Writing Files Using Post-start Processing

Prerequisites

• You have created an environment.
• You have created an application.
• You have created and deployed a component. In this example, use the nginx component.

Procedure

1. Log in to CAE. Choose Component Configurations.
2. Select the target component from the drop-down list in the upper part of the page.
   Figure 1 Selecting a component
   

3. Configure post-start processing by referring to Figure 2. For details, see Configuring the Lifecycle.
   Run the following commands:

   /bin/bash
   -c
   echo 'Hello, postStart' > /lifecycle.txt

   Figure 2 Configuring the lifecycle
   

4. Click Save.
5. Click Activate Settings in the upper part of the page. In the dialog box displayed on the right, confirm the configurations and click OK for the configurations to take effect.
6. Use CloudShell to log in to the container and check whether the file content takes effect.
   1. Choose Instance List.
   2. Select the target environment and application from the drop-down lists in the upper part of the page, and click the target component.
   3. Select a running instance and click Remote Login in the Operation column. Go to the container and check whether the file content takes effect.
   4. View the file content and check whether the file is successfully written.

      tail -f lifecycle.txt

      Figure 3 Logging in to the container and viewing the file content