Install SSM Agent on CentOS 7.x - Amazon Systems Manager
Quick installation commands for SSM Agent on CentOS 7Create custom agent installation commands for CentOS 7 in your Region
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Install SSM Agent on CentOS 7.x

The Amazon Machine Images (AMIs) for CentOS 7 that are provided by Amazon do not come with Amazon Systems Manager Agent (SSM Agent) preinstalled by default. Use the information on this page to help you install or reinstall the agent on CentOS 7 instances.

Quick installation commands for SSM Agent on CentOS 7

Use the following steps to manually install SSM Agent on a single instance. This procedure uses globally available installation files.

To install SSM Agent on CentOS 7.x

  1. Connect to your CentOS 7 instance using your preferred method, such as SSH.

  2. Copy the command for your instance’s architecture and run it on the instance.

    Note

    Even though URLs in the following commands include an ec2-downloads-windows directory, these are the correct global installation files for CentOS 7.

    x86_64 instances
    sudo yum install -y https://s3.amazonaws.com/ec2-downloads-windows/SSMAgent/latest/linux_amd64/amazon-ssm-agent.rpm
    ARM64 instances
    sudo yum install -y https://s3.amazonaws.com/ec2-downloads-windows/SSMAgent/latest/linux_arm64/amazon-ssm-agent.rpm

  3. (Recommended) Run the following command to verify that the agent is running.

    sudo systemctl status amazon-ssm-agent

    In most cases, the command reports that the agent is running, as shown in the following example.

    ● amazon-ssm-agent.service - amazon-ssm-agent
   Loaded: loaded (/etc/systemd/system/amazon-ssm-agent.service; enabled; vendor preset: disabled)
   Active: active (running) since Tue 2022-04-19 15:57:27 UTC; 6s ago
            --truncated--

    In rare cases, the command reports that the agent is installed but not running, as shown in the following example.

    ● amazon-ssm-agent.service - amazon-ssm-agent
   Loaded: loaded (/etc/systemd/system/amazon-ssm-agent.service; enabled; vendor preset: disabled)
   Active: inactive (dead) since Tue 2022-04-19 15:58:44 UTC; 2s ago
            --truncated--

    To activate the agent in these cases, run the following commands.

    sudo systemctl enable amazon-ssm-agent
    sudo systemctl start amazon-ssm-agent

Create custom agent installation commands for CentOS 7 in your Region

When you install SSM Agent on multiple instances using a script or template, we recommended using installation files that are stored in the Amazon Web Services Region you're working in.

For the following commands, we provide examples that use a publicly accessible S3 bucket in the US East (Ohio) Region (us-east-2).

Tip

You can also replace a global URL in the procedure Quick installation commands for SSM Agent on CentOS 7 earlier in this topic with a custom Regional URL you construct.

In the following command, replace region with your own information. For a list of supported region values, see the Region column in Systems Manager service endpoints in the Amazon Web Services General Reference.

x86_64
sudo yum install -y https://s3.region.amazonaws.com/amazon-ssm-region/latest/linux_amd64/amazon-ssm-agent.rpm

See the following example.

sudo yum install -y https://s3.us-east-2.amazonaws.com/amazon-ssm-us-east-2/latest/linux_amd64/amazon-ssm-agent.rpm
ARM64
sudo yum install -y https://s3.region.amazonaws.com/amazon-ssm-region/latest/linux_arm64/amazon-ssm-agent.rpm

See the following example.

sudo yum install -y https://s3.us-east-2.amazonaws.com/amazon-ssm-us-east-2/latest/linux_arm64/amazon-ssm-agent.rpm