Exclude certain requests from Tomcat's log

Question

My Tomcat access log is currently cluttered with health check requests from a load balancer, so it\'s rather hard to actually understand what\'s going on. F

Answer 1

You need to create a filter as suggested in tomcat group that adds an attribute as 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;   
  } 
}

and then check attribute name using conditionIf

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.

and add filter to web.xml:

<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>