I'm trying to use Wirecloud the latest version available for a simple mashup project. I'm using the ngsi-source operator to retrieve data from Orion, but this is not possible because I often encounter an NGSI Proxy Connection Error (504 Gateway Timeout).
I tried with different installations of the NGSI Proxy in different servers and I have noticed that I have a 200 status in the inner REST calls made by the ngsi-source operator, only when the NGSI Proxy is reachable from the Wirecloud server installation (django server).
When the proxy is reachable only from my browser (local machine), I encounter the 504 status.
The NGSI Proxy has to be reachable from the Wirecloud installation?
Thanks in advance for the answers.
Currently, the NGSI proxy has to be reachable from the WireCloud instance. The url you were seeing (http://<wirecloud domain>/cdp/http/<ngsi-proxy domain>/eventsource) is caused by the use of the Cross Domain Proxy. We developed the NGSI proxy service to allow cross domain requests from browsers and the event source endpoint cannot be used without a direct connection from the client side, so I've opened a ticket in the github repo to solve this bug.
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I am new to FIWARE. I managed to install Orion Context Broker on my local system following the steps mentioned in the FIWARE website. I am able to use CURL commands to create entities and also retrieve values.
I have also installed Wirecloud on my local system and able to access Wirecloud UI from my browser.
But I am unable to display the entities on the Wirecloud widgets. I have tried all widgets including "NGSI Type Browser", NGSI Browser and NGSI Source operator.
All returning the same error: "ConnectionError: Unexpected response from WireCloud's proxy"
Please help me on how to proceed. My NGSI-proxy is also running and listening on port 3000. Screenshots attached.
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Can you try to replace localhost with IP address of your machine running Orion and Ngsiproxy?
I need NGSI proxy over http. Is there any instance of NGSI Proxy over http?
Alternatively, Is it possible to install NGSI Proxy on my own server?
Many thanks.
We have restored the ngsiproxy.lab.fiware.org machine, this machine supports both protocols http and https.
Anyway, you can create your own ngsi-proxy instance downloading it from github.
I'm deploying some Generic Enablers(Orion, Cygnus, Proton-Cep, Wirecloud) in the same VM using dockers.
Reading the fiware documentation it uses has an example a wilma proxy securing an instance of orion and getting the authorization through IdM.
Wilma configurations do not seem to support different redirections
I need to secure all these services that I'm using which need to be accessed from outside the server, my question is if is it possible to use Wilma to secure all Generic Enablers or should I implement one instance of Wilma for each service provided?
How can we secure the communication between Orion and Cygnus?
How can we use cygnus with a protected Orion (pep is deployed above Orion broker)?
Thanks and best regards.
There are several ways of securing Orion->Cygnus communications:
Co-locate Orion and Cygnus in the same host, so all comunication are through localhost network interface (this solution assumes that the host itslef is properly secured, of course).
Using a firewall (e.g. iptables) so Cygnus port can be reached only from the IP where Orion runs.
Using HTTPS notifications. In order to use this option take into account that:
Cygnus should be able to receive notifications in HTTPS. I'm not fully sure about Cygnus capabilities with this regards, but my colleague #frb could provide more detail.
You need Rush to send notifications in HTTPS with Orion.
You can also explore the posibility of using a PEP proxy for Cygnus. You only need to secure one operation at Cygnus: POST /v1/notifyContext. Have a look to the PEP official documentation.
UPDATE: since verion 1.7.0, Orion implements native HTTPS notifications (i.e. without needing Rush).
I'm trying to deploy a Fiware-based system composed by Orion CB and some webapps, and I want to include security in this deployment by using the differents security GE availables.
OrionCB runs on Centos and (i.e)authorization-pdp-authzforce runs on Ubuntu TLS. Does this means that I need to use (i.e)two VPS?
AuthZForce is not supposed to be run on the same machine as Orion Context Broker. This doesn't mean that you can't, only that you are not forced to do it.
What would make more sense to run on the same machine (but still it is not a requirement) is to run a policy enforcement proxy. At the moment there are a couple that work with FIWARE:
FIWARE Wilma PEP Proxy.
FIWARE Orion PEP.
Both of them are developd using NodeJS, so they should run on a CentOS just fine. Keep in mind that even if you use AuthZForce you still need the a PEP proxy.