Modifying a Configuration File

This action aims to modify the specified content in a file by identifying specific identifiers. The following figure shows the configuration page.

**Table 1** Parameters
Parameter	Description
Action Name	Name of an added deployment action. Enter 1 to 128 characters. Do not start or end with a space. Use letters, digits, spaces, and these special characters: -_,;:./().
Environment	Select a host cluster as the deployment object.
Absolute Path	Absolute path of the configuration file to modify. Modify a single file, for example, /usr/local/server.config. Modify multiple files, for example, /usr/local/server.config;/usr/local/a.txt. The wildcard character () can be used, for example, /usr/local/.config. However, you cannot separate multiple wildcards using semicolons (;), for example, /usr/local/.config;/usr/local/.txt**.
Prefix and Suffix	Parameter reference flag. If no prefix or suffix is matched, the configuration file remains unchanged and no error is reported in logs.
Action Control	You can configure whether to enable this setting. Keep running on failure: whether to continue the task even if this action fails. Execute this action with the sudo permission: whether to use the sudo permission to deploy this action.

To change the service port, perform the following steps:

Open the configuration file and view the content.

Figure 1 Viewing the configuration file
Change the prefix and suffix. For example, change the prefix to ${ and the suffix to }.
On the Parameters tab, set Name and Default Value.
Save the configuration and deploy the application.
After the deployment is complete, open the configuration file again.

The value of ${port} is changed to 8080.
Figure 2 Viewing the configuration file