I'm trying to use the Thingsboard gateway to connect to a PFC200 PLC, which is running Codesys. I can't get the Gateway OPC-UA extension to connect.
The name 'pfc200' resolves OK in a terminal (ping pfc200) and port 4840 is open, but when I start the gateway, the gateway crashes with the Java exceptions listed in the log file. (snippet below)
I'm using the debian distribution from gitub; version 1.2.1 on a 64 bit Mint VM running under virtualbox. The name 'pfc200' is listed in /etc/hosts. I added a DNS name in my server, which also failed. Note: I still haven't figured out the proper Application URI. But .. I'll open another topic for that issue.
Thanks for any help.
Snippet from /var/log/tb-gateway/tb-gateway.log:
2017-11-04 10:27:39,602 [main] INFO o.t.g.e.opc.OpcUaServerMonitor - Initializing OPC-UA server connection to [pfc200:4840]!
2017-11-04 10:27:43,125 [main] ERROR o.t.g.e.opc.OpcUaServerMonitor - OPC-UA server connection failed!
java.util.concurrent.ExecutionException: java.nio.channels.UnresolvedAddressException
at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)
I used the free UAExpert tools to test the URI. After successfully testing my connection there to a Raspberry Pi running Codesys as an OPC Server I then used that URI in my JSON file for the gateway. You can get this from the properties of the connection in this software. This information should get you past that part:
You can also try typing in the IP address in the URI like this:
2018-02-13 17:54:44,267 [main] INFO o.t.g.e.opc.OpcUaServerMonitor - Initializing OPC-UA server connection to [192.168.1.29:4840]!
Related
I deployed Apache Active MQ on my Mac and the Transport connector is as follows.
<transportConnector name="openwire" uri="tcp://localhost:61616?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>
<transportConnector name="amqp" uri="amqp://localhost:5672?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>
However, I would like to replace "localhost" by a hostname that I specified in my /etc/hosts. I therefore modified my Transport Connector as follows:
After doing so, I have the following message when starting the broker:
Connecting to JMX URL: service:jmx:rmi:///jndi/rmi://localhost:1099/jmxrmi
INFO: Broker not available at: service:jmx:rmi:///jndi/rmi://localhost:1099/jmxrmi
Obviously, there is a JMX configuration that needs to be done ... but where? There is nothing related to JMX in conf/activemq.xml
Thanks for your help.
Christian
The ActiveMQ installation folder contains a bin dir where there is a file named "env" which has configuration for the JMX endpoints on the JVM that is started to house the broker. You can also place some user specific files in separate locations to control this. There is some documentation on this subject on the ActiveMQ website.
I am using windows 10 professional and I have installed docker using DockerToolBox, so I have a docker-machine running in VirtualBox. When trying to configure an interpreter in PyCharm using my docker-machine, I get the following error:
"Cannot connect: java.lang.NullPointerException: uri was not specified"
docker-machine error
When I choose 'TCP socket', I get the following error which is different from above:
"Cannot connect: java.io.IOException: Channel disconnected before any data was received"
TCP socket error
I am sure my docker-machine is running because I can connect to it using terminal tools like MobaXterm or XShell, and I can also connect to MySQL running in my docker-machine.
Replacing tcp:// by https:// in the api url works for me in Webstorm (Windows 8.1).
https://github.com/kubernetes/minikube/issues/580
I have tried thousands of methods, and finally resolved this problem. The solution is running pycharm as administrator. WTF
I have same issue.
You must check Pycharm logs. There is detailed information about error.
In my case Pycharm shows same error "Channel disconnected before any data was received".
But in logs i found that error is caused by:
"ERROR - HttpResponseStreamHandlerFixed - exceptionCaught before first read or disconnect, we may be hanging
io.netty.handler.codec.DecoderException: javax.net.ssl.SSLHandshakeException: No name matching "my_server_hostname" found"
In my case, the problem was that domain name that i connecting to is in not the same as hostname in SSL self signed cert installed in dockerd.
