Created question in FIWARE Q/A platform on 18-04-2017 at 00:04
Please, ANSWER this question AT https://stackoverflow.com/questions/43460906/fiware-cygnus-build-failure

Question:
Fiware cygnus build failure

Description:
I wanted to use Fiware cygnus to persist data from the context broker into a CKAN instance. I've already created an orion context broker vm which is orion-psb-image-R5.4 version 1.7.0 and a ckan VM on Fiware cloud. I began to install fiware cygnus knowing that the cygnus is based on both cygnus-common and cygnus-ngsi . So, i started by downloading the fiware-cygnus https://github.com/telefonicaid/fiware-cygnus
, then i began building cygnus-common successfully using maven 3.2.5 . But when i started to build cygnus-ngsi it failed although i've tried many ways to solve this but Noone worked .
Here's what i have done in details .

Firstly installing Apache Flume as described here http://fiware-cygnus.readthedocs.io/en/1.3.0/cygnus-common/installation_and_administration_guide/install_from_sources/index.html

$ wget http://www.eu.apache.org/dist/flume/1.4.0/apache-flume-1.4.0-bin.tar.gz
tar xvzf apache-flume-1.4.0-bin.tar.gz
$ mv apache-flume-1.4.0-bin APACHE_FLUME_HOME
$ mv APACHE_FLUME_HOME/lib/httpclient-4.2.1.jar APACHE_FLUME_HOME/lib/httpclient-4.2.1.jar.old
$ mv APACHE_FLUME_HOME/lib/httpcore-4.2.1.jar APACHE_FLUME_HOME/lib/httpcore-4.2.1.jar.old
$ mv APACHE_FLUME_HOME/lib/libthrift-0.7.0.jar APACHE_FLUME_HOME/lib/libthrift-0.7.0.jar.old
$ mkdir -p APACHE_FLUME_HOME/plugins.d/cygnus/
$ mkdir APACHE_FLUME_HOME/plugins.d/cygnus/lib
$ mkdir APACHE_FLUME_HOME/plugins.d/cygnus/libext

secondly , downloading fiware-cygnus and building cygnus-common:

git clone https://github.com/telefonicaid/fiware-cygnus.git

cd fiware-cygnus/cygnus-common

mvn clean compile exec:exec assembly:single

cp target/cygnus-common-1.7.0-jar-with-dependencies.jar /usr/cygnus/plugins.d/cygnus/libext

mvn install:install-file -Dfile=/usr/cygnus/plugins.d/cygnus/libext/cygnus-common-1.7.0_SNAPSHOT-jar-with-dependencies.jar -DgroupId=com.telefonica.iot -DartifactId=cygnus-common -Dversion=1.7.0 -Dpackaging=jar -DgeneratePom=false

cp target/classes/cygnus-flume-ng /usr/cygnus/bin/cygnus-flume-ng

then i started bulding cygnus-ngsi as follows

cd cygnus-ngsi

mvn clean compile exec:exec assembly:single

and i got these results on building it:

[INFO] Building cygnus-ngsi 1.7.0_SNAPSHOT
[INFO] ------------------------------------------------------------------------
[WARNING] The POM for com.telefonica.iot:cygnus-common:jar:1.7.0_SNAPSHOT is missing, no dependency information available
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.243 s
[INFO] Finished at: 2017-04-17T22:04:25+00:00
[INFO] Final Memory: 7M/28M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project cygnus-ngsi: Could not resolve dependencies for project com.telefonica.iot:cygnus-ngsi:jar:1.7.0_SNAPSHOT: Could not find artifact com.telefonica.iot:cygnus-common:jar:1.7.0_SNAPSHOT -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException

I copied the generated jar file to the /usr/cygnus/plugins.d/cygnus/libext as explained in the same link above by running:

cp cygnus-common/target/cygnus-common-1.7.0_SNAPSHOT-jar-with-dependencies.jar /usr/cygnus/plugins.d/cygnus/libext

also i have copied the jar file to maven repository path to make sure everything is set properly by running the command

cp cygnus-common/target/cygnus-common-1.7.0_SNAPSHOT-jar-with-dependencies.jar ~/.m2/repository/com/telefonica/iot/cygnus-common/1.7.0

