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AWS: How to get the Spot price of EC2 Instances using Python and Boto3
2 min read
Running on spot instances can save us a bunch of money on the cloud. It is based on long-term trends in supply and demand. You'll pay the Spot price that's in effect for the time period your instances are running. We can use boto3 to retrieve the current spot price:
26/05/2022
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git: How to remove a file from all the commits of a repository
4 min read
If we have included a file that shouldn't be in a git repository, we can remove it from all the commits that it is present using filter-branch
25/05/2022
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How to identify when a spot instance receives a termination notice
2 min read
When running spot instances, if AWS needs to reclaim that capacity (or if the current Spot price exceeds our bid price) we will receive a two minutes grace period to be able to save any data we need.
To check is we need to terminate our tasks on the spot instance we can use the instance's metadata
24/05/2022
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Indentify whether we are running an spot instance using AWS CLI
2 min read
On a running instance we might want to be able to identify whether it is a spot or on demand instance. We can use awscli to identify it
23/05/2022
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Pulling images from ECR on Kubernetes
2 min read
If you are getting the HTTP 403 (Forbidden) error or the error message no basic auth credentials when trying to pull an image from ECR you are most likely doing so without logging into it first.
18/05/2022
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