Each EBS volume can be modified once every 6 hours. I did not know it until 5 minutes ago. I resized a EBS volume from 100G to 150G, then I thought it might be better give it more space. To my surprise, I got this error when I tried to resize it again to 200G.
Category: Cloud
Hack ‘Environment Type’ in Elastic Beanstalk
In the Elastic Beanstalk console, you get two options for your environment type: Load balancing + auto scaling or Single instance. If it make you think Single instance is just a single instance, then you are cheated. It is actually a auto scaling group as well, but with Min:1 Max:1 setting. And Elastic Beanstalk creates … Continue reading Hack ‘Environment Type’ in Elastic Beanstalk
Code smartly to avoid exceed AWS request rate
Have your http calls ever been throttled by AWS? If not, congratulations! And if you are curious about what it looks like, here you go: Below is what AWS says about the EC2 request rate limits. The same principal applies to other AWS services, e.g Autoscaling group, in which I encountered the rate exceeded problem. … Continue reading Code smartly to avoid exceed AWS request rate
Run autoscaling group on spot instance in a smart way
Spot fleet is good, but it may not fit every use case. E.g you can not easily shutdown the non-prod environment with spot fleet, due to its scalable target only allows 1 - 3000. In some scenarios, running autoscaling group on spot instance is a better way to go. And essentially, it is all about the … Continue reading Run autoscaling group on spot instance in a smart way
Run Elasticsearch Cluster on Spot Instances
Running Elasticsearch cluster is not cheap, as it generally requires a couple of high spec servers to provides both performances and reliabilities. Below is a typical 3 nodes Elasticsearch cluster that is running on AWS: 3 nodes, one in each availability zone. each node is both master and data node, and it is formed by ec2 … Continue reading Run Elasticsearch Cluster on Spot Instances
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