v3.0.0-rc1 release commit

Signed-off-by: David Enyeart <[email protected]>

Author: denyeart

release_notes/v3.0.0-rc1.md

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+v3.0.0-rc1 Release Notes - September 17, 2024
+=============================================
+
+New features
+------------
+
+**Byzantine Fault Tolerant (BFT) ordering service**
+
+Hyperledger Fabric has utilized a Raft crash fault tolerant (CFT) ordering service since version v1.4.1.
+A Byzantine Fault Tolerant (BFT) ordering service can withstand not only crash failures, but also a subset of nodes behaving maliciously.
+Fabric v3.0.0 provides a BFT ordering service based on the [SmartBFT](https://arxiv.org/abs/2107.06922) [consensus library](https://github.com/hyperledger-labs/SmartBFT).
+Consider using the BFT orderer if true decentralization is required, where up to and not including a third of the parties running the orderers may not be trusted due to malicious intent or being compromised.
+Channel capability `V3_0` must be enabled to utilize SmartBFT consensus.
+For more details of the BFT ordering service and other recent features, see the [What's New documentation](https://hyperledger-fabric.readthedocs.io/en/latest/whatsnew.html).
+
+**Query all approved chaincodes on a channel**
+
+The updated `peer lifecycle chaincode queryapproved` command allows you to pass only a channel name.
+The command will return all approved chaincodes on the channel.
+
+**Support for Ed25519**
+
+Ed25519 cryptographic algorithm is now supported in addition to ECDSA for MSP functions including transaction signing and verification.
+Channel capability `V3_0` must be enabled to utilize certificates with Ed25519 keys.
+
+
+Improvements and Fixes
+----------------------
+
+All improvements and fixes as of v2.5.9 have also been included in v3.0.0.
+
+
+Dependencies
+------------
+Fabric v3.0.0 has been tested with the following dependencies:
+* Go 1.23.1
+* CouchDB v3.3.3
+
+Fabric docker images on dockerhub utilize Ubuntu 22.04.
+
+
+Changes
+-------
+
+**peer.gossip.pvtData.transientstoreMaxBlockRetention default value increased from 1000 to 20000**
+
+`peer.gossip.pvtData.transientstoreMaxBlockRetention` specifies the number of blocks to keep uncommitted private data
+in the transient store before it is purged. Increasing the value provides more tolerance for delayed commits
+before the data is purged.
+
+**TimeWindowCheck for proposal timestamps**
+
+New `TimeWindowCheck` endorsement authFilter configured at `peer.handlers.authFilters.name` checks the timestamp of a proposal request against endorsing peer time,
+using the time window configured at `peer.authentication.timewindow`.
+This check helps to ensure that the proposal timestamp that eventually gets committed in a transaction is accurate relative to the endorsing peers.
+
+**peer.deliveryclient.blockGossipEnabled default value changed to false** 
+
+Block dissemination via gossip is deprecated and may be removed in a future release,
+therefore `peer.deliveryclient.blockGossipEnabled` now defaults to false.
+Fabric peers should be configured to receive blocks directly from an ordering service
+node, and not gossip blocks, by using the following configuration:
+```
+peer.gossip.orgLeader: true
+peer.gossip.useLeaderElection: false
+peer.gossip.state.enabled: false
+peer.deliveryclient.blockGossipEnabled: false
+```
+
+Removals
+--------
+
+**Support for ordering service system channel has been removed**
+
+v2.3 introduced the ability to manage an ordering service without a system channel.
+Managing an ordering service without a system channel has privacy, scalability, and operational benefits.
+The system channel is removed in Fabric v3.0, as well as the concept of a 'consortium' of organizations that can create channels.
+If you used the system channel in prior releases, you must remove the system channel and migrate to the channel participation API before upgrading to v3.x.
+For information about removal of the system channel, see the [Create a channel without system channel documentation](https://hyperledger-fabric.readthedocs.io/en/release-2.5/create_channel/create_channel_participation.html).
+
+**Support for 'Solo' consensus ordering service has been removed**
+
+The 'Solo' consensus type was intended for test environments only in prior releases and has never been supported for production environments.
+Support for 'Solo' consensus has been removed in Fabric v3.0.
+For trial environments you can utilize a single node Raft ordering service as demonstrated in the [test network tutorial](https://hyperledger-fabric.readthedocs.io/en/latest/test_network.html).
+
+**Support for 'Kafka' consensus ordering service has been removed**
+
+The 'Raft' consensus type was introduced in v1.4.1 and has become the preferred production Crash Fault Tolerant consensus type.
+Support for 'Kafka' consensus has been removed in Fabric v3.0.
+If you used Kafka consensus in prior releases, you must migrate to Raft consensus prior to upgrading to v3.x.
+For details about the migration process, see the [Migrating from Kafka to Raft documentation](https://hyperledger-fabric.readthedocs.io/en/release-2.5/kafka_raft_migration.html).
+
+**Legacy chaincode lifecycle has been removed**
+
+The legacy chaincode lifecycle from Fabric v1.x is removed in v3.x.
+Prior to upgrading peers to v3.x, you must update all channels to utilize the v2.x lifecycle
+by setting the channel application capability to either V2_0 or V2_5,
+and redeploying all chaincodes using the v2.x lifecycle. The new
+chaincode lifecycle provides a more flexible and robust governance model
+for chaincodes. For more details see the
+[documentation for enabling the new lifecycle](https://hyperledger-fabric.readthedocs.io/en/release-2.5/enable_cc_lifecycle.html).
+
+**Support for specifying orderer endpoints at the `OrdererAddresses` global level in channel configuration has been removed when using V3_0 channel capability**
+
+Utilize the new 'OrdererEndpoints' stanza within the channel configuration of an organization instead.
+Configuring orderer endpoints at the organization level accommodates
+scenarios where orderers are run by different organizations. Using
+this configuration ensures that only the TLS CA certificates of that organization
+are used for orderer communications; in contrast to the global channel level endpoints which
+would cause an aggregation of all orderer TLS CA certificates across
+all orderer organizations to be used for orderer communications.
+Remove the `OrdererAddresses` global configuration prior to enabling the `V3_0` channel capability.
+
+**Support for configtxgen flag `--outputAnchorPeersUpdate` has been removed**
+
+The former `--outputAnchorPeersUpdate` mechanism for updating anchor peers has always had
+limitations (for instance, it only works the first time anchor peers are updated).
+Instead, anchor peer updates should be performed through channel configuration updates.
+
+**The fabric-tools docker image is no longer available**
+
+The fabric-tools docker image is no longer published for Fabric releases.
+Instead of using the fabric-tools docker image, users should utilize the
+published Fabric binaries. The Fabric binaries can be used to make client calls
+to Fabric runtime components, regardless of where the Fabric components are running.
+
+Deprecated features
+-------------------
+
+**Block dissemination via gossip is deprecated and may be removed**
+
+Block dissemination via gossip is deprecated and may be removed in a future release.
+Fabric peers can be configured to receive blocks directly from an ordering service
+node, and not gossip blocks, by using the following configuration:
+```
+peer.gossip.orgLeader: true
+peer.gossip.useLeaderElection: false
+peer.gossip.state.enabled: false
+peer.deliveryclient.blockGossipEnabled: false
+```