We have setup a redundant and after switchover it keeps giving us this error. A watchdog tag is running in ignition which is updating too fast.
This is on the backup side.
Error executing task 'syncRequest'.
com.inductiveautomation.metro.api.ex.LocalException: IOException thrown, error was NPSCAFRCHWS01.novoprod.local, header=[opCode=MSG_SEND, subCode=0, flags=0, messageId=12501, senderId='ignition-npscafrchws01-c02-0-backup', targetAddress='_0:1:Ignition-npscafrchws01-c02-0']
at com.inductiveautomation.metro.impl.protocol.websocket.WebSocketConnection$RunSend.run(WebSocketConnection.java:1836)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)
Caused by: java.net.UnknownHostException: NPSCAFRCHWS01.novoprod.local
at java.base/java.net.InetAddress$CachedAddresses.get(Unknown Source)
at java.base/java.net.InetAddress.getAllByName0(Unknown Source)
at java.base/java.net.InetAddress.getAllByName(Unknown Source)
at java.base/java.net.InetAddress.getAllByName(Unknown Source)
at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:45)
at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:112)
at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376)
at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
at com.inductiveautomation.metro.impl.protocol.websocket.WebSocketConnection$RunSend.run(WebSocketConnection.java:1797)
... 3 common frames omitted