Troubleshooting

This section provides you a list of possible causes and solutions to debug and resolve issues that you might face while upgrading HDP to CDP Private Cloud Base cluster.

Accessing CMA root folder in Docker

If you used docker to upgrade, create a bash session inside the container and go to the am2cm folder by running the following command: docker container exec -it <container_id> /bin/bash

Examining CMA Server logs

Access the CMA root folder in docker. The AM2CM (CMA) server logs are in the $AM2CM_ROOT directory with the name am2cm-server.log.

Examining Transition Data

Access the CMA root folder in docker. Use the transition id of your transition to enter $AM2CM_ROOT/data/<transition id>

Adding or removing transition steps

Access the CMA root folder in docker. Run the following command: cd am2cm-server/config/transitions

You will see transition-definition.yml

Manually editing Ansible input parameters

Access the CMA root folder in docker. Run the following command: cd data/<transition id>

Editing transition parameters

<transition id>-inventory.ini: Inventory file with the hostnames and roles

<transition id>-vars.json & group_vars/: Ansible input that is extracted during the registration process

<transition id>-user-settings.ini: Input used by the am2cm tool. For more information, see Transitioning HDP 3.1.5 cluster to CDP Private Cloud Base 7.1.x cluster using the AM2CM tool.

conf/: Other configurations used by the am2cm tool

logs/: Logs from the ansible and tools used during the transition

Rewriting the Ansible scripts

You can change and add new Ansible scripts. All scripts are located in the folder am2cm-ansible. To change the ansible scripts, grep recursively for the tags that you want to change.