Sonar Server Startup error

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Am trying to set Sonarqube 7.9.1 on ubuntu machine, but its failing to start with below error on sonar.log -

app[][o.e.c.t.TransportClientNodesService] failed to connect to node [{#transport#-1}{dZdM-0jhQSi4KwMEWLd0ag}{127.0.0.1}{127.0.0.1:9001}], ignoring...
org.elasticsearch.transport.ConnectTransportException: [][127.0.0.1:9001] connect_exception
	at org.elasticsearch.transport.TcpTransport$ChannelsConnectedListener.onFailure(TcpTransport.java:1309)
	at org.elasticsearch.action.ActionListener.lambda$toBiConsumer$2(ActionListener.java:100)
	at org.elasticsearch.common.concurrent.CompletableContext.lambda$addListener$0(CompletableContext.java:42)
	at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:859)
	at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:837)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506)
	at java.base/java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:2088)
	at org.elasticsearch.common.concurrent.CompletableContext.completeExceptionally(CompletableContext.java:57)
	at org.elasticsearch.transport.netty4.Netty4TcpChannel.lambda$new$1(Netty4TcpChannel.java:72)
	at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:511)
	at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:504)
	at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:483)
	at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:424)
	at io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:121)
	at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.fulfillConnectPromise(AbstractNioChannel.java:327)
	at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:343)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:644)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:591)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:508)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:470)

Hi,

Welcome to the community!

Are there any other errors in that log? Any errors in the other server logs?

 
Ann