Uninstall Chaincode on BYFN Peers

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Q

How to uninstall chaincodes on BYFN Peers?

✍: FYIcenter.com

A

Unfortunately, the BYFN CLI "peer chaincode" command does offer any option to uninstall chaincodes from a given peer.

You have two options when your chaincodes from different peers are out of sync or incompatible:

1. Destroy chaincode instance and re-install chaincode on all peers.

Stop the chaincode container running on the Docker engine.
Remove the chaincode container image from the Docker engine. The chaincode instance data will be gone.
Re-install the chaincode on all peers.
Instantiate the chaincode from one peer.

2. Upgrade chaincode instance to the next version to fix the issue.

Install the chaincode as a new version on all peers with the same chaincode source code.
Upgrade the chaincode instance to the new version from one peer.

⇒ Upgrade Chaincode Instance on BYFN

⇐ BYFN Chaincode Docker Container

⇑ BYFN (Build Your First Network)

⇑⇑ Hyperledger Tutorials

2020-09-15, ∼1907🔥, 0💬

Remove Older Versions Chaincode Containers
How to Remove Older Versions Chaincode Containers after the chaincode instance is upgraded? After a chaincode instance is upgraded, chaincode containers of the old version are still running on the Docker Engine. You can follow this tutorial to remove them. 1. List all chaincode containers: $ docker ... 2020-08-13, ∼1905🔥, 0💬

Query Chaincode Property on BYFN Channel
How to Query Chaincode Property on BYFN Channel? An instance of a chaincode can be viewed as an object of a class in an execution environment. It can hold properties. You can run the "peer chaincode query" command to query the current value of a given property of a given chaincode instance. 1. Verif... 2020-09-30, ∼1754🔥, 0💬

BYFN CLI "peer" Command Prefix
How to use BYFN CLI "peer" Command Prefix? By default, when you run the "peer" command on the BYFN CLI container, it will be executed again the default peer node specified by 4 environment variables: CORE_PEER_MSPCONFIGPATH=/opt/g opath/.../org1.example.com/use rs/Admin@org1.example.com/mspCORE_PEER_... 2020-09-15, ∼1748🔥, 0💬

Upgrade Chaincode Instance on BYFN
How to upgrade chaincode instance on BYFN? You can follow this tutorial to upgrade the chaincode instance on BYFN. You can use this process to fix any issues with chaincode instance without destroy its data. 1. Install new version, 2.0, of the chaincode on the default peer, peer0.org1. bash-4.4# ech... 2020-09-12, ∼1695🔥, 1💬

Invoke Chaincode Transaction on BYFN Channel
How to Invoke Chaincode Transaction on BYFN Channel? An instance of a chaincode can be viewed as an object of a class in an execution environment. It can hold transaction operations to manage its properties. You can run the "peer chaincode invoke" command to invoke the "Invoke" operation of a given ... 2020-09-30, ∼1685🔥, 0💬

"peer chaincode invoke" on BYFN
How to run "peer chaincode invoke" to invoke the transaction on the chaincode instance? After a chaincode in properly installed on all peers and instantiated on the channel, you can run the "peer chaincode invoke" to invoke the transaction on the chaincode instance. 1. Verify instantiated chaincode:... 2020-08-13, ∼1674🔥, 0💬

BYFN Chaincode Docker Container
What is the BYFN chaincode Docker container? The BYFN chaincode Docker container represents the running instance of the "mycc" chaincode. When "mycc" chaincode is instantiated from peer0.org1, a chaincode Docker container (shim) is deployed and started on the Docker engine. You can find chaincode co... 2020-09-15, ∼1654🔥, 0💬

Inspect Transaction Blocks of Channel Blockchain
How to Inspect Transaction Blocks of Channel Blockchain? You can follow this tutorial to Inspect Transaction Blocks of Channel Blockchain. 1. Connect to the CLI container of the Hyperledger Fabric network: $ docker exec -it cli bash bash-4.4# 2. Download (fetch) the newest block from "mychannel" cha... 2020-08-13, ∼1576🔥, 0💬

Incompatible Chaincode on BYFN Peers
How to list installed and instantiated chaincodes on BYFN Peers? You can follow this tutorial to list and review installed and instantiated chaincodes on peer nodes of your BYFN network. 1. Connect to the BYFN CLI container and check the default peer: $ docker exec -it cli bash bash-4.4# echo $CORE_... 2020-09-15, ∼1564🔥, 0💬

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