cassandra-a

# Cassandra Container Troubleshooting Guide

When running a Cassandra container, you might encounter issues that prevent it from starting correctly. This guide will help you troubleshoot a failed Cassandra container step-by-step. Cassandra container it step-by-step:

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🔍 1. Check Container Status

First, see the current status of all containers (including stopped ones):

docker ps -a

Look for the Cassandra container and note the STATUS and EXIT CODE.

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🧾 2. Get Container Logs

Next, check the logs to see what caused the failure:

docker logs cassandra

You’ll often see helpful error messages like:

• JVM heap size issues

• Volume mount errors

• Unable to write to disk

• Port conflicts

• Init script failures

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🧹 3. Remove and Re-Run (Optional)

If you want to quickly reset and re-run with corrected settings:

docker rm cassandra

Then re-run the container with a more appropriate volume mount:

docker run --name cassandra -p 9042:9042 -v /opt/cassandra:/var/lib/cassandra -d cassandra

Cassandra stores its actual data in /var/lib/cassandra — mounting to /opt/cassandra won’t persist anything useful.

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