Elasticsearch troubleshooting

• curl http://localhost:9200/_cluster/health?pretty -k -u'admin:adminpass'
• curl -k "https://localhost:9200/_cat/indices?v&health=yellow" -u'XXX:UUU'
• curl -k "https://localhost:9200/_cat/indices?v&health=red" -u'XXX:UUU'

Messages

• Java.io.IOException: failed to obtain in-memory shard lock
• Low disk watermark
• Cluster health status changed from [YELLOW] to [GREEN]
• No search context found for id
• No space left on device

Related

/_cluster/settings
GET /_cluster/allocation/explain
green, yellow, red
WARN, INFO, DEBUG
elasticsearch.yml
uuid
systemctl restart elasticsearch && systemctl status elasticsearch && tail -f /var/log/elasticsearch/elasticsearch.log
Elasticsearch logs

See also

• Elasticsearch troubleshooting, Elasticsearch logs, yellow, Low disk watermark, in-memory shard lock, re-running
• Elasticsearch: /_cat/, /_nodes/, /_cluster/, /_snapshot/, /_ilm/, /_xpack/, /_search/, /_security/, /my-index/, /_bulk