Interoperability of I&M Tools on GENI Racks

1) Goals

The primary goal of this effort is to get the GIMI and GEMINI tools working on both InstaGENI and ExoGENI racks by GEC17.

To work toward this goal, we need to address items in the following areas:

  • Tools
    • Sliver creation (Flack/Flukes/Omni)
    • Presentation/Orchestration (GENI Desktop/Labwiki)
    • Archival (iRODS)
  • Resources
  • Images
  • Rspecs
  • Configuration
    • initialize/instrumentize
    • postboot scripts
  • Testing
    • What are the basic use cases?
  • Certificates
    • We should be able to use certificates issued by all four of these authorities for both sets of tools
      • Utah emulab, UKY emulab, PGENI, GENI Portal

2) Mailing lists

These lists should be used for help on questions or issues with each of the racks. Subscribing to each of these lists will allow you to see the latest questions, answers, known issues and scheduled downtime related to each of the racks.

3) Known differences between racks

Virtualization technology KVM openvz
Images requires separate filesystem/kernel/ramdisk images, highly recommended to add NEuca guest extensions, must run on KVM Because VMs are openvz containers, must be same OS as hypervisor (Fedora)
Data plane IPs doesn't auto-assign IPs when not specified in request auto-assigns IPs when not specified in request
Login information Not available in manifest until resources are active Available as soon as resources are provisioned
Hostnames VMs or raw PCs do not have given hostnames configured Hostnames set according to client-id in request

See the GENI Racks RSpecs page for a summary of RSpec differences and observed behavior found in a walk-through of RSpec scenarios.

3) GIMI on InstaGENI

3.1) Tools

  • Sliver creation
    • Flack
    • Omni
  • Presentation/Orchestration
    • Labwiki
    • OMF/OML

3.2) Resources

No known resource restrictions identified yet.

3.3) Images

  • Create custom VM image
  • Fedora
    • common Ubuntu image not expected until July

3.4) Rspecs

  • Convert current tutorial RDF to rspec
    • Should work if only nodes and links are specified
    • Changes required
      • images changed
      • sliver-types changed (different virtualization)
      • component managers removed
  • Test the rspec on InstaGENI using both Flack and omni

3.5) Configuration

  • Convert postboot functionality into execute service script

3.6) Certificates

  • Certificates not yet used for Labwiki

3.7) Testing

3.8) Issues

3.9) Demos


4.1) Tools

4.2) Resources

  • Main concern is public IPs with access to certain ports for instrumentation
  • Ilia confirms that all nodes have public IPs assigned. He will check if there are any port restrictions.

4.3) Images

4.4) Rspecs

  • How does ExoGENI handle GEMINI extensions?
    • Outstanding issue: ORCA is not able to pass thru extensions that is does not know about to the manifest. This includes Flack and GEMINI extensions.
    • Let's discuss a more general 'measurement' extension for RSpecs usable by GIMI and GEMINI. We can add an NDL extension to support it in ORCA /ib
  • Convert current tutorial rspec to RDF
  • Test the RDF on ExoGENI using Flukes
  • Test the rspec on ExoGENI using omni
  • Test the rspec on ExoGENI using Flack when it is ready

4.5) Configuration

  • Test the initialize/instrumentize scripts work on ExoGENI nodes
  • Ahmed has tested converting ExoGENI manifest into UNIS schema
  • Hussam reported earlier that GENI Desktop relies on location tags in the manifest for lat/long in topology map
    • Ilia will look into possibly adding these to the ExoGENI rspec

4.6) Certificates

  • All four types of certificates should work for GENI Desktop login and instrumentize
    • Utah
    • UKY
    • GENI Portal
    • PGENI

4.7) Testing

4.8) Issues

Issue ID Description Owner? Ticket Status Blocking progress
1 Slice expiry and Sliver expiry time dont match up. No
2 The expiration_time attribute in the exogeni manifest reports values in two different formats. No
3 SSH Keys: Only one ssh key is installed ExoGENI Fixed No
4 url vs. name attribute for ExoGENI images ExoGENI/InstaGENI Ilia said he would make a change to converter to allow url. Discussions on instaGENI list propose to always using name attribute instead of url. No
5 Flack canvas does not turn green when ExoGENI slice is ready ExoGENI Fixed in next deployment (week of 5/28) No
6 EG does not assign IP address if not provided in the rspec ExoGENI This is by design. See Known differences between racks No
7 Problems deleting ExoGENI slices in Flack Flack No
8 No way to map node logged into to node in manifest (IPs don't match, hostname doesn't match) Hostnames can be set with templated post-boot scripts, neuca-user-data No
9 No way to map interface to a link in the manifest Fixed in next deployment (week of 5/28) No
10 No way to reboot an ExoGENI node (reboot from the command-line is unreliable) ExoGENI No
11 Manifests from ExoSM vs. individual racks Corner case. Be sure to mention in the tutorials. No
12 public key from certificate must be present in omni_config or Flack before creating your slice Fixed in omni (

None of these are currently blocking progress for GEMINI interoperability.

Notes on Exogeni with GEMINI

  1. When creating a slice for Exogeni, make you provide the public SSH key generated from the private key used in your GENI cert.

ssh-keygen -yf <path to your GENI Cert/private key file> >>my_public_key

This public key should be present in your omni_config or the FLACK version you use before you create the slice. GEMINI needs this on your allocated machines in order to instrumentize them

  1. There is a logical problem when using ExoSM to allocated nodes in Exogeni. Consider the example scenario mentioned here.

