• The AWS Systems Manager CloudWatch Dashboard will no longer be available after April 30, 2026. Customers can continue to use Amazon CloudWatch console to view, create, and manage their Amazon CloudWatch dashboards, just as they do today. For more information, see [Amazon CloudWatch Dashboard documentation](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch_Dashboards.html). 

# Determining the correct SSM Agent version to install on 64-bit Ubuntu Server 16.04 instances
<a name="agent-install-ubuntu-about-v16"></a>

**Important**  
Before you install SSM Agent on a 64-bit version of Ubuntu Server, ensure that you are using the correction installation tools. Beginning with Amazon Machine Images (AMIs) that are identified with 20180627, SSM Agent is pre-installed on version 16.04 using Snap packages. On instances created from earlier AMIs, SSM Agent must be installed using deb installer packages. For more information, see [Determining the correct SSM Agent version to install on 64-bit Ubuntu Server 16.04 instances](#agent-install-ubuntu-about-v16)  
Be aware that if an instance has more than one installation of the SSM Agent (for example, one installed using a Snap and one installed using a deb installer), your agent operations won't work correctly.

You can verify the source AMI ID creation date for an instance using either of the following methods. These procedures apply only to AWS managed AMIs.

**Verify a source AMI ID creation date (console)**

1. Open the Amazon EC2 console at [https://console.aws.amazon.com/ec2/](https://console.aws.amazon.com/ec2/).

1. In the left navigation pane, choose **Instances**.

1. Select an instance.

1. On the **Details** tab, check for a `YYYYMMDD` identifier in the value under **AMI name** field. For example: `ubuntu/images/hvm-ssd/ubuntu-xenial-16.04-amd64-server-20180627`.

**Verify a source AMI ID creation date (AWS CLI)**
+ Run the following command.

  ```
  aws ec2 describe-images --image-ids ami-id
  ```

  *ami-id* represents the ID of an AMI provided by AWS, such as `ami-07c8bc5c1ce9598c3`.

  If successful, the command returns information like the following, in which you can check the `CreationDate` and `Name` fields for information.

  ```
  {
      "Images": [
          {
              "Architecture": "x86_64",
              "CreationDate": "2020-07-24T20:40:27.000Z",
              "ImageId": "ami-07c8bc5c1ce9598c3",
  -- truncated --
              "ImageOwnerAlias": "amazon",
              "Name": "amzn2-ami-hvm-2.0.20200722.0-x86_64-gp2",
              "RootDeviceName": "/dev/xvda",
              "RootDeviceType": "ebs",
              "SriovNetSupport": "simple",
              "VirtualizationType": "hvm"
          }
      ]
  }
  ```