Updating a Channel Configuration¶
What is a Channel Configuration?¶
通道配置包含与通道管理相关的所有信息。最重要的是，通道配置指定了哪些组织是通道的成员，但它还包含其他通道范围的配置信息，如通道访问策略和区块批大小。
此配置存储在账本的一个区块中，因此称为配置(config)区块。配置区块包含一个配置。第一个区块称为“创世区块”，包含引导通道所需的初始配置。每次通道的配置更改都是通过一个新的配置区块完成的，最新的配置区块表示当前通道配置。排序器和peer将当前通道配置保存在内存中，以方便所有通道操作，例如修剪一个新区块和验证区块交易。
由于配置存储在区块中，所以更新配置是通过一个称为“配置交易”的流程进行的(尽管该流程与普通交易稍有不同)。更新配置是一个获取配置、将配置转换成人类可读的格式、修改配置并提交批准的过程。
要更深入地了解提取配置并将其转换为JSON的过程，请查看向通道添加Org。在这个文档中，我们将重点介绍编辑配置的不同方法以及签名的过程。
Editing a Config¶
通道是高度可配置的，但不是无限可配置的。不同的配置元素有不同的修改策略(指定签署配置更新所需的一组标识)。
要查看可以更改的范围，查看JSON格式的配置非常重要。将一个组织添加到一个通道教程中会生成一个配置，因此，如果您已经阅读了该文档，您可以简单地引用它。对于那些没有配置的人，我们将在这里提供一个配置(为了便于阅读，将这个配置放入一个支持JSON折叠的查看器中可能会有帮助，比如atom或Visual Studio)。
**Click here to see the config**
``` { "channel_group": { "groups": { "Application": { "groups": { "Org1MSP": { "mod_policy": "Admins", "policies": { "Admins": { "mod_policy": "Admins", "policy": { "type": 1, "value": { "identities": [ { "principal": { "msp_identifier": "Org1MSP", "role": "ADMIN" }, "principal_classification": "ROLE" } ], "rule": { "n_out_of": { "n": 1, "rules": [ { "signed_by": 0 } ] } }, "version": 0 } }, "version": "0" }, "Readers": { "mod_policy": "Admins", "policy": { "type": 1, "value": { "identities": [ { "principal": { "msp_identifier": "Org1MSP", "role": "MEMBER" }, "principal_classification": "ROLE" } ], "rule": { "n_out_of": { "n": 1, "rules": [ { "signed_by": 0 } ] } }, "version": 0 } }, "version": "0" }, "Writers": { "mod_policy": "Admins", "policy": { "type": 1, "value": { "identities": [ { "principal": { "msp_identifier": "Org1MSP", "role": "MEMBER" }, "principal_classification": "ROLE" } ], "rule": { "n_out_of": { "n": 1, "rules": [ { "signed_by": 0 } ] } }, "version": 0 } }, "version": "0" } }, "values": { "AnchorPeers": { "mod_policy": "Admins", "value": { "anchor_peers": [ { "host": "peer0.org1.example.com", "port": 7051 } ] }, "version": "0" }, "MSP": { "mod_policy": "Admins", "value": { "config": { "admins": [ "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" ], "crypto_config": { "identity_identifier_hash_function": "SHA256", "signature_hash_family": "SHA2" }, "name": "Org1MSP", "root_certs": [ "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" ], "tls_root_certs": [ "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" ] }, "type": 0 }, "version": "0" } }, "version": "1" }, "Org2MSP": { "mod_policy": "Admins", "policies": { "Admins": { "mod_policy": "Admins", "policy": { "type": 1, "value": { "identities": [ { "principal": { "msp_identifier": "Org2MSP", "role": "ADMIN" }, "principal_classification": "ROLE" } ], "rule": { "n_out_of": { "n": 1, "rules": [ { "signed_by": 0 } ] } }, "version": 0 } }, "version": "0" }, "Readers": { "mod_policy": "Admins", "policy": { "type": 1, "value": { "identities": [ { "principal": { "msp_identifier": "Org2MSP", "role": "MEMBER" }, "principal_classification": "ROLE" } ], "rule": { "n_out_of": { "n": 1, "rules": [ { "signed_by": 0 } ] } }, "version": 0 } }, "version": "0" }, "Writers": { "mod_policy": "Admins", "policy": { "type": 1, "value": { "identities": [ { "principal": { "msp_identifier": "Org2MSP", "role": "MEMBER" }, "principal_classification": "ROLE" } ], "rule": { "n_out_of": { "n": 1, "rules": [ { "signed_by": 0 } ] } }, "version": 0 } }, "version": "0" } }, "values": { "AnchorPeers": { "mod_policy": "Admins", "value": { "anchor_peers": [ { "host": "peer0.org2.example.com", "port": 9051 } ] }, "version": "0" }, "MSP": { "mod_policy": "Admins", "value": { "config": { "admins": [ "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" ], "crypto_config": { "identity_identifier_hash_function": "SHA256", "signature_hash_family": "SHA2" }, "name": "Org2MSP", "root_certs": [ "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" ], "tls_root_certs": [ "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" ] }, "type": 0 }, "version": "0" } }, "version": "1" }, "Org3MSP": { "groups": {}, "mod_policy": "Admins", "policies": { "Admins": { "mod_policy": "Admins", "policy": { "type": 1, "value": { "identities": [ { "principal": { "msp_identifier": "Org3MSP", "role": "ADMIN" }, "principal_classification": "ROLE" } ], "rule": { "n_out_of": { "n": 1, "rules": [ { "signed_by": 0 } ] } }, "version": 0 } }, "version": "0" }, "Readers": { "mod_policy": "Admins", "policy": { "type": 1, "value": { "identities": [ { "principal": { "msp_identifier": "Org3MSP", "role": "MEMBER" }, "principal_classification": "ROLE" } ], "rule": { "n_out_of": { "n": 1, "rules": [ { "signed_by": 0 } ] } }, "version": 0 } }, "version": "0" }, "Writers": { "mod_policy": "Admins", "policy": { "type": 1, "value": { "identities": [ { "principal": { "msp_identifier": "Org3MSP", "role": "MEMBER" }, "principal_classification": "ROLE" } ], "rule": { "n_out_of": { "n": 1, "rules": [ { "signed_by": 0 } ] } }, "version": 0 } }, "version": "0" } }, "values": { "MSP": { "mod_policy": "Admins", "value": { "config": { "admins": [ "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" ], "crypto_config": { "identity_identifier_hash_function": "SHA256", "signature_hash_family": "SHA2" }, "name": "Org3MSP", "root_certs": [ "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" ], "tls_root_certs": [ "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" ] }, "type": 0 }, "version": "0" } }, "version": "0" } }, "mod_policy": "Admins", "policies": { "Admins": { "mod_policy": "Admins", "policy": { "type": 3, "value": { "rule": "MAJORITY", "sub_policy": "Admins" } }, "version": "0" }, "Readers": { "mod_policy": "Admins", "policy": { "type": 3, "value": { "rule": "ANY", "sub_policy": "Readers" } }, "version": "0" }, "Writers": { "mod_policy": "Admins", "policy": { "type": 3, "value": { "rule": "ANY", "sub_policy": "Writers" } }, "version": "0" } }, "version": "1" }, "Orderer": { "groups": { "OrdererOrg": { "mod_policy": "Admins", "policies": { "Admins": { "mod_policy": "Admins", "policy": { "type": 1, "value": { "identities": [ { "principal": { "msp_identifier": "OrdererMSP", "role": "ADMIN" }, "principal_classification": "ROLE" } ], "rule": { "n_out_of": { "n": 1, "rules": [ { "signed_by": 0 } ] } }, "version": 0 } }, "version": "0" }, "Readers": { "mod_policy": "Admins", "policy": { "type": 1, "value": { "identities": [ { "principal": { "msp_identifier": "OrdererMSP", "role": "MEMBER" }, "principal_classification": "ROLE" } ], "rule": { "n_out_of": { "n": 1, "rules": [ { "signed_by": 0 } ] } }, "version": 0 } }, "version": "0" }, "Writers": { "mod_policy": "Admins", "policy": { "type": 1, "value": { "identities": [ { "principal": { "msp_identifier": "OrdererMSP", "role": "MEMBER" }, "principal_classification": "ROLE" } ], "rule": { "n_out_of": { "n": 1, "rules": [ { "signed_by": 0 } ] } }, "version": 0 } }, "version": "0" } }, "values": { "MSP": { "mod_policy": "Admins", "value": { "config": { "admins": [ "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" ], "crypto_config": { "identity_identifier_hash_function": "SHA256", "signature_hash_family": "SHA2" }, "name": "OrdererMSP", "root_certs": [ "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" ], "tls_root_certs": [ "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" ] }, "type": 0 }, "version": "0" } }, "version": "0" } }, "mod_policy": "Admins", "policies": { "Admins": { "mod_policy": "Admins", "policy": { "type": 3, "value": { "rule": "MAJORITY", "sub_policy": "Admins" } }, "version": "0" }, "BlockValidation": { "mod_policy": "Admins", "policy": { "type": 3, "value": { "rule": "ANY", "sub_policy": "Writers" } }, "version": "0" }, "Readers": { "mod_policy": "Admins", "policy": { "type": 