3804484 - Logs are not visible or OpenSearch is not accessible due to the disk space usage

Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental.

In some cases, logs may stop being collected, or nothing might appear after login into the system or the system itself might even become inaccessible. These symptoms may be related to high space usage on disks that store logs. 



A lot of metrics can be checked via Dev Tools in OpenSearch:

1. Logs may not be saved due to the high disk space usage:

- below command will show the disk space usage in logging system

Disk space retention policy is 75%, all disks have 100Gb (one disk per elastic-data instance). In the above case the disk space usage is very high on all disks the 75% of disk usage is exceeded. On few disks the space usage increased over 90% which resulted in logs not being saved anymore. 

2. Logs may not be visible due to the fact that some indexes are in yellow or red state.

The problem may be related to retention or a corrupted indexes.

• SAP Commerce Cloud
• OpenSearch 

kibana, logging system, logs, disappeared, not visible , KBA , CEC-SCC-CLA-ENV-LOM , Logging and Monitoring , Problem