July 17, 2020 / Eternal Team
Do you want to know, how to start and stop instance with a bash script?
Note This script and method will work only if your both EC2 Instances are within the same VPC, same Region and same AWS account.
Step 1
Connect to EC2 Instance via SSH or putty
Step 2
Create Two Script files , start and stop script at any location. Let say I am creating them in /root directory.
Use Vi or Nano editor to create or edit the files.
$ nano /root/ec2instance_start.sh
Add the following lines in the start script and save and exit using Ctrl+O and Ctrl+ x command.
#! /bin/bash aws ec2 start-instances –instance-ids i-f0c3678r3dba65876 $ nano /root/ec2instance_stop.sh
Add the following lines in the stop script and save and exit using Ctrl+O and Ctrl+ x command.
#! /bin/bash aws ec2 stop-instances –instance-ids i-f0c3678r3dba65876
Step 3 Make the scripts executable
To make both the scripts executable run following commands.
$ chmod +x /root/ec2instance_start.sh $ chmod +x /root/ec2instance_stop.sh
Step 4 Schedule the Stop and Start using Cronjob.
Run the following command to edit your Cron job.
$ crontab -e
Add the following line to start and stop the instance at 11 AM and 7 PM respectively.
00 11 * * * sh /root/ec2instance_start.sh > /tmp/ec2instance_start.log 00 19 * * * sh /root/ec2instance_stop.sh > /tmp/ec2instance_stop.log
Once everything shown as above is done, the EC2 instance will start and stop at the above mentioned time.
