StormCrawler cannot connect to ElasticSearch

Question

While running the command:

storm jar target/crawlIndexer-1.0-SNAPSHOT.jar  org.apache.storm.flux.Flux --local es-injector.flux --sleep 86400000

I get an error saying:

8710 [Thread-26-status-executor[4 4]] ERROR c.d.s.e.p.StatusUpdaterBolt - 
Can't connect to ElasticSearch

When running http://localhost:9200/ in browser ES successfully loads up. Kibana also connects to ES. So it must just be the connection from StromCrawler to ElasticSearch.

What could be the issue?

Snippet of full error:

8710 [Thread-26-status-executor[4 4]] ERROR c.d.s.e.p.StatusUpdaterBolt - Can't connect to ElasticSearch
java.lang.RuntimeException: java.net.UnknownHostException: http: nodename nor servname provided, or not known
        at com.digitalpebble.stormcrawler.elasticsearch.ElasticSearchConnection.getClient(ElasticSearchConnection.java:107) ~[crawlIndexer-1.0-SNAPSHOT.jar:?]
        at com.digitalpebble.stormcrawler.elasticsearch.ElasticSearchConnection.getConnection(ElasticSearchConnection.java:151) ~[crawlIndexer-1.0-SNAPSHOT.jar:?]
        at com.digitalpebble.stormcrawler.elasticsearch.persistence.StatusUpdaterBolt.prepare(StatusUpdaterBolt.java:141) [crawlIndexer-1.0-SNAPSHOT.jar:?]
        at org.apache.storm.daemon.executor$fn__5044$fn__5057.invoke(executor.clj:791) [storm-core-1.1.0.jar:1.1.0]
        at org.apache.storm.util$async_loop$fn__557.invoke(util.clj:482) [storm-core-1.1.0.jar:1.1.0]
        at clojure.lang.AFn.run(AFn.java:22) [clojure-1.7.0.jar:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]
Caused by: java.net.UnknownHostException: http: nodename nor servname provided, or not known
        at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method) ~[?:1.8.0_151]
        at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928) ~[?:1.8.0_151]
        at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323) ~[?:1.8.0_151]
        at java.net.InetAddress.getAllByName0(InetAddress.java:1276) ~[?:1.8.0_151]
        at java.net.InetAddress.getAllByName(InetAddress.java:1192) ~[?:1.8.0_151]
        at java.net.InetAddress.getAllByName(InetAddress.java:1126) ~[?:1.8.0_151]
        at java.net.InetAddress.getByName(InetAddress.java:1076) ~[?:1.8.0_151]
        at com.digitalpebble.stormcrawler.elasticsearch.ElasticSearchConnection.getClient(ElasticSearchConnection.java:104) ~[crawlIndexer-1.0-SNAPSHOT.jar:?]
        ... 6 more
8710 [Thread-18-__metricscom.digitalpebble.stormcrawler.elasticsearch.metrics.MetricsConsumer-executor[2 2]] ERROR c.d.s.e.m.MetricsConsumer - Can't connect to ElasticSearch
java.lang.RuntimeException: java.net.UnknownHostException: http
        at com.digitalpebble.stormcrawler.elasticsearch.ElasticSearchConnection.getClient(ElasticSearchConnection.java:107) ~[crawlIndexer-1.0-SNAPSHOT.jar:?]
        at com.digitalpebble.stormcrawler.elasticsearch.ElasticSearchConnection.getConnection(ElasticSearchConnection.java:151) ~[crawlIndexer-1.0-SNAPSHOT.jar:?]
        at com.digitalpebble.stormcrawler.elasticsearch.ElasticSearchConnection.getConnection(ElasticSearchConnection.java:133) ~[crawlIndexer-1.0-SNAPSHOT.jar:?]
        at com.digitalpebble.stormcrawler.elasticsearch.metrics.MetricsConsumer.prepare(MetricsConsumer.java:68) [crawlIndexer-1.0-SNAPSHOT.jar:?]
        at org.apache.storm.metric.MetricsConsumerBolt.prepare(MetricsConsumerBolt.java:77) [storm-core-1.1.0.jar:1.1.0]
        at org.apache.storm.daemon.executor$fn__5044$fn__5057.invoke(executor.clj:791) [storm-core-1.1.0.jar:1.1.0]
        at org.apache.storm.util$async_loop$fn__557.invoke(util.clj:482) [storm-core-1.1.0.jar:1.1.0]
        at clojure.lang.AFn.run(AFn.java:22) [clojure-1.7.0.jar:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]
Caused by: java.net.UnknownHostException: http
        at java.net.InetAddress.getAllByName0(InetAddress.java:1280) ~[?:1.8.0_151]
        at java.net.InetAddress.getAllByName(InetAddress.java:1192) ~[?:1.8.0_151]
        at java.net.InetAddress.getAllByName(InetAddress.java:1126) ~[?:1.8.0_151]
        at java.net.InetAddress.getByName(InetAddress.java:1076) ~[?:1.8.0_151]
        at com.digitalpebble.stormcrawler.elasticsearch.ElasticSearchConnection.getClient(ElasticSearchConnection.java:104) ~[crawlIndexer-1.0-SNAPSHOT.jar:?]
        ... 8 more
8714 [Thread-26-status-executor[4 4]] ERROR o.a.s.util - Async loop died!
java.lang.RuntimeException: java.lang.RuntimeException: java.net.UnknownHostException: http: nodename nor servname provided, or not known
        at com.digitalpebble.stormcrawler.elasticsearch.persistence.StatusUpdaterBolt.prepare(StatusUpdaterBolt.java:145) ~[crawlIndexer-1.0-SNAPSHOT.jar:?]
        at org.apache.storm.daemon.executor$fn__5044$fn__5057.invoke(executor.clj:791) ~[storm-core-1.1.0.jar:1.1.0]

Perhaps there is something I need to modify in elasticsearch.yml or es-conf.yml? (They both have default settings)

Answer 1

Got the application to work by playing around (for many hours).

Steps:

• Reverted back Storm-Crawler-Core and Storm-Crawler-Elastic-Search to version 1.5 in the maven file.
• Used the 1.5 flux/yaml config file versions from Storm-Crawler-Elastic-Search
• Using Elastic Search 5.4.0
• Using Kibana 5.4.0

Answer 2

Your error message above mentions ElasticSearchConnection.java:104 so you must be using a release and not the code from the master branch. Make sure the es conf corresponds to the same version . Did you copy the conf from the master branch? The next release will have a different format for the addresses