Guided Lab: Creating Placement Groups – 3 types

Tutorials-Dojo

Description

Placement groups in Amazon Elastic Compute Cloud (EC2) give you control over the placement of instances within a cluster to meet specific needs, like low latency or high throughput.

Depending on the workload type, you can create a placement group using one of these placement strategies:

  • Cluster – Packs instances closely together within an Availability Zone to achieve low-latency network performance for high-performance computing (HPC) applications that require tightly coupled node-to-node communication.
  • Partition – Instances are distributed across logical partitions to ensure that groups of instances in one partition do not share hardware with groups of instances in different partitions. This approach is commonly used by large distributed and replicated workloads like Hadoop, Cassandra, and Kafka.
  • Spread – Strictly places a small group of instances across distinct underlying hardware to reduce correlated failures.

Objectives

In this lab, you will:

  • Understand the concept of Placement Groups
  • Differentiate the Types of Placement Groups
  • Create the Cluster, Partition, and Spread partition groups in the EC2 console

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Lab Steps

Creating a Placement Group

1. Navigate to the search bar, type “EC2”, and click to open the EC2 Dashboard.

2. In the navigation pane under Network & Security, choose Placement Groups.

3. Click the Create placement group button.

4. For this lab, we will create three (3) Placement Strategies for the group.

  • Creating a Cluster Placement groups:
    • Enter and provide the name of the cluster placement groups.
    • Select Cluster as the Placement Strategy.
    • Click the Create Group to proceed with the creation.

You will be redirected to the Placement Group page to view the list of Placement Groups that you have created.

Creating a Spread Placement groups:

  • Enter and provide the name of the spread placement groups.
  • In selecting Spread as the Placement Strategy, you need to choose the spread level. In this lab, we will use Rack as our spread level.
    • Rack – no restrictions
    • Host – only for Outposts
  • Click the Create Group to proceed with the creation.

You will be redirected to the Placement Group page to view the list of Placement Groups that you have created.

Creating a Partition Placement group:

  • Same as the steps above, input the name of the group.
  • Choose Partition as the placement strategy, then select the number (e.g. 4 partitions) of partitions within the group.
  • Click the Create Group to proceed with the creation. 

You will be redirected to the Placement Group page where you can view a list of the Placement Groups you have created.

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