syslog-ng 系列连载-12 ：全局对象

2.4. Global objects

The syslog-ng application uses the following objects:

# 注释 ：syslog-ng 应用程序使用下面的对象

#     -）1、souce driver ：一个通信方法，用于接收日志信息。syslog-ng 能够通过 TCP/IP 从一个远程的主机接受日志，或者从一个文件读取日志

#     -）2、source  ：就是一系列已经配置好的 source driver 的集合

#     -）3、Destination driver ：一种通信的手段，用于发送日志消息。

#     -）4、Destination ：一系列已经配置好的 destination driver 的集合

#     -）5、Filter ：一个用于选择消息的表达式。

#     -）6、log path ：把多个 sources、filters、destinations 组合在一起。也称为 log statement 。它对到达 souces 的所有消息进行检查，对匹配所有 filter 的消息发送到指定的 destination

#     -）7、Template ：一个模版就是用户自定义的结构，它可以用于重建日志消息或者自动生成文件名。例如一个模版可以自动往每个消息中添加时间和主机名。

#    -）8、option ：选先个可以用于设置 syslog-ng 的全局表现。

• Source driver: A communication method used to receive log messages. For example, syslog-ng can receive messages from a remote host via TCP/IP, or read the messages of a local application from a file.

• Source: A named collection of configured source drivers.

• Destination driver: A communication method used to send log messages. For example, syslog-ng can send messages to a remote host via TCP/IP, or write the messages into a file.

• Destination: A named collection of configured destination drivers.

• Filter: An expression to select messages. For example, a simple filter can select the messages received from a specific host.

• Log path: A combination of sources, filters, and destinations: syslog-ng examines all messages arriving to the sources of the log path and sends the messages matching all filters to the defined destinations. Log paths are also called log statements.

• Template: A template is a user-defined structure that can be used to restructure log messages or automatically generate file names. For example, a template can add the hostname and the date to the beginning of every log message.

• Option: Options set global parameters of syslog-ng, like the parameters of name resolution and timezone handling.

For details on the above objects, see .