Domain name that you are connecting to must match domain name in SSL cert that dockerd uses.
I have to make hosts record (C:\Windows\System32\drivers\etc\hosts on Windows, and /etc/hosts on Linux) and connect to it.
And "https://" protocol is required :)
PS. You can check SSL cert hostname by opening Chrome browser to the docker API endpoint with https and opening certificate details.
I am trying to setup Neo4j version 3.2.0 in the ubuntu server 14.04.2 LTS
Downloaded the tar and extracted the folder, edited the config file to update the port to 4444, for the time being disabled the bolt connector, listen_address to 0.0.0.0 for the http connector, authentication also disabled just to get started.
bolt connector is updated with the port 7687 even though it is disabled as i was trying earlier with it enabled.
Now when i try to connect to the http://serverip:4444/browser, it says Database access not available and shows me the login screen with host prefilled bolt://serverip:7687
Also I see this error on the console window
WebSocket connection to ws://serverip:7687/
failed: Error in connection establishment:
net::ERR_CONNECTION_TIMED_OUT
Dont understand the issues here, please help me out. I am not sure why is it trying to do a WS to the port assigned to the bolt, when it is disabled at the first place.
Regards
There's a bit of juggling going on for HTTP connector support between the browser and the driver being used, a handoff which isn't complete, and the state of things is the browser is only supporting bolt connections right now.
The javascript bolt driver is being upgraded to handle http connections, I think, so you may need to wait until the next 3.2.x release to use the http connector again.
I think this issue should be tracking it.
I am trying to deploy a data flow server on Cloud foundry and create a simple app.
Only https end point could be exposed. I cannot enable https using this :
http://docs.spring.io/spring-cloud-dataflow/docs/current-SNAPSHOT/reference/htmlsingle/#configuration-security-enabling-https
As ssl is managed by cf. How do I make data flow server using https?
I have this error:
dataflow:>app list
Command failed org.springframework.web.client.ResourceAccessException: I/O error on GET request for "http://dataflow-server.run.aws-usw02-pr.ice.predix.io/apps": Connect to dataflow-server.run.aws-usw02-pr.ice.predix.io:80 [dataflow-server.run.aws-usw02-pr.ice.predix.io/54.201.89.124, dataflow-server.run.aws-usw02-pr.ice.predix.io/52.88.128.224] failed: Connection refused (Connection refused); nested exception is org.apache.http.conn.HttpHostConnectException: Connect to dataflow-server.run.aws-usw02-pr.ice.predix.io:80 [dataflow-server.run.aws-usw02-pr.ice.predix.io/54.201.89.124, dataflow-server.run.aws-usw02-pr.ice.predix.io/52.88.128.224] failed: Connection refused (Connection refused)
Thanks in advance.
Best Regards
as you already mentioned, you can not enable https at the container level inside cloudfoundry today. The traffic between the router and diego cell is not encrypted (unless you are using IPSEC).
So your dataflow server would not be configured with https, just deploy the server as it is. You should rely on your cloudfoundry install to have an open port at 443 on it's loadbalancer that forwards traffic to the router. Later CF incarnations support certificate placement at the router level.
Now, at the client (dataflow-shell) if you are using a valid certificate you don't need to do anything, but if you have a selfsigned certificate, you need to tell it to accept self-signed certificates, or skip validation all together.
I did install Opennms in a VM Ubuntu on PROXMOX. Everything went well until I did change the interface IP address because the VM must work in a LAN without Internet access. Since then the opennms start correctly but the browser give me the error:
Jetty: HTTP ERROR: 503
Problem accessing /opennms/. Reason:
Service Unavailable
The problem seems to be related with the connection to Internet at the starting of opennms. When I start opens without Internet connection the server do to start correctly.
OpenNMS has a bugfix that may take care of it.
http://issues.opennms.org/browse/NMS-7683