Elastic Baremetal Instance and Elastic High-performance Computing Cluster Instance Halt Capability Configuration Instructions

Background

• The ability to stop Elastic Baremetal Compute (EBC) instances and Elastic Hyper-computing Cluster (EHC) instances depends on whether the instances support the halt function. If halt is not supported, startup failures may occur during boot.
• The latest public images provided by EBC and EHC include integrated halt functionality. Instances created with the latest public images can utilize the stop function directly.
• For instances that do not support halt, you can manually add halt configuration to the system or use the cloud assistant to execute a command for adding the halt configuration.
• If you are using a custom image, you should recreate the custom image after adding the halt configuration to the instance. This ensures that newly created instances have proper stoppage functionality.

Operation steps

1. To check if EBC or EHC instances support halt, access the instance and verify if HandlePowerKey=halt is present in /etc/systemd/logind.conf. If halt is supported, you can use the stoppage feature directly.

2. If halt is not supported, you can directly add halt configuration in the system:

• Access the instance and execute the following commands:

echo "HandlePowerKey=halt" >> /etc/systemd/logind.conf

systemctl daemon-reload

systemctl restart systemd-logind

• The executed command takes effect immediately, enabling the halt functionality without requiring an instance reboot.

3. Execute the command: adding halt configuration via cloud assistant:

• Execute the common command: adding halt via the quick-execution command feature of the assistant: you can select operation of instances in batch.
• Execute the common command. After all instances are executed successfully, exit the interface.
• After successful execution, no restart or additional steps are required for instance, "HandlePowerKey=halt" will be automatically added to "/etc/systemd/logind.conf".

4. If you're using a custom image, recreate it by including an instance after completing the halt operation. Instances created or reinstalled using updated custom images will have normal stoppage functionality.