3, "value": { "rule": "ANY", "sub_policy": "Readers" } }, "version": "0" }, "Writers": { "mod_policy": "Admins", "policy": { "type": 3, "value": { "rule": "ANY", "sub_policy": "Writers" } }, "version": "0" } }, "values": { "BatchSize": { "mod_policy": "Admins", "value": { "absolute_max_bytes": 103809024, "max_message_count": 10, "preferred_max_bytes": 524288 }, "version": "0" }, "BatchTimeout": { "mod_policy": "Admins", "value": { "timeout": "2s" }, "version": "0" }, "ChannelRestrictions": { "mod_policy": "Admins", "version": "0" }, "ConsensusType": { "mod_policy": "Admins", "value": { "type": "solo" }, "version": "0" } }, "version": "0" } }, "mod_policy": "", "policies": { "Admins": { "mod_policy": "Admins", "policy": { "type": 3, "value": { "rule": "MAJORITY", "sub_policy": "Admins" } }, "version": "0" }, "Readers": { "mod_policy": "Admins", "policy": { "type": 3, "value": { "rule": "ANY", "sub_policy": "Readers" } }, "version": "0" }, "Writers": { "mod_policy": "Admins", "policy": { "type": 3, "value": { "rule": "ANY", "sub_policy": "Writers" } }, "version": "0" } }, "values": { "BlockDataHashingStructure": { "mod_policy": "Admins", "value": { "width": 4294967295 }, "version": "0" }, "Consortium": { "mod_policy": "Admins", "value": { "name": "SampleConsortium" }, "version": "0" }, "HashingAlgorithm": { "mod_policy": "Admins", "value": { "name": "SHA256" }, "version": "0" }, "OrdererAddresses": { "mod_policy": "/Channel/Orderer/Admins", "value": { "addresses": [ "orderer.example.com:7050" ] }, "version": "0" } }, "version": "0" }, "sequence": "3", "type": 0 } ```在这种形式下，配置可能看起来有些吓人，但是一旦您研究了它，您就会发现它有一个逻辑结构。
除了策略的定义(定义谁可以在通道级别做某些事情，以及谁有权更改谁可以更改配置)之外，通道还具有可以使用配置更新修改的其他类型的特性。将一个组织添加到一个通道中是最重要的——将一个组织添加到通道中。其他一些配置更新可以改变的事情包括:
Batch Size. These parameters dictate the number and size of transactions in a block. No block will appear larger than
absolute_max_byteslarge or with more thanmax_message_counttransactions inside the block. If it is possible to construct a block underpreferred_max_bytes, then a block will be cut prematurely, and transactions larger than this size will appear in their own block.{ "absolute_max_bytes": 102760448, "max_message_count": 10, "preferred_max_bytes": 524288 }
Batch Timeout. The amount of time to wait after the first transaction arrives for additional transactions before cutting a block. Decreasing this value will improve latency, but decreasing it too much may decrease throughput by not allowing the block to fill to its maximum capacity.
{ "timeout": "2s" }
Channel Restrictions. The total number of channels the orderer is willing to allocate may be specified as max_count. This is primarily useful in pre-production environments with weak consortium
ChannelCreationpolicies.{ "max_count":1000 }
Channel Creation Policy. Defines the policy value which will be set as the mod_policy for the Application group of new channels for the consortium it is defined in. The signature set attached to the channel creation request will be checked against the instantiation of this policy in the new channel to ensure that the channel creation is authorized. Note that this config value is only set in the orderer system channel.
{ "type": 3, "value": { "rule": "ANY", "sub_policy": "Admins" } }
Kafka brokers. When
ConsensusTypeis set tokafka, thebrokerslist enumerates some subset (or preferably all) of the Kafka brokers for the orderer to initially connect to at startup. Note that it is not possible to change your consensus type after it has been established (during the bootstrapping of the genesis block).{ "brokers": [ "kafka0:9092", "kafka1:9092", "kafka2:9092", "kafka3:9092" ] }
Anchor Peers Definition. Defines the location of the anchor peers for each Org.
