Important
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Troubleshooting¶
If the start script does not complete successfully, please go through the following troubleshooting steps.
Docker¶
Verify that the status of all the Docker containers show
Up
state.docker-compose ps
In the advanced Docker preferences settings, verify the following resources are allocated to Docker:
- Memory: at least 8 GB (default is 2 GB)
- CPU cores: at least 2 cores
Verify you have not run out of disk storage needed for Docker’s “disk image” file (Docker documentation).
Logs¶
If the script errors out before completing, or if there are Docker containers that are not in
Up
state, view the container’s logs with the commanddocker-compose logs [container]
and look for error messages and exceptions.docker-compose logs
If there are any errors that indicate issues with TLS communication, verify that the TLS certificates were properly generated and that there are no errors in the following files:
ls scripts/security/*.log
Security¶
If there are any errors that indicate issues with TLS communication, force TLS certificates to be regenerated by starting the script with
CLEAN=true
:CLEAN=true ./scripts/start.sh
If a command that communicates with ZooKeeper appears to be failing with the error
org.apache.zookeeper.KeeperException$NoAuthException
, change the container you are running the command from to be eitherkafka1
orkafka2
. This is because ZooKeeper is configured for SASL/DIGEST-MD5, and any commands that communicate with ZooKeeper need properties set for ZooKeeper authentication.
Validate¶
Verify there are messages in the |ak| topics, including
wikipedia.parsed
:./scripts/consumers/listen.sh
Run the :devx-cp-demo:`validation scripts|scripts/validate/` to verify that they pass.
cd scripts/validate/
CLI Login¶
If you are running
cp-demo
for a long time and issuing Confluent CLI commands on thetools
container that error out with:Your token has expired. You are now logged out. Error: You must log in to run that command.
Then run the following command, which refreshes the token by logging back in to MDS:
./scripts/helper/refresh_mds_login.sh