Basic Agent Usage for CentOS, Rocky, and Alma Linux

Overview

This page outlines the basic features of the Datadog Agent for CentOS and its derivatives, Rocky Linux and Alma Linux. To install the Datadog Agent, follow the Agent Installation Instructions for CentOs.

Packages are available for 64-bit x86 and Arm v8 architectures. For other architectures, use the source install.

Note: CentOS 6 and above are supported on the 64-bit x86 architecture. CentOS/Rocky/Alma 8 and above are supported on the 64-bit Arm v8 architecture.

Commands

In Agent v6 and v7, the service manager provided by the operating system is responsible for the Agent lifecycle, while other commands must be run through the Agent binary directly. In Agent v5, almost everything is done through the service manager.

CentOS 7 and higher

DescriptionCommand
Start Agent as a servicesudo systemctl start datadog-agent
Stop Agent running as a servicesudo systemctl stop datadog-agent
Restart Agent running as a servicesudo systemctl restart datadog-agent
Status of Agent servicesudo systemctl status datadog-agent
Status page of running Agentsudo datadog-agent status
Send flaresudo datadog-agent flare
Display command usagesudo datadog-agent --help
Run a checksudo -u dd-agent -- datadog-agent check <CHECK_NAME>

CentOS 6

DescriptionCommand
Start Agent as a servicesudo start datadog-agent
Stop Agent running as a servicesudo stop datadog-agent
Restart Agent running as a servicesudo restart datadog-agent
Status of Agent servicesudo status datadog-agent
Status page of running Agentsudo datadog-agent status
Send flaresudo datadog-agent flare
Display command usagesudo datadog-agent --help
Run a checksudo -u dd-agent -- datadog-agent check <CHECK_NAME>
DescriptionCommand
Start Agent as a servicesudo service datadog-agent start
Stop Agent running as a servicesudo service datadog-agent stop
Restart Agent running as a servicesudo service datadog-agent restart
Status of Agent servicesudo service datadog-agent status
Status page of running Agentsudo service datadog-agent info
Send flaresudo service datadog-agent flare
Display command usagesudo service datadog-agent
Run a checksudo -u dd-agent -- dd-agent check <CHECK_NAME>

Note: If the service wrapper is not available on your system, use:

  • On upstart-based systems: sudo start/stop/restart/status datadog-agent
  • On systemd-based systems: sudo systemctl start/stop/restart/status datadog-agent

[Learn more about Service lifecycle commands][2]

Configuration

The configuration files and folders for the Agent are located in:

  • /etc/datadog-agent/datadog.yaml

Configuration files for Integrations:

  • /etc/datadog-agent/conf.d/

The configuration files and folders for the Agent are located in:

  • /etc/dd-agent/datadog.conf

Configuration files for Integrations:

  • /etc/dd-agent/conf.d/

Uninstall the Agent

sudo yum remove datadog-agent

This command removes the Agent, but does not remove:

  • The datadog.yaml configuration file
  • User-created files in the /etc/datadog-agent configuration folder
  • User-created files in the /opt/datadog-agent folder
  • The dd-agent user
  • Datadog log files

If you also want to remove these elements, run this command after removing the Agent:

sudo userdel dd-agent \
&& sudo rm -rf /opt/datadog-agent/ \
&& sudo rm -rf /etc/datadog-agent/ \
&& sudo rm -rf /var/log/datadog/
sudo yum remove datadog-agent

This command removes the Agent, but does not remove:

  • The datadog.yaml configuration file
  • User-created files in the /etc/dd-agent configuration folder
  • User-created files in the /opt/datadog-agent folder
  • The dd-agent user
  • Datadog log files

If you also want to remove these elements, run this command after removing the Agent:

sudo userdel dd-agent \
&& sudo rm -rf /opt/datadog-agent/ \
&& sudo rm -rf /etc/dd-agent/ \
&& sudo rm -rf /var/log/datadog/

Uninstall Single Step APM Instrumentation

If you installed the Agent with Single Step APM Instrumentation, and you want to uninstall the Agent, you need to run additional commands to uninstall APM Instrumentation.

Troubleshooting

See the Agent Troubleshooting documentation.

Working with the embedded Agent

The Agent contains an embedded Python environment at /opt/datadog-agent/embedded/. Common binaries such as python and pip are contained within /opt/datadog-agent/embedded/bin/.

See the instructions on how to add packages to the embedded Agent for more information.

Further Reading