Thursday Jan 15, 2009

OpenSolaris and WebSphere

As lot of you may have tried already installing/using WebSphere on OpenSolaris and may have ran into some issues during install so I thought I will cover some of those issues into this blog and will provide possible workaround.
The instruction below applies to WebSphere Application Server v6.1 and v7.0. I havn not  tested 6.0.X but I assume it will work fine. If not then let me know. 

OpenSolaris brings in lot of new feature details can be found at opensolris.org. If you don't want to commit a hard disk for OpenSolaris experience you can use VirtualBox and then install OpenSolaris inside VirtualBox. Once you figure out which route you want to take and how you want to install OpenSolaris then you need to grab installer for WebSphere and try installing it over. You will have following few options available to you to install:
Silent installation:

You will have to edit the template response file. After you make all the necessary changes if you try to install it will fail and if you check the log it will complain that this is not one of supported OS. The reason for this can be checked by the output of the command "uname -a" and as you can see from output it is being reported as "5.11".  So this is what you will have to add in your response file:
-OPT disableOSPrereqChecking="true"
Now try again and installation should complete without any error and you will get message about the Operating System version. Just ignore this message and start using.
Installing using the Installer GUI:
When you try to install using launchpad.sh it will come up but when it invokes the install command then it will fail complaining the installation cannot be started in GUI and suggest that you use "silent" installer. This error happens only with WAS v6.1 only WAS v7.0 is fine and you can install without any issues. If you want to get into details you can check the niflog  and you will understand that this is happening due to installshield issues. Googling for this will reveal that this is a known issue with lot of platform eg. AIX/Linux/Solaris and it has nothing to do with either the OS or WAS.
So we can use the java based installe by directly invoking the following command:
bash # java -jar setup.jar
This to succeed you must have java runtime in your path which is by default available in OpenSolaris. It will bring up the installer and as said earlier "Prerequisite Check" will fail and if you still continue everything will be installed right.

Just to make sure the "Install Verification Test" and you will observe all the test passing now you are good to go.
If you runinto any display issues it will be worth checking this blog.

Tuesday May 13, 2008

EC2 blog

Rajesh has put up the EC2 blog where you can check for breaking news about OpenSolaris on EC2. Here are some information which is available for you:
Meet the Sun OpenSolaris on EC2 Team
Information on GlassFish/LifeRay/MySQL AMI
Current beta program status.

Check and leave you comments there if you want to know anything about this.
There are other AMI's are in progress and should be made available as soon as it is ready.

Monday May 12, 2008

Problem bringing up domU

If you run into issues when following my previous blog then you may running into problem with sysevent daemon.
If that happens here is what you need to do:
once done installing all the package and rebooting with the Sun xVM server option in the boot menu from the dom0 issues the following command.

Cut and paste everything in between ---- this line to your terminal and hit return and then you should be able to proceed with domU creation.

The error is like as:

bash-3.2# xm create -c install.py

Using config file "./install.py".
bash-3.2# Error: Device 0 (vif) could not be connected. Hotplug scripts not working.

-------------------------

BASEDIR=${BASEDIR:-/}

/usr/sbin/syseventadm list -R $BASEDIR -c EC_xendev > /dev/null 2>&1
if [ $? -ne 0 ]
then
/usr/sbin/syseventadm add -R $BASEDIR -c EC_xendev \\
/usr/lib/xen/scripts/xpvd-event 'action=$subclass' \\
'domain=$domain' 'vdev=$vdev' 'device=$device' \\
'devclass=$devclass' 'febe=$fob'
fi

/usr/sbin/syseventadm list -R $BASEDIR -c EC_xpvsys > /dev/null 2>&1
if [ $? -ne 0 ]
then
/usr/sbin/syseventadm add -R $BASEDIR -c EC_xpvsys \\
/usr/lib/xen/scripts/xpvsys-event 'subclass=$subclass' \\
'shutdown=$shutdown'
fi

# restart daemon if the package is being added to the running system
if [ "$BASEDIR" = "/" -a $? -eq 0 ]
then
/usr/sbin/syseventadm restart
fi

---------------------

Wednesday May 07, 2008

How to create domU in OpenSolaris 2008.05

In this blog I will walk you through the steps of creating a domU within your OpenSolaris 2008.05 installation.
To accomplish this task you must have done your OpenSolaris 2008.05 install and I assume you are familiar with this if not please refer to OpenSolaris web-site.

