Re: tomcat 4.1.12 not starting- exception

[Raj Saini]

Hi,
jakarta-tomcat-4.1.12-LE-jdk14.exe does not have some librabries which are part of the JDK 1.4.x. Download the jakarta-tomcat-4.1.12.exe as your JDK version is 1.3.x. If you want to use the LE version download and install the JDK 1.4.x.

Raj
Sexton, George wrote:

The LE distribution requires JDK 1.4

-----Original Message-----
From: Nalini [mailto:nalinisp@;yahoo.com]
Sent: 28 October, 2002 11:54 AM
To: Tomcat Users List
Subject: tomcat 4.1.12 not starting- exception


Hi,

I have installed jdk1.3.1_04 and made JAVA_HOME point
to the jdk home =
directory.
Then I have down loaded the release version of tomcat
4.1.12 and unzipped =
it. When I tried to start tomcat from the
tomcathome\bin directory using =
the startup command , I get the following error.

Using CATALINA_BASE:
C:\jakarta-tomcat-4.1.12-LE-jdk14
Using CATALINA_HOME:
C:\jakarta-tomcat-4.1.12-LE-jdk14
Using CATALINA_TMPDIR:
C:\jakarta-tomcat-4.1.12-LE-jdk14\temp
Using JAVA_HOME:       C:\jdk1.3.1_04
Exception in thread "main"
java.lang.NoClassDefFoundError: org/xml/sax/Inpu=
tSour
ce
        at java.lang.Class.newInstance0(Native Method)
        at java.lang.Class.newInstance(Class.java:232)
        at
org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:179)

Could someone help me fix this error.

--- Robert L Sowders <[EMAIL PROTECTED]> wrote:

Here is a nice article that might help with
clustering.

http://www2.theserverside.com/resources/article.jsp?l=Tomcat

rls






Bernd Koecke <[EMAIL PROTECTED]>
10/28/2002 01:45 AM
Please respond to "Tomcat Users List"


       To:     Tomcat Users List
<[EMAIL PROTECTED]>
       cc:
       Subject:        Re: load balancing with
routing with mod_jk in cluster


Hi,

it seems that you want to use mod_jk on the nodes as
balancer. We don't
use it
in that way. We have a load balancer in front of our
nodes, which has a
standby
balancer, if the first one goes down. If we want to
get your requested
behavior,
we had to configure this on our load balancer, not
on the nodes. This
balancer
knows nothing about apache, tomcat and mod_jk. So I
don't know how to
manage it
with mod_jk.

I don't know how your config should work. Because if
N1 routes to all
other
nodes and N1 goes down, how should your client know,
that he had to
connect to
N2? You need some logic in front of your cluster,
that the clients see
your
cluster as one big server. If you want something
like standby or hot
standby you
must implement this in the front logic, not on the
nodes. And I don't know
if
this is possible with jk1.

Why do you limit the balancing to N1? Most of the
work is done in your
servlets.
The balancing is not so hard, that it will bring
your node down. If all
nodes do
balancing its no problem, if one node goes down.

But may be I don't understand your scenario.

Bernd

Alexander Piavka wrote:

Bernd thanks for your reply.

There is one more question i have.
I have 3 nodes N1,N2,N3 each runs apache and

tomcat. On node N1 i want

to run lb_worker1 which will route all requests

between all nodes.

All apache servers will send requests to this

lb_worker1.

On node N2 i want to run lb_worker2 which will

start routing  all
requests

between all nodes ONLY then lb_worker1 goes down.
I don't know if it is possible to make this

configuration in

workers.properties file.
As i see i on each node workers.proprerties file

should have bl_worker

which will route requests between bl_worker1

bl_worker2. And bl_worker1

should have very high lbfactor and bl_worker2 very

low:

worker.bl_worker.type=lb

worker.bl_worker.balanced_workers=bl_worker1,bl_worker2

but this is probably illegal as load balancers

don't have lbfactor,

and balancers can't have other balancers in their

balanced_workers

property.
Please tell me if i can make the above scenario

work.

[...]


--
Dipl.-Inform. Bernd Koecke
UNIX-Entwicklung
Schlund+Partner AG
Fon: +49-721-91374-0
E-Mail: [EMAIL PROTECTED]

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