Note that many instance types do not support instance store volumes.īoth EBS and instance store volumes can be in solid-state drive (SSD) or hard disk drive (HDD) format. EBS volumes, on the other hand, provide persistent storage. But, all data on instance store volumes is lost when the instance is stopped or if the disk fails (hence “ephemeral”). This means that their performance levels are more predictable than EBS volumes, which might be splitting hardware resources among multiple tenants. Instance store volumes are physically attached to the host computer the instance runs on. There are two primary kinds of block-level storage volumes attached to EC2 instances: EBS volumes and instance store (ephemeral) volumes. This article references metric terminology introduced in our Monitoring 101 series, which provides a framework for metric collection and alerting. We will explore some other methods for collecting memory metrics in the second part of this series. ![]() And finally, CloudWatch does not expose metrics related to instance memory. Third, AWS separates most resources by region, so you can generally only view CloudWatch metrics for instances within a single region at a time. Second, some metrics have nuances specific to EC2 instances, which we will cover below. You can enable detailed monitoring when available to increase that resolution to one minute, at additional cost. First, by default CloudWatch uses basic monitoring, which only publishes metrics at five-minute intervals. And, you can track scheduled events that might affect your instances’ status or availability.Īmazon’s CloudWatch monitoring system is the easiest way to see most resource metrics for your EC2 instances and other AWS services, with a few things to keep in mind. In addition to these resource metrics from EC2, you also have access to binary status checks, which report the health of your instances and the AWS systems they are hosted on. Available EC2 metrics generally fall into three types: ![]() You will also want to track how well your resource capacity matches demand. Regardless of the configuration of your individual instances, you will want to monitor basic system-level metrics to keep an eye on the health of your core infrastructure. You can also easily attach Amazon Elastic Block Store (EBS) volumes to new instances for persistent block-level storage, and many instance types can be optimized for EBS to provide additional performance. Instances running applications in Docker containers can be grouped into clusters and managed by Amazon’s EC2 Container Service (ECS) or ECS for Kubernetes (EKS). EC2 can be integrated into other AWS components and features, including Auto Scaling, which automatically launches or stops instances to meet the demand on your application. ![]() ![]() And EC2 offers a wide variety of standard and custom templates-stored as Amazon Machine Images (AMI)-that have various Linux-based or Windows operating systems and software configurations.ĮC2 instances allow users to increase or decrease resource capacity within minutes, and the ability to launch instances in specific parts of the world means you can match regional demand. Instances are available in a range of types, which provide different CPU, memory, storage, and networking capacity. Similar to other IaaS offerings, such as Microsoft Azure VMs and Google Compute Engine, EC2 enables users to provision compute resources in the form of virtual servers called instances. Amazon Elastic Compute Cloud (EC2) is a core component of the Amazon Web Services platform that provides scalable cloud-based computing capacity.
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