Connection Error in Ignite web agent - gridgain

Question

For analysis of node in Apache ignite, I am using monitoring tool at [1] : https://console.gridgain.com/. I tried running ignite-web-agent.sh for making connection with web server at link above, but I am getting following error messege. I also tried replacing localhost with IP address of machine, but still it is not working. While running ignite node do I have to start ignite REST server for connection? If yes then how can I enable this REST server mode through java code?
ignite-web-agent-1.7.2]$ . ignite-web-agent.sh
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0
[12:58:13,881][INFO ][main][AgentLauncher] Starting Apache Ignite Web Console Agent...
Agent configuration:
User's security tokens : ****************Fq3q
URI to Ignite node REST server: http://localhost:8080
URI to Ignite Console server : https://console.gridgain.com:3002
Path to agent property file : default.properties
Path to JDBC drivers folder : /home/rishikesh/ignite-web-agent-1.7.2/jdbc-drivers
[12:58:14,318][INFO ][EventThread][AgentLauncher] Connecting to: https://console.gridgain.com:3002
[12:58:34,314][ERROR][EventThread][AgentLauncher] Connection error.
io.socket.client.SocketIOException: timeout
at io.socket.client.Manager$1$4$1.run(Manager.java:312)
at io.socket.thread.EventThread$2.run(EventThread.java:75)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
[12:58:37,304][INFO ][EventThread][AgentLauncher] Connecting to: https://console.gridgain.com:3002
[12:58:53,744][ERROR][EventThread][AgentLauncher] Connection error.
io.socket.engineio.client.EngineIOException: xhr poll error
at io.socket.engineio.client.Transport.onError(Transport.java:64)
at io.socket.engineio.client.transports.PollingXHR.access$100(PollingXHR.java:18)
at io.socket.engineio.client.transports.PollingXHR$6$1.run(PollingXHR.java:126)
at io.socket.thread.EventThread$2.run(EventThread.java:75)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.UnknownHostException: console.gridgain.com
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:422)
at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1890)
at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1885)
at java.security.AccessController.doPrivileged(Native Method)
at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1884)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1457)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1441)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:338)
at io.socket.engineio.client.transports.PollingXHR$Request$1.run(PollingXHR.java:214)
... 1 more

Answer 1

Web agent can't resolve console.gridgain.com
try to change 'URI to Ignite Console server' in /home/rishikesh/ignite-web-agent-1.7.2/default.properties please replace:
server-uri=https://console.gridgain.com:3002
to:
server-uri=https://104.197.2.239:3002
To enable REST module move ignite-rest-http folder from lib/optional/ to lib/ in binary distribution or add following dependence to your maven project:
<dependency>
<groupId>org.apache.ignite</groupId>
<artifactId>ignite-rest-http/artifactId>
<version>${ignite.version}</version>
</dependency>