Fix tasks
From Java CoG Kit
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About this Document
This document presents some helpful links to set up a Grid with the Globus Toolkit. It also introduces possibilities to use SSH services and a single computer with the Karajan workflow engine.
Setting up a Workstation Grid with Globus
This installation is based on GT 4.0.2 WS.
The installation of a Globus environment is not as trivial as downloading a binary, unpacking it and running a program. A Grid is based on a security concept that requires the setup, maintenance, and deployment of a virtual organisation based on trust management. To do so you need to carefully read the documentation provided at the Globus toolkit Web pages. Please follow this link to the binary distributions of the toolkit:
However, before you install any of them it is important that you read and understand the restrictions for each bundle based on the type you like to install. AN extensive set of documentation is available from
Next we describe how to set up a Grid with three workstations. Two of the workstations have Grid services installed, while the third machine has not. We show how we can through the CoG Kit easily execute tasks such as executing a program or transferring files to the machines.
We proceed with the following steps:
- download a binary installation
- install a binary installation
- set up a simple ca
- create host certificates for the two servers
- create user certificates for a number of users
- set up use privileges for the services
- install the Java CoG Kit on the client machine
- execute a simple job submission with the CoG Kit to both servers
- execute a simple file transfer with the CoG Kit to both servers
![[ ]](/images/task.png "Regular task"){kind=small}
Please create for each item above a subsection and fill it out with sufficient detail so others can replicate it. If additional steps need to be done, please include them. You can refer to existing documentation, but must be somewhat specific with links to the appropriate subsection of the GT documentation. Assigned to (Guru)
Proxy Certificate Generation
The Globus Toolkit contains three different formats of the proxy certificate
- 1. Globus "legacy" proxy available prior to GT v2.*
- 2. Globus proxy (non rfc-compliant) available in GT v2.* and later releases
- 3. RFC-compliant proxy available in GT v4.* http://www.faqs.org/rfcs/rfc3820.html
Pre-GT2.* servers require the Globus legact proxy. Servers in GT2.* and beyond work only with the non-rfc-compliant proxy. Servers in GTv4 work with both, rfc-compliant and non-compliant proxies.
The Different types of proxy certificates can be generated as follows:
$> grid-proxy-init 1) with -old - generates 'globus legacy proxy' (since gt2) 2) with -rfc - generates 'rfc complaint proxy' (since gt4) 3) without any switch - generates 'pre-rfc proxy' (since gt3)
Grid-Proxy-Init Command Line
Invoke grid-proxy-init from the cog/dist/<cog_version>/bin directory after compiling cog by running ant dist. This prompts you for your grid passphrase which you had used to create your certificate. There are other params that can be used to increase the lifetime of your proxy. Please use the -help option to find out what options are available.
$ ./grid-proxy-init CYGWIN_NT-5.1 Your identity: DC=org,DC=doegrids,OU=People,CN=Albert 897935 Enter GRID pass phrase for this identity: Creating proxy, please wait... Proxy verify OK Your proxy is valid until Sat Apr 29 02:22:18 CDT 2006
Grid-Proxy-Init GUI based
Invoking cog-proxy-init would startup the gui based proxy init in cog/dist/<cog_version>/bin directory. Enter the password here and choose the appropriate options.
The options button shows the option panel as below
Setting up a Distributed Environment with SSH Services
This document will explain how to use three machines to which you can connect via ssh. We demonstrate how two of the machines can be used as servers and the third as a client.
assigned to (GATeam)
Using a Single Computer without a Grid
This example demonstrates what you can do to use the Java CoG Kit workflow system without installing a Grid.
assigned to (Guru)
