Special debug images¶
For the cases when Pods are failing for some reason or just show abnormal behavior, the Operator can be used with a special debug image of the Percona Server for MongoDB, which has the following specifics:
- it avoids restarting on fail,
- it contains additional tools useful for debugging (sudo, telnet, gdb, mongodb-debuginfo package, etc.),
- extra verbosity is added to the mongodb daemon.
Images are available for Percona server for MongoDB versions 5.0 and 6.0, not for 7.0.
Particularly, using this image is useful if the container entry point fails
(mongod crashes). In such a situation, Pod is continuously restarting.
Continuous restarts prevent to get console access to the container,
and so a special approach is needed to make fixes.
To use the debug image instead of the normal one, set the following image name
for the image key in the deploy/cr.yaml configuration file:
percona/percona-server-mongodb:6.0.18-15-debug
The Pod should be restarted to get the new image.
Note
When the Pod is continuously restarting, you may have to delete it to apply image changes.