Axton,
I took that suggestion and was able to put together a very simple servlet
that does a URL check
URL url = new URL(URLs);
HttpURLConnection connection = (HttpURLConnection)
url.openConnection();
the URL in question gets passed in through a config file, and then based on
various tests of the connection, I'm able to determine if the connection was
able to get to the home page or not, and throw a 500 error if it doesn't.
Seems to be doing EVERYTHING I was looking for, thank you for your help on
this urgent matter for my company J
From: Action Request System discussion list(ARSList)
[mailto:arsl...@arslist.org] On Behalf Of Axton
Sent: Wednesday, December 08, 2010 1:01 PM
To: arslist@ARSLIST.ORG
Subject: Re: JSP to monitor functionality
** You could write a servlet to do the work like this:
* Handle the incoming request
* Issue an HTTP request to the desired form/resource, create the
authentication context, etc.
* Parse the HTTP response headers for the response codes
* I use the plural "headers" because when you request a page like the
Home Page, you will get back many HTTP responses for things like css, js,
etc.
* You will want to look at the response code for the original request,
e.g., /Home+Page/
* Return the desired HTTP response code based on the response above
This varies from the redirect approach, which will change the response to a
301 or 302. Servlet is probably the more appropriate technology for this,
versus a jsp, though you can probably get either to work.
On Wed, Dec 8, 2010 at 1:26 PM, LJ LongWing <lj.longw...@gmail.com> wrote:
**
That's the problem, I can't have the load balancer 'log on', they need a URL
that returns a 200 or 500 period. So I am looking for some automated way to
log on automatically on the back end and verify that everything is
functional, if it is, return a 200, if not, 500.and a redirect changes it
from a 200 so it won't work
From: Action Request System discussion list(ARSList)
[mailto:arsl...@arslist.org] On Behalf Of Axton
Sent: Wednesday, December 08, 2010 11:47 AM
To: arslist@ARSLIST.ORG
Subject: Re: JSP to monitor functionality
** Why not have the load balancer load the home page, authenticate, and
check the response code. If 200, then status is ok, if 500 series, then
fault the node. I assume that when the error below occurs in the mid-tier
logs, you are getting 500 responses in the browser.
The response code is really easy to pick out of the http headers and it is
something that every web server will return will every http request.
On Wed, Dec 8, 2010 at 11:15 AM, LJ LongWing <lj.longw...@gmail.com> wrote:
**
I have recently been having issues where the Tomcat is 'functional' from a
Tomcat perspective, but you can't log onto the app server, getting the
following error. What I'm trying to do is write a jsp that will see if a
URL 'returns a value'.specifically I'm planning on using a login URL to get
to the home page with ID and PW pre-configured on the URL...if that URL
loads fine, I need to have the JSP page return a 200, if not, something
else. This is for a load balancer that can't currently tell if your server
is online or not.
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it
from fulfilling this request.
exception
java.lang.ArrayIndexOutOfBoundsException
java.lang.System.arraycopy(Native Method)
com.bmc.arsys.arrpc.rpcext.ArXdrTcpEncodingStream.getEncodedBuffer(Unknown
Source)
com.bmc.arsys.arrpc.rpcext.ArXdrTcpEncodingStream.endEncoding(Unknown
Source)
com.bmc.thirdparty.org.acplt.oncrpc.OncRpcTcpClient.call(Unknown
Source)
com.bmc.arsys.api.arxdrenc.b.call(Unknown Source)
com.bmc.arsys.api.session.c.a(Unknown Source)
com.bmc.arsys.api.ProxyJRpcBase.a(Unknown Source)
com.bmc.arsys.api.ProxyJRpcBase.arCall(Unknown Source)
com.bmc.arsys.api.ProxyJRpc.ARVerifyUser(Unknown Source)
com.bmc.arsys.api.ARServerUser.verifyUser(Unknown Source)
com.bmc.arsys.api.ARServerUser.login(Unknown Source)
com.remedy.arsys.session.LoginServlet.authenticate(Unknown Source)
com.remedy.arsys.session.LoginServlet.doLogin(Unknown Source)
com.remedy.arsys.session.LoginServlet.doThePost(Unknown Source)
com.remedy.arsys.session.LoginServlet.doRequest(Unknown Source)
com.remedy.arsys.stubs.GoatHttpServlet.postInternal(Unknown Source)
com.remedy.arsys.stubs.GoatHttpServlet.doPost(Unknown Source)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
note The full stack trace of the root cause is available in the Apache
Tomcat/5.5.28 logs.
From: Action Request System discussion list(ARSList)
[mailto:arsl...@arslist.org] On Behalf Of Axton
Sent: Wednesday, December 08, 2010 10:02 AM
To: arslist@ARSLIST.ORG
Subject: Re: JSP to monitor functionality
** Hit the mid-tier configuration page; if it loads, then the container/jvm
are working. If you want to go beyond that, create a jsp that performs the
desired checks and returns the output in a format that you can parse, like
xml.
On Wed, Dec 8, 2010 at 10:45 AM, LJ LongWing <lj.longw...@gmail.com> wrote:
**
I have an urgent need to be able see if our server is online through JSP.
Suggestions?
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