How to watch the log file of Peer Container Log?

You can follow this tutorial to watch the log file of a peer container:

1. Set up a new terminal on the hosting system to follow the log file of the "peer0.org1.example.com" container:

$ docker logs --tail 10 -f  peer0.org1.example.com

[gossip.comm] func1 -> WARN 2e5e9 peer1.org2.example.com:7051, \
   PKIid:30999a1ad969be31510d17761c78eaed1a21d163353a63226dd95d807076b1df 
   isn't responsive: EOF
[gossip.discovery] expireDeadMembers -> WARN 2e5ea Entering \
   [30999a1ad969be31510d17761c78eaed1a21d163353a63226dd95d807076b1df]
[gossip.discovery] expireDeadMembers -> WARN 2e5eb Closing connection to Endpoint: 
   peer1.org2.example.com:7051, InternalEndpoint: , \
   PKI-ID: 30999a1ad969be31510d17761c78eaed1a21d163353a63226dd95d807076b1df, Metadata:
[gossip.discovery] expireDeadMembers -> WARN 2e5ec Exiting

...

[gossip.comm] func1 -> WARN 2e601 peer1.org2.example.com:7051, \
   PKIid:30999a1ad969be31510d17761c78eaed1a21d163353a63226dd95d807076b1df 
   isn't responsive: EOF
[gossip.discovery] expireDeadMembers -> WARN 2e602 Entering \
   [30999a1ad969be31510d17761c78eaed1a21d163353a63226dd95d807076b1df]
[gossip.discovery] expireDeadMembers -> WARN 2e603 Closing connection to Endpoint: 
   peer1.org2.example.com:7051, InternalEndpoint: , \
   PKI-ID: 30999a1ad969be31510d17761c78eaed1a21d163353a63226dd95d807076b1df, Metadata:
[gossip.discovery] expireDeadMembers -> WARN 2e604 Exiting

You may notice that the last log messages keep coming up. It seems to say that the "peer1.org2.example.com" is dead member in the network.

2. Use another terminal to query the chaincode:

$ docker exec -it cli bash

bash-4.4# peer chaincode query -C mychannel -n mycc -c '{"Args":["query","a"]}'
90

Two new messages printed on the peer log window, one warning and one information:

[endorser] callChaincode -> INFO 2e84e [mychannel][8b392ade] Entry chaincode: name:"mycc"
[endorser] callChaincode -> INFO 2e84f [mychannel][8b392ade] Exit chaincode: name:"mycc"  (9ms)
[comm.grpc.server] 1 -> INFO 2e850 unary call completed grpc.service=protos.Endorser \
   grpc.method=ProcessProposal grpc.peer_address=192.168.1.7:35616 \
   grpc.code=OK grpc.call_duration=10.295092ms

⇒ Peer Containers Not Joined to Channel

⇐ Watch "orderer" Container Log

⇑ Hyperledger Fabric Docker Containers

⇑⇑ Hyperledger Tutorials