Exalogic Virtual Tea Break Snippets – EATT Create Assembly OTD/WLS Cookbook

In the blog entry “Exalogic Virtual Tea Break Snippets – Create Assets Evolution” I described how the our asset / asssembley creation scripts had evolved to Python as a processing language and JSON as a file format. As part of that blog I briefly described the assembly configuration section and how it defines scripts that […]

Exalogic Virtual Tea Break Snippets – Pythonised SimpleExaCli

Having completed the CreateAssembly (Create Assets) re-write of the SimpleExaCli I decided it was time to migrate some of the additional functionality I use and enhancing the outputs to match my requirements. This quick blog entry will describe the currently migrated commands and their new output structure. In accordance with my previous CreateAssembly blog I […]

Exalogic Virtual Tea Break Snippets – Create Assets Evolution

Following the success of the CreateAssets shell script and it’s subsequent merging into the SimpleExaCli script I decided to extend the features and leverage the full functionality of the 2.0.6.x (Echo) IaaS. As part of the revisit of the code a rewrite in python was performed and the primary reason for this was it allowed […]

Exalogic Virtual Tea Break Snippets – IaaS Utility vServer

Following a number of discussions around the SimpleExaCli Script and the ModifyLVM Script that are available from this blog site I decided to package the scripts and any future scripts within a simple Utility vServer that was then converted to a template using the SimpleExaCli script. The advantage of constructing this standard utility vServer is […]

Exalogic Virtual Tea Break Snippets – Modifying the Default LVM Guest Template

With the latest release of the Exalogic Virtual Environment (2.0.6.0.0) an number of modifications have been implemented and one of these is the introduction of an LVM based Guest Template. LVM was a much requested feature for the base template but it’s introduction means the information provided in my blog entry Exalogic Virtual Tea Break […]

Exalogic Virtual Tea Break Snippets – Creating Assets with the Simplified Exalogic Cli (A SimpleExaCli.sh Tutorial)

In a previous blog entry I described a script for creating assets (Distribution Groups, vServers, etc) but since that initial script I have written and blogged about the Simple Exalogic Cli Script and therefore have decided to write this short tutorial on the “–create-asset” command option. This version is expanded from it’s original release last […]

Exalogic Virtual Tea Break Snippets – Modifying Memory, CPU and Storage on a vServer

With the current release of Exalogic Virtual the Enterprise Manager Ops Center interface does not provide a support method for increasing the reasources associated with a running vServer. Therefore to increase the CPU, Memory or Disk size of a vServer we need to recreate vServer using the same Network information, mapped storage etc but with […]

Exalogic Virtual Tea Break Snippets – Simplified Exalogic IaaS Cli

In previous blogs I have built and documented a number of extensions to the standard Exalogic IaaS Cli that either simplify the Cli usage or provide additional functionality. Following feedback from the various user I have enhanced and amalgamated a number of my scripts into a new single “SimpleExCli.sh”. In addition the SimpleExCli.sh script contains […]

Exalogic Virtual Tea Break Snippets – Power Cycling Your Virtual Exalogic Rack

On rare occasions you may need to Power Cycle / Shutdown your Virtualised Exalogic Rack. Although the Power Cycle for the Physical Rack is documented in the “Exalogic Machine Owners Guide” and the Control Stack procedure is defined within a MOS note we do not have a single source that documents the Power Down / Power Up procedure for a […]

Exalogic Virtual Tea Break Snippets – Wrapping the Exalogic iaas cli

Having worked with the Exalogic Command Line for a while I
decided to wrap some of the common functions in a simplified bash
script. This saves me creating the keys, connecting and
identifying the appropriate Ids. Instead I can simply specify the
Name and the script will do the rest of the work. This initial
version has just a few commands in it but as I add more the blog
entry will expand, as will the script, and document the new
functionality.

Exalogic Virtual Tea Break Snippets – Cloning an existing vServer

Following on from my Blog entry “Scripted

Template Generation from an existing vServer” I have built a
wrapper script that can be used to execute the Template Generation
script or Clone a specific vServer. This script was not
incorporated into the original script because it must be executed
on a Compute Node with access to the /OVS/Repositories directory
and the Compute Node are a minimal install and hence do not have
all the required software available. As part of the Cloning
process this new script will create an Assets input file that can
be used with the CreateAssets.sh describe in the blog “Scripting

Asset Creation” and optionally execute the result to create
the clone.

To successfully run the script you will need the following 3
scripts located in the same directory on a machine with the EMOC
cli/api rms installed.

Exalogic Virtual Tea Break Snippets – Scripted Template Generation from an existing vServer

As part of your Exalogic Virtual environment you may want to
build vServer that will be used, going forwards, as a template for
future vServers. Currently the “Exalogic

Elastic Cloud Administrator’s Guide” has an appendix
describing how this can be achieved using the OVMM interface.
Based on internal A-Team work it is now possible to achieve this
directly from  a compute nodes command-line without accessing OVMM.

As a result of this I have built the script below that will take
the files associated with a “Stopped” vServer and converts them to
a template.

For this templating process to work the script will need to be
executed on a machine with access to the /OVS/Repositories/*
directories and this means running directly on one of the Compute
Nodes (I generally run it on Compute Node 1).

Because of the space and resource limitations of the Compute Node
(minimal OS) we will need to create a and mount a Share from the
internal ZFS to save the working files and ultimately the
Template. To this end the script will take a number of parameters
that will specification of these directories. If these are not
specified the script assumes we have the ZFS /export/common/images
mounted on /u01/common/images.

