我已按照本教程安装 NGSI，将 cygnus 从版本 0.13 更新到 1.7.0：
https://github.com/telefonicaid/fiware-cygnus/tree/master/cygnus-ngsi https://github.com/telefonicaid/fiware-cygnus/tree/master/cygnus-ngsi
订阅出错
[
{
"id": "59d38a92dbaa1e477aef9c00",
"description": "A subscription to get info about pruebas",
"status": "failed",
"subject": {
"entities": [
{
"id": "pruebas",
"type": "pruebas"
}
],
"condition": {
"attrs": [
"pressure"
]
}
},
"notification": {
"timesSent": 2,
"lastNotification": "2017-10-03T13:03:43.00Z",
"attrs": [
"temperature",
"pressure"
],
"attrsFormat": "legacy",
"http": {
"url": "http://localhost:5050/notify"
},
"lastFailure": "2017-10-03T13:03:43.00Z"
}
}
]
查看 contextBroker 日志会显示以下内容：
$pp[328]:notificationError | msg=Raising alarm NotificationError http://localhost:5050/notify: (curl_easy_perform failed: Couldn't connect to server)
我有 contextBroker 与 cygnus 在同一台机器上，所以我已经尝试更改服务器和本地主机的通知 ip，但它对任何一个都不起作用。
如果它适用于 localhost，则使用版本 0.13。
可能是什么问题呢？
它甚至不会访问 cygnus 配置文件，因为它无法从 contextBroker 访问。
问候并谢谢你。
EDIT1:
我使用 fiwareLab 机器进行了测试，并删除了使用 YUM REMOVE CYGNUS 预安装的 cygnus 0.13。然后我用 YUM INSTALL CYGNUS-NGSI 安装了 1.7，并安装了两个包 ngsi 和 common。
使用 service cygnus restart 重新启动服务表明以下内容：
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
cygnus-ngsi x86_64 1.7.1-0.g9df0d4d fiware 74 M
Installing for dependencies:
cygnus-common x86_64 1.7.1-0.g9df0d4d fiware 128 M
Transaction Summary
================================================================================
Install 2 Package(s)
Total size: 202 M
Installed size: 223 M
Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
[INFO] Creating cygnus user
Installing : cygnus-common-1.7.1-0.g9df0d4d.x86_64 1/2
[INFO] Creating log directory
Done
Installing : cygnus-ngsi-1.7.1-0.g9df0d4d.x86_64 2/2
Verifying : cygnus-common-1.7.1-0.g9df0d4d.x86_64 1/2
Verifying : cygnus-ngsi-1.7.1-0.g9df0d4d.x86_64 2/2
Installed:
cygnus-ngsi.x86_64 0:1.7.1-0.g9df0d4d
Dependency Installed:
cygnus-common.x86_64 0:1.7.1-0.g9df0d4d
Complete!
[centos@centos6 cygnus]$ sudo service cygnus restart
There aren't any instance of Cygnus running [ OK ]
Starting Cygnus 1... [ OK ]
当我在我的服务器上尝试时，我执行相同的步骤，但是在执行服务 cygnus restart 时，有两个 cygnus，即 1 和 2，而不是像 vuesta 机器中只有一个，因此表明端口 8081 已在使用中。
Dependencias resueltas
============================================================================================================================================================================
Paquete Arquitectura Versión Repositorio Tamaño
============================================================================================================================================================================
Instalando:
cygnus-ngsi x86_64 1.7.1-0.g9df0d4d fiware 74 M
Instalando para las dependencias:
cygnus-common x86_64 1.7.1-0.g9df0d4d fiware 128 M
Resumen de la transacción
============================================================================================================================================================================
Instalar 2 Paquete(s)
Tamaño total de la descarga: 202 M
Tamaño instalado: 223 M
Está de acuerdo [s/N]:s
Descargando paquetes:
(1/2): cygnus-common_hadoopcore_1.2.1-1.7.1-0.g9df0d4d.x86_64.rpm | 128 MB 00:14
(2/2): cygnus-ngsi-1.7.1-0.g9df0d4d.x86_64.rpm | 74 MB 00:07
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 8.9 MB/s | 202 MB 00:22
Ejecutando el rpm_check_debug
Ejecutando prueba de transacción
La prueba de transacción ha sido exitosa
Ejecutando transacción
[INFO] Creating cygnus user
Instalando : cygnus-common-1.7.1-0.g9df0d4d.x86_64 1/2
[INFO] Creating log directory
Done
Instalando : cygnus-ngsi-1.7.1-0.g9df0d4d.x86_64 2/2
Verifying : cygnus-common-1.7.1-0.g9df0d4d.x86_64 1/2
Verifying : cygnus-ngsi-1.7.1-0.g9df0d4d.x86_64 2/2
Instalado:
cygnus-ngsi.x86_64 0:1.7.1-0.g9df0d4d
Dependencia(s) instalada(s):
cygnus-common.x86_64 0:1.7.1-0.g9df0d4d
¡Listo!
