CODEWITHSUNDEEP
amazon-ec2cassandracassandra-3.0backpressure
Chakri Stark
Chakri Stark

Reputation: 176

how to run the EC2 snitch configuration in cassandra

I am trying to accomplish a single cassandra node start up in Ec2 snitch configuration.

The yaml properties I have changed for this configuration is:

seeds : 'ip-address of machine'
listen: 'ip_address of machine'
rpc_address:'ip_address of machine'
snitch : Ec2Snitch

All other thrift, rpc_broadcast, broadcast are all commented and are not enabled.

I am getting this error when I am trying to start the connection

INFO [main] 2017-12-04 16:54:15,021 RateBasedBackPressure.java:123 - Initialized back-pressure with high ratio: 0.9, factor: 5, flow: FAST, window size: 2000. INFO [main] 2017-12-04 16:54:15,022 DatabaseDescriptor.java:725 - Back-pressure is disabled with strategy org.apache.cassandra.net.RateBasedBackPressure{high_ratio=0.9, factor=5, flow=FAST}. Exception (org.apache.cassandra.exceptions.ConfigurationException) encountered during startup: Error instantiating snitch class 'org.apache.cassandra.locator.Ec2Snitch'. org.apache.cassandra.exceptions.ConfigurationException: Error instantiating snitch class 'org.apache.cassandra.locator.Ec2Snitch'. at org.apache.cassandra.utils.FBUtilities.construct(FBUtilities.java:543) at org.apache.cassandra.utils.FBUtilities.construct(FBUtilities.java:521) at org.apache.cassandra.config.DatabaseDescriptor.createEndpointSnitch(DatabaseDescriptor.java:1035) at org.apache.cassandra.config.DatabaseDescriptor.applySnitch(DatabaseDescriptor.java:959) at org.apache.cassandra.config.DatabaseDescriptor.applyAll(DatabaseDescriptor.java:318) at org.apache.cassandra.config.DatabaseDescriptor.daemonInitialization(DatabaseDescriptor.java:142) at org.apache.cassandra.service.CassandraDaemon.applyConfig(CassandraDaemon.java:645) at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:580) at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:689) Caused by: java.net.NoRouteToHostException: No route to host (Host unreachable) at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:589) at java.net.Socket.connect(Socket.java:538) at sun.net.NetworkClient.doConnect(NetworkClient.java:180) at sun.net.www.http.HttpClient.openServer(HttpClient.java:463) at sun.net.www.http.HttpClient.openServer(HttpClient.java:558) at sun.net.www.http.HttpClient.(HttpClient.java:242) at sun.net.www.http.HttpClient.New(HttpClient.java:339) at sun.net.www.http.HttpClient.New(HttpClient.java:357) at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1220) at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1156) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1050) at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:984) at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1564) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492) at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480) at org.apache.cassandra.locator.Ec2Snitch.awsApiCall(Ec2Snitch.java:78) at org.apache.cassandra.locator.Ec2Snitch.(Ec2Snitch.java:55) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at java.lang.Class.newInstance(Class.java:442) at org.apache.cassandra.utils.FBUtilities.construct(FBUtilities.java:528) ... 8 more ERROR [main] 2017-12-04 16:54:18,308 CassandraDaemon.java:706 - Exception encountered during startup org.apache.cassandra.exceptions.ConfigurationException: Error instantiating snitch class 'org.apache.cassandra.locator.Ec2Snitch'. at org.apache.cassandra.utils.FBUtilities.construct(FBUtilities.java:543) ~[apache-cassandra-3.11.1.jar:3.11.1] at org.apache.cassandra.utils.FBUtilities.construct(FBUtilities.java:521) ~[apache-cassandra-3.11.1.jar:3.11.1] at org.apache.cassandra.config.DatabaseDescriptor.createEndpointSnitch(DatabaseDescriptor.java:1035) ~[apache-cassandra-3.11.1.jar:3.11.1] at org.apache.cassandra.config.DatabaseDescriptor.applySnitch(DatabaseDescriptor.java:959) ~[apache-cassandra-3.11.1.jar:3.11.1] at org.apache.cassandra.config.DatabaseDescriptor.applyAll(DatabaseDescriptor.java:318) ~[apache-cassandra-3.11.1.jar:3.11.1] at org.apache.cassandra.config.DatabaseDescriptor.daemonInitialization(DatabaseDescriptor.java:142) ~[apache-cassandra-3.11.1.jar:3.11.1] at org.apache.cassandra.service.CassandraDaemon.applyConfig(CassandraDaemon.java:645) [apache-cassandra-3.11.1.jar:3.11.1] at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:580) [apache-cassandra-3.11.1.jar:3.11.1] at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:689) [apache-cassandra-3.11.1.jar:3.11.1] Caused by: java.net.NoRouteToHostException: No route to host (Host unreachable) at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.8.0_151] at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_151] at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_151] at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_151] at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_151] at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_151] at java.net.Socket.connect(Socket.java:538) ~[na:1.8.0_151] at sun.net.NetworkClient.doConnect(NetworkClient.java:180) ~[na:1.8.0_151] at sun.net.www.http.HttpClient.openServer(HttpClient.java:463) ~[na:1.8.0_151] at sun.net.www.http.HttpClient.openServer(HttpClient.java:558) ~[na:1.8.0_151] at sun.net.www.http.HttpClient.(HttpClient.java:242) ~[na:1.8.0_151] at sun.net.www.http.HttpClient.New(HttpClient.java:339) ~[na:1.8.0_151] at sun.net.www.http.HttpClient.New(HttpClient.java:357) ~[na:1.8.0_151] at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1220) ~[na:1.8.0_151] at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1156) ~[na:1.8.0_151] at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1050) ~[na:1.8.0_151] at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:984) ~[na:1.8.0_151] at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1564) ~[na:1.8.0_151] at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492) ~[na:1.8.0_151] at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480) ~[na:1.8.0_151] at org.apache.cassandra.locator.Ec2Snitch.awsApiCall(Ec2Snitch.java:78) ~[apache-cassandra-3.11.1.jar:3.11.1] at org.apache.cassandra.locator.Ec2Snitch.(Ec2Snitch.java:55) ~[apache-cassandra-3.11.1.jar:3.11.1] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_151] at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_151] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_151] at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_151] at java.lang.Class.newInstance(Class.java:442) ~[na:1.8.0_151] at org.apache.cassandra.utils.FBUtilities.construct(FBUtilities.java:528) ~[apache-cassandra-3.11.1.jar:3.11.1] ... 8 common frames omitted

I was unable to figure out the initial cause of error. I already checked initialising any properties in rack-dc and topology-properties file. But I didn't find anything worth to cause this issue. The node is not even initialising the initial schema also. Can anyone please help me to overcome this issue? If possible, help me in giving instructions setting up a multi node setup also in Ec2 snitch configuration. I have tried all the possible ways to establish the single node with Ec2 configuration. So, I thought to post it in SO and let the big brains help me in solving the issue.

Thanks in advance.

Upvotes: 2

Views: 845

Answers (1)

TomerSan
TomerSan

Reputation: 1578

This should work for you (I tested it) - check for typos, or missing chars / spaces in your yaml file.

  • cluster_name: 'tomer-test-cluster'
  • seeds: "[internal_ip]"
  • listen_address: [internal_ip]
  • native_transport_port: 9042
  • endpoint_snitch: Ec2Snitch
  • rpc_address: 0.0.0.0
  • rpc_port: 9160
  • broadcast_rpc_address: [internal_ip]

Upvotes: 1

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