As can been seen from the Usage section below the script only
mandates the Name of the vServer to be copied but assumes that the
user has stopped the vServer previously. Once the template has
been created, or post copy, the vServer can be restarted.

Exalogic Virtual Tea Break Snippets – Some Simple ZFS Scripts

Whilst working on an Exalogic Upgrade I was working with the ZFS
storage and having executed the same commands a number of times I
decided to script them. This short blog entry, although it will
grow over time, contains the scripts I find useful. For each of
the scripts I will simply provide a brief description and the
source of the script and occasionally add the output assuming it
is not too long. Where I need to pass the Hostname / IP Address of
the storage heads the scripts will use the flags (unless otherwise
specified):

  • -p <Primary – first storage head>
  • -s <Secondary – Second storage head>

I will be using a combinations of simple bash scripts and the
more function ZFS scripting language.

Exalogic Virtual Tea Break Snippets – Creating a ModifyJeOS VirtualBox

Following on from my previous blog entry “Modifying

the Base Template” I decided to put together a quick blog to
show how to create a small VirtualBox, guest, that can be used to
execute the ModifyJeOS and hence edit you templates. One of the
main advantages of this is that Templates can be created away from
the Exalogic Environment. For the Guest OS I chose Oracle Linux
6u3 and decided to create it as a basic server because I did not
require a graphical interface but it’s a simple change to create
it with a GUI.

Required Software

Exalogic Virtual Tea Break Snippets – Creating and using Distribution Groups

By default running your Exalogic in a Virtual provides you with,
what to Cloud Users, is a single large resource and they can just
create vServers and not care about how they are laid down on the
the underlying infrastructure. All the Cloud Users will know is
that they can create vServers. For example if we have a Quarter
Rack (8 Nodes) and our Cloud User creates 8 vServers those 8
vServers may run on 8 distinct nodes or may all run on the same
node.

Although in many cases we, as Cloud Users, may not be to worried
how the Virtualisation Algorithm decides where to place our
vServers there are cases where it is extremely important that
vServers run on distinct physical compute nodes. For example if we
have a Weblogic Cluster we will want the Servers with in the
cluster to run on distinct physical node to cover for the
situation where one physical node is lost.

To achieve this the Exalogic Virtualised implementation provides
Distribution Groups that define and anti-aliasing policy that the
underlying Virtualisation Algorithm will take into account when
placing vServers.

It should be noted that Distribution Groups must be created
before you create vServers because a vServer can only be added to
a Distribution Group at creation time.

Exalogic Virtual Tea Break Snippets – Modifying the Default Shipped Template

Having installed your Exalogic Virtual environment by default you
have a single template which can be used to create your vServers.
Although this template is suitable for creating simple test or
development vServers it is recommended that you look at creating
your own custom vServers that match the environment you wish to
build and deploy. Therefore this Tea Time Snippet will take you
through the simple process of modifying the standard template.

Exalogic Virtual Tea Break Snippets – Scripting Asset Creation

So far in this series we have looked at creating asset within the
EMOC BUI but the Exalogic 2.0.1 installation also provide the Iaas
cli as an alternative to most of the common functionality
available within EMOC. The IaaS cli interface provides access to
the functions that are available to a user logged into the BUI
with the CloudUser Role.

As such not all functionality is available from the command line
interface however having said that the IaaS cli provides all the
functionality required to create the Assets within a specific
Account (Tenure). Because these action are common and repeatable I
decided to wrap the functionality within a simple script that
takes a simple input file and creates the Asset.

Following the Script through will show us the required steps
needed to create the various Assets within an Account and hence I
will work through the various functions within the script below
describing the steps.

You will note from the various steps within the script that it is
designed to pause between actions allowing the proceeding action
to complete. The reason for this is because we could swamp EMOC
with a series of actions and may end up with a situation where we
are trying to action a Volume attached before the creation of the
vServer and Volume have completed.

Exalogic Virtual Tea Break Snippets – Importing Public Server Template

Before we can create Virtual Servers within Enterprise Manager
Ops Centre (EMOC) we will need to import an appropriate Server
Template that will be used to create the Virtual Server. Server
templates are associated with accounts and hence may be imported
on an account by account basis or for common base templates we can
import them once and make them Public. Once we have configured the
imported template to be Public it will be available to all
accounts and users.

Serve templates can be uploaded to an account in 3 simple steps
although this initial upload will make the template private to an
account its properties can be set to public by simply changing the
“Public” flag within the account Server Template tab. The
following steps are required to import a template and make it
public.

Exalogic Virtual Tea Break Snippets – Creating Accounts

Once we have created our Users and Networks we will want to
enable the Virtual Data Centre (vDC) for access by the Cloud
Users. To facilitate this we will need to create Accounts within
the vDC / Cloud and allocate the users to these accounts. Once a
Cloud User has been allocated to an account they will be able to
access that account and hence create / manage Virtual Servers
within that account / Pool.

To create an Account within a vDC / Pool you will
need to be logged into Enterprise Manager Ops Centre (EMOC) with
the appropriate Role, and this is generally done using you Cloud
Administrator, then simply navigate to the vDC Management
Accordion, vDC, your Cloud and finally Accounts.

Exalogic Virtual Tea Break Snippets – Allocating Static IP Addresses

By default once a Network has been created within the Enterprise
Manager Ops Centre (EMOC) it can be allocated to vServers during
their creation. At this point an IP Address will be allocated
automatically from the pool of Allocated IPs associated with the
Network and Account combination.

In many customer solutions the vServers will need to be allocated
a specific IP address so that they can be accessed externally at a
know location. To achieve this we must Allocate a number of vIPs
within the range allocated to the Account. This is done on an
Account by Account basis as follows.