Now i have in the ~/.m2/repository/com/telefonica/iot/cygnus-common/1.7.0 directory two jars, the cygnus-common-1.7.0_SNAPSHOT-jar-with-dependencies.jar and cygnus-common-1.7.0.jar as well as the usr/cygnus/plugins.d/cygnus/libext directory containing them and actually i don't know whether the existence of two jars inside either of these directories would make a problem or not.

i also thought that the cygnus-ngsi pom.xml file could be a part of the problem .. and here's the pom.xml of cygnus-ngsi:

<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<groupId>com.telefonica.iot</groupId>
<artifactId>cygnus-ngsi</artifactId>
<version>1.7.0_SNAPSHOT</version>
<packaging>jar</packaging>

<name>cygnus-ngsi</name>
<url>http://maven.apache.org&lt;/url&gt;

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>

<dependencies>
<!-- Required for testing -->
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>1.9.5</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- Required by NGSIRestHandler -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpcore</artifactId>
<version>4.3.1</version>
</dependency>
<!-- Required for logging -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.7.21</version>
</dependency>
<!-- Required by NameMapper -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
<!-- Required by any agent -->
<dependency>
<groupId>com.telefonica.iot</groupId>
<artifactId>cygnus-common</artifactId>
<version>1.7.0_SNAPSHOT</version>
</dependency>
</dependencies>

<build>
<!-- reference: http://stackoverflow.com/questions/3697449/retrieve-version-from-maven-pom-xml-in-code -->
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<pluginManagement>
<plugins>
<!-- Explicit Java version declaration in needed in some systems in which Maven seems not -->
<!-- being able to find itself the right version. Many systems don't need this declaration -->
<!-- but it doesn't use to hurt anyway -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
<compilerArgument></compilerArgument>
<fork>true</fork>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.6</version>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
<!-- http://www.chrissearle.org/2009/09/05/Using_maven-exec-plugin_to_store_the_current_git_sha_in_a_build/ -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.5.0</version>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>exec</goal>
</goals>
</execution>
</executions>
<configuration>
<executable>git</executable>
<arguments>
<argument>rev-parse</argument>
<argument>HEAD</argument>
</arguments>
<outputFile>target/classes/last_git_commit.txt</outputFile>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<reportPlugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>cobertura-maven-plugin</artifactId>
<version>2.6</version>
<configuration>
<aggregate>true</aggregate>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-report-plugin</artifactId>
<version>2.16</version>
<configuration>
<aggregate>true</aggregate>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
<version>2.12</version>
<configuration>
<configLocation>telefonica_checkstyle.xml</configLocation>
<includeTestSourceDirectory>false</includeTestSourceDirectory>
<failOnViolation>false</failOnViolation>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.9</version>
<configuration>
<aggregate>true</aggregate>
</configuration>
</plugin>
</reportPlugins>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>

Now i want to know what may cause this failure . All i want to do is to set a cygnus agent to use the ckansink by configuring the agent_.conf file with providing the necessary ckan parameters and then start the cygnus. and i know that this process wouldn't be completed unless the cygnus-ngsi was built successfuly

EDIT : Now, i tried removing all previous cygnus files by running

sudo rpm -e -vv --allmatches --nodeps --noscripts --notriggers cygnus
sudo rpm -e -vv --allmatches --nodeps --noscripts --notriggers cygnus-ngsi

And then i installed the cygnus-common and cygnus-ngsi 1.7.0 using the rpm
and they were succesfully installed. then i configured the necessary ckan parameters in the /usr/cygnus/conf/agent_1.conf file.

The problem now is when i start the cygnus by running

/usr/cygnus/bin/cygnus-flume-ng agent --conf /usr/cygnus/conf/ -f /usr/cygnus/conf/agent_1.conf -n cygnusagent -Dflume.root.logger=INFO,console

i get these logs ending only with the jetty server listening on 8081 as follows:

