Rolling Release

Prerequisites

Procedure

1. Log in to ServiceStage.
2. Use either of the following methods to go to the Deployment Records page.
   • On the Application Management page, click the application to which the component belongs, and click the target component in Component List. In the left navigation pane, choose Deployment Records.
   • On the Component Management page, click the target component. In the left navigation pane, choose Deployment Records.

3. In the Deployment Records list, select the deployment record of the historical version to be used as the configuration template.
4. Click Redeploy in the upper right corner of the page. The Redeploy dialog box is displayed.
5. Select Rolling Release for Deployment Type and click OK.
6. Configure the component version by referring to the following table. Parameters marked with an asterisk (*) are mandatory.

   Parameter	Description
   Stack	The value is fixed to the configuration of the selected historical version and cannot be changed.
   *Software Package/Image	If you select Source code repository, create authorization by referring to Authorizing a Repository and set the code source. If you select a software package or image package, the option is fixed to the software package type (JAR, WAR, or ZIP) or image package type selected during component creation and deployment. It is determined by the selected technology stack type. For details, see Table 1.
   *Upload Method	If the component source is software package or image package, select an uploaded software package or image package. For details about the upload method, see Component Source.
   *Command	This parameter is mandatory if the component source is Source code repository, the component is deployed in the Kubernetes environment, and the selected technology stack type is Java, Tomcat, Node.js, Python, or PHP. Default command or script: preferentially executes build.sh in the root directory. If build.sh does not exist, the code will be compiled using the common method of the selected language. Example: mvn clean package for Java. Custom command: Commands are customized using the selected language. Alternatively, the default command or script is used after build.sh is modified. NOTICE: If Custom command is selected, exercise caution when inputting sensitive information in the echo, cat, or debug command, or encrypt sensitive information to avoid information leakage. To run the compilation command in the project subdirectory, you need to go to the project subdirectory and then run other script commands. For example: cd ./weather/ mvn clean package
   *Dockerfile Address	This parameter is mandatory if the component source is Source code repository, the component is deployed in the Kubernetes environment, and the selected technology stack type is Java, Tomcat, Node.js, Python, or PHP. Dockerfile Address is the directory where the Dockerfile is located relative to the root directory (./) of the project. The Dockerfile is used to build an image. If Dockerfile Address is not specified, the system searches for the Dockerfile in the root directory of the project by default. If the Dockerfile does not exist in the root directory, the system automatically generates the Dockerfile based on the selected operating environment.
   *Component Version	Component version number, which can be automatically generated or customized. Automatically-generated: Click Generate. By default, the version number is the time when you click Generate. The format is yyyy.mmdd.hhmms, where s is the ones place of the second in the timestamp. For example, if the timestamp is 2022.0803.104321, the version number is 2022.0803.10431. Customized: Enter a value in the format of A.B.C or A.B.C.D. A, B, C, and D are natural numbers. For example, 1.0.0 or 1.0.0.0.
   Resources	The value is fixed to the configuration of the selected historical version and cannot be changed. This parameter is available when the component is deployed in the Kubernetes environment.
   JVM Parameters	The value is fixed to the configuration of the selected historical version and cannot be changed. This parameter is available when the technology stack type is Java or Tomcat. It configures the memory size during Java code running.
   Tomcat	The value is fixed to the configuration of the selected historical version and cannot be changed. This parameter is available when the technology stack type is Tomcat. It configures parameters such as the request path and port number of Tomcat.
   Advanced Settings	If the component is deployed on a container, set Microservice Engine by referring to 10. If the DCS instance bound to the component must be accessed using a password, move the cursor to this DCS instance and click to enter the access password again. If the component is bound to an RDS DB instance, move the cursor to the bound RDS DB instance and click to enter the database account and password again.
   *Deployment Batches	Number of batches in which component instances are upgraded. The value range is [1, Total number of instances]. Total number of instances refers to the number of running instances of the component. For example, if there are 4 component instances and Deployment Batches is set to 2, these component instances are upgraded in two batches, and each batch involves two component instances.
   *Graceful Time Window	This parameter is available when the component is deployed in the Kubernetes environment. You can set a graceful scale-in time window to save important data before a component instance stops. The value ranges from 0 to 9999, in seconds. The default value is 30. For example, if an application has two instances and only one instance will be kept after the scale-in operation, you can still perform certain operations on the instance to be stopped in the specified time window.

7. Click Upgrade.

   In the Deployment Records area, you can view the deployment progress and wait until the deployment is complete.