Note: For those who dont know , EXOSM has the capability to allocate nodes from an exogeni racks. The node reservation info is stored at the ExoSM and the local racks have no accountability for those nodes.

Experimeneter creates an exogeni slice called "SLICE-A" using the EXOSM's AM Interface to allocate 3 nodes at the GPO Exogeni Rack. Experimeneter then uses the same exogeni slice "SLICE-A" and talks to the GPO Exogeni Rack's AM Interface to allocate 3 more nodes at the GPO Exogeni Rack.

Techincally all 6 nodes are part of the same slice and from the same Exogeni rack. But any client tool like FLACK and omni will not give you a complete manifest of the 6 nodes when talking to the ExoSM or the local racks. Each AM interface will report a manifest with the 3 nodes it had allocated.

This is a cause for confusion for the GeniDesktop parser and possibly UNIS. This a CF issue which some of the GPO folks have already begun discussing on the orca-users mailing list.

Currently this case will not work properly and can lead to unpredictable results.

4.9) Demos

5) Team

Jeanne Ohren (BBN)

Luisa Nevers (BBN)

Ezra Kissel (IU)

Hussman Nasir (Kentucky)

Ilia Baldine (RENCI)

Cong Wang (UMass Amherst)

Mike Zink (UMass Amherst)

Divyashri Bhat (UMass Amherst)

6) Planning and Status Meetings

112213: 1pmEST notes

120513: 1pmEST - Cancelled

121913: 1pmEST - Cancelled

011614: 1pmEST notes

013014: 1pmEST notes

021314: 1pmEST - Cancelled

022414 GEC19 Feature Freeze: Only critical bug fixes after this date

022714: 1pmEST notes

031314: 1pmEST

031714 - 031914: GEC19 at Georgia Tech

WebEx Information

7) Key Task List


ID Description Assignee Due Status Notes
1 Create basic Fedora image for ExoGENI Ezra, Hussam, and Jeanne Color(green, Complete)? Decided to use CentOS image
2 Create custom GIMI image for InstaGENI Divya and Cong Color(green, Complete)?
3 Convert current GIMI tutorial RDF to rspec Divya Color(green, Complete)?
4 Test the GIMI rspec on InstaGENI using both Flack and omni DIvya and Luisa Color(green, Complete)? Divya documented test case at
Still testing omni
5 Convert postboot functionality into execute service script Mike and Divya Color(green, Complete)?
7 Test the GEMINI rspec on ExoGENI using omni Ezra Color(green, Complete)?
8 Test the GEMINI rspec on ExoGENI using Flack Ezra, Hussam, Luisa Color(green, Complete)?
9 Determine if initialize and instrumentize can get everything it needs from the ExoGENI manifest Hussam Color(green, Complete)?
10 Look into possible common measurement extensions for ExoGENI Ilia, Ezra, Hussam, and Mike Color(#B0E0E6, In Progress)? Discussed on 5/9. Ilia has idea for NDL model. Need to decide how to map rspec extensions to NDL. 5/23: Ezra proposed more general measurement rspec extensions. Ilia and team reviewed the extensions. Probably won't be able to complete in ExoGENI before GEC17. Will use current workarounds in ExoGENI in the meantime. InstaGENI continues to support GEMINI extensions.
11 Add support for GENI Portal certificates in GENI Desktop Hussam Color(green, Complete)?
12 Look into adding location (lat/lon) tags to the ExoGENI manifest Ilia Color(green, Complete)?
13 Create custom GEMINI image for InstaGENI Ezra and Hussam Color(green, Complete)? Ezra has added GEMINI dependencies to CentOS image. New image at Handed off to UKY to add what they need.
14 Add UKY trusted root certificate to ExoGENI bundle Jeanne/Ilia Color(green, Complete)?
15 Add GENI Portal trusted root certificate to UNIS bundles Ezra Color(green, Complete)?
16 Test the GIMI rspec on ExoGENI using Flack Divya Color(green, Complete)?
17 Test active measurements in GEMINI on ExoGENI Ezra/Frank Color(green, Complete)? Tested Blipp, phasing out LAMP. Frank will be testing Blipp on both EG and IG ongoing
18 Complete display functionality for GEMINI on ExoGENI Charles/Jeremy Color(#B0E0E6, In Progress)? Blocked on Hussam. Will start week of 6/17


ID Description Assignee Due Status Notes
1 Modifications to Ezra's proposal examples Ilya Color(green, Complete)? Ezra's proposal Ilya's Proposal
2 Agree on extension schema All Color(green, Complete)?
3 Modify OWL Schema Ilya Color(green, Complete)?
4 Modify NDL converter for new schema Ilya Color(#B0E0E6, In Progress)?
5 Modify GEMINI opstatus, init, and instrumentize scripts Ezra Color(green, Complete)?
6 Modify Flack to generate new extensions ??? Depends on task 5
7 Complete display functionality for GEMINI on ExoGENI Charles/Jeremy Color(green, Complete)?
8 Modify GENI Desktop Parser to use color extensions Hussam Depends on 3 & 4


ID Description Assignee Due Status Notes
1 Modify NDL converter for new schema Ilya Color(#B0E0E6, In Progress)?
2 Modify GENI Desktop Parser to use color extensions Hussam Depends on 1
3 Modify Flack to generate new extensions ??? Depends on task 2
Last modified 8 years ago Last modified on 02/27/14 17:18:42

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