Created question in FIWARE Q/A platform on 02-06-2024 at 03:06
Please, ANSWER this question AT https://stackoverflow.com/questions/78565261/failed-to-connect-to-fiware-cygnus-3-8-0

Question:
Failed to connect to FIWARE Cygnus 3.8.0

Description:
To set up MongoDB and PostgreSQL backends on FIWARE Cygnus 3.8.0, I created the following docker-compose.yml file:
services:

orion:
image: telefonicaiot/fiware-orion:3.12.0
depends_on:

• mongo
  ports:
• 1026:1026

mongo:
image: mongo:4.4
ports:

• 27017:27017

cygnus:
image: telefonicaiot/fiware-cygnus:3.8.0
depends_on:

• mongo
• postgres
  environment:
• CYGNUS_API_PORT=5080
• CYGNUS_MONGO_SERVICE_PORT=5051
• CYGNUS_MONGO_HOSTS=mongo:27017
• CYGNUS_POSTGRESQL_SERVICE_PORT=5055
• CYGNUS_POSTGRESQL_HOST=postgres
• CYGNUS_POSTGRESQL_PORT=5432
• CYGNUS_POSTGRESQL_USER=postgres
• CYGNUS_POSTGRESQL_PASS=postgres
• CYGNUS_MULTIAGENT=true
• CYGNUS_LOG_LEVEL=debug
  ports:
• 5080:5080
• 5051:5051
• 5055:5055

postgres:
image: postgres:15
environment:

• POSTGRES_PASSWORD=postgres

Then, I run it.
docker compose up -d

I tried sanity check for cygnus. I wanted to get a version of Cygnus.
I got the following error when trying to get a version:
$ curl http://localhost:5080/v1/version
curl: (56) Recv failure: Connection reset by peer

