Elasticsearch or OpenSearch

Cases, by severity

1. IL-0042 Application logs stopped reaching Elasticsearch and OpenSearch for hours and were lost when OpenSearch ran out of disk spaceUK Ministry of Justice · 2024

   Root cause Capacity exhaustion

2. IL-0197 Moving a three-node Elasticsearch StatefulSet to new persistent volumes split the cluster in two, because the Helm chart hardcoded cluster.initial_master_nodes to elasticsearch-0Palark · 2021

   Root cause Operator error

3. IL-0041 fluent-bit silently stopped shipping application logs from one node to ElasticsearchPrometheusKube · 2020

   Root cause Software defect