Re: Help needed
Hi. I'm trying to get Orion Server to start as a non-root users on Red Hat 7.1. I know I need to forward the port from 80 to something above 1024. Does any one know how I can do that with iptables. I've never used it before. ipchains -I input --protocol tcp \ --destination-port 80 -j REDIRECT 10240 If the Orion port is 10240. You need to configure your kernel to support redirecting. Consult Kernel docs. Any help would be appreceated. Bill Wichgers Lachezar
Re[2]: Help needed
I'm trying to get Orion Server to start as a non-root users on Red Hat 7.1. I know I need to forward the port from 80 to something above 1024. Does any one know how I can do that with iptables. I've never used it before. LD ipchains -I input --protocol tcp \ LD --destination-port 80 -j REDIRECT 10240 LD If the Orion port is 10240. LD You need to configure your kernel to support redirecting. LD Consult Kernel docs. I have the same problem with Mandrake 8.0 It seems that all newest Linux releases use iptables instead of ipchains and the syntax is a little different. Any suggestion ? TIA Marcello
Re: Re[2]: Help needed
Hello. I'm trying to get Orion Server to start as a non-root users on Red Hat 7.1. I know I need to forward the port from 80 to something above 1024. Does any one know how I can do that with iptables. I've never used it before. LD ipchains -I input --protocol tcp \ LD --destination-port 80 -j REDIRECT 10240 LD If the Orion port is 10240. LD You need to configure your kernel to support redirecting. LD Consult Kernel docs. I have the same problem with Mandrake 8.0 It seems that all newest Linux releases use iptables instead of ipchains and the syntax is a little different. Any suggestion ? 1. You may decide to use IPChains instead of IPTables. This is a Kernel-Conf problem. 2. I don't use IPTables, but... I searched some info on the net, and it seems, that it is not too different for IPTables than the ipchains one. Maybe you will have to write -I INPUT?!?!? TIA Marcello Lachezar
RE: Help needed
Instead of IP tables, you could use Apache to proxy port 80 requests to the
port your Orion is listening for.
You set up your virtual host in your apache conf file like this (you need to
make sure you have the Apache proxy module installed):
VirtualHost youripaddress:80
ServerName www.yourdomain.com
ProxyRequests On
RewriteEngine On
RewriteRule ^/(.*) http://www.yourdomain.com:4321/$1 [P]
TransferLog /pathtowhereyouwanttologaccess/access
LogFormat %v %h %l %u %t \%r\ %s %b \%{Referer}i\ \%{User-Agent}i\
/VirtualHost
(where 4321 is the port number your Orion is listening on.)
If you do that make sure you add this between your website tags to your
web-site xml file (the one in your orion/config dir):
frontend host=www.yourdomain.com port=80 /
You need to bear in mind that it makes your Orion access log files useless
as all request appear to have come from the same IP. All you do is use the
Apache ones instead.
Check out: http://www.orionsupport.com/articles/apachefrontend.html for some
additional info.
Hope this helps.
Johnny
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Bill Wichgers
Sent: 31 August 2001 16:49
To: Orion-Interest
Subject: Help needed
I'm trying to get Orion Server to start as a non-root users on Red Hat
7.1. I know I need to forward the port from 80 to something above
1024. Does any one know how I can do that with iptables. I've never
used it before.
Any help would be appreceated.
Bill Wichgers
Help needed
I'm trying to get Orion Server to start as a non-root users on Red Hat 7.1. I know I need to forward the port from 80 to something above 1024. Does any one know how I can do that with iptables. I've never used it before. Any help would be appreceated. Bill Wichgers
Re: Help needed.
You can't if you use direct connection to your ejb stuff. Obvious solution - use servlet as a facade for your server part and use http with serialization or xml or html or clear text ... Alex Antonio Vazquez wrote: Hi all, I've write a JApplet that comunicates with an EJB. It's work fine but I have a problem. I use com.evermind.server.ApplicationClientInitialContextFactory and to use it from the client I need to put orion.jar in every computer that use this applet. Can anybody tell me how I use it without copy orion.jar in every computer. Thanks in advance Antonio
Web-security-constraints URGENT help needed!
Preface: I have a password protected site. Servlets, JSPs and pages. Requirement: I want to disable security checking for CERTAIN items. Question: Simple: Can I and How Do I? Looking forward to hearing from you. Lachezar.