Once you done installing this you need to use IPS(Image Packaging System) so that your system will have the packages related to xen. Make sure your pkg authority is set right and you are able to download the packages.
If this is set right i.e. if you haven't changed anything then it should look like this:

-bash-3.2# pkg authority
AUTHORITY URL
opensolaris.org (preferred) http://pkg.opensolaris.org:80/

Now you will need to add the following packages(you can cut and paste these commands to your terminal):

pkg install SUNWvirtinst
pkg install SUNWurlgrabber
pkg install SUNWlibvirt
pkg install SUNWxvmhvm
pkg install SUNWxvmdom
pkg install SUNWxvm
pkg install SUNWgccruntime
pkg install SUNWgnutls
pkg install SUNWlibsdl
pkg install FSWxwpft
pkg install FSWxwrtl

Once done doing this now you have all the necessary packages. Now you need to modify you GRUB BOOT Loader so that you have the option to load xVM when you system boots. This can be achieved by doing this:

Open the file "/rpool/boot/grub/menu.lst" in vi and add the following entry:
----
title Solaris xVM
bootfs rpool/ROOT/opensolaris
kernel$ /boot/$ISADIR/xen.gz
module$ /platform/i86xpv/kernel/$ISADIR/unix /platform/i86xpv/kernel/$ISADIR/unix -B $ZFS-BOOTFS
module$ /platform/i86pc/$ISADIR/boot_archive
----
Save your changes and exit out of the editor.
Now reboot your system and when you get to the grub loader select the "Solaris xVM" so that you will have the xVM related modules loaded.

Once the boot is complete you will need to start some of the services to enable you to use the xen management command. The services need to be enabled are as:

svcadm enable svc:/system/xvm/store:default
svcadm enable svc:/system/xvm/xend:default

svcadm enable svc:/system/xvm/console:default

Note: Enabling the console is really necessary otherwise when you run your xm commands you will get into error like following:
/usr/lib/xen/bin/xenconsole: Could not open tty `/dev/pts/7': No such file or directory

Once you have done this follow the instruction listed in MJR's blog.
http://blogs.sun.com/mrj/entry/installing_opensolaris_on

Which will have your domU up and running.

Monday May 05, 2008

OpenSolaris and Amazon EC2

As many of you might have got the news by now about the planet's best Operating System has been made available on one of the most scalable Compute Cloud named Amazon EC2(Elastic Compute Cloud).
This brings you the best of the both worlds which includes the Amazon Web-Services and OpenSolaris code base. If you haven't checked how cool OpenSolaris is I would suggest to get a copy of OpenSolaris and check for your self. Once you get this just get your hand dirty on xVM and try to play with the virtualization it offers. There are may more things that has been included with this OpenSolaris and some of them are as:
. Developed under Open Source community.
. New subscription support.
. Various tools needed for development eg. Sun Studio, Netbeans and the SAMP stack.
. Different virtualization technology
. ZFS and DTRACE.
. Fast and easy installation with a single click and simply add software via the new Image Packaging System (IPS).

Combining Amazon EC2 on demand compute capacity with their integrated storage and running OpenSolaris on top of that gives you unparalleled env to run your application in secure, reliable and easily scalable.
OpenSolaris makes it possible to run your application on EC2 while taking or retaining the differentiating features of the Solaris Operating system and they include:

1. DTrace - You continue to do the same Dynamic Tracing over EC2.
2. Binary and Backward Compatibility - As with Solaris 10 you continue to run your application unmodified on OpenSolaris. So you can run your oldest code unmodified without breaking a thing.
3. Open Source - OpenSolaris is developed under OpenSolaris community with participation from thousands of developer worldwide. It has more predictable life cycle and support service so you can plan and upgrade your system when needed.
4. Easy to use - If you have given a try to install OpenSolaris you would know how easy it is.

So how does the whole thing work ?
Here is the what needed to be done to have your own OpenSolaris running on Amazon EC2:
You must have an account with Amazon WebSerives
Register for OpenSolaris AMI
Sun gets back to you with the details
Use the AMI/API tool to get your env.
Install/Update or simply customize your env by installing software or customizing your system.

For more details don't forget to check here.

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