[root@UAL-IoF2020 conf]# ls
agent_1.conf agent_ngsi.conf.template cygnus_instance_2.conf grouping_rules_2.conf krb5_login.conf README-cygnus-common.md
agent_3.conf cartodb_keys.conf.template cygnus_instance.conf.template grouping_rules.conf.template log4j.properties README-cygnus-ngsi.md
agent.conf.template cygnus_instance_1.conf flume-env.sh.template krb5.conf.template name_mappings.conf.template
[root@UAL-IoF2020 conf]# service cygnus restart
There aren't any instance of Cygnus running [ OK ]
Starting Cygnus 1... [ OK ]
Starting Cygnus 2... [ OK ]
[root@UAL-IoF2020 conf]#
是否有可能这就是问题所在，并且无法识别我的 NGSI 并且占用了 8081 的公共空间？或者这是正常的吗？
登录天鹅座：
time=2017-10-03T21:51:09.326Z | 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)
time=2017-10-03T21:51:09.381Z | lvl=WARN | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=warn | msg=org.mortbay.log.Slf4jLog[76] : failed [email protected] /cdn-cgi/l/email-protection:8081: java.net.BindException: La dirección ya se está usando
time=2017-10-03T21:51:09.381Z | lvl=WARN | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=warn | msg=org.mortbay.log.Slf4jLog[76] : failed Server@52992ace: java.net.BindException: La dirección ya se está usando
time=2017-10-03T21:51:09.381Z | lvl=FATAL | corr= | trans= | srv= | subsrv= | comp=cygnusagent | op=run | msg=com.telefonica.iot.cygnus.http.JettyServer[90] : Fatal error running the Management Interface. Details=La dirección ya se está usando
EDIT2
我已经解决了两个天鹅座的问题，创建了两个agent_1和agent_2。我已经删除了其中之一，并且已经执行 service cygnus restart 时只出现了一个 cygnus。我们正在变得更好。
但我的订阅仍然遇到同样的问题：
contextBroker 日志表明：
msg = Raising alarm NotificationError http: // localhost: 5050 / notify: (curl_easy_perform failed: could not connect to server)
当我尝试时：
[root @ UAL-IoF2020 conf] # netstat -np | grep 5050
我不觉得有什么。
当我启动这个时：
[root @ UAL-IoF2020 conf] # netstat -np | grep 1026
tcp 0 0 150.XXX.XXX.XXX:1026 XXX.XXX.XXX.XXX:50348 ESTABLISHED 5169 / contextBroker
我正在尝试启动您的页面测试。
./notification-json-simple.sh http: // localhost: 5050 / notify myservice myservicepath
并给我以下错误：
[root @ UAL-IoF2020 ngsi-examples] # ./notification-json-simple.sh http: // localhost: 5050 / notify myservice myservicepath
* About to connect () to localhost port 5050 (# 0)
* Trying :: 1 ... Connection refused
* Trying 127.0.0.1 ... Connection refused
* could not connect to host
* Closing connection # 0
curl: (7) could not connect to host
给人的印象是，在 5050 中我没有什么可听的。
有什么线索吗？
cygnus-ngsi.sources = http-source
cygnus-ngsi.sinks = mysql-sink
cygnus-ngsi.channels = mysql-channel
#=============================================
# source configuration
# channel name where to write the notification events
cygnus-ngsi.sources.http-source.channels = mysql-channel
# source class, must not be changed
cygnus-ngsi.sources.http-source.type = org.apache.flume.source.http.HTTPSource
# listening port the Flume source will use for receiving incoming notifications
cygnus-ngsi.sources.http-source.port = 5050
# Flume handler that will parse the notifications, must not be changed
cygnus-ngsi.sources.http-source.handler = com.telefonica.iot.cygnus.handlers.NGSIRestHandler
# URL target
cygnus-ngsi.sources.http-source.handler.notification_target = /notify
# default service (service semantic depends on the persistence sink)
cygnus-ngsi.sources.http-source.handler.default_service = default
# default service path (service path semantic depends on the persistence sink)
cygnus-ngsi.sources.http-source.handler.default_service_path = /
# source interceptors, do not change
cygnus-ngsi.sources.http-source.interceptors = ts gi
# TimestampInterceptor, do not change
cygnus-ngsi.sources.http-source.interceptors.ts.type = timestamp
# GroupingInterceptor, do not change
cygnus-ngsi.sources.http-source.interceptors.gi.type = com.telefonica.iot.cygnus.interceptors.NGSIGroupingInterceptor$Builder
# Grouping rules for the GroupingInterceptor, put the right absolute path to the file if necessary
# see the doc/design/interceptors document for more details
cygnus-ngsi.sources.http-source.interceptors.gi.grouping_rules_conf_file = /usr/cygnus/conf/grouping_rules.conf
