Although at easytocloud we prefer to build serverless solutions wherever we can, we do have some EC2 instances and use a bastion host to access our – predominantly private – EC2 instances. In an earlier posting you could read how we use our EC2 scheduler to stop and start our persistent instances based on the time of the day. The cost-savings of running an instance only during office-hours is a whopping 75% compared to leaving instances on ‘all the time’. As for our bastion host, not only does it reduce costs, it also increases security. The bastion host being the only way into our AWS infra as (most) other instances do not even have… Read More
Continue ReadingA serverless EC2 scheduler using Lambda and Cloudwatch Events
In an attempt to further reduce costs of our EC2 instances, we determined some instances that are running 24/7 unnecessarily. An automated process to schedule stop and start instances would greatly help cutting costs. Of course, the solution itself should not add an extra instance to our infrastructure. The solution has to be an example of serverless computing. Automagically stop running EC2 instances 24/7 unnecessarily We created a lambda function that scans all instances for a specific tag. The tag we use is named ‘Schedule’ and contains the desired ‘runtime’ for the specific instance. Instances without a Schedule tag will not be affected. We support the following content format in… Read More
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