4 November 2019
On November 4th, 2019 SEDNA experienced a degradation of the platform that made users unable to search within SEDNA or log in. This affected users on our privately hosted cluster meaning users who login via a custom URL such as sedna.sednanetwork.com.
A mechanism designed to monitor the health of SEDNA’s search infrastructure identified a potential problem with ElasticSearch - the database SEDNA uses to index messages. An automated response to that potential fault was activated which had the unintended consequence of degrading SEDNA’s performance.
Actions and opportunities for improvement
An investigation revealed that the health monitoring system activated unnecessarily and measures have been taken to ensure that it only responds to genuine problems with the search service’s health.