MWG error starting GUI

[Cheng]

Hi Support,

I can't start Web GUI. The error message as below.

How to fixed this issue? Thanks.

2021-12-28 01:50:17,692 [ERROR] attaching to the Coordinator failed
java.net.ConnectException: Connection refused (Connection refused)
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:607)
at java.net.Socket.connect(Socket.java:556)
at java.net.Socket.<init>(Socket.java:452)
at java.net.Socket.<init>(Socket.java:229)
at com.scur.k.server.ww.adapter.AbstractAdapter.send(AbstractAdapter.java:150)
at com.scur.k.server.ww.WwCommunicationManager.getOwnUUID(WwCommunicationManager.java:110)
at com.scur.k.server.Konfigurator.attachToCoordinator(Konfigurator.java:1037)
at com.scur.k.server.Konfigurator.<init>(Konfigurator.java:196)
at com.scur.k.server.initialisation.KonfiguratorChecker.initKonfigurator(KonfiguratorChecker.java:82)
at com.scur.k.server.initialisation.KonfiguratorChecker.access$000(KonfiguratorChecker.java:38)
at com.scur.k.server.initialisation.KonfiguratorChecker$1.run(KonfiguratorChecker.java:207)
2021-12-28 01:50:17,693 [FATAL] Could not start Konfigurator:
java.net.ConnectException: Connection refused (Connection refused)
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:607)
at java.net.Socket.connect(Socket.java:556)
at java.net.Socket.<init>(Socket.java:452)
at java.net.Socket.<init>(Socket.java:229)
at com.scur.k.server.ww.adapter.AbstractAdapter.send(AbstractAdapter.java:150)
at com.scur.k.server.ww.WwCommunicationManager.getOwnUUID(WwCommunicationManager.java:110)
at com.scur.k.server.Konfigurator.attachToCoordinator(Konfigurator.java:1037)
at com.scur.k.server.Konfigurator.<init>(Konfigurator.java:196)
at com.scur.k.server.initialisation.KonfiguratorChecker.initKonfigurator(KonfiguratorChecker.java:82)
at com.scur.k.server.initialisation.KonfiguratorChecker.access$000(KonfiguratorChecker.java:38)
at com.scur.k.server.initialisation.KonfiguratorChecker$1.run(KonfiguratorChecker.java:207)

[mkutrieba]

Hello @Cheng,

which error do you get in the browser? Can you connect to the UI and get a McAfee error message or is connection already failing and you receive a browser block page?

In general (without any debug data), I can just suggest to check with netstat if the UI port 4711/4712 are listening, if you can connect from client to MWG on the port (maybe test with telnet form client side).

Further, check if any other MWG nodes in same Central Management (CM) have attached the UI to it during this time. Maybe run following command to restart mwg-ui service and check again:
#service mwg-ui restart

This is not much but worth a try, if it still does not help, please open a SR and attach a feedback file + screenshot from browser error. Before generating the feedback file, please fresh reproduce the issue so that we have error in latest logs.

FEEDBACK FILE
1) Navigate to "Troubleshooting" > select the MWG you are testing on > "Feedback"
2) Keep the option "Pause running McAfee Web Gateway to create a backtrace (recommended)" enabled (this will NOT stop any service!)
3) Click the "Create Feedback File" button. This way we get your policy, configuration and debug information.
Via CLI:
# /opt/mwg/bin/feedback.sh -l 2

[Cheng]

Hi Sir,

No,I can not connect to MWG UI. We tried to restart MWG service and still have problem.

Error message as below text.

2021-12-29 01:23:37,754 [ERROR] attaching to the Coordinator failed
java.net.ConnectException: Connection refused (Connection refused)
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:607)
at java.net.Socket.connect(Socket.java:556)
at java.net.Socket.<init>(Socket.java:452)
at java.net.Socket.<init>(Socket.java:229)
at com.scur.k.server.ww.adapter.AbstractAdapter.send(AbstractAdapter.java:150)
at com.scur.k.server.ww.WwCommunicationManager.getOwnUUID(WwCommunicationManager.java:110)
at com.scur.k.server.Konfigurator.attachToCoordinator(Konfigurator.java:1037)
at com.scur.k.server.Konfigurator.<init>(Konfigurator.java:196)
at com.scur.k.server.initialisation.KonfiguratorChecker.initKonfigurator(KonfiguratorChecker.java:82)
at com.scur.k.server.initialisation.KonfiguratorChecker.access$000(KonfiguratorChecker.java:38)
at com.scur.k.server.initialisation.KonfiguratorChecker$1.run(KonfiguratorChecker.java:207)
2021-12-29 01:23:37,756 [FATAL] Could not start Konfigurator:
java.net.ConnectException: Connection refused (Connection refused)
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:607)
at java.net.Socket.connect(Socket.java:556)
at java.net.Socket.<init>(Socket.java:452)
at java.net.Socket.<init>(Socket.java:229)
at com.scur.k.server.ww.adapter.AbstractAdapter.send(AbstractAdapter.java:150)
at com.scur.k.server.ww.WwCommunicationManager.getOwnUUID(WwCommunicationManager.java:110)
at com.scur.k.server.Konfigurator.attachToCoordinator(Konfigurator.java:1037)
at com.scur.k.server.Konfigurator.<init>(Konfigurator.java:196)
at com.scur.k.server.initialisation.KonfiguratorChecker.initKonfigurator(KonfiguratorChecker.java:82)
at com.scur.k.server.initialisation.KonfiguratorChecker.access$000(KonfiguratorChecker.java:38)
at com.scur.k.server.initialisation.KonfiguratorChecker$1.run(KonfiguratorChecker.java:207)

[root@mwgappl ~]# netstat -an | grep 4711
tcp6 0 0 :::4711 :::* LISTEN
[root@mwgappl ~]# netstat -an | grep 4712
tcp6 0 0 :::4712 :::* LISTEN
[root@mwgappl ~]#