Is there something wrong with my configuration?
The log of Cygnus was as shown:
$ docker compose logs cygnus
cygnus-1 | INFO: Using JAVA_OPTS: <-Xms2048m -Xmx4096m>
cygnus-1 | Warning: JAVA_HOME is not set!
cygnus-1 | + exec /usr/bin/java -Xms2048m -Xmx4096m -Dflume.root.logger=debug,LOGFILE -Duser.timezone=UTC -Dfile.encoding=UTF-8 -cp '/opt/apache-flume/conf:/opt/apache-flume/lib/:/opt/apache-flume/plugins.d/cygnus/lib/:/opt/apache-flume/plugins.d/cygnus/libext/*' -Djava.library.path= com.telefonica.iot.cygnus.nodes.CygnusApplication -f /opt/apache-flume/conf/agent_mongo.conf -n cygnus-ngsi -p 5081
cygnus-1 | Warning: JAVA_HOME is not set!
cygnus-1 | + exec /usr/bin/java -Xms2048m -Xmx4096m -Dflume.root.logger=debug,LOGFILE -Duser.timezone=UTC -Dfile.encoding=UTF-8 -cp '/opt/apache-flume/conf:/opt/apache-flume/lib/:/opt/apache-flume/plugins.d/cygnus/lib/:/opt/apache-flume/plugins.d/cygnus/libext/*' -Djava.library.path= com.telefonica.iot.cygnus.nodes.CygnusApplication -f /opt/apache-flume/conf/agent_postgresql.conf -n cygnus-ngsi -p 5084
cygnus-1 | SLF4J: Class path contains multiple SLF4J bindings.
cygnus-1 | SLF4J: Found binding in [jar:file:/opt/apache-flume/lib/log4j-slf4j-impl-2.18.0.jar!/org/slf4j/impl/StaticLoggerBinder.class]
cygnus-1 | SLF4J: Found binding in [jar:file:/opt/apache-flume/plugins.d/cygnus/lib/cygnus-ngsi-3.8.0-jar-with-dependencies.jar!/org/slf4j/impl/StaticLoggerBinder.class]
cygnus-1 | SLF4J: Found binding in [jar:file:/opt/apache-flume/plugins.d/cygnus/libext/cygnus-common-3.8.0-jar-with-dependencies.jar!/org/slf4j/impl/StaticLoggerBinder.class]
cygnus-1 | SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
cygnus-1 | SLF4J: Class path contains multiple SLF4J bindings.
cygnus-1 | SLF4J: Found binding in [jar:file:/opt/apache-flume/lib/log4j-slf4j-impl-2.18.0.jar!/org/slf4j/impl/StaticLoggerBinder.class]
cygnus-1 | SLF4J: Found binding in [jar:file:/opt/apache-flume/plugins.d/cygnus/lib/cygnus-ngsi-3.8.0-jar-with-dependencies.jar!/org/slf4j/impl/StaticLoggerBinder.class]
cygnus-1 | SLF4J: Found binding in [jar:file:/opt/apache-flume/plugins.d/cygnus/libext/cygnus-common-3.8.0-jar-with-dependencies.jar!/org/slf4j/impl/StaticLoggerBinder.class]
cygnus-1 | SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
cygnus-1 | SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory]
cygnus-1 | SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory]
cygnus-1 | time=2024-06-02T00:50:30.312Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.orion-sink.orion_fiware_path =
cygnus-1 | time=2024-06-02T00:50:30.317Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.postgresql-sink.postgresql_username =
cygnus-1 | time=2024-06-02T00:50:30.317Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.mysql-sink.mysql_username =
cygnus-1 | time=2024-06-02T00:50:30.317Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.mongo-sink.mongo_auth_source =
cygnus-1 | time=2024-06-02T00:50:30.318Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.orion-sink.orion_fiware =
cygnus-1 | time=2024-06-02T00:50:30.318Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.sth-sink.mongo_password =
cygnus-1 | time=2024-06-02T00:50:30.319Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.orion-sink.orion_password =
cygnus-1 | time=2024-06-02T00:50:30.319Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.sth-sink.mongo_username =
cygnus-1 | time=2024-06-02T00:50:30.319Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.sth-sink.mongo_replica_set =
cygnus-1 | time=2024-06-02T00:50:30.320Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.mongo-sink.mongo_username =
cygnus-1 | time=2024-06-02T00:50:30.320Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.arcgis-sink.arcgis_password =
cygnus-1 | time=2024-06-02T00:50:30.320Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.mysql-sink.mysql_password =
cygnus-1 | time=2024-06-02T00:50:30.321Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.postgresql-sink.postgresql_password =
cygnus-1 | time=2024-06-02T00:50:30.321Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.orion-sink.orion_username =
cygnus-1 | time=2024-06-02T00:50:30.321Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.sth-sink.mongo_auth_source =
cygnus-1 | time=2024-06-02T00:50:30.322Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.postgis-sink.postgis_username =
cygnus-1 | time=2024-06-02T00:50:30.322Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.arcgis-sink.arcgis_username =
cygnus-1 | time=2024-06-02T00:50:30.322Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.mongo-sink.mongo_replica_set =
cygnus-1 | time=2024-06-02T00:50:30.323Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.hdfs-sink.hdfs_username =
cygnus-1 | time=2024-06-02T00:50:30.323Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.ckan-sink.api_key =
cygnus-1 | time=2024-06-02T00:50:30.323Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.postgis-sink.postgis_password =
cygnus-1 | time=2024-06-02T00:50:30.323Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.mongo-sink.mongo_password =
cygnus-1 | time=2024-06-02T00:50:30.324Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.hdfs-sink.oauth2_token =
cygnus-1 | time=2024-06-02T00:50:30.324Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=validateConfigFilterSet | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[623] : Agent configuration for 'cygnus-ngsi' has no configfilters.
cygnus-1 | time=2024-06-02T00:50:30.392Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.orion-sink.orion_fiware_path =
cygnus-1 | time=2024-06-02T00:50:30.397Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.mysql-sink.mysql_username =
cygnus-1 | time=2024-06-02T00:50:30.397Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.mongo-sink.mongo_auth_source =
cygnus-1 | time=2024-06-02T00:50:30.397Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.orion-sink.orion_fiware =
cygnus-1 | time=2024-06-02T00:50:30.398Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.sth-sink.mongo_password =
cygnus-1 | time=2024-06-02T00:50:30.398Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.orion-sink.orion_password =
cygnus-1 | time=2024-06-02T00:50:30.399Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.sth-sink.mongo_username =
cygnus-1 | time=2024-06-02T00:50:30.399Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.sth-sink.mongo_replica_set =
cygnus-1 | time=2024-06-02T00:50:30.399Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.mongo-sink.mongo_username =
cygnus-1 | time=2024-06-02T00:50:30.400Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.arcgis-sink.arcgis_password =
cygnus-1 | time=2024-06-02T00:50:30.400Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.mysql-sink.mysql_password =
cygnus-1 | time=2024-06-02T00:50:30.400Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.orion-sink.orion_username =
cygnus-1 | time=2024-06-02T00:50:30.401Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.sth-sink.mongo_auth_source =
cygnus-1 | time=2024-06-02T00:50:30.401Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.postgis-sink.postgis_username =
cygnus-1 | time=2024-06-02T00:50:30.402Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.arcgis-sink.arcgis_username =
cygnus-1 | time=2024-06-02T00:50:30.402Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.mongo-sink.mongo_replica_set =
cygnus-1 | time=2024-06-02T00:50:30.402Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.hdfs-sink.hdfs_username =
cygnus-1 | time=2024-06-02T00:50:30.403Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.ckan-sink.api_key =
cygnus-1 | time=2024-06-02T00:50:30.403Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.postgis-sink.postgis_password =
cygnus-1 | time=2024-06-02T00:50:30.403Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.mongo-sink.mongo_password =
cygnus-1 | time=2024-06-02T00:50:30.404Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=<init> | msg=org.apache.flume.conf.FlumeConfiguration[126] : Configuration property ignored: cygnus-ngsi.sinks.hdfs-sink.oauth2_token =
cygnus-1 | time=2024-06-02T00:50:30.404Z | lvl=WARN | corr=N/A | trans=N/A | srv=N/A | subsrv=N/A | comp=N/A | op=validateConfigFilterSet | msg=org.apache.flume.conf.FlumeConfiguration$AgentConfiguration[623] : Agent configuration for 'cygnus-ngsi' has no configfilters.
cygnus-1 | time=2024-06-02T00:50:31.137Z | lvl=WARN | corr= | trans= | srv= | subsrv= | comp= | op=checkPathsWithUncoveredHttpMethods | msg=org.eclipse.jetty.security.ConstraintSecurityHandler[759] : ServletContext@o.e.j.s.ServletContextHandler@2ceea862

