DB Instances on AWS Outposts
AWS launched support for MySQL and PostgreSQL, with plans to add other database engines in the future
Creating a DB Instance
I’ll use the Console, taking care to select the AWS Region that serves as “home base” for my Outpost. I open the Console and click Create database to get started:
I select On-premises for the Database location, and RDS on Outposts for the On-premises database option:
Next, I choose the Virtual Private Cloud (VPC). The VPC must already exist, and it must have a subnet for my Outpost. I also choose the Security Group and the Subnet:
I give my DB Instance a name (
jb-database-2), and enter the credentials for the master user:.
Then I choose the size of the instance. I can select between Standard classes (db.m5):
and Memory Optimized classes (db.r5):
Next, I configure the desired amount of SSD storage:
One thing to keep in mind is that each Outpost has a large, but finite amount of compute power and storage. If there’s not enough of either one free when I attempt to create the database, the request will fail.
Within the Additional configuration section I can set up several database options, customize my backups, and set up the maintenance window. Once everything is ready to go, I click Create database:
As usual when I use RDS, the state of my instance starts out as Creating and transitions to Available when my DB Instance is ready:
After the DB instance is ready, I simply configure my code (running in my VPC or in my Outpost) to use the new endpoint:
Things to Know
Operations & Functions – Much of what you already know about RDS works as expected and is applicable. You can rename, reboot, stop, start, tag DB instances, and you can make use of point-in-time recovery; you can scale the instance up and down, and automatic minor version upgrades work as expected. You cannot make use of read replicas or create highly available clusters.
Backup & Recover – Automated backups work as expected, and are stored in the AWS region. You can use them to create a fresh DB Instance in the cloud or in any of your Outposts. Manual snapshots also work, and are stored in the AWS region. They can be used to create a fresh DB Instance on the same Outpost.
Encryption – The storage associated with your DB instance is encrypted, as are your DB snapshots, both with KMS keys.
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