OPC Server Connection Redundancy Settings

Ignition
1

I have a local instance of Ignition and Kepware running on my machine (Windows 10) and an instance of Kepware on another machine (Windows 10). I am able to create connections in Ignition to both KepServer instances and get good quality tags. I setup my local instance as the failover endpoint as follows:

When I stop the Kepware service on the remote machine it never fails over to my local.

I get two different errors on the status page:
1)UaException: status=Bad_ConfigurationError, message=no matching endpoints found
at com.inductiveautomation.xopc2.client.ClientManager.lambda$null$5(ClientManager.java:162)
at java.util.Optional.orElseThrow(Optional.java:290)
at com.inductiveautomation.xopc2.client.ClientManager.lambda$connect$9(ClientManager.java:161)
at java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760)
at java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736)
at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
at java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962)
at org.eclipse.milo.opcua.stack.client.UaTcpStackClient.lambda$receiveResponse$14(UaTcpStackClient.java:343)
at org.eclipse.milo.opcua.stack.core.util.ExecutionQueue$PollAndExecute.run(ExecutionQueue.java:107)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
7.9.8 (b2018060714)
Oracle Corporation 1.8.0_161

and

2)UaException: status=Bad_ConnectionRejected, message=java.net.ConnectException: Connection refused: no further information: /192.168.10.164:49320
at org.eclipse.milo.opcua.stack.client.UaTcpStackClient.lambda$bootstrap$15(UaTcpStackClient.java:510)
at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:683)
at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:604)
at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:564)
at io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:425)
at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.fulfillConnectPromise(AbstractNioChannel.java:276)
at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:292)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:545)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:485)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:399)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:371)
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:112)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.ConnectException: Connection refused: no further information: /192.168.10.164:49320
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:224)
at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:289)
… 6 more
7.9.8 (b2018060714)
Oracle Corporation 1.8.0_161

192.168.10.164 is the remote machine.

I am not sure if I am setting this up properly or not. I would like for Ignition to switch OPC UA servers after 1 - 5 failed attempts at connecting to the remote.

Any help would be greatly appreciated!

2

It looks like the Kepserver instance on the remote machine isn’t accepting incoming traffic on the localhost adapter. Try either A: enabling that network interface in the kepware settings on the remote machine, or B: changing ‘localhost’ in the failover settings to the actual network IP of the remote machine.

3

image.png1065×271 12.2 KB

I changed the localhost to the ip and I still get the same results.
I created the “Local” connection just to prove to myself that I could connect to my local Kepware instance. The “Remote” connection is the one with the Redundancy Settings and with the remote Kepware instance stopped I still get a faulted status even with local as the failover.

Also, I turned off the firewall on both machines just to rule that out.

Thanks

4

We changed the Redundancy Settings to include the Backup Endpoint URL and the failover started working as expected.