Info: Sourcing environment configuration script /usr/cygnus/conf/flume-env.sh
+ exec /usr/lib/jvm/java-1.7.0-openjdk.x86_64/bin/java -Xmx20m -Dflume.root.logger=INFO,console -cp '/usr/cygnus/conf:/usr/cygnus/lib/:/usr/cygnus/plugins.d/cygnus/lib/:/usr/cygnus/plugins.d/cygnus/libext/*' -Djava.library.path= com.telefonica.iot.cygnus.nodes.CygnusApplication -f /usr/cygnus/conf/agent_1.conf -n cygnusagent
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/usr/cygnus/lib/slf4j-log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/usr/cygnus/plugins.d/cygnus/lib/cygnus-ngsi-1.7.0-jar-with-dependencies.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/usr/cygnus/plugins.d/cygnus/libext/cygnus-common-1.7.0-jar-with-dependencies.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
time=2017-04-18T16:34:31.961Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp= | op=main | msg=com.telefonica.iot.cygnus.nodes.CygnusApplication[166] : Starting Cygnus, version 1.7.0.UNKNOWN
time=2017-04-18T16:34:32.156Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=main | msg=com.telefonica.iot.cygnus.nodes.CygnusApplication[289] : Waiting for valid Flume components references...
time=2017-04-18T16:34:32.156Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=start | msg=org.apache.flume.node.PollingPropertiesFileConfigurationProvider[61] : Configuration provider starting
time=2017-04-18T16:34:32.159Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=run | msg=org.apache.flume.node.PollingPropertiesFileConfigurationProvider$FileWatcherRunnable[133] : Reloading configuration file:/usr/cygnus/conf/agent_1.conf
time=2017-04-18T16:34:32.182Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:dynamodb-sink
time=2017-04-18T16:34:32.182Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:hdfs-sink
time=2017-04-18T16:34:32.182Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:hdfs-sink
time=2017-04-18T16:34:32.182Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:sth-sink
time=2017-04-18T16:34:32.182Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:ckan-sink
time=2017-04-18T16:34:32.187Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:dynamodb-sink
time=2017-04-18T16:34:32.187Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:ckan-sink
time=2017-04-18T16:34:32.187Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:cartodb-sink
time=2017-04-18T16:34:32.188Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:ckan-sink
time=2017-04-18T16:34:32.188Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:cartodb-sink
time=2017-04-18T16:34:32.188Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:mongo-sink
time=2017-04-18T16:34:32.188Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:mysql-sink
time=2017-04-18T16:34:32.190Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:ckan-sink
time=2017-04-18T16:34:32.191Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:mysql-sink
time=2017-04-18T16:34:32.191Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:hdfs-sink
time=2017-04-18T16:34:32.191Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:ckan-sink
time=2017-04-18T16:34:32.191Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:ckan-sink
time=2017-04-18T16:34:32.191Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:hdfs-sink
time=2017-04-18T16:34:32.191Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[930] : Added sinks: hdfs-sink mysql-sink ckan-sink mongo-sink sth-sink kafka-sink dynamodb-sink postgresql-sink cartodb-sink Agent: cygnus-ngsi
time=2017-04-18T16:34:32.191Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:ckan-sink
time=2017-04-18T16:34:32.191Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:kafka-sink
time=2017-04-18T16:34:32.192Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:cartodb-sink
time=2017-04-18T16:34:32.192Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:hdfs-sink
time=2017-04-18T16:34:32.192Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:hdfs-sink
time=2017-04-18T16:34:32.192Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:ckan-sink
time=2017-04-18T16:34:32.192Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:ckan-sink
time=2017-04-18T16:34:32.192Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:ckan-sink
time=2017-04-18T16:34:32.192Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:ckan-sink
time=2017-04-18T16:34:32.192Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:hdfs-sink
time=2017-04-18T16:34:32.193Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:kafka-sink
time=2017-04-18T16:34:32.193Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:ckan-sink
time=2017-04-18T16:34:32.193Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:ckan-sink
time=2017-04-18T16:34:32.193Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:ckan-sink
time=2017-04-18T16:34:32.193Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:sth-sink
time=2017-04-18T16:34:32.193Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:dynamodb-sink
time=2017-04-18T16:34:32.193Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:ckan-sink
time=2017-04-18T16:34:32.194Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:dynamodb-sink
time=2017-04-18T16:34:32.194Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:postgresql-sink
time=2017-04-18T16:34:32.194Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:postgresql-sink
time=2017-04-18T16:34:32.195Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:ckan-sink
time=2017-04-18T16:34:32.195Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:ckan-sink
time=2017-04-18T16:34:32.198Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=addProperty | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[1016] : Processing:mongo-sink
time=2017-04-18T16:34:32.220Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=validateConfiguration | msg=org.apache.flume.conf.FlumeConfiguration[140] : Post-validation flume configuration contains configuration for agents: [cygnus-ngsi]
time=2017-04-18T16:34:32.221Z | lvl=WARN | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=getConfiguration | msg=org.apache.flume.node.AbstractConfigurationProvider[138] : No configuration found for this host:cygnusagent
time=2017-04-18T16:34:32.224Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=startAllComponents | msg=org.apache.flume.node.Application[138] : Starting new configuration:{ sourceRunners:{} sinkRunners:{} channels:{} }
time=2017-04-18T16:34:33.156Z | lvl=INFO | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=main | msg=com.telefonica.iot.cygnus.nodes.CygnusApplication[301] : Starting a Jetty server listening on 0.0.0.0:8081 (Management Interface)