has uncovered http methods for path: /*
cygnus-1 | % Total % Received % Xferd Average Speed Time Time Time Current
cygnus-1 | Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 -::- -::- -::- 0
cygnus-1 | curl: (7) Failed to connect to localhost port 5080 after 0 ms: Couldn't connect to server

But, when I set up MongoDB, MySQL and PostgreSQL backends, I was able to get the cygnus version.
services:

orion:
image: telefonicaiot/fiware-orion:3.12.0
depends_on:

• mongo
  ports:
• 1026:1026

mongo:
image: mongo:4.4
ports:

• 27017:27017

cygnus:
image: telefonicaiot/fiware-cygnus:3.8.0
depends_on:

• mongo
• mysql
• postgres
  environment:
• CYGNUS_API_PORT=5080
• CYGNUS_MONGO_SERVICE_PORT=5051
• CYGNUS_MONGO_HOSTS=mongo:27017
• CYGNUS_MYSQL_SERVICE_PORT=5050
• CYGNUS_MYSQL_HOST=mysql
• CYGNUS_MYSQL_PORT=3306
• CYGNUS_MYSQL_USER=root
• CYGNUS_MYSQL_PASS=mysql
• CYGNUS_POSTGRESQL_SERVICE_PORT=5055
• CYGNUS_POSTGRESQL_HOST=postgres
• CYGNUS_POSTGRESQL_PORT=5432
• CYGNUS_POSTGRESQL_USER=postgres
• CYGNUS_POSTGRESQL_PASS=postgres
• CYGNUS_MULTIAGENT=true
• CYGNUS_LOG_LEVEL=debug
  ports:
• 5080:5080
• 5051:5051
• 5050:5050
• 5055:5055

mysql:
image: mysql:8.1
environment:

• MYSQL_ROOT_PASSWORD=mysql

postgres:
image: postgres:15
environment:

• POSTGRES_PASSWORD=postgres

$ curl http://localhost:5080/v1/version

My environment is as shown:
OS: Ubuntu 2204
Arch: x86_64
Docker: Docker version 26.1.3, build b72abbb
Docker compose: Docker Compose version v2.27.0
Linux ubuntu 6.5.0-35-generic #35~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue May 7 09:00:52 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

The agent.conf file is as shown:
$ docker compose up -d
[+] Running 5/5
✔ Network cygnus_default Created 0.0s
✔ Container cygnus-mongo-1 Started 0.6s
✔ Container cygnus-postgres-1 Started 0.6s
✔ Container cygnus-orion-1 Started 1.1s
✔ Container cygnus-cygnus-1 Started 1.2s

