重要提示：在执行以下任何命令之前，请备份您的 Cygnus 配置，因为它们在稍作更改后仍然有效。
遗憾的是，可用的 Cygnus 版本不支持 OAuth2。到目前为止。您必须升级到最新的0.8.2，它允许通过此 OrionHDFSSink 参数配置令牌：
<your_agent_nam>.sinks.<your_hdfs_sink_name>.oauth2_token = <token>
升级到 Cygnus 0.8.2 就像从 FIWARE repo 安装一样简单：
$ (sudo) yum clean all # just to clean the yum cache
$ (sudo) yum list cygnus # this will show you 0.82 is available
$ (sudo) sudo rpm -e -vv --allmatches --nodeps --noscripts --notriggers cygnus # this is needed if you have installed a version < 0.8.0
$ (sudo) yum install cygnus # this installs 0.8.2
请记住，FIWARE repo 是通过编辑设置的/etc/yum.repos.d/fiware.repo（很可能您已经拥有它）：
[Fiware]
name=FIWARE repository
baseurl=http://repositories.testbed.fi-ware.eu/repo/rpm/x86_64/
gpgcheck=0
enabled=1
在下面的示例中，我们将从 0.7.0 版本迁移到最新的 0.8.2：
$ sudo yum clean all
Loaded plugins: fastestmirror, security
Cleaning repos: ...
Cleaning up Everything
Cleaning up list of fastest mirrors
$ sudo yum list cygnus
Loaded plugins: fastestmirror, security
Determining fastest mirrors
* base: sunsite.rediris.es
* epel: ftp.cica.es
* extras: sunsite.rediris.es
* updates: sunsite.rediris.es
...
Installed Packages
cygnus.x86_64 0.7.0-g4cddd26 @Fiware
Available Packages
cygnus.x86_64 0.8.2-0.g7353160 Fiware
$ sudo rpm -e -vv --allmatches --nodeps --noscripts --notriggers cygnus
D: loading keyring from pubkeys in /var/lib/rpm/pubkeys/*.key
D: couldn't find any keys in /var/lib/rpm/pubkeys/*.key
D: loading keyring from rpmdb
...
D: closed db index /var/lib/rpm/Name
D: closed db index /var/lib/rpm/Packages
D: closed db environment /var/lib/rpm
$ sudo yum install cygnus
Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile
* base: sunsite.rediris.es
* epel: ftp.cica.es
* extras: sunsite.rediris.es
* updates: sunsite.rediris.es
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package cygnus.x86_64 0:0.7.0-g4cddd26 will be updated
---> Package cygnus.x86_64 0:0.8.2-0.g7353160 will be an update
--> Finished Dependency Resolution
Dependencies Resolved
==============================================================================================================================================================
Package Arch Version Repository Size
==============================================================================================================================================================
Updating:
cygnus x86_64 0.8.2-0.g7353160 Fiware 94 M
Transaction Summary
==============================================================================================================================================================
Upgrade 1 Package(s)
Total download size: 94 M
Is this ok [y/N]:
Downloading Packages:
cygnus-0.8.2-0.g7353160.x86_64.rpm | 94 MB 00:03
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Updating : cygnus-0.8.2-0.g7353160.x86_64 1/2
[INFO] Creating cygnus user
[INFO] Creating log directory
Done
Cleanup : cygnus-0.7.0-g4cddd26.x86_64 2/2
[INFO] Uninstall the cygnus
Stopping Cygnus chatrooms... [ OK ]
[INFO] Deleting links
rm: no se puede borrar «/etc/cygnus/flume.conf»: No existe el fichero o el directorio
[INFO] Removing application log files
[INFO] Deleting the cygnus folder
[INFO] Deleting the cygnus user
Done
Updated:
cygnus.x86_64 0:0.8.2-0.g7353160
Complete!
为了检查你有正确的版本，你可以做几件事。例如，使用rpm命令：
$ rpm -qa | grep cygnus
cygnus-0.8.2-0.g7353160.x86_64
或使用yum list：
$ (sudo) yum list cygnus
Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile
* base: sunsite.rediris.es
* epel: ftp.cica.es
* extras: sunsite.rediris.es
* updates: sunsite.rediris.es
Installed Packages
cygnus.x86_64 0.8.2-0.g7353160 @Fiware
或者只是检查oauth2_token参数是否存在；）
$ cat /usr/cygnus/conf/agent.conf.template |grep oauth2_token
cygnusagent.sinks.hdfs-sink.oauth2_token = xxxxxxxx
重要提示：备份您的 Cygnus 配置，因为它们在稍作更改后仍然有效：
- 请注意，如果您使用的 Cygnus 版本 < 0.8.0，Java 包已更改。现在，他们不再
es.tid.fiware.fiwareconnectors.cygnus.etc只是com.telefonica.iot.cygus.etc。
- 从 Cygnus 0.8.1 开始，配置文件
matching_table.conf（类似 CSV 的内容）现在被命名为grouping_rules.conf（与类似 CSV 的版本具有相同语义的类似 JSON 的内容）。