[Bug] Skywalking local setup unable to configure for multiple services

[MenusGarg5981]

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Apache SkyWalking Component

OAP server (apache/skywalking)

What happened

Hello everyone, I was trying to configure skywalking locally for multiple services(2) using a java agent. In the agent.config, file I mentioned the backend service address to 127.0.0.1:11800 for both the services and OAP running at 12800, both were spring boot applications one pointed at 8080 and the other at 8082 while the skywalking server was pointed at 8081.
Logs showed up that:

Caused by: org.apache.skywalking.apm.dependencies.io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: /127.0.0.1:11800
Caused by: java.net.ConnectException: Connection refused
	at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:716)
	at org.apache.skywalking.apm.dependencies.io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:330)
	at org.apache.skywalking.apm.dependencies.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:334)
	at org.apache.skywalking.apm.dependencies.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:702)
	at org.apache.skywalking.apm.dependencies.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:650)
	at org.apache.skywalking.apm.dependencies.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:576)
	at org.apache.skywalking.apm.dependencies.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
	at org.apache.skywalking.apm.dependencies.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
	at org.apache.skywalking.apm.dependencies.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at org.apache.skywalking.apm.dependencies.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.lang.Thread.run(Thread.java:748)

How should I configure it for both the services to show up on the same UI?

What you expected to happen

Both the services are trying to send the metrics at the same gRPC port so maybe this is the reason.

How to reproduce

Trying to configure multiple services using this documentation: https://skywalking.apache.org/docs/main/v8.4.0/en/setup/service-agent/java-agent/readme/

Anything else

No response

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

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