Technical FAQ

In which platforms has been Sentilo tested ?

The first deployment for the Barcelona City Council has been tested in the following infraestructure:

  • Four virtual machines, two for the front-ends and another two for the back-end
  • All of them use as operating system Ubuntu server LTS 12.04
  • The real time database server(Redis) works with 16 GB of memory and 36 GB of hard disk
  • The other three servers works with 4 GB of memory and 16 GB of hard disk

Another deployment configuration should work properly, always keeping in mind the expected load by the system.
There also a virtual machine ready for use that can be used for testing purposes.

I successfully published an observation, but I cannot see the data in catalog.

Check that the Catalog and Sentilo API Server are in the same timezone, for example in UTC.
Make sure the sentilo-server script has the following VM option: 

-Duser.timezone=UTC 

Also, make sure that the Tomcat that hosts the Catalog application has the same option, for example en $JAVA_OPTS variable.


Maps is not showing up in Catalog application

Recently Google changed it policy regarding Maps key. Please go to https://developers.google.com/maps/documentation/javascript/get-api-key and create one.

If you are using the last release of Sentilo(1.6) you can define the API key inside the catalog-config.properties configuration file:

# Google API key to use Google Maps
google.api.key=<your key> 

I created a provider and immediately after that, an observation using the new provider's token is rejected with 401 "Invalid credential"

The providers are activated in a background job that runs every 5 minutes. Please wait a moment :-)


The command mvn package appassembler:assemble fails.

You have to execute the command in the directory of the component you want to install.


I think I installed Sentilo. How can I confirm all is up & running?.

You can use this script:

./scripts/testServerStatus.sh

You also might want to check Platform Testing

If you installed everything on your local machine, you can access the catalog at http://localhost:8080/sentilo-catalog-web and the REST API at http://localhost:8081

Last modified by Administrator on 2018/01/05 16:27