Unknown host exception in Snowplow open source Quick Start

Hi, I’ve installed the snowplow open source quick start version on AWS and the test event sent to it stop in the enrich server, with an unknown host exception.

This is the error log:

Caused by: java.net.UnknownHostException: ip-10-10-3-119.us-west-2.compute.internal: Name or service not known
	at java.base/java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
	at java.base/java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:929)
	at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1515)
	at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:848)
	at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1505)
	at java.base/java.net.InetAddress.getLocalHost(InetAddress.java:1637)
	... 3 more
[main] INFO nl.basjes.parse.useragent.AbstractUserAgentAnalyzerDirect - - Loaded 69 files in 1575 msec using expression: classpath*:UserAgents/**/*.yaml
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - 
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - /-----------------------------------------------------------\
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - | Yauaa 5.23 (v5.23 @ 2021-03-05T11:05:38Z)                 |
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - +-----------------------------------------------------------+
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - | For more information: https://yauaa.basjes.nl             |
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - | Copyright (C) 2013-2021 Niels Basjes - License Apache 2.0 |
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - \-----------------------------------------------------------/
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - 
[main] INFO nl.basjes.parse.useragent.AbstractUserAgentAnalyzerDirect - Building all matchers for all possible fields.
Exception in thread "main" java.net.UnknownHostException: ip-10-10-3-119.us-west-2.compute.internal: ip-10-10-3-119.us-west-2.compute.internal: Name or service not known
	at java.base/java.net.InetAddress.getLocalHost(InetAddress.java:1642)
	at com.snowplowanalytics.snowplow.enrich.stream.sources.KinesisSource.run(KinesisSource.scala:147)
	at com.snowplowanalytics.snowplow.enrich.stream.KinesisEnrich$.main(KinesisEnrich.scala:97)
	at com.snowplowanalytics.snowplow.enrich.stream.KinesisEnrich.main(KinesisEnrich.scala)
Caused by: java.net.UnknownHostException: ip-10-10-3-119.us-west-2.compute.internal: Name or service not known
	at java.base/java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
	at java.base/java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:929)
	at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1515)
	at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:848)
	at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1505)
	at java.base/java.net.InetAddress.getLocalHost(InetAddress.java:1637)
	... 3 more
[main] INFO nl.basjes.parse.useragent.AbstractUserAgentAnalyzerDirect - - Loaded 69 files in 1430 msec using expression: classpath*:UserAgents/**/*.yaml
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - 
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - /-----------------------------------------------------------\
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - | Yauaa 5.23 (v5.23 @ 2021-03-05T11:05:38Z)                 |
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - +-----------------------------------------------------------+
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - | For more information: https://yauaa.basjes.nl             |
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - | Copyright (C) 2013-2021 Niels Basjes - License Apache 2.0 |
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - \-----------------------------------------------------------/
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - 
[main] INFO nl.basjes.parse.useragent.AbstractUserAgentAnalyzerDirect - Building all matchers for all possible fields.
Exception in thread "main" java.net.UnknownHostException: ip-10-10-3-119.us-west-2.compute.internal: ip-10-10-3-119.us-west-2.compute.internal: Name or service not known
	at java.base/java.net.InetAddress.getLocalHost(InetAddress.java:1642)
	at com.snowplowanalytics.snowplow.enrich.stream.sources.KinesisSource.run(KinesisSource.scala:147)
	at com.snowplowanalytics.snowplow.enrich.stream.KinesisEnrich$.main(KinesisEnrich.scala:97)
	at com.snowplowanalytics.snowplow.enrich.stream.KinesisEnrich.main(KinesisEnrich.scala)
Caused by: java.net.UnknownHostException: ip-10-10-3-119.us-west-2.compute.internal: Name or service not known
	at java.base/java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
	at java.base/java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:929)
	at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1515)
	at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:848)
	at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1505)
	at java.base/java.net.InetAddress.getLocalHost(InetAddress.java:1637)
	... 3 more
