6.6. 覆盖日志文件的默认路径

流程

1. 要覆盖 nova-compute 服务的默认路径，请在配置文件中添加 NovaComputeLoggingSource 参数的路径。

    NovaComputeLoggingSource:
         tag: openstack.nova.compute
         path: /some/other/path/nova-compute.log

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   tag 和 path 属性是 < service_name>LoggingSource 参数的必要 元素。在每个服务上，定义标签和路径，默认派生了其余值。

2. 您可以修改特定服务的格式。这会直接传递给 Fluentd 配置。LoggingDefaultFormat 参数的默认格式为 /(?<time>\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}.\d+) (<pid>\d+) (<priority>\S+) (<message>.*)$/使用以下语法：

   <service_name>LoggingSource:
       tag: <service_name>.tag
       path: <service_name>.path
       format: <service_name>.format

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   以下片段是一个更复杂的转换示例：

    ServiceLoggingSource:
       tag: openstack.Service
       path: /var/log/containers/service/service.log
       format: multiline
       format_firstline: '/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}.\d{3} \d+ \S+ \S+ \[(req-\S+ \S+ \S+ \S+ \S+ \S+|-)\]/'
       format1: '/^(?<Timestamp>\S+ \S+) (?<Pid>\d+) (?<log_level>\S+) (?<python_module>\S+) (\[(req-(?<request_id>\S+) (?<user_id>\S+) (?<tenant_id>\S+) (?<domain_id>\S+) (?<user_domain>\S+) (?<project_domain>\S+)|-)\])? (?<Payload>.*)?$/'

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