Ec2 which ami

Tags can be used to categorize and manage AMIs. When an AMI is no longer needed, it can be deregistered. A deregistered AMI cannot be used to launch new instances, but existing instances will remain active. AWS Account. AWS Cloud Watch. AWS GuardDuty. Direct Connect. Image Location string Path to an S3 object containing an image manifest, e. Kernel Id string The id of the kernel image AKI that will be used as the paravirtual kernel in created instances. Name string A region-unique name for the AMI.

Ramdisk Id string The id of an initrd image ARI that will be used when booting the created instances. No other value is supported at this time. Virtualization Type string Keyword to choose what virtualization mode created instances will use. The choice of virtualization type changes the set of further arguments that are required, as described below. Ephemeral Block Devices []Ami Ephemeral Block Device Args Nested block describing an ephemeral block device that should be attached to created instances.

Tags map[string]string A map of tags to assign to the resource. Hypervisor string The hypervisor type of the image. Id string The provider-assigned unique ID for this managed resource. Image Type string The type of image. The D2 instances are backed by hard disk drives and offer large-volume, low-cost persistent storage with up to 48TB per instance. In addition to selecting the right EC2 instance family and type, other resourcing considerations include:. A few patterns emerge when describing the different kinds of instances you can use in AWS.

First, there are a large number of instances. Even within a single family of instances, there can be up to 18 different configurations. This makes it difficult to find the optimal instance type for a given workload. For example, you may have a compute-intensive application, but you may not be sure if you should use a compute-optimized instance or an accelerated instance.

If the application makes many floating point calculations and the code can take advantage of a GPU, an accelerated instance may be the best option. These characteristics are key to doing accurate comparisons between different instance types, which can help you decide which kind of instance is best for a particular workload. Also consider technical constraints on different instances, such as which images run on particular instances; if EBS and networking can burst; and the limits of local storage.

Finally, consider business policies that might be in effect that limit your options. The wide array of choices in choosing an instance type can be bewildering.

Mistakes can be costly, as well as degrade performance. For small numbers of instances this can be done manually, but as environments grow, this can be very challenging. Properly resourcing your application workload requires precise selection of EC2 instance family and sizing—choices that demand you balance performance, stability, and cost.

Skilled cloud infrastructure managers make these choices every day, and although it is possible to run infrastructure at scale without EC2 management, the cumulative impact of best-guess instance selection always leaves performance, stability, and cost savings gains on the table—sometimes to the tune of hundreds of thousands of dollars annually.

Additionally, due to continuous service and instance releases across all the cloud providers, it is very difficult to keep up with the latest technology—there can be millions of possible instance configuration possibilities for each of your workloads.