Somehow complicated question... URGENT help needed.
Hello. Preface: We are developing an application, consisting of number of services, a web interface, and a couple of servlets. Q1: We wish to use a number of Orion servers. However we need to cluster them, to empower the processor boost. As far as I know clustering is madefor the web apps only. That does not count. We may use non-clusterable Web App. However we need to cluster the EJBs. Some of them are deployable on multiple machines, others are server-type ejbs, that HAVE to run in one place only. I was unable to start RMI clustering either way. Exceptions, hang-ups... Tough problem. THE QUESTION: How do I cluster RMI interfaces of a number of Orion servers. Is that enough to receive different ejb home interface, when I look-up an EJB? If not, how do I do that? I mean: Lets say we have 10 Orion servers: 1. Web App server. For the servlets, jsps and so on. HTTP documents are put on an Apache web server. That's one. 2..9. EJB servers. They have some 10 EJBs, to perform different tasks. they do not have tobe on all machines. 10. sEJB server. These are some EJBs that perform server-type services. Access to different data-sources(not a java Data Source, but rather application specific non database data). They are deployed on one place only. I wish to be able to contact any ejb from any other on the cluster. How Do I Do That? Q2: TECHNICAL Is there a way to reset the InitialContextFactory? Problem: Some time ago I was lit a light about the RMIInitialContextFactory. It worked fine, until I came upon a situation, where I had to connect to services (EJBs) on a different machine, with a different provider URL, username, password. Well. In 3 words: It doesn't work! It still continues to use the prime connection. The same URL, user and password. And that's NOT good at all... I need to switch! the app continues on and on. Also: I have an EJB deployed on one Orion. I tried to connect to a different EJB on a different machine. OK. Then again not :(. I deployed the second EJB on the first Orion. Later when I try to connect to the other machine I connection to the local deployment. Why is that? Sorry, if these seem too dumb, or somehow unneeded, but I need to do this :( Please help. I like Orion much. I really wish to be able to run everything smoothly. Until now ISA worked fine, but it's slower, has some problems with the EJB-2-EJB connection and is EXPENSIVE! I really would like to run on Orion. Looking forward to hearing from you all. Lachezar Dobrev. May the shade of the tree strengthen you.
Help needed to access orion-primer example bean from standalone app
Below is a test to access orion-primer example bean from
a standalone client.
I can not get this to work and have looked through the
mail archive and web to find any working examples of
this type of access. The lookup portion fails and I have
tried a number of variations.
Since the orion-primer example is used in the Orion
documentation and does work when I access the bean from
a servlet it seems that this bean is a good candidate
for being accessed from a standalone app (ie, any of the
mechanical issues regarding the bean creation and deployment
are moot).
I do have the application-client.xml empty for the
fully package qualified name reference attempt and have
the refs set correctly when using the JDNI name lookup.
I have verified that the host, application, username/password
etc... are correct and do work. I have tried on 1.3.8 and
1.4.5, I am using JDK 1.2.2.
Please augment and/or modify or give hints to get this code to
access the HelloBean. I have spent a good amount of time trying
to make this work and really need some help. Thanks ahead.
PS. let me know what version of Orion you use to get it to
work. Also if you have a simple JNDI name dump utility so
I can "see" what Orion has done during its deployment would
be a great help.
MrP
Mark Palaima - [EMAIL PROTECTED]
/*
S T A N D A L O N EB E A NT E S T
*/
package test.beans ;
import hello.ejb.* ;
import java.util.Properties ;
import javax.naming.Context ;
import javax.naming.InitialContext;
import javax.naming.NamingException ;
import javax.rmi.PortableRemoteObject;
public class PrimerClient {
public static void main(String[] args) {
try {
HelloHome home ;
// GETS EXCEPTION:
// java:comp/env namespace is only available from within a J2EE
component
// Any variation of java:comp/env will get this exception.
