exit 0