I create two dashboards and add some objects including Visualize objects and Search objects.
The two dashboards are working fine until yesterday without changing any configurations.
One is for web log which is sent by filebeat through logstash json codec and saved into elasticsearch.
The other one is for system log which is sent by metricbeat and directly saved into elasticsearch.
Now, the two dashboards can't display any object and show unknown error.
I check these objects in Visualize and Discover page, they are all working fine.
The weird thing is, when I delete all objects in a dashboard and add those objects again, some objects can show up, it also get the "Courier Fetch: Cannot read property 'resolve' of null" error message sometimes.
I didn't see any related error in elasticsearch log. (There are some parsing error about logstash save messages into elasticsearch, but I think that is not relevant.)
I'm not sure what the problem is, maybe it's caused by bad performance on single node (4 core, 30GB mem, 12GB mem for elasticsearch) on AWS EC2.
Any advice? Or what else information I should provide?
Thank you very much!
cluster.name: testelk node.name: testelk path.data: /home/bigdata/elk/elasticsearch/data path.logs: /home/bigdata/elk/elasticsearch/logs bootstrap.memory_lock: true network.host: 0.0.0.0 http.port: 9200 discovery.zen.ping.unicast.hosts: ["127.0.0.1"] discovery.zen.minimum_master_nodes: 1 action.auto_create_index: .security,.monitoring*,.watches,.triggered_watches,.watcher-history*,filebeat*,logstash*,og_log*,metricbeat*
server.port: 5601 server.host: "xxx.xx.x.xx" server.name: "testelk" elasticsearch.url: "http://localhost:9200"