home = (HelloHome)getNarrowedName(
"java:comp/env/ejb/hello/ejb/HelloHome",
HelloHome.class) ;
// GETS EXCEPTION:
// java:comp/env namespace is only available from within a J2EE
component
home = (HelloHome)getNarrowedName(
"java:comp/env/ejb/HelloHome",
HelloHome.class) ;
// GETS EXCEPTION:
// hello/ejb/HelloHome not found
home = (HelloHome)getNarrowedName(
"hello/ejb/HelloHome",
HelloHome.class) ;
// GETS EXCEPTION
// hello.ejb.HelloHome not found
home = (HelloHome)getNarrowedName(
"hello.ejb.HelloHome",
HelloHome.class) ;
Hello bizObj = home.create();
System.out.println("response: " + bizObj.sayHello()) ;
bizObj.remove();
} catch(Exception ex) {
System.err.println("errmsg: " + ex.getMessage()) ;
}
}
// There are 2 ways to lookup the ejb homes:
//
// 1. The name is FQN like home.ejb.ErrorHome. This does not
//require any support from the application-client.xml
//
// 2. The JDNI name like:
//hello/ejb/HelloHome or
//java:com/env/ejb/hello/ejb/HelloHome
//requires an ejb-ref entry in the application-client.xml file
//
private static java.lang.Object getNarrowedName(String name, Class cls)
{
try {
InitialContext ctx = new InitialContext(getProperties());
Object ref = ctx.lookup(name) ;
Object narrowedObj = PortableRemoteObject.narrow(ref, cls);
return narrowedObj ;
}
catch(Exception e) {
System.out.println("Failed to find narrow.\n" +
e.getMessage()) ;
System.out.println("") ;
}
return null ;
}
// Required since we are accessing the Orion JNDI tree from the outside
// of the appserver.
private static Properties getProperties() {
Properties p = new Properties();
p.setProperty(Context.PROVIDER_URL,
"ormi://localhost/orion-primer");
p.setProperty(
Context.INITIAL_CONTEXT_FACTORY,
"com.evermind.server.ApplicationClientInitialContextFactory");
// orion\config\principals.xml, set deactivated="false" for admin
user
p.setProperty(Context.SECURITY_PRINCIPAL, "admin");
p.setProperty(Context.SECURITY_CREDENTIALS, "123");
return p ;
}
}
Help needed to access orion-primer example bean from standalone app
Below is a test to access orion-primer example bean from
a standalone client.
I can not get this to work and have looked through the
mail archive and web to find any working examples of
this type of access. The lookup portion fails and I have
tried a number of variations.
Since the orion-primer example is used in the Orion
documentation and does work when I access the bean from
a servlet it seems that this bean is a good candidate
for being accessed from a standalone app (ie, any of the
mechanical issues regarding the bean creation and deployment
are moot) since it works.
I do have the application-client.xml empty for the
fully package qualified name reference attempt:
application-client
/application-client
and here is the application-client.xml used for the
JNDI lookup attempts:
application-client
ejb-ref
ejb-ref-nameejb/HelloHome/ejb-ref-name
ejb-ref-typeSession/ejb-ref-type
homehello.ejb.HelloHome/home
remotehello.ejb.Hello/remote
/ejb-ref
/application-client
I also make sure the application-client.xml is in a
META-INF directory under the directory where I am running
the standalone client program from.
I have verified that the host, application, username/password
etc... are correct and do work. I have tried on 1.3.8 and
1.4.5, I am using JDK 1.2.2.
Please augment and/or modify or give hints to get this code to
access the HelloBean. I have spent a good amount of time trying
to make this work and really need some help. Thanks ahead.
PS. let me know what version of Orion you use to get it to
work and where/what the application-client.xml was. Also if
anyone a simple JNDI name dump utility so I can "see" what
Orion has done during its deployment would be a great help.
MrP
Mark Palaima - [EMAIL PROTECTED]
/***
S T A N D A L O N EB E A NT E S T
***/
package test.beans ;
import hello.ejb.* ;
import java.util.Properties ;
import javax.naming.Context ;
import javax.naming.InitialContext;
import javax.naming.NamingException ;
import javax.rmi.PortableRemoteObject;
public class PrimerClient {
public static void main(String[] args) {
try {
HelloHome home ;
// Returns null because:
// java:comp/env namespace is only available from within a J2EE
component
home = getHelloHome("java:comp/env/ejb/hello/ejb/HelloHome") ;
// Returns null because:
// java:comp/env namespace is only available from within a J2EE
component
if (home == null)
home = getHelloHome("java:comp/env/ejb/HelloHome") ;
// Returns null because:
// hello/ejb/HelloHome not found
if (home == null)
home = getHelloHome("hello/ejb/HelloHome") ;
// Returns null because:
// ejb/HelloHome not found
if (home == null)
home = getHelloHome("ejb/HelloHome") ;
// Returns null because:
// HelloHome not found
if (home == null)
home = getHelloHome("HelloHome") ;
// Returns null because:
// hello.ejb.HelloHome not found
if (home == null)
home = getHelloHome("hello.ejb.HelloHome") ;
// Unfortunately home is null from all above attempts (sigh...)
