Hi,
Just now, our Logstash stopped receiving and emitting events, the cause was a cluster_block_exception on our Elasticsearch cluster
{"level":"INFO","loggerName":"logstash.outputs.elasticsearch","timeMillis":1574946278529,"thread":"[main]>worker0","logEvent":{"message":"retrying failed action with response code: 403 ({\"type\"=>\"cluster_block_exception\", \"reason\"=>\"blocked by: [FORBIDDEN/8/index write (api)];\"})"}}
I'm aware that such blocks are placed by Elasticsearch itself when it reach certain conditions (like the watermark setting or the jvm heap usage %).
I searched around the docs but found nothing, so I ask here, Is there a list of causes for cluster blocks?, Where can we look to check why the block was applied?
I'm on 7.0.1