Using JBoss EAP 6.4 (AS 7.x I guess).
By default, JBoss' logging service is capturing all application output to stdout (and presumably stderr) and wrapping it in its own log4j-based logs. When running locally I want to totally disable this (annoying) feature1, but the references I've found on the Interwebs all either don't work or are for older versions of JBoss. I've tried excluding every possible logging framework in the jboss-deployment-structure configuration, passing -Dorg.jboss.logging.per-deployment=false as a system property, but still JBoss captures stdout.
How can I disable it in this version of JBoss?
[1] If you must know the reason, it's because we have detailed logging configuration via logback and when running locally in an IDE want to be able to see and control that log output in the console without JBoss' logging service getting in the way.
It's hard-coded in the entry points to capture stdout and stderr. This is done so both streams are written to the defined log handlers. Because of this there is no real clean way around it. However there are ways to make it at least look a little better.
You can create a new console-handler and define a stdout logger to ensure only the simple message is written though.
Here are some CLI commands to configure a logger named stdout to just print the message it receives.
/subsystem=logging/pattern-formatter=plain-formatter:add(pattern="%s")
/subsystem=logging/console-handler=plain-console:add(autoflush=true, target=System.out, named-formatter=plain-formatter)
/subsystem=logging/logger=stdout:add(use-parent-handlers=false, handlers=[plain-console])
Note: It could be my test logback.xml configuration, but I had to use a pattern of %s%n for the plain-formatter.
The only other option I can think of would be to write your own logback ConsoleAppender that creates an output stream based on java.io.FileOutputStream.out rather than using System.out.
Related
I have 4 appllications (ear) on my WAS. I need them to write in SystemOut.log some sign. I.e each application must write to log file its own sign. For example:
[16.01.17 3:50:05:592 GMT+05:00] ADMIN 000005e0 SubsystemMess I com.docflow.core.integration.jms.SubsystemMessageListener onMessage_aroundBody0 Subsystem integration message ID:f5392a5ec3b3f41502095b00110a134f0000000000000001 of type DP_EKS_BANK_GUARANTEE_RECEIVED process finished
Here ADMIN is sign of the application.
How i can do that?
It's not possible to adjust the default logging format in this way. Your options would be to use java.util.logging.Logger with a particular name (to replace the "SubsystemMess" part) or to use a separate logging package and configure it to log to a separate file.
Look at log4j and configuring each app's log4j to go to a different file.
Log4j's file appender can be configured to also include timestamp and more.
The only catch is you can't configure it from WAS's admin console then.
Note that java.util.Logger writes to the trace.log. If you use a different logger name, it will list as such in the same trace.log file. Upside is you can now configure it from the admin console.
One potential solution could be to switch to HPEL logging. Then you could query log entries for your given application using logviewer, like:
logViewer.sh -includeExtensions appName=PlantsByWebSphere
I know that it is not exactly what you are looking for, but maybe it will be sufficient for your needs.
I have a web application, which uses log4j and slf4j as facade for logging. Logging is configured not from log4j.properties file, but from Java code.
Application is running on three different machines using Websphere Application Server.
Issue is that on two instances logging works as expected. But on the third one nothing is written in my logfile. Output goes to SystemErr.log instead (there are messages of ERROR and INFO levels).
Initially I thought that something is with Websphere server configuration, but later I found this link http://www.webagesolutions.com/knowledgebase/waskb/waskb004/ which says that such situation can be when log4j.properties can not be read.
But I am not using property file for this. And configuration form Java works OK on other two instances.
Any ideas what can be the issue?
Thank you in advance!
Please make sure that no alternative slf4j binding (such as simple) exists on the CLASSPATH.
I couldn't figure out from searching Stackoverflow/Google if this has been answered or if it's even possible to do. I've only found this
https://mina.apache.org/mina-project/userguide/ch12-logging-filter/ch12-logging-filter.html which suggests that "Once configured properly, you can continue to configure the actual logging framework you chose (e.g. modifying log4j.properties)." But I didn't know how to do that for my specific java.util.logging setup, described below.
Setup:
I have a program that uses java.util.logging to output logging to FileHandler and ConsoleHandler. I'm using the Apache SSHD library in my program, from which I am including only [sshd-core-0.14.0.jar, slf4j-api-1.6.4.jar, slf4j-jdk14-1.6.4.jar] specifically.
Goal:
Logging from SSHD is currently output to the console, but not to my log file. I want to configure SSHD to route its logging to my file and/or console as I specify from within my program.
Is this even possible? Do I need to switch to another logging mechanism? I didn't think logging configuration would be this complicated and take up a not insignificant amount of time/effort.
I just read the gwt-log Getting Started guide and found it very helpful, however I have a few questions surrounding the Loggers:
The SystemLogger sends output to System.err and System.out - in the context of a client-side web app running inside a browser, where will this output eventually go? Browser logs?
Does RemoteLogger depend on JUL or log4j? I have a homegrown slf4j binding that I like to use for all my Java backends, and would like to use it, but not sure if RemoteLogger will be incompatible with it?
Is it possible to have RemoteLogger hit my own LoggingServiceServlet, which could then translate the log messages coming in on the HttpServletRequest into logging statements that are compatible with my custom slf4j binding? If so, what might this config look like?
Thanks in advance!
In this link, you have a most updated documentation about the GWT logging framework
Answers to your questions:
#1 Yes it works in client side, but only when running the app in DevMode (not in production nor superdev mode). Look for the log lines in the DevMode window, or in your terminal output if you run dev-mode from the command-line.
#2 It depends on java.util.logging, you can change it though (see #3)
#3 Yes you can change the logging framework extending the RemoteLoggingServiceImpl and overriding the logOnServer(LogRecord lr) method.
Im using ubuntu and tomcat6 for my server. When im calling a servlet or a jsp page, the "logger" (System.out.println()) logs into the syslog of the server /var/log/syslog. How can i change this, that the server will write in a own log file like the catalina.out?
The problem is that there are no line breaks in my syslog (i used \n in the system.out), so it looks really "dirty".
You would want to look into log4j
http://logging.apache.org/log4j/1.2/manual.html
and set up a log4j.properties that will do what you want it to do.
Generally, you do not want to use System.out.println().. everything should go through log4j. So like
logger.debug("whatever i am debugging");
and
logger.warn("danger!");
This way you can change your log4j level and turn off debugging spam, without having to remove it from your code.
Several ways:
Change the destination of the stdout using System#setOut() and eventually also the stderr.
System.setOut(new PrintStream(new File("/new.log")));
This is however not recommended. Don't do it. Use a logger.
Configure the webapp context to swallow the output. Set the swallowOutput of the <Context> element to true. This will redirect all stdout/stderr to Tomcat's logfile.
<Context swallowOutput="true">
Still not really recommended. Using stdout/stderr instead of logger is a poor practice. Also, this will clutter Tomcat's logfile with webapp-specific logs. But if this is exactly what you're after...
Replace all stdout/stderr calls by a fullworthy logger like the (currently legacy) log4j or its successor slf4j which gives you a high degree of freedom in configuring the logged information, logging destination, logging format, etcetera.