Improved Prometheus-based ElasticSearch monitoring

It has come to our attention that in certain cases our Prometheus-based ElasticSearch monitoring wasn’t correctly detecting issues and sending alerts.

This problem would arise when deployed through Helm with a long release name. Kubernetes object names are usually limited to 63 characters, which we didn’t take into account in our Alert selectors. This has now been fixed in our monitoring chart.

The fix has been rolled out to all setups with ElasticSearch.