Configuring AWS Auto Scaling for WordPress

In previous posts, I covered the basics of Amazon Web Services, Preparing AWS Services to support our sample WordPress workload, and Installing WordPress in AWS with ElastiCache and S3/Glacier backups.  In this post we’ll look at how to configure an AWS Auto Scaling group of WordPress servers that respond dynamically to the load placed on them by creating new EC2 instances on demand, or spinning down unnecessary instances during low demand to save on operational expenses.  Auto Scaling uses AWS Cloud Watch to monitor AWS components and responds to alarm metrics (CPU utilization, number of … [Read more...]