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parse_exception reason: Failed to derive xcontent

When inserting json to an elasticsearch index, this is a common error. It’s often the result of a simple error in the formatting. When inserting the following code for a demo, I came acrosss the error: POST /domaindb_index/domain/_bulk { “index”: { “_id”: 1 }} { “title”: “google.com”, “ip”: [“216.58.193.78”], “description” : “Words most popular search […]

high disk watermark exceeded on one or more nodes – elasticsearch

When starting elasticsearch many┬ápeople are getting the following error message “high disk watermark exceeded on one or more nodes”.   This is a message from elasticsearch, which by default comes up when the drive containing your elasticsearch index is more than 90% full. It’s not related to the size of the elasticsearch index, just the […]

21 handy elasticsearch queries

Elasticsearch is a powerful, fast and surprisingly user freindly data store and search tool. It’s not quite a database and it’s not quite a search engine, elasticsearch sits somewhere comfortably in between. For these examples, we’ll store some domain names, Ip addresses and related information as that is a lot more fun than traditional bookstore […]