if (home == null) {
System.out.println("All HelloHome lookup attempts failed.")
;
}
else {
Hello bizObj = home.create();
System.out.println("response: " + bizObj.sayHello()) ;
bizObj.remove();
}
} catch(Exception ex) {
System.err.println("errmsg: " + ex.getMessage()) ;
}
}
// There are 2 ways to lookup the ejb homes:
//
// 1. The name is FQN like home.ejb.ErrorHome. This does not
//require any support from the application-client.xml
//
// 2. The JDNI name like:
//hello/ejb/HelloHome or
//java:com/env/ejb/hello/ejb/HelloHome
//requires an ejb-ref entry in the application-client.xml file
private static HelloHome getHelloHome(String name)
{
try {
InitialContext ctx = new InitialContext(getProperties());
Object ref = ctx.lookup(name) ;
HelloHome narrowedObj =
(HelloHome)PortableRemoteObject.narrow(ref,
HelloHome.class);
return narrowedObj ;
}
catch(Exception e) {
System.out.println("Failed to find narrow.\n" +
e.getMessage()) ;
System.out.println("") ;
}
return null ;
}
// Required since we are accessing the Orion JNDI tree from the outside
// of the appserver.
debugging help needed
I wrote a little method to parse out set() metadata out of a mysql database,
it works fine inside of a .jsp but when i call my class it gives me the
following error, how might i get more meaningfull debuging data. i am a
java newbie and come from a perl background so please be verbose if this is
a stupid question:
java.lang.NullPointerException
at /pscms/options.jsp._jspService(/pscms/options.jsp.java:38) (JSP page line
20)
at com.evermind.server.http.EvermindHttpJspPage.service(Compiled Code)
at com.evermind.server.http.HttpApplication.t8(Compiled Code)
at com.evermind.server.http.JSPServlet.service(Compiled Code)
at com.evermind.server.http.di.pz(Compiled Code)
at com.evermind.server.http.di.forward(Compiled Code)
at com.evermind.server.http.dr.p4(Compiled Code)
at com.evermind.server.http.dr.p3(Compiled Code)
at com.evermind.util.f.run(Compiled Code)
///Below is the .jsp
!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
html
head
titleUntitled/title
/head
body
%@
page
import="java.util.*,java.sql.*,javax.sql.*,javax.naming.*,pscms.HtmlOptionLi
st"
%
HI
%
HtmlOptionList hol = new HtmlOptionList("pscms.pscms_users");
Vector foo = new Vector();
foo = hol.getHtmlOptionList("pscms.pscms_users");
out.println(foo.size());
out.println("pick your Group Id" + foo.get(1)+"brpick your
Region"+foo.get(1));
%
/body/html
and here is the HtmlOptionList.java
//generate option list from db
package pscms;
import java.sql.*;
import javax.sql.*;
import java.util.*;
import javax.naming.*;
public class HtmlOptionList
{
private String table;
private String htmlPrintString = "";
private String htmlPrintS;
private Vector v;
public HtmlOptionList(String table)
{
this.table = table;
}
public Vector getHtmlOptionList(String table)
{
try
{
Context ctx = new InitialContext();
DataSource ds = (DataSource) ctx.lookup("jdbc/mysql");
Connection con = ds.getConnection();
DatabaseMetaData meta = con.getMetaData();
String productName = meta.getDatabaseProductName();
//HtmlOptionList hol = new HtmlOptionList();
//hol.getHtmlOptionList(con,"pscms_users");
//out.println(htmlPrintString);
String htmlPrintS = "";
String htmlPrints = "";
Vector v = new Vector();
Statement show_columns_st = con.createStatement();
String show_columns_q = "show columns from " + table;
ResultSet show_columns_rs =
show_columns_st.executeQuery(show_columns_q);
ResultSetMetaData show_columns_rsmd =
show_columns_rs.getMetaData();
int i = 1;
while (show_columns_rs.next())
{
// print the values for the current row.
