wiki:GIMIv1.1Tutorial/Slice

Version 25 (modified by zink@cs.umass.edu, 7 years ago) (diff)

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B. Obtain Slice

Image Map

2) Obtain slice of GENI resources, install I&M tools and experiment services

B.1 Select target aggregates

In this tutorial, we focus on ExoGENI and do not select any additional aggregates. In future tutorials we will present how GIMI can support experiments on other aggregates and a combination of aggregates (e.g., ExoGENI and WiMAX).


B.2 Formulate slice topology for experiment, and build request rspec

We will not go into any detail on this topic since this is covered in the ExoGENI tutorial.


B.2 Acquire resources and load images/packages for I&M tools and experiment services

B.2.1 Flukes

B.2.1.1 Download the RDF file that describes the ExoGENI topology for your experiment with the following commands:

Don't forget to replace gimiXX with your current userID.
$ cd ~/Tutorials/GIMI/gimiXX
$ wget http://emmy9.casa.umass.edu/RDFs/gimiXX.rdf

B.2.1.2 Before experimenters can use Flukes, its properties file has to be modified.

Open the properties file with your favorite text editor (e.g., nano):

$ nano ~/.flukes.properties

Then change the file as indicated below.

# Do not change these
orca.xmlrpc.url=https://geni.renci.org:11443/orca/xmlrpc,https://rci-hn.exogeni.net:11443/orca/xmlrpc,https://bbn-hn.exogeni.net:11443/orca/xmlrpc,https://nicta-hn.exogeni.net:11443/orca/xmlrpc
ssh.options=-o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -X
xterm.path=/usr/bin/xterm

# replace XX with your user index (with leading 0, if necessary)
user.keystore=/home/geniuser/Tutorials/GIMI/gimiXX/ssh/gimiXX.jks
ssh.key=/home/geniuser/Tutorials/GIMI/gimiXX/ssh/gimiXX_key
ssh.pubkey=/home/geniuser/Tutorials/GIMI/gimiXX/ssh/gimiXX_key.pub

image1.name=gec15-gimi-image
image1.url=http://emmy9.casa.umass.edu/GEC15-GIMI-Tutorial/gec-15-tutorial.xml
image1.hash=fb135d730ec37d92a6f4c873f26cea72af1c0a31 

The following video gives more details on the necessary changes of the file.

Now start Flukes by double-clicking on the icon on the VM's desktop.

B.2.1.3 In the tutorial VM start Flukes and load gimiXX.rdf. (Also here, replace gimiXX with your assigned user ID.) In Flukes select Files->Open Request->select gimiXX.rdf in ~/Tutorials/GIMI/gimiXX.

B.2.1.4 Verify settings and create slice. First select the the Request View tab.

  • To verify settings right-click on each node and select Edit Properties
  • To create a slice enter your slice name gimiXX-tutorial in to the empty field next to the Submit Request button and the click the latter.

B.2.1.5 To check if all the resources have come up go to the Manifest View tab and enter your slice name (gimiXX-tutorial) into the empty field. Then click Query for Manifest. After a short moment a box with all the requested resources and their respective status will appear. (This box does not update automatically and you have to hit the Query for Manifest button again to receive and update).

B.2.1.6 GIMI specific post boot script.


B.2.2 Omni

In this section, we present an alternative approach to setup a slice by using the Omni command line tools to reserve resources. To perform this task the following steps have to be executed:

B.2.2.1 The post boot script that is used in the case of slice reservation via Flukes has to be converted from an RDF file into a single bash script that takes slice name and node ID as arguments.

This script will be installed and executed on the nodes by an execute service defined in the rspec as follows:

<execute command="wget -q -P /tmp http://pc205.emulab.net/gimi/gec15-postboot.sh ;chmod +x /tmp/gec15-postboot.sh;/tmp/gec15-postboot.sh johGimi09-both nodeA > /tmp/gec15-postboot.log" shell="/bin/sh"/>

B.2.2.2 The rdf file has to be converted into an rspec (see attached gec15-tutorial-gimi09-nospec.rspec). You will notice that the rspec has to be slice-specific because it needs to pass the slice name into the post boot script.

B.2.2.3 Then the following commands have to be executed to set up and manage the slice with Omni:


2.1) Select target aggregates 2.2) Select desired software images/packages for I&M tools and experiment services

2.3) Obtain certs, credentials, passwords and keys

2.4) Formulate slice topology for experiment, and build request rspec

2.5) Acquire resources and load images/packages for I&M tools and experiment services

2.6) Start selected software processes

2.7) Confirm slice with installed I&M tools and experiment services



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