tomcat - 从 Tomcat 的日志中排除某些请求

Question

我的 Tomcat 访问日志目前充斥着来自负载均衡器的健康检查请求，因此很难真正了解发生了什么。例如，使用 GoAccess 我可以看到一些误导性的统计数据:

Hits      h% Vis.    v%   Bandwidth Mtd Proto    Data
 ----- ------ ---- ----- ----------- --- -------- ----
 46221 81.20%    2 0.02%   30.72 MiB GET HTTP/1.1 /geoserver/index.html
 16     0.03%    1 0.01%   50.23 KiB GET HTTP/1.1 /geoserver/wms?SERVICE=WMS&VERSION=1.1.0&REQUEST=GetMap&FORMAT=image/jpeg.
 16     0.03%    1 0.01%  338.80 KiB GET HTTP/1.1 /geoserver/wms?SERVICE=WMS&VERSION=1.1.0&REQUEST=GetMap&FORMAT=image/png.

日志是使用 Tomcat 的标准创建的 Access Log Valve .阀门应该有一个参数，conditionUnless，我尝试使用它来摆脱所有对 index.html 的请求(这是健康检查的地方去，所以我可以安全地过滤掉所有这些)。

根据文档，conditionUnless:

Turns on conditional logging. If set, requests will be logged only if ServletRequest.getAttribute() is null. For example, if this value is set to junk, then a particular request will only be logged if ServletRequest.getAttribute("junk") == null. The use of Filters is an easy way to set/unset the attribute in the ServletRequest on many different requests.

但我不知道如何使用过滤器来过滤掉对 index.html 的所有请求并在某些内容中标记它们。显然，server.xml 中的以下内容是不够的:

<Valve  className="org.apache.catalina.valves.AccessLogValve" 
        directory="/var/log/tomcat8/accesslogs"
        prefix="node1" suffix=".log"
        pattern="combined"
        renameOnRotate="true"
        conditionUnless="index.html" />

如何排除对 index.html 的所有请求？

Answer 1

您需要创建一个 filter as suggested in tomcat group将属性添加为 doLog

public final class LoggingFilter implements Filter { 

  private FilterConfig filterConfig = null; 

  public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) 
    throws IOException, ServletException { 

    request.setAttribute(filterConfig.getInitParameter("doLog"), "true");         
    chain.doFilter(request, response); 
  } 
  public void destroy() { 
    this.filterConfig = null; 
  } 
  public void init(FilterConfig filterConfig) { 
    this.filterConfig = filterConfig;   
  } 
}

然后使用 conditionIf 检查属性名称

conditionIf="doLog"

conditionIf
Turns on conditional logging. If set, requests will be logged only if ServletRequest.getAttribute() is not null. For example, if this value is set to important, then a particular request will only be logged if ServletRequest.getAttribute("important") != null. The use of Filters is an easy way to set/unset the attribute in the ServletRequest on many different requests.

并在 web.xml 中添加过滤器:

<filter>  
    <filter-name>LoggingFilter</filter-name>  
    <filter-class>com.yourpackage.LoggingFilter</filter-class>  
    <init-param>  
        <param-name>logParam</param-name>  
        <param-value>doLog</param-value>  
    </init-param>  
</filter>  
<filter-mapping>  
    <filter-name>LoggingFilter</filter-name>  
    <url-pattern>/geoserver/*</url-pattern>
    <dispatcher>REQUEST</dispatcher>
    <dispatcher>INCLUDE</dispatcher>
    <dispatcher>FORWARD</dispatcher>
    <dispatcher>ERROR</dispatcher>
</filter-mapping>
<filter-mapping>