Amazon Lambda script: start all appropriately tagged instances
## Amazon Lambda script: start all appropriately tagged instances | |
## | |
## Runs in Amazon Lambda as Python 2.7 or as Python 3.6. | |
## Intended to be invoked on a schedule by Amazon Cloud Watch. | |
## Tag relevant instances with label 'autostart', value 'true'. | |
## TODO It could be good to add logging to this script | |
import boto3 | |
region = 'eu-west-1' ## Ireland | |
def lambda_handler(event, context): | |
## Don't call anything just 'ec2', that's confusing | |
ec2_resource = boto3.resource('ec2', region_name=region) | |
ec2_client = boto3.client('ec2', region_name=region) | |
filters = [{ | |
'Name': 'tag:autostart', | |
'Values': ['true'] | |
} | |
] | |
to_start = ec2_resource.instances.filter(Filters=filters) | |
to_start_ids = [instance.id for instance in to_start] | |
ec2_client.start_instances(InstanceIds=to_start_ids) | |
# May want broad rights from the 'execution role'. I used this JSON, based on | |
# https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_use_switch-role-ec2.html | |
# { | |
# "Version": "2012-10-17", | |
# "Statement": [ | |
# { | |
# "Effect": "Allow", | |
# "Action": [ | |
# "ec2:*" | |
# ], | |
# "Resource": "*" | |
# } | |
# | |
# ] | |
# } | |
## (MIT Licence) | |
## | |
## Copyright 2018 Max Barraclough | |
## | |
## Permission is hereby granted, free of charge, to any person obtaining a copy | |
## of this software and associated documentation files (the "Software"), to deal | |
## in the Software without restriction, including without limitation the rights | |
## to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
## copies of the Software, and to permit persons to whom the Software is | |
## furnished to do so, subject to the following conditions: | |
## | |
## The above copyright notice and this permission notice shall be included in | |
## all copies or substantial portions of the Software. | |
## | |
## THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
## IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
## FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
## AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
## LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
## OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
## THE SOFTWARE. |
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