AWS goodies
Published on 2015-06-03 15:45
Categories: aws
TL;DR;
A collection of snippets and scripts to be used against the Amazon Web Services to ease management of servers.
Disclaimer
All snippets and scripts are provided as is and I provide no guarantee that they won’t destroy your environment. They work on my machine™.
All snippets and scripts assume you have a working installation of the aws-cli and have setup your credentials properly.
Most scripts also use the fantastic jq tool.
How to generate a new key-pair and save it into ~/.ssh
The export line is optional, if you don’t use it, simply replace $name
with the name you want.
The chmod line is also optional, but strongly recommended, since SSH will
complain if the key is readable to the world.
export name=the-name-you-want
aws ec2 create-key-pair --key-name $name | \
jq ".KeyMaterial" --raw-output > ~/.ssh/$name.pem
chmod 0400 ~/.ssh/$name.pem
How to get the stack status from CloudFormation
This snippet is useful in scripts to determine when a stack has reached a certain status. Can be used to wait for a UPDATE_COMPLETED before running other commands, like Ansible playbooks.
The export line is optional, if you don’t use it, simply replace $name
with the name you want.
export name=your-stack-name
aws cloudformation describe-stacks --stack-name $name | \
jq ".Stacks[0].StackStatus" --raw-output
How to sync a local folder with a remote S3 folder
aws s3 sync my-folder s3://my-bucket/my-folder