在Corda中重新部署节点后，如何在H2数据库中保留数据? [英] How to persist data in H2 Database after node redeployment in Corda?

问题描述

我想在Node Deployment之后将数据保留在Corda H2数据库中.当我再次重新部署节点时，数据就消失了.即使在节点中进行更改并部署它们之后，我的数据仍然可以保持持久吗?

I want to persist data in Corda H2 database after Node Deployment . The data got wiped out when I redeploy the nodes again . Is there any way that my data got persistent even after I make changes in my node and deploy them ?

推荐答案

每次运行 gradlew deployNodes 时，将删除并重新创建节点文件夹，从而删除数据.但是，不需要不断地重新部署节点.

Every time you run gradlew deployNodes, the node folders will be deleted and re-created, removing your data. However, there is no need to constantly re-deploy the nodes.

如果要更改节点的配置，只需编辑节点的 node.conf 文件，如下所示:

If you want to make changes to your nodes' configuration, simply edit the nodes' node.conf files, as described here: https://docs.corda.net/corda-configuration-file.html.

如果要更改CorDapp，可以执行以下操作:

If you want to make changes to your CorDapp, you can do the following:

• 对CorDapp的代码进行必要的更改
• 从CorDapp项目的根目录运行 gradlew jar 为您的CorDapp创建更新的JAR
• 将新的CorDapp JAR从 build/libs 文件夹复制到每个节点的 plugins / cordapps 文件夹
• 重新启动节点的Java进程

• Make the required changes to your CorDapp's code
• Run gradlew jar from the root of your CorDapp project to create an updated JAR for your CorDapp
• Copy the new CorDapp JAR from the build/libs folder to each node's plugins/cordapps folder
• Restarting the node's Java process

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