$ docker compose ps
NAME IMAGE COMMAND SERVICE CREATED STATUS PORTS
cygnus-cygnus-1 telefonicaiot/fiware-cygnus:3.8.0 "/cygnus-entrypoint.…" cygnus 9 minutes ago Up 9 minutes 0.0.0.0:5051->5051/tcp, :::5051->5051/tcp, 0.0.0.0:5055->5055/tcp, :::5055->5055/tcp, 5050/tcp, 0.0.0.0:5080->5080/tcp, :::5080->5080/tcp
cygnus-mongo-1 mongo:4.4 "docker-entrypoint.s…" mongo 9 minutes ago Up 9 minutes 0.0.0.0:27017->27017/tcp, :::27017->27017/tcp
cygnus-postgres-1 postgres:15 "docker-entrypoint.s…" postgres 9 minutes ago Up 9 minutes 5432/tcp

$ curl http://localhost:5080/v1/version
curl: (56) Recv failure: Connection reset by peer

$ docker compose exec cygnus bash

root@2357e22612da:/opt/fiware-cygnus# echo $

/conf
agent.conf agent_postgresql.conf flume-conf.properties.template flume-env.sh.template log4j2.xml
agent_mongo.conf cartodb_keys.conf flume-env.ps1.template log4j2.properties name_mappings.conf

root@2357e22612da:/opt/fiware-cygnus# cat $

/conf/agent.conf
#

1. Copyright 2016 Telefonica Investigación y Desarrollo, S.A.U
   #
2. This file is part of fiware-cygnus (FI-WARE project).
   #
3. fiware-cygnus is free software: you can redistribute it and/or modify it under the terms of the GNU Affero
4. General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
5. option) any later version.
6. fiware-cygnus is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
7. implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License
8. for more details.
   #
9. You should have received a copy of the GNU Affero General Public License along with fiware-cygnus. If not, see
10. http://www.gnu.org/licenses/.
    #
11. For those usages not covered by the GNU Affero General Public License please contact with iot_support at tid dot es
    #

cygnus-ngsi.sources = http-source
cygnus-ngsi.sinks =
cygnus-ngsi.channels =

cygnus-ngsi.sources.http-source.type = org.apache.flume.source.http.HTTPSource
cygnus-ngsi.sources.http-source.channels = mysql-channel mongo-channel sth-channel ckan-channel hdfs-channel cartodb-channel postgresql-channel orion-channel postgis-channel elasticsearch-channel
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
cygnus-ngsi.sources.http-source.interceptors.ts.type = timestamp
cygnus-ngsi.sources.http-source.interceptors.nmi.type = com.telefonica.iot.cygnus.interceptors.NGSINameMappingsInterceptor$Builder
cygnus-ngsi.sources.http-source.interceptors.nmi.name_mappings_conf_file = /opt/apache-flume/conf/name_mappings.conf

cygnus-ngsi.sinks.mysql-sink.type = com.telefonica.iot.cygnus.sinks.NGSIMySQLSink
cygnus-ngsi.sinks.mysql-sink.channel = mysql-channel
#cygnus-ngsi.sinks.mysql-sink.enable_encoding = false
#cygnus-ngsi.sinks.mysql-sink.enable_name_mappings = false
#cygnus-ngsi.sinks.mysql-sink.enable_lowercase = false
#cygnus-ngsi.sinks.mysql-sink.data_model = dm-by-entity
cygnus-ngsi.sinks.mysql-sink.mysql_host = iot-mysql
cygnus-ngsi.sinks.mysql-sink.mysql_port = 3306
cygnus-ngsi.sinks.mysql-sink.mysql_username =
cygnus-ngsi.sinks.mysql-sink.mysql_password =
#cygnus-ngsi.sinks.mysql-sink.attr_persistence = row
#cygnus-ngsi.sinks.mysql-sink.attr_native_types = false
#cygnus-ngsi.sinks.mysql-sink.batch_size = 1
#cygnus-ngsi.sinks.mysql-sink.batch_timeout = 30
#cygnus-ngsi.sinks.mysql-sink.batch_ttl = 10
#cygnus-ngsi.sinks.mysql-sink.mysql_options =

