At a high level, upgrading a Fabric network to v1.2 can be performed by following these steps:
- Upgrade the binaries for the ordering service, the Fabric CA, and the peers. These upgrades may be done in parallel.
- Upgrade client SDKs.
- Enable the v1.2 capability.
- (Optional) Upgrade the Kafka cluster.
To help understand this process, we've created the upgrading_your_network_tutorial tutorial that will take you through most of the major upgrade steps, including upgrading peers, orderers, as well as the capability. We've included both a script as well as the individual steps to achieve these upgrades.
Because our tutorial leverages the build_network (BYFN) sample, it has certain limitations (it does not use Fabric CA, for example). Therefore we have included a section at the end of the tutorial that will show how to upgrade your CA, Kafka clusters, CouchDB, Zookeeper, vendored chaincode shims, and Node SDK clients.
If you want to learn more about capability requirements, click here.