and when i test the cygnus from another terminal with a notification.sh testing file i get connection refused.

[centos@orcb2 ~]$ ./notification.sh http://localhost:5050/notify

• About to connect() to localhost port 5050 (#0)
• Trying ::1... Connection refused
• Trying 127.0.0.1... Connection refused
• couldn't connect to host
• Closing connection #0
  curl: (7) couldn't connect to host

Although the configuration files are supposed to be correct as i think
and they are as follows:

these are my agent_1.conf file source and ckan configuration parameters :

=============================================
source configuration

cygnus-ngsi.sources.http-source.channels = hdfs-channel mysql-channel ckan-channel mongo-channel sth-channel kafka-channel dynamodb-channel postgresql-channel

cygnus-ngsi.sources.http-source.type = org.apache.flume.source.http.HTTPSource

cygnus-ngsi.sources.http-source.port = 5050

cygnus-ngsi.sources.http-source.handler = com.telefonica.iot.cygnus.handlers.NGSIRestHandler

cygnus-ngsi.sources.http-source.handler.notification_target = /notify

cygnus-ngsi.sources.http-source.handler.default_service = default

cygnus-ngsi.sources.http-source.handler.default_service_path = /

cygnus-ngsi.sources.http-source.interceptors = ts gi

cygnus-ngsi.sources.http-source.interceptors.ts.type = timestamp

cygnus-ngsi.sources.http-source.interceptors.gi.type = com.telefonica.iot.cygnus.interceptors.NGSIGroupingInterceptor$Builder

cygnus-ngsi.sources.http-source.interceptors.gi.grouping_rules_conf_file = /usr/cygnus/conf/grouping_rules.conf

1. ============================================
   NGSICKANSink configuration
   cygnus-ngsi.sinks.ckan-sink.channel = ckan-channel

cygnus-ngsi.sinks.ckan-sink.type =com.telefonica.iot.cygnus.sinks.NGSICKANSink

cygnus-ngsi.sinks.ckan-sink.enable_grouping = false

cygnus-ngsi.sinks.ckan-sink.enable_name_mappings = false

cygnus-ngsi.sinks.ckan-sink.enable_encoding = false

cygnus-ngsi.sinks.ckan-sink.api_key = xxxxxxxx-xxxx-xxxxxx-xxxxx
cygnus-ngsi.sinks.ckan-sink.ckan_host = http://130.206.120.212

cygnus-ngsi.sinks.ckan-sink.ckan_port = 8080

cygnus-ngsi.sinks.ckan-sink.ckan_viewer = recline_grid_view

cygnus-ngsi.sinks.ckan-sink.orion_url = http://localhost:1026

cygnus-ngsi.sinks.ckan-sink.attr_persistence = row

cygnus-ngsi.sinks.ckan-sink.ssl = false

cygnus-ngsi.sinks.ckan-sink.batch_size = 100

cygnus-ngsi.sinks.ckan-sink.batch_timeout = 30

cygnus-ngsi.sinks.ckan-sink.batch_ttl = 10

cygnus-ngsi.sinks.ckan-sink.backend.max_conns = 500

cygnus-ngsi.sinks.ckan-sink.backend.max_conns_per_route = 100

and this is my cygnus_instance_1.conf

CYGNUS_USER=cygnus

CONFIG_FOLDER=/usr/cygnus/conf

CONFIG_FILE=/usr/cygnus/conf/agent_1.conf

AGENT_NAME=cygnusagent

LOGFILE_NAME=cygnus.log

ADMIN_PORT=8081

POLLING_INTERVAL=30

So, is missing in the whole configurations and what could be fixed to let the httpsource accept my notification requests ?