Menu Close

How do you delete a channel on Hyperledger fabric?

How do you delete a channel on Hyperledger fabric?

There’s no way to delete an existing channel from the Blockchain network. You can only append new data(normal transactions or configuration update) to the Blockchain network.

What is Hyperledger Chaincode?

Chaincode is a piece of code that is written in one of the supported languages such as Go or Java. It is installed and instantiated through an SDK or CLI onto a network of Hyperledger Fabric peer nodes, enabling interaction with that network’s shared ledger.

How do you upgrade the Chaincode on Hyperledger fabric?

Scenario 2: Upgrade Chaincode

  1. Step 1: Package SACC chaincode.
  2. Step 2: Install chaincode package.
  3. Step 3: Approve Chaincode Definition.
  4. Step 4: Commit Chaincode Definition.
  5. Step 5: Chaincode Function Invoke Demonstration.
  6. Step 6: Package a new SACC chaincode.
  7. Step 7: Install chaincode package.

Can we update the role of peers in Hyperledger?

Although ledger-updating applications also connect to peers to invoke a chaincode, unlike with ledger-querying applications, an individual peer cannot perform a ledger update at this time, because other peers must first agree to the change — a process called consensus.

What are channels in Hyperledger Fabric?

A Hyperledger Fabric channel is a private “subnet” of communication between two or more specific network members, for the purpose of conducting private and confidential transactions.

What is identity management in Hyperledger Fabric?

Identity management To enable permissioned networks, Hyperledger Fabric provides a membership identity service that manages user IDs and authenticates all participants on the network. Access control lists can be used to provide additional layers of permission through authorization of specific network operations.

Is Hyperledger private blockchain?

Hyperledger Fabric is one of the blockchain projects within Hyperledger. Like other blockchain technologies, it has a ledger, uses smart contracts, and is a system by which participants manage their transactions. Where Hyperledger Fabric breaks from some other blockchain systems is that it is private and permissioned.

How many types of peers does Hyperledger fabric have?

two different types
Peers maintain the state of the network and a copy of the ledger. There are two different types of peers: endorsing and committing peers. However, there is an overlap between endorsing and committing peers, in that endorsing peers are a special kind of committing peers.

How to remove a chaincode on Hyperledger Fabric?

You can remove the image. Restart your peer container. PS. After restarting the peer container all your chaincode containers will be restarted wait till all the containers are up. Thanks for contributing an answer to Stack Overflow!

Can you create a channel in Hyperledger chaincode?

Couldn’t create my channel and got following error: 2021-01-27 10:32:42.643 UTC [channelCmd] InitCmdFactory -> INFO 001 Endorser and orderer connections initialized Error: got unexpected status: During fabcar_router coding, the caURL states that url is undefined. There was no problem with npm import. I couldn’t find any problem.

How does a peer chaincode upgrade work?

peer chaincode upgrade Upgrade an existing chaincode with the specified one. The new chaincode will immediately replace the existing chaincode upon the transaction committed.

Who is responsible for chaincode in Docker container?

Once a chaincode has been properly endorsed, it can be installed and instantiated on Peers in the network. During the instantiation process, the Peer uses Docker to run a container with the chaincode inside. The Peer is responsible for managing the chaincode container’s lifecycle and networking.

You can remove the image. Restart your peer container. PS. After restarting the peer container all your chaincode containers will be restarted wait till all the containers are up. Thanks for contributing an answer to Stack Overflow!

Couldn’t create my channel and got following error: 2021-01-27 10:32:42.643 UTC [channelCmd] InitCmdFactory -> INFO 001 Endorser and orderer connections initialized Error: got unexpected status: During fabcar_router coding, the caURL states that url is undefined. There was no problem with npm import. I couldn’t find any problem.

peer chaincode upgrade Upgrade an existing chaincode with the specified one. The new chaincode will immediately replace the existing chaincode upon the transaction committed.

How to access Hyperledger Fabric inside Kubernetes?

Using Hyperledger Fabric inside Kubernetes, how we can access chaincode container logging at /root/.npm/_logs/*.log when the compiling failed and chaincode container is not up? “prime-prd” I need to, somehow, communicate with a Vault instance from some chaincode.