how start elasticsearch with debug / verbose
Outdated question, but probably, can be helpful for someone else.
./elasticsearch -Des.logger.level=DEBUG
Thanks :)
In the more recent version of ES, i.e. 7.x the option is
-v for verbose
bin/elasticsearch -v
There's a log4j2.properties file, typically in the config directory (along with elasticsearch.yml). There, you have full control over logging. You can set everything to DEBUG via:
rootLogger.level = debugThough if I want more verbose logging for a specific chunk of code, I usually use the Cluster Update Settings API. Something like:
curl -XPUT -H 'Content-Type: application/json' localhost:9200/_cluster/settings -d '{ "transient": { "logger.org.xbib.elasticsearch.jdbc.strategy": "trace" }}'Though the JDBC importer hasn't been updated for a while now.