{ "host": "peer0.org2.example.com", "port": 9051 }
Hashing Structure. The block data is an array of byte arrays. The hash of the block data is computed as a Merkle tree. This value specifies the width of that Merkle tree. For the time being, this value is fixed to
4294967295which corresponds to a simple flat hash of the concatenation of the block data bytes.{ "width": 4294967295 }
Hashing Algorithm. The algorithm used for computing the hash values encoded into the blocks of the blockchain. In particular, this affects the data hash, and the previous block hash fields of the block. Note, this field currently only has one valid value (
SHA256) and should not be changed.{ "name": "SHA256" }
Block Validation. This policy specifies the signature requirements for a block to be considered valid. By default, it requires a signature from some member of the ordering org.
{ "type": 3, "value": { "rule": "ANY", "sub_policy": "Writers" } }
Orderer Address. A list of addresses where clients may invoke the orderer
BroadcastandDeliverfunctions. The peer randomly chooses among these addresses and fails over between them for retrieving blocks.{ "addresses": [ "orderer.example.com:7050" ] }
正如我们通过添加组织的构件和MSP信息来添加组织一样，您也可以通过逆转流程来删除它们。
注意，一旦定义了共识类型并引导了网络，就不能通过配置更新来更改它。
还有另一个重要的通道配置(特别是对于v1.1)，称为功能需求。它有自己的文档，可以在这里找到。
假设您想要编辑通道的区块批大小(因为这是一个单一的数字字段，这是最容易进行的更改之一)。首先，为了方便引用JSON路径，我们将其定义为一个环境变量。
要建立此功能，请查看您的配置，找到您要查找的内容，然后回溯路径。
例如，如果您发现批大小，您将看到它是排序器的一个值。排序器可以在groups下找到，它位于channel_group下。批大小值在max_message_count值下有一个参数。
这条路径是这样的:
export MAXBATCHSIZEPATH=".channel_group.groups.Orderer.values.BatchSize.value.max_message_count"
接下来，显示该属性的值:
jq "$MAXBATCHSIZEPATH" config.json
它应该返回一个值10(至少在我们的示例网络中)。
现在，让我们设置新的批大小并显示新值:
jq “$MAXBATCHSIZEPATH = 20” config.json > modified_config.json
jq “$MAXBATCHSIZEPATH” modified_config.json
一旦修改了JSON，就可以对其进行转换并提交了。将Org添加到通道中的脚本和步骤将指导您完成转换JSON的过程，所以让我们来看看提交它的过程。
Get the Necessary Signatures¶
一旦您成功地生成了protobuf文件，就可以对它进行签名了。要做到这一点，你需要知道你要改变的东西的相关策略。
默认情况下，编辑配置:
A particular org (for example, changing anchor peers) requires only the admin signature of that org.
The application (like who the member orgs are) requires a majority of the application organizations’ admins to sign.
The orderer requires a majority of the ordering organizations’ admins (of which there are by default only 1).
The top level
channelgroup requires both the agreement of a majority of application organization admins and orderer organization admins.
如果您对通道中的默认策略进行了更改，则需要相应地计算签名需求。
注意:您可以根据您的应用程序编写收集签名的脚本。一般来说，您收集的签名可能总是比要求的多。
获得这些签名的实际过程将取决于您如何设置系统，但是有两个主要实现。目前，Fabric命令行默认为“pass it along”系统。也就是说，提出配置更新的组织的管理员将更新发送给需要签名的其他人(通常是另一个管理员)。这个管理员对它进行签名(或者不签名)，并将其传递给下一个管理员，以此类推，直到有足够的签名来提交配置为止。
这具有简单性的优点——当有足够的签名时，最后一个管理员可以简单地提交配置交易(在Fabric中，peer channel update命令默认包含一个签名)。但是，这个过程只在较小的通道中实用，因为“pass it along”方法可能会很耗时。
另一个选项是向通道上的每个管理员提交更新，并等待足够的签名返回。然后可以将这些签名装订在一起并提交。这使得创建配置更新的管理员(强制他们为每个签名者处理一个文件)的工作变得更加困难，但是对于正在开发Fabric管理应用程序的用户来说，这是推荐的工作流。
一旦配置被添加到账本中，最好将其拉出并将其转换为JSON，以检查是否正确地添加了所有内容。这也将作为最新配置的有用副本。