Amazon tends to be dipping in their toes into everything. Remember Whole Foods. If that wasn’t enough, Amazon started competing with drugstores six months ago when it acquired Pillpack. Shares of Walgreens and CVS went down 9 percent as a result. Now, Amazon is saying that they want to compete with network companies like Cisco, Juniper and Arista. Potentially, Amazon can sell networking data switches at deep discounts ranging anywhere from 50% up to 80% discount. That’s bad news for some networking companies.
RDS is a managed service by AWS. Patching is performed infrequently. Sometimes, it takes a few months. AWS performs these updates during the maintenance period. If no maintenance period was specified during DB creation, it will be assigned a default period. When patching is performed, AWS may need to stop and reboot your RDS instance right after patches are applied. To avoid potential downtime, make sure your RDS instances are configured in a Multi-AZ environment. Patching will be applied on each RDS instance separately, therefore avoiding downtime for your application.
Every once in a while, you may need to do some cleanup and perform maintenance in AWS. One area where you can do some cleanup is the security groups. To check if security groups are in-used, is by way of the AWS Console. You can filter the security group via Instances. But that is not going to be enough. Security groups are also used in RDS as well as in load balancers. Overall, you have to be extra careful not to delete a security group that’s in-use. Fortunately, AWS will prompt you if you try to delete a security group that is still in-use. It’s a safety feature that can potentially save you from headaches.