Untitled | DataStax Enterprise

Creating custom preflight check

Create a custom preflight check to detect and fix specified configuration settings on DataStax Enterprise (DSE) nodes.

Create a new Python file in /checks:
```
cd /checks
```
```
touch my_test.py
```
Add the new test to the all section of /checks/init.py:
```
__all__ = ['my_test', 'disk', 'blockdev', ...]
```
Add your test to the preflight_check script.
Run the preflight check script with the new test:
```
sudo ./preflight_check [ options ]
```