20200914

The first time in a heck of a long time Elasticsearch was on it's knees. No obvious reason.

Issue

??@sulcorebutia:/../w$ sudo service elasticsearch status
[sudo] password for wiki: 
● elasticsearch.service - Elasticsearch
   Loaded: loaded (/usr/lib/systemd/system/elasticsearch.service; enabled; vendor preset: enabled)
   Active: failed (Result: signal) since Mon 2020-09-14 04:26:55 CEST; 5h 58min ago
     Docs: http://www.elastic.co
  Process: 1236 ExecStart=/usr/share/elasticsearch/bin/elasticsearch -p ${PID_DIR}/elasticsearch.pid --quiet (code=killed, signal=KILL)
 Main PID: 1236 (code=killed, signal=KILL)

Jul 22 22:54:43 sulcorebutia systemd[1]: Started Elasticsearch.
Sep 14 04:26:55 sulcorebutia systemd[1]: elasticsearch.service: Main process exited, code=killed, status=9/KILL
Sep 14 04:26:55 sulcorebutia systemd[1]: elasticsearch.service: Failed with result 'signal'.

Mitigation

??@sulcorebutia:/../w$ sudo service elasticsearch start
??@sulcorebutia:/..w/w$ sudo service elasticsearch status
● elasticsearch.service - Elasticsearch
   Loaded: loaded (/usr/lib/systemd/system/elasticsearch.service; enabled; vendor preset: enabled)
   Active: active (running) since Mon 2020-09-14 10:26:05 CEST; 3s ago
     Docs: http://www.elastic.co
 Main PID: 3744 (java)
    Tasks: 6 (limit: 4915)
   CGroup: /system.slice/elasticsearch.service
           └─3744 /usr/bin/java -Xms3g -Xmx3g -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:+AlwaysPreTou

Sep 14 10:26:05 sulcorebutia systemd[1]: Started Elasticsearch.