Recently I was asked to scour multiple AWS accounts to find any users or host role that had the S3FullAccess policy applied. So I came up with the following that will go through all users and roles to identify the ones with the S3FullAccess policy assigned. You can use this… Continue reading
I was recently asked to update a single tag in all of our 800 hosts only if there was already another tag present. So I need to look at all hosts, if I find a tag called ‘Type’ that contains the text ‘copy-from’ or ‘copy-from’ is in the value at… Continue reading
AWS allows you to assume roles in other AWS accounts. Its a nice feature that allows you to log into 1 account, assume a role in another account, and issue API commands as if you had signed into the 2nd account. You can have all users sign into 1 central… Continue reading
The South Florida Amateur Astronomers Association is currently working on a project to coordinate multiple Radio Telescope collection points. This would require very precise time stamps on recorded data, much more accurate than what public NTP server pools could deliver. So we successfully built as close to… Continue reading
This will walk you through setting up an Ipsec VPN between 2 networks using 2 hosts using strongswan to build the tunnel. This was my go to solution to connect Amazon AWS VPCs across regions… that is until AWS allowed peering VPCs across regions in December of 2018. So connecting… Continue reading
I was recently asked to create a report showing the total files within the top level folders and all the subdirs under the folder in our S3 Buckets. S3 bucket ‘files’ are objects that will return a key that contains the path where the object is stored within the bucket…. Continue reading
Here are 2 sample functions to illustrate how you can get information about Tags on instances using Boto3 in AWS. import boto3 def get_instance_name(fid): # When given an instance ID as str e.g. ‘i-1234567’, return the instance ‘Name’ from the name tag. ec2 = boto3.resource(‘ec2’) ec2instance = ec2.Instance(fid) instancename =… Continue reading
I’m writing this on 9/14/2016. I make note of the date because the request to get the size of an S3 Bucket may seem a very important bit of information but AWS does not have an easy method with which to collect that info. I fully expect them to add… Continue reading
I’m here adding some additional Python Boto3 examples, this time working with S3 Buckets. So to get started, lets create the S3 resource, client, and get a listing of our buckets. import boto3 s3 = boto3.resource(‘s3’) s3client = boto3.client(‘s3’) response = s3client.list_buckets() for bucket in response[“Buckets”]: print(bucket[‘Name’]) Here we create… Continue reading
Continuing on with simple examples to help beginners learn the basics of Python and Boto3. This is a very simple tutorial showing how to get a list of instances in your Amazon AWS environment. import boto3 ec2client = boto3.client(‘ec2’) response = ec2client.describe_instances() for reservation in response[“Reservations”]: for instance in reservation[“Instances”]:… Continue reading
Mike's Guides to Learning Boto3 Volume 1: Amazon AWS Connectivity and Basic VPC Networking
Mike's Guides to Learning Boto3 Volume 2: AWS S3 Storage: Buckets, Files, Management, and Security
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