Stop EC2 for specified time + start with Lambda (python)
Lambda setting for stop
Select Lambda
Select blank function in blueprint selection
Next without setting the trigger
Set the function
Name：StopEC2 Description：stop EC2 Runtime: Python2.7
In the code of the Lambda function Described the code for stopping the instance.
python
import boto3
region = 'ap-northeast-1'
instances = ['X-XXXXXXXX']
def lambda_handler(event, context):
ec2 = boto3.client('ec2', region_name=region)
ec2.stop_instances(InstanceIds=instances)
print 'stopped instances: ' + str(instances)
Set region and instances. The above specifies the Tokyo region (ap-northeast-1).
The explanation of Boto3 is as follows AWS SDK For Python (Boto3) https://aws.amazon.com/jp/sdk-for-python/
Set Lambda function handlers and roles
Choose to create a new role, Set the role name and policy.
The role name is lambda_start_stop_ec2. The policy allows you to start and stop EC2.
- The lower half is added below
Policy document
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"logs:CreateLogGroup",
"logs:CreateLogStream",
"logs:PutLogEvents"
],
"Resource": "arn:aws:logs:*:*:*"
},
{
"Effect": "Allow",
"Action": [
"ec2:StartInstances",
"ec2:StopInstances"
],
"Resource": "*"
}
]
}
Press Next.
After confirmation, press Create Function.
This completes the stop.
Lambda settings for startup
It is for starting, but basically the same as for stopping, Just change "ec2.stop_instances" in the function to "ec2.start_instances" and the rest is the same. Select the role you created earlier.
CloudWatch Events settings for stopping
Select CloudWatch
Select Event → Create Rule.
Creating rules
Select the schedule and cron expression to set the execution time. The time zone is UTC and cron is described below. https://docs.aws.amazon.com/ja_jp/lambda/latest/dg/tutorial-scheduled-events-schedule-expressions.html
For the target, select StopEC2 of the Lambda function created earlier and perform "setting details".
Enter your name and description and you're done.
CloudWatch Events settings for startup
You can use the same description as stop except for the set time and changing the Lambda function to StartEC2.
CloudWatch Events Log
You can check it in the log of the CloudWatch menu below.
that's all.
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