Do the log files show anything related to the servlet? If you set a secret on a load balancer, all its members will inherit this secret. The server is currently unable to handle the request due to a temporary overloading or maintenance of the server. - HTTP Specification on 503 From time-to-time you'll see this if you're running Tomcat behind Apache, with Apache operating as a proxy. Greenhorn Posts: 17 posted 9 years ago i start the server right-clicking on the system tray java logo and select "Start Defaul Server" Thank You. weblink
Is it possible to create a lighter wallet than simplewallet without giving up a view key? This approach is especially useful, if one has a lot of balanced workers in a load balancer and these workers share most of their properties. There is a well-known class-reloading bug in TC 4.1.27. We include their documentation in case you need to use an older version of mod_jk.
reply_timeoutAJP,SUB0 The parameter is the number of milliseconds to wait for success during a read event. The maximum depth for nesting references is 20. The bad news is that they do what you tell them to do." -- Ted Nelson Madhurt Telang Greenhorn Posts: 10 posted 4 years ago here's the log file...
As a workaround you can use the following steps: Choose a non-standard cookie name using the "session_cookie" attribute. i checked the error log and the file size is too large; could this be the problem of the sudden error on the tomcat server? This feature has been added in jk 1.2.21. Ap_proxy_connect_backend Disabling Worker For (localhost) session_pathLB;jsessionid The name of the path parameter that contains the routing identifier needed for session stickyness.
cache_timeoutconnection_pool_timeout0 This directive has been deprecated since 1.2.16. ping_timeout10000 Timeout in milliseconds used when waiting for the CPong answer of a CPing connection probe. The following bits are allowed: 1: don't recover if Tomcat failed after getting the request 2: don't recover if Tomcat failed after sending the headers to client 4: close the connection to Tomcat, if we detect an error when writing back the answer to the client (browser) 8: always recover requests for HTTP method HEAD (even if Bits 1 or 2 are set) 16: always recover requests for HTTP method GET (even if Bits 1 or 2 are set) This features has been added in jk 1.2.6. http://stackoverflow.com/questions/5643389/tomcat-server-error-503-service-temporarily-unavailable This has been added in version 1.2.33.
disabledactivationfalse This directive has been deprecated since 1.2.19. Tomcat Acceptcount If you explicitly set a route via the "route" attribute, you must set "redirect" to this route of the preferred failover worker and not to its name. The name of the worker can contain only the alphanumeric characters [a-z][A-Z][0-9][_\-] and is case sensitive. Note that this is not related to the Busyness load balancing method.
This directive will be also ineffective if there is only IPV6 address defined or if IP address is used for "host", either in IPV4 or IPV6 notation. https://coderanch.com/t/570682/Servlets/java/HTTP-Status-application Loadbalancer directives define the parameters needed to create the workers that are connecting to a remote cluster of backend Tomcat servers. Tomcat 503 Service Temporarily Unavailable This will be explicitly noted in the tables below. Http Status 503 This Application Is Not Currently Available Tomcat 6 http tomcat request parallel-processing share|improve this question asked Jan 11 '12 at 19:43 Rafael Orágio 35531022 The response sent along with 503 status might contain some HTML-formatted stack trace. –Tomasz Nurkiewicz Jan 11 '12 at 20:02 add a comment| 4 Answers 4 active oldest votes up vote 4 down vote accepted That typically just means you've run out of threads to handle the request.
This method should be used, if network to and from the backends is your limiting resource. have a peek at these guys When starting up, the web server plugin will instantiate the workers whose name appears in the worker.list property, these are also the workers to whom you can map requests. if there's a log file or something like that, since i am not familiar with apache. Standardisation of Time in a FTL Universe Is foreign stock considered more risky than local stock and why? Apache 502
I didn't have this error before. If set to zero (default) JK will wait for an infinite amount of time on all socket operations. Note however, that the value for mod_jk is given in seconds, the one in server.xml has to use milliseconds. check over here more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other.
Not the answer you're looking for? Tomcat Maxthreads This feature has been added in jk 1.2.20. The cookie will only be send if the request does not already contain a cookie of the same name, or that cookie does not contain a routing ID which the load balancer can fulfill.
sticky_session_forcefalse Specifies whether requests with SESSION ID's for workers that are in error state should be rejected. I am using Apache Tomcat/6.0.7. Under high load, the two session balancing methods will result in a similar distribution, but Next will be better if you need to distribute small numbers of sessions. Http 503 Error This directive is used for large system with more then 6 Tomcats, to be able to cluster the Tomcats in two groups and thus lowering the session replication transfer between them.
Furthermore any load balancer does a global maintenance every worker.maintain seconds. Each retry will be done over another connection. Chebyshev Rotation Must subgroups sharing a common element be nested in each other? this content See the NOTICE file distributed with this work for additional information regarding copyright ownership.
How are you starting the server? Thanks. You should measure how many connections you need during peak activity without performance problems, and then add some percentage depending on your growth rate. If a variable has not been defined before its use, we will search the process environment for a variable with the same name and use their value.
Invalid directives will be logged during web server startup and prevent the web server from working properly. Do not use cachesize with values higher then 1 on Apache 2.x with prefork MPM or Apache 1.3.x! Term describing self-detriment for personal gain How to find positive things in a code review? Configuration File Basics Defining workers to the Tomcat web server plugin can be done using a properties file (a sample file named workers.properties is available in the conf/ directory).
There are three such states, "good", "bad" and "degraded". I'd like to know what could cause this error: my mistake on configuring the server or maybe problems on server side? Changing the presentation of a matrix plot Meaning of わりィ in this sentence use of diodes and resistors in a push-pull amplifier Conference presenting: stick to paper material? Most of the time everything works fine until suddenly the server returns 503.
Bill Fernando Lopez Jr. Should a spacecraft be launched towards the East? By default (value zero) the web server will wait forever which could be an issue for you. Regards, Rene Larsen Dropbox Invite Aman Kaur Greenhorn Posts: 9 posted 8 years ago Oops....I don't think we would want to do it!
Share a link to this question via email, Google+, Twitter, or Facebook. Some directives have been deprecated. This directive can be used multiple times. The attribute has been renamed from jvm_route to route in jk 1.2.20.
The reasons for such configuration can be: We want different contexts to be served by different Tomcat workers to provide a development environment where all the developers share the same web server but own a Tomcat worker of their own. In this documentation we will stick to false and true. If the route name contains a period, the part before the first period will be used as domain name, unless domain is set explicitly. More precisely, the counter for those bad requests will be divided by two, whenever the load balancer does its internal maintenance (by default every 60 seconds).