Question

Error: JAVA_HOME is not defined correctly. Installing red 5 on centOS

Asked by: smjaleel

Have a dedicated server. I want to install red5 on it.

Following the instructions on the website.

http://osflash.org/red5/linux-install

Seems i dont have java installed on my server....

when i do this step
"  cd red5
  /opt/ant/bin/ant prepare
"
i get an error saying Error: JAVA_HOME is not defined correctly.

i don't know much linux ..... ... so if you can  give me a step by step it'll help a lot...

I want to get red 5 flash media server installed.

i have root access  etc... thanks for the help !!!

i'm using centOS

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Asked On
2009-11-07 at 10:01:50ID24880682
Tags

Error: JAVA_HOME is not defined correctly. installign red5 on centos

Topics

Java Programming Language

,

Java Standard Edition

,

CentOS

Participating Experts
3
Points
500
Comments
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Answers

 

by: a_bPosted on 2009-11-07 at 10:05:08ID: 25767302

Can you type java -version on the command line and see what output does that give?

 

by: CEHJPosted on 2009-11-07 at 10:05:43ID: 25767306

Open file ~/.bshrc and put the following at the top

export JAVA_HOME=<insert path to JDK installation dir her>

Then do

source ~/.bashrc

and try the command again

 

by: CEHJPosted on 2009-11-07 at 10:06:15ID: 25767307

>>Open file ~/.bshrc

=

Open file ~/.bashrc

 

by: afibarraPosted on 2009-11-07 at 10:10:36ID: 25767321

Before you execute:

/opt/ant/bin/ant prepare

you can set JAVA_HOME variable using "export" command:

export JAVA_HOME = path/to/jdk

Hope this helps

 

by: smjaleelPosted on 2009-11-07 at 10:46:50ID: 25767508

the export java_home does not work ...

can you guys give me a link for a rpm or install i can use .. mabe i did the java install wrongly ... i looked onlien and i'm not sure what version i'm supposed to use and i cant even find the versions on suns java site

i will try the other solutions shortly

when i type java -version i get

java version "1.6.0_16"
Java(TM) SE Runtime Environment (build 1.6.0_16-b01)
Java HotSpot(TM) Server VM (build 14.2-b01, mixed mode)

 

by: smjaleelPosted on 2009-11-07 at 10:47:31ID: 25767512

also for the above manuall method .. how can i know whats the path to JDK ?

 

by: CEHJPosted on 2009-11-07 at 10:50:29ID: 25767528

What do you get from

which java

?

 

by: smjaleelPosted on 2009-11-07 at 10:57:20ID: 25767560

CEHJ i do not understand your question

 

by: CEHJPosted on 2009-11-07 at 10:58:22ID: 25767568

Type that command at the command line

 

by: afibarraPosted on 2009-11-07 at 11:08:22ID: 25767608

Try checking in:

/usr/java/

directory. Maybe it would be a directory named:

jdk1.6.0_16

 

by: smjaleelPosted on 2009-11-07 at 11:09:07ID: 25767610

root@local [~]#
root@local [~]# which java
/usr/bin/java

 

by: smjaleelPosted on 2009-11-07 at 11:09:58ID: 25767620

also i see i'm required to have sdk installed ...  how do i know if that is installed

 

by: afibarraPosted on 2009-11-07 at 11:17:10ID: 25767644

As root type:

find / -name jdk*

 

by: afibarraPosted on 2009-11-07 at 11:20:28ID: 25767656

Or try:

/usr/sbin/alternatives --config java

 

by: smjaleelPosted on 2009-11-07 at 11:42:26ID: 25767720

root@local [~]# find / -name jdk*
/usr/java/jre1.6.0_16/lib/servicetag/jdk_header.png
/home/cpins/perl588installer/perl-5.8.8/jpl/get_jdk/jdk_hosts
/var/cpanel/perl/easy/Cpanel/Easy/OptLib/jdk.pm

 

by: CEHJPosted on 2009-11-07 at 11:49:09ID: 25767743

>>also i see i'm required to have sdk installed ...  how do i know if that is installed

Do

which java

 

by: CEHJPosted on 2009-11-07 at 11:49:35ID: 25767747

Sorry

which javac

 

by: smjaleelPosted on 2009-11-07 at 12:07:09ID: 25767809

i'm totally lost ...

 

by: CEHJPosted on 2009-11-07 at 12:21:21ID: 25767858

Those are *commands* you are meant to type at the command line. What is the output of the last one i gave you?

 

by: afibarraPosted on 2009-11-07 at 12:22:39ID: 25767863

Ok, let´s start it over:

When you type:

>root@local [~]# find / -name jdk*

you get:

>/usr/java/jre1.6.0_16/lib/servicetag/jdk_header.png
>/home/cpins/perl588installer/perl-5.8.8/jpl/get_jdk/jdk_hosts
>/var/cpanel/perl/easy/Cpanel/Easy/OptLib/jdk.pm

It seems that you have a JRE (/usr/java/jre1.6.0_16/) not a JDK. If you want to use ant (/opt/ant/bin/ant prepare) you need "javac" which comes with JDK.

So, go to:

http://java.sun.com/javase/downloads/widget/jdk6.jsp

Choose "Linux" or "Linux x64" as your platform

Click on: Continue

Click on: "Skip this step"

Click on: "jdk-6u17-linux-x64-rpm.bin" (if you chose Linux x64 for example)

When its done as root type:

# ./jdk-6u17-linux-x64-rpm.bin

When its done, check again:

"/usr/java/" directory

and look for some "jdk-1.6.x"

And now you have a JDK

Then try again:

# export JAVA_HOME=/usr/java/jdk-1.6.x
#/opt/ant/bin/ant prepare

Good luck !

 

by: smjaleelPosted on 2009-11-07 at 12:50:48ID: 31651424

EXCELLENT !!!

 

by: CEHJPosted on 2009-11-07 at 12:58:04ID: 25767999

>># export JAVA_HOME=/usr/java/jdk-1.6.x

Be aware that if you don't put that in your .bashrc as i suggested you will have to type that at the start of every terminal session

 

by: afibarraPosted on 2009-11-07 at 13:10:27ID: 25768062

Indeed... =)

20120131-EE-VQP-002

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