[main] INFO nl.basjes.parse.useragent.AbstractUserAgentAnalyzerDirect - - Loaded 69 files in 1413 msec using expression: classpath*:UserAgents/**/*.yaml
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - 
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - /-----------------------------------------------------------\
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - | Yauaa 5.23 (v5.23 @ 2021-03-05T11:05:38Z)                 |
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - +-----------------------------------------------------------+
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - | For more information: https://yauaa.basjes.nl             |
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - | Copyright (C) 2013-2021 Niels Basjes - License Apache 2.0 |
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - \-----------------------------------------------------------/
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - 
[main] INFO nl.basjes.parse.useragent.AbstractUserAgentAnalyzerDirect - Building all matchers for all possible fields.
Exception in thread "main" java.net.UnknownHostException: ip-10-10-3-119.us-west-2.compute.internal: ip-10-10-3-119.us-west-2.compute.internal: Name or service not known
	at java.base/java.net.InetAddress.getLocalHost(InetAddress.java:1642)
	at com.snowplowanalytics.snowplow.enrich.stream.sources.KinesisSource.run(KinesisSource.scala:147)
	at com.snowplowanalytics.snowplow.enrich.stream.KinesisEnrich$.main(KinesisEnrich.scala:97)
	at com.snowplowanalytics.snowplow.enrich.stream.KinesisEnrich.main(KinesisEnrich.scala)
Caused by: java.net.UnknownHostException: ip-10-10-3-119.us-west-2.compute.internal: Name or service not known
	at java.base/java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
	at java.base/java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:929)
	at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1515)
	at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:848)
	at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1505)
	at java.base/java.net.InetAddress.getLocalHost(InetAddress.java:1637)
	... 3 more
[main] INFO nl.basjes.parse.useragent.AbstractUserAgentAnalyzerDirect - - Loaded 69 files in 1275 msec using expression: classpath*:UserAgents/**/*.yaml
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - 
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - /-----------------------------------------------------------\
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - | Yauaa 5.23 (v5.23 @ 2021-03-05T11:05:38Z)                 |
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - +-----------------------------------------------------------+
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - | For more information: https://yauaa.basjes.nl             |
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - | Copyright (C) 2013-2021 Niels Basjes - License Apache 2.0 |
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - \-----------------------------------------------------------/
[main] INFO nl.basjes.parse.useragent.utils.YauaaVersion - 
[main] INFO nl.basjes.parse.useragent.AbstractUserAgentAnalyzerDirect - Building all matchers for all possible fields.
Exception in thread "main" java.net.UnknownHostException: ip-10-10-3-119.us-west-2.compute.internal: ip-10-10-3-119.us-west-2.compute.internal: Name or service not known
	at java.base/java.net.InetAddress.getLocalHost(InetAddress.java:1642)
	at com.snowplowanalytics.snowplow.enrich.stream.sources.KinesisSource.run(KinesisSource.scala:147)
	at com.snowplowanalytics.snowplow.enrich.stream.KinesisEnrich$.main(KinesisEnrich.scala:97)
	at com.snowplowanalytics.snowplow.enrich.stream.KinesisEnrich.main(KinesisEnrich.scala)
Caused by: java.net.UnknownHostException: ip-10-10-3-119.us-west-2.compute.internal: Name or service not known
	at java.base/java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
	at java.base/java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:929)
	at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1515)
	at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:848)
	at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1505)
	at java.base/java.net.InetAddress.getLocalHost(InetAddress.java:1637)

Any help for this problem?

Hey @Alessandro_Arpetti,

There was an AWS outage yesterday. I suspect error you got might be related with that. Could you try to deploy it again, please ? Let us know if you encounter same error.

Hi @enes_aldemir, thank you for your reply.

I tested several times, and today too, but the problem persists.

It maybe could be a network problem? I’ve implemented a VPC with two privates and two public subnets, a NAT and an internet gateway and I’ve configured the variable in terraform like that:

### VPC MODULE VARIABLES

vpc_cidr             = "10.10.0.0/16"
public_subnets_cidr  = ["10.10.0.0/24", "10.10.1.0/24"]
private_subnets_cidr = ["10.10.3.0/24", "10.10.4.0/24"]

Hi @Alessandro_Arpetti - would recommend SSHing into one of the nodes you have setup and checking for internet connectivity.