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98 lines
4.1 KiB
ReStructuredText
98 lines
4.1 KiB
ReStructuredText
Deploying a node
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================
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Using Gradle to build nodes
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---------------------------
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Nodes are usually built using a Gradle task. The canonical Gradle file for building nodes is the one used by the
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CorDapp template. Both a `Java version <https://github.com/corda/cordapp-template-java/blob/master/build.gradle>`_ and
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a `Kotlin version <https://github.com/corda/cordapp-template-kotlin/blob/master/build.gradle>`_ are available.
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Cordform is the local node deployment system for CorDapps. The nodes generated are intended for experimenting,
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debugging, and testing node configurations, but not for production or testnet deployment.
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Here is an example Gradle task called ``deployNodes`` that uses the Cordform plugin to deploy three nodes, plus a
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notary node:
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.. sourcecode:: groovy
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task deployNodes(type: net.corda.plugins.Cordform, dependsOn: ['jar']) {
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directory "./build/nodes"
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node {
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name "O=Controller,OU=corda,L=London,C=UK"
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notary = [validating : true]
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p2pPort 10002
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rpcPort 10003
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webPort 10004
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cordapps = []
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}
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node {
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name "CN=NodeA,O=NodeA,L=London,C=UK"
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p2pPort 10005
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rpcPort 10006
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webPort 10007
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cordapps = []
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rpcUsers = [[ user: "user1", "password": "test", "permissions": []]]
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}
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node {
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name "CN=NodeB,O=NodeB,L=New York,C=US"
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p2pPort 10008
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rpcPort 10009
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webPort 10010
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cordapps = []
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rpcUsers = [[ user: "user1", "password": "test", "permissions": []]]
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}
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// Example of explicit addresses being used.
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node {
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name "CN=NodeC,O=NodeC,L=Paris,C=FR"
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p2pAddress "localhost:10011"
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rpcAddress "localhost:10012"
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webAddress "localhost:10013"
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cordapps = []
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rpcUsers = [[ user: "user1", "password": "test", "permissions": []]]
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}
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}
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You can extend ``deployNodes`` to generate any number of nodes you like.
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.. warning:: When adding nodes, make sure that there are no port clashes!
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If your CorDapp is written in Java, you should also add the following Gradle snippet so that you can pass named arguments to your flows via the Corda shell:
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.. sourcecode:: groovy
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tasks.withType(JavaCompile) {
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options.compilerArgs << "-parameters"
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}
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Any CorDapps defined in the project's source folders are also automatically registered with all the nodes defined in
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``deployNodes``, even if the CorDapps are not listed in each node's ``cordapps`` entry.
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Deploying your nodes
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--------------------
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You deploy a set of nodes by running your ``build.gradle`` file's Cordform task. For example, if we were using the
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standard ``deployNodes`` task defined above, we'd create our nodes by running the following commands in a terminal
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window from the root of the project:
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* Unix/Mac OSX: ``./gradlew deployNodes``
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* Windows: ``gradlew.bat deployNodes``
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After the build process has finished, you will find the newly-built nodes under ``kotlin-source/build/nodes``. There
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will be one folder generated for each node you built, plus a ``runnodes`` shell script (or batch file on Windows) to
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run all the nodes at once. Each node in the ``nodes`` folder has the following structure:
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.. sourcecode:: none
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. nodeName
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├── corda.jar // The Corda runtime
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├── node.conf // The node's configuration
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├── cordapps // Any installed CorDapps
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└── additional-node-infos // Directory containing all the addresses and certificates of the other nodes.
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.. note:: During the build process each node generates a NodeInfo file which is written in its own root directory,
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the plug-in proceeds and copies each node NodeInfo to every other node ``additional-node-infos`` directory.
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The NodeInfo file contains a node hostname and port, legal name and security certificate.
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.. note:: Outside of development environments, do not store your node directories in the build folder.
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If you make any changes to your ``deployNodes`` task, you will need to re-run the task to see the changes take effect.
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