hyperledger fabric - How to remove a chaincode on peer?

Question

I installed two chaincode on a peer:

☁  basic-network [master] ⚡  ../../bin/peer chaincode list --installed
2018-06-25 10:37:44.825 CST [msp] GetLocalMSP -> DEBU 001 Returning existing local MSP
2018-06-25 10:37:44.825 CST [msp] GetDefaultSigningIdentity -> DEBU 002 Obtaining default signing identity
2018-06-25 10:37:44.825 CST [msp/identity] Sign -> DEBU 003 Sign: plaintext: 0A9C070A5C08031A0C08F8AAC1D90510...74616C6C6564636861696E636F646573
2018-06-25 10:37:44.825 CST [msp/identity] Sign -> DEBU 004 Sign: digest: 3F5F76846525A16930FC348CB24BC6D7C989EAF9D23E090D339C5D0B65E09D0E
Get installed chaincodes on peer:
Name: r_test_cc6, Version: 1.0, Path: chaincode_example02/go, Id: c7d2878644787e34a25b1e4e46703c7da301a830b68eba8e71ba7cadd2fbd480
Name: r_test_cc6, Version: 1.1, Path: github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example02/go, Id: 42583a192be4d33bc2ddc85b3e061971667533019d431729bbac80f8844a00fe
2018-06-25 10:37:44.828 CST [main] main -> INFO 005 Exiting.....

I want to remove or delete the chaincode on a peer. How can I do this?

Answer 1

To remove a chaincode on a peer you need to:

• Kill the container that corresponds to the chaincode shim since a chaincode runs inside a docker container .

• Delete the chaincode from the file system of the peer under /var/hyperledger/production/chaincodes

Answer 2

1) You can upgrade your chaincode and hit request to new chaincode.

adding to @yacovm 's answer -

2) You also need to delete docker image of the chaincode created :

docker images

docker rmi $(docker images chaincode_name -q)

If you want to remove multiple images as once ( assuming your chaincode image name starts with "cc_") try :

docker rmi $(docker images cc_* -q)

Answer 3

The other way of deleting the docker images in Linux

1. To delete all images

docker rmi -f $(docker images -a -q)

2. To delete all containers including its volumes use,

docker rm -vf $(docker ps -a -q)

Note -f: This command force-removes a running container.

Remember, you should remove all the containers before removing all the images from which those containers were created.

Answer 4

You can remove the image.

docker image list (find the image ID eg Image ID 3baa6abf8ac8)

docker image rm -f 3baa6abf8ac8

Answer 5

For Fabric 2.x

1. Kill the chaincode container
2. Delete the chaincode from the file system of the peer under /var/hyperledger/production/lifecycle/chaincodes
3. Restart your peer container.

PS. After restarting the peer container all your chaincode containers will be restarted wait till all the containers are up.

Answer 6

Fabric 2.x - CCAAS

The following is applicable to CC deployed as external service (CCAAS) .

1. Spawn a shell on the peer(s) pod(or container). eg kubectl exec -it peer0-org1-some-alphanumerics sh -n the-namespace
2. check your installed chaincodes: ls /var/hyperledger/production/lifecycle/chaincodes/ .
3. delete the cc you don't want: rm /var/hyperledger/production/lifecycle/chaincodes/someunwantedcc-with-alphanumerics.tat.gz
4. restart the pod(container).

Note: There is also a copy of the cc tgz under the /var/hyperledger/production/externalbuilder/builds/ folder which doesn't seem to block the process.