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我一直在检查其他人关于 cygnus 配置文件的问题，但我仍然无法让我的工作。

使用“service cygnus start”启动 cygnus 失败。

当我尝试启动服务时，/var/log/cygnus/cygnus.log 处的日志显示：

Warning: JAVA_HOME is not set!
+ exec /usr/bin/java -Xmx20m -Dflume.log.file=cygnus.log -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 -p 8081 -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-0.8.2-jar-with-dependencies.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
log4j:ERROR setFile(null,true) call failed.
java.io.FileNotFoundException: ./logs/cygnus.log (No such file or directory)
    at java.io.FileOutputStream.openAppend(Native Method)
    at java.io.FileOutputStream.<init>(FileOutputStream.java:210)
    at java.io.FileOutputStream.<init>(FileOutputStream.java:131)
    at org.apache.log4j.FileAppender.setFile(FileAppender.java:294)
    at org.apache.log4j.RollingFileAppender.setFile(RollingFileAppender.java:207)
    at org.apache.log4j.FileAppender.activateOptions(FileAppender.java:165)
    at org.apache.log4j.config.PropertySetter.activate(PropertySetter.java:307)
    at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:172)
    at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:104)
    at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:809)
    at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:735)
    at org.apache.log4j.PropertyConfigurator.configureRootCategory(PropertyConfigurator.java:615)
    at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:502)
    at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:547)
    at org.apache.log4j.helpers.OptionConverter.selectAndConfigure(OptionConverter.java:483)
    at org.apache.log4j.LogManager.<clinit>(LogManager.java:127)
    at org.slf4j.impl.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:73)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:242)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:254)
    at org.apache.flume.node.Application.<clinit>(Application.java:58)
Starting an ordered shutdown of Cygnus
Stopping sources
All the channels are empty
Stopping channels
Stopping hdfs-channel (lyfecycle state=START)
Stopping sinks
Stopping hdfs-sink (lyfecycle state=START)

JAVA_HOME 已设置，我认为问题出在配置文件上：

代理_1.conf：

cygnusagent.sources = http-source
cygnusagent.sinks = hdfs-sink 
cygnusagent.channels = hdfs-channel

#=============================================
 # source configuration
 # channel name where to write the notification events
cygnusagent.sources.http-source.channels = hdfs-channel
 # source class, must not be changed
cygnusagent.sources.http-source.type = org.apache.flume.source.http.HTTPSource
 # listening port the Flume source will use for receiving incoming notifications
cygnusagent.sources.http-source.port = 5050
 # Flume handler that will parse the notifications, must not be changed
cygnusagent.sources.http-source.handler = com.telefonica.iot.cygnus.handlers.OrionRestHandler
 # URL target
cygnusagent.sources.http-source.handler.notification_target = /notify
 # Default service (service semantic depends on the persistence sink)
cygnusagent.sources.http-source.handler.default_service = def_serv
 # Default service path (service path semantic depends on the persistence sink)
cygnusagent.sources.http-source.handler.default_service_path = def_servpath
 # Number of channel re-injection retries before a Flume event is definitely discarded (-1 means infinite retries)
cygnusagent.sources.http-source.handler.events_ttl = 10
 # Source interceptors, do not change
cygnusagent.sources.http-source.interceptors = ts gi
 # TimestampInterceptor, do not change
cygnusagent.sources.http-source.interceptors.ts.type = timestamp
 # GroupinInterceptor, do not change
cygnusagent.sources.http-source.interceptors.gi.type = com.telefonica.iot.cygnus.interceptors.GroupingInterceptor$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
cygnusagent.sources.http-source.interceptors.gi.grouping_rules_conf_file = /usr/cygnus/conf/grouping_rules.conf

