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:

  
    LoggingFilter  
    com.yourpackage.LoggingFilter  
      
        logParam  
        doLog  
      
  
  
    LoggingFilter  
    /geoserver/*
    REQUEST
    INCLUDE
    FORWARD
    ERROR