String htmlPrintString = new String();
String string = "";
String bla = show_columns_rs.getString(2);
i++;
int c = 0;
int d =0;
StringTokenizer st = new StringTokenizer(bla,"','");
for (c = 0;st.hasMoreTokens();c++){String token =
st.nextToken();}
StringTokenizer st1 = new StringTokenizer(bla,"','");
for (int b = 0;st1.hasMoreTokens();b++)
{
String token = st1.nextToken();
if(b == 0 )
{
if(token.equals("set("))
{
d = 1;
}
}
if(d ==1)
{
if(b == 1)
{
htmlPrintString=new
String("SELECT id='north_east' name='gid'
title='Group ID'OPTION selected value='"+token+"'"+token);
}
if(b==0|| b == (c-1)||b==c||b==c-2)
{
}
else
{
Help needed in setting up EJB demo
Hi, I downloaded the Orion server (v 1.03b) and wanted to try out the EJB examples. Prior to this , I have already downloaded Hypersonic SQL I managed to get some sample servlets to talk and access the Hypersonic SQL database server. Then I decided to try out the EJB samples. Along with this, I also modifed the datasource.xml as given in the online documentation. == data-sources data-source name="Default data-source" class="com.evermind.sql.ConnectionDataSource" location="jdbc/DefaultDS" pooled-location="jdbc/DefaultPooledDS" xa-location="jdbc/xa/DefaultXADS" ejb-location="jdbc/DefaultEJBDS" url="jdbc:HypersonicSQL:test" connection-driver="hSql.hDriver" username="sa" password="" schema="database-schemas/hypersonic.xml" / /data-sources == When I followed the instrucutions included and modified the server.xml file, I noticed that there were some errors. == C:\install\orionjava -jar orion.jar Orion/1.0.3 initialized Auto-deploying ejbsamples... Auto-deploying usermanager... Error compiling file:/C:/install/orion/demo/ejb/us ermanager/: No default cmt-datasource and no source specified Auto-deploying product... Error compiling file:/C:/install/orion/demo/ejb/produc t/: No default cmt-datasource and no source specified Auto-deploying cart... done. Auto-deploying product... Error instantiating application 'ejbsamples' at file:/ C:/install/orion/demo/ejb/: Error auto-deploying application-client at product: No location specified and no suitable instance of the type 'Product' found for the ejb-ref MyProduct == So I modifed the server.xml to back to the original contents (without EJB demo) and I thought that my data source was not configured correctly and modified it to be this == data-sources data-source name="Default data-source" class="com.evermind.sql.ConnectionDataSource" location="jdbc/DefaultDS" pooled-location="jdbc/DefaultPooledDS" xa-location="jdbc/xa/DefaultXADS" ejb-location="jdbc/DefaultEJBDS" url="jdbc:HypersonicSQL:hsql://localhost" connection-driver="org.hsql.jdbcDriver" username="sa" password="" schema="database-schemas/hypersonic.xml" / /data-sources == However, the error still appears when I modifed back the server.xml to include the EJB demo. == C:\install\orionjava -jar orion.jar Orion/1.0.3 initialized Auto-deploying usermanager... Error compiling file:/C:/install/orion/demo/ejb/us ermanager/: No default cmt-datasource and no source specified Auto-deploying product... Error compiling file:/C:/install/orion/demo/ejb/produc t/: No default cmt-datasource and no source specified Auto-deploying product... Error instantiating application 'ejbsamples' at file:/ C:/install/orion/demo/ejb/: Error auto-deploying application-client at product: No location specified and no suitable instance of the type 'Product' found for the ejb-ref MyProduct == Any help on this is very much appreciated. Or if you could point me to a step by step tutorial / guide on developing EJB ( session and entity bean) would be very much appreciated. I have already downloaded the Orion server EJB Step By Step guide which only covers on session bean in Orion server. However, I have not tried it yet. Thank you. Regards, Yong Chee Keong