# ============================================
 # OrionHDFSSink configuration
 # channel name from where to read notification events
cygnusagent.sinks.hdfs-sink.channel = hdfs-channel
 # sink class, must not be changed
cygnusagent.sinks.hdfs-sink.type = com.telefonica.iot.cygnus.sinks.OrionHDFSSink
 # Comma-separated list of FQDN/IP address regarding the HDFS Namenode endpoints
 # If you are using Kerberos authentication, then the usage of FQDNs instead of IP addresses is mandatory
cygnusagent.sinks.hdfs-sink.hdfs_host = cosmos.lab.fiware.org
 # port of the HDFS service listening for persistence operations; 14000 for httpfs, 50070 for webhdfs
cygnusagent.sinks.hdfs-sink.hdfs_port = 14000
 # username allowed to write in HDFS
cygnusagent.sinks.hdfs-sink.hdfs_username = MYUSERNAME
 # OAuth2 token
cygnusagent.sinks.hdfs-sink.oauth2_token = MYTOKEN
 # how the attributes are stored, either per row either per column (row, column)
cygnusagent.sinks.hdfs-sink.attr_persistence = column
 # Hive FQDN/IP address of the Hive server
cygnusagent.sinks.hdfs-sink.hive_host = cosmos.lab.fiware.org
 # Hive port for Hive external table provisioning
cygnusagent.sinks.hdfs-sink.hive_port = 10000
 # Kerberos-based authentication enabling
cygnusagent.sinks.hdfs-sink.krb5_auth = false
 # Kerberos username
cygnusagent.sinks.hdfs-sink.krb5_auth.krb5_user = krb5_username
 # Kerberos password
cygnusagent.sinks.hdfs-sink.krb5_auth.krb5_password = xxxxxxxxxxxxx
 # Kerberos login file
cygnusagent.sinks.hdfs-sink.krb5_auth.krb5_login_conf_file = /usr/cygnus/conf/krb5_login.conf
 # Kerberos configuration file
cygnusagent.sinks.hdfs-sink.krb5_auth.krb5_conf_file = /usr/cygnus/conf/krb5.conf

#=============================================
 # hdfs-channel configuration
 # channel type (must not be changed)
cygnusagent.channels.hdfs-channel.type = memory
 # capacity of the channel
cygnusagent.channels.hdfs-channel.capacity = 1000
 # amount of bytes that can be sent per transaction
cygnusagent.channels.hdfs-channel.transactionCapacity = 100

和 cygnus_instance_1.conf：

CYGNUS_USER=cygnus

CONFIG_FOLDER=/usr/cygnus/conf

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

# Name of the agent. The name of the agent is not trivial, since it is the base for the Flume parameters 
# naming conventions, e.g. it appears in .sources.http-source.channels=...
AGENT_NAME=cygnusagent

# Name of the logfile located at /var/log/cygnus.
LOGFILE_NAME=cygnus.log

# Administration port. Must be unique per instance
ADMIN_PORT=8081

# Polling interval (seconds) for the configuration reloading
POLLING_INTERVAL=30

我希望这是一个简单的问题。如果需要更多信息，请告诉我。

顺便说一句，我按照此链接上的说明获得了我的令牌。访问 COSMOS 全局实例不应该有密码字段吗？还是令牌足够？

谢谢

4

2 回答 2

2

虽然很长时间没有在 cygnus 上工作，但是您提到的问题是在启动 Cygnus 时，您的应用程序无法找到日志目录，因此服务无法启动。{这是配置问题。}

为避免同样的情况，您可以执行一些可能有所帮助的步骤。

  1. 如果还可以访问日志目录，则从 cygnus 的主目录启动 cygnus 服务。 例如，假设您的 cygnus 主目录是“/usr/local/cygnus”并记录“/usr/local/cygnus/logs/”，然后从 cygnus 主目录启动 cygnus 服务它自己 “sh /usr/local/cygnus/ bin/cygnus start"，这些将工作，因为日志目录将由 cygnus "./log/cygnus.log" 访问

  2. 在 ./~bashprofile 中添加 Cygnus Home 并更新执行导出，因此这些将为 Cygnus Home 目录设置 Classpath，这将有助于访问日志位置，以便您可以使用“service cygnus start”启动服务。

  3. 通过提及日志位置的完整路径（例如“/usr/local/cygnus/logs/”）来更新 cygnus 日志记录的配置并启动服务。

于 2015-08-19T07:16:28.483 回答
1

由于我不得不再次解决这个问题，我将借此机会说出我是如何做到的。

基本上 log4j 需要配置。在cygnus 存储库的安装和配置说明的这一部分中，您可以找到有关它的更多详细信息。

就我而言，我只使用一个 cygnus 实例来写入 HDFS。为了让 cygnus 正常工作，我将CYGNUS_PATH/conf/log4j.properties上的以下行编辑为存在cygnus.log文件的绝对路径：

flume.log.dir=/usr/cygnus/logs

/user/cygnus 是我的 CYGNUS_PATH。

所以现在 log4j 会将 cygnus 的操作写入/usr/cygnus/logs/cygnus.log。当然，您可以随意将日志文件放在您想要的任何位置，只要您在此属性文件上正确引用它即可。

希望这可以帮助任何有类似问题的人。

于 2015-09-03T15:28:25.803 回答