cygnus-ngsi.sinks.mongo-sink.type = com.telefonica.iot.cygnus.sinks.NGSIMongoSink
cygnus-ngsi.sinks.mongo-sink.channel = mongo-channel
#cygnus-ngsi.sinks.mongo-sink.enable_encoding = false
#cygnus-ngsi.sinks.mongo-sink.enable_name_mappings = false
#cygnus-ngsi.sinks.mongo-sink.enable_lowercase = false
#cygnus-ngsi.sinks.mongo-sink.data_model = dm-by-entity
#cygnus-ngsi.sinks.mongo-sink.attr_persistence = row
cygnus-ngsi.sinks.mongo-sink.mongo_hosts = iot-mongo:27017
cygnus-ngsi.sinks.mongo-sink.mongo_username =
cygnus-ngsi.sinks.mongo-sink.mongo_password =
cygnus-ngsi.sinks.mongo-sink.mongo_auth_source =
cygnus-ngsi.sinks.mongo-sink.mongo_replica_set =
#cygnus-ngsi.sinks.mongo-sink.db_prefix = sth_
#cygnus-ngsi.sinks.mongo-sink.collection_prefix = sth_
#cygnus-ngsi.sinks.mongo-sink.batch_size = 1
#cygnus-ngsi.sinks.mongo-sink.batch_timeout = 30
#cygnus-ngsi.sinks.mongo-sink.batch_ttl = 10
#cygnus-ngsi.sinks.mongo-sink.data_expiration = 0
#cygnus-ngsi.sinks.mongo-sink.collections_size = 0
#cygnus-ngsi.sinks.mongo-sink.max_documents = 0
#cygnus-ngsi.sinks.mongo-sink.ignore_white_spaces = true

...

1. NGSIPostgreSQLSink configuration
   cygnus-ngsi.sinks.postgresql-sink.type = com.telefonica.iot.cygnus.sinks.NGSIPostgreSQLSink
   cygnus-ngsi.sinks.postgresql-sink.channel = postgresql-channel
   #cygnus-ngsi.sinks.postgresql-sink.enable_encoding = false
   #cygnus-ngsi.sinks.postgresql-sink.enable_name_mappings = false
   #cygnus-ngsi.sinks.postgresql-sink.enable_lowercase = false
   #cygnus-ngsi.sinks.postgresql-sink.data_model = dm-by-entity
   cygnus-ngsi.sinks.postgresql-sink.postgresql_host = iot-postgresql
   cygnus-ngsi.sinks.postgresql-sink.postgresql_port = 5432
   cygnus-ngsi.sinks.postgresql-sink.postgresql_username =
   cygnus-ngsi.sinks.postgresql-sink.postgresql_password =
   #cygnus-ngsi.sinks.postgresql-sink.postgresql_database = postgres
   #cygnus-ngsi.sinks.postgresql-sink.attr_persistence = row
   #cygnus-ngsi.sinks.postgresql-sink.attr_native_types = false
   #cygnus-ngsi.sinks.postgresql-sink.batch_size = 1
   #cygnus-ngsi.sinks.postgresql-sink.batch_timeout = 30
   #cygnus-ngsi.sinks.postgresql-sink.batch_ttl = 10
   #cygnus-ngsi.sinks.postgresql-sink.backend.enable_cache = false
   #cygnus-ngsi.sinks.postgresql-sink.postgresql_options =

...

cygnus-ngsi.channels.mysql-channel.type = com.telefonica.iot.cygnus.channels.CygnusMemoryChannel
cygnus-ngsi.channels.mysql-channel.capacity = 100000
cygnus-ngsi.channels.mysql-channel.transactionCapacity = 10000

cygnus-ngsi.channels.postgresql-channel.type = com.telefonica.iot.cygnus.channels.CygnusMemoryChannel
cygnus-ngsi.channels.postgresql-channel.capacity = 100000
cygnus-ngsi.channels.postgresql-channel.transactionCapacity = 10000

cygnus-ngsi.channels.postgis-channel.type = com.telefonica.iot.cygnus.channels.CygnusMemoryChannel
cygnus-ngsi.channels.postgis-channel.capacity = 100000
cygnus-ngsi.channels.postgis-channel.transactionCapacity = 10000

cygnus-ngsi.channels.mongo-channel.type = com.telefonica.iot.cygnus.channels.CygnusMemoryChannel
cygnus-ngsi.channels.mongo-channel.capacity = 100000
cygnus-ngsi.channels.mongo-channel.transactionCapacity = 10000

...