dosubot[bot] commented on issue #31749:
URL: https://github.com/apache/superset/issues/31749#issuecomment-2577349854
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To resolve the Python modules error related to MySQL when upgrading Apache
Superset from version 4.0.1 to 4.1.1 using Helm charts on AKS, you need to
modify your `dev-values.yaml` file to include a `bootstrapScript` that installs
the necessary MySQL and PostgreSQL drivers. Here is the updated code snippet to
include:
```yaml
bootstrapScript: |
#!/bin/bash
# Update system packages and install dependencies
apt update && apt install -y gcc libpq-dev python3-dev pkg-config
libmysqlclient-dev && \
# Install Python dependencies
pip install psycopg2==2.9.6 \
sqlalchemy-bigquery==1.6.1 \
elasticsearch-dbapi==0.2.5 \
mysqlclient && \
# Create a bootstrap log file if not already created
if [ ! -f ~/bootstrap ]; then
echo "Running Superset with uid {{ .Values.runAsUser }}" > ~/bootstrap
fi
```
This script ensures that the necessary system packages (`pkg-config`,
`libmysqlclient-dev`) and Python dependencies (`psycopg2`, `mysqlclient`) are
installed, which resolves the 'No module named MySQLdb' error. Starting from
Superset version 4.1.0, database drivers like MySQL were intentionally removed
from the base Docker image to create a leaner image. Therefore, you need to
manually install the required drivers by creating a custom Dockerfile that
includes the necessary build dependencies before installing the database
drivers <sup>[[1]](https://github.com/apache/superset/discussions/31432)</sup>.
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