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VOMS : Virtual Organisation Membership Service
A VOMS adds permissions to your identity, allowing you to use services on the grid.
Quickstart :
- Register in VO with your personal certificate
- Copy personal certificate to
$HOME/.globus/user[cert,key].pem
- Create a proxy :
voms-proxy-init --voms (e.g. sagrid)
{% highlight bash %} voms-proxy-init --voms sagrid Your identity: /C=IT/O=INFN/OU=Personal Certificate/L=ZA-MERAKA/CN=Bruce Becker Creating temporary proxy ................................................... Done Contacting voms.sagrid.ac.za:15001 [/C=IT/O=INFN/OU=Host/L=ZA-UFS/CN=voms.sagrid.ac.za] "sagrid" Done Creating proxy .................................. Done Your proxy is valid until Tue Dec 15 05:46:27 2015 {% endhighlight %} - Check that the proxy is still valid :
voms-proxy-info --all
{% highlight bash %} subject : /C=IT/O=INFN/OU=Personal Certificate/L=ZA-MERAKA/CN=Bruce Becker/CN=proxy issuer : /C=IT/O=INFN/OU=Personal Certificate/L=ZA-MERAKA/CN=Bruce Becker identity : /C=IT/O=INFN/OU=Personal Certificate/L=ZA-MERAKA/CN=Bruce Becker type : proxy strength : 1024 bits path : /tmp/x509up_u500 timeleft : 11:56:53 key usage : Digital Signature, Key Encipherment, Data Encipherment === VO sagrid extension information === VO : sagrid subject : /C=IