Linux has "auditd" tool to log file system changes: https://www.redhat.com/sysadmin/configure-linux-auditing-auditd
-Harri -----Original Message----- From: Subodh Joshi <subodhcjosh...@gmail.com> Sent: perjantai 22. maaliskuuta 2024 7.36 To: Tomcat Users List <users@tomcat.apache.org> Subject: Re: Tomcat Internal Architect for JSP compilation? [Et saa yleensä sähköpostia subodhcjosh...@gmail.com. Lisätietoja siitä, miksi tämä on tärkeää, on osoitteessa https://aka.ms/LearnAboutSenderIdentification ] Hi Chris Thanks for your response. So i added below properties in application.properties file > spring.mvc.cache-control.cache-allowed=false > > and then Deleted the /tmp/tomcat directory . So now when i restart the server A.jsp only fail with 500 error (ClassNotFoundException) as this is first page which i was trying to load, rest JSP pages working fine without any issue . Why i am doing this exercise? In our some of the deployed linux environment many clients are complaining about this issue , We tried to monitor who actually deleting these /tmp/tomcat folder but still we are not able to figure it out and we are not able to reproduce it . So i have to do reproduce it manually deleting the /tmp/tomcat directory. thanks & regards On Thu, Mar 21, 2024 at 7:24 PM Christopher Schultz < ch...@christopherschultz.net> wrote: > Subudh, > > On 3/21/24 07:32, Subodh Joshi wrote: > > Expert, > > > > Recently i came across a issue and i was getting no clue what was > > going > on > > wrong with the Application. > > > > So here is the issue , we were getting following issue in our web > > application(Springboot+Embedded Tomcat) which is deployed into Linux > machine > > > > java.lang.ClassNotFoundException: > >> org.apache.jsp.WEB_002dINF.jsp.ImportTab_jsp > >> at > >> java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445) > >> at > >> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:129) > >> at > >> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:58) > >> at > >> > org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultIns > tanceManager.java:151) > >> at > >> > org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapp > er.java:189) > >> at > >> > org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper. > java:410) > >> at > >> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:380) > >> at > >> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:328) > >> at > jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658) > >> at > >> > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appli > cationFilterChain.java:205) > >> at > >> > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFi > lterChain.java:149) > >> at > >> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) > >> at > >> > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appli > cationFilterChain.java:174) > >> at > >> > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFi > lterChain.java:149) > >> at > >> > org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRe > questFilter.java:110) > >> at > >> > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appli > cationFilterChain.java:174) > >> at > >> > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFi > lterChain.java:149) > >> at > >> > org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFi > lter(CompositeFilter.java:108) > >> at > >> > org.springframework.security.web.FilterChainProxy.lambda$doFilterInter > nal$3(FilterChainProxy.java:231) > >> at > >> > org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d > oFilter(FilterChainProxy.java:365) > >> at > >> > org.springframework.security.web.access.intercept.AuthorizationFilter. > doFilter(AuthorizationFilter.java:100) > >> at > >> > org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d > oFilter(FilterChainProxy.java:374) > >> at > >> > org.springframework.security.web.access.ExceptionTranslationFilter.doF > ilter(ExceptionTranslationFilter.java:126) > >> at > >> > org.springframework.security.web.access.ExceptionTranslationFilter.doF > ilter(ExceptionTranslationFilter.java:120) > >> at > >> > org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d > oFilter(FilterChainProxy.java:374) > >> at > >> > org.springframework.security.web.authentication.AnonymousAuthenticatio > nFilter.doFilter(AnonymousAuthenticationFilter.java:100) > >> at > >> > org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d > oFilter(FilterChainProxy.java:374) > >> at > >> > org.springframework.security.web.servletapi.SecurityContextHolderAware > RequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:17 > 9) > >> at > >> > org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d > oFilter(FilterChainProxy.java:374) > >> at > >> > org.springframework.security.web.savedrequest.RequestCacheAwareFilter. > doFilter(RequestCacheAwareFilter.java:63) > >> at > >> > org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d > oFilter(FilterChainProxy.java:374) > >> at > >> > com.comptel.catalog.support.filter.OperationClientRestFilter.doFilter( > OperationClientRestFilter.java:86) > >> at > >> > org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d > oFilter(FilterChainProxy.java:374) > >> at > >> > com.comptel.catalog.support.filter.JwtSecurityChainFilter.doFilter(Jwt > SecurityChainFilter.java:100) > >> at > >> > org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d > oFilter(FilterChainProxy.java:374) > >> > > > > but how to reproduce this issue we were not able to get any clue. > > > > But Recently i got to know how to reproduce this issue > > 1- Start the web-application. > > 2- Tomcat will create a directory under /tmp/tomcat.*/.././...... > > 3- Now access web-application through browser. > > 4- But dont access all JSP pages. > > 5- Suppose application have A,B,C,D.jsp pages . > > 6- User accesses A,B.jsp only > > 7- Now user or any cron job deleted /tmp/tomcat directory > > Don't do that. > > > 8- Now user click on C.jsp it is throwing above given exception. > > 9- Now click on D.jsp it will work fine as tomcat will create > > /tmp/tomcat ..... directory again. > > 10. But C.jsp which was failed with 500 error will never come upto > > the > time > > tomcat will not start. > > > > Can someone please explain how tomcat works here and why it throws > > an exception and wont allow that jsp page to come up without restart? > > Tomcat is caching resources and does not expect another process to > come around and delete its files. I'm not sure exactly why the > C.jsp/C.class file ends up getting "stuck" while D.jsp/D.class does not. > > You vould try setting cachingAllowed="false" in your <Resources> > element in META-INF/context.xml (or embedded equivalent) to disable caching. > Performance will likely suffer, but perhaps it will reolve this issue. > > Why not just _stop deleting Tomcat's work directory_? > > -chris > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > -- Subodh Chandra Joshi subodh1_josh...@yahoo.co.in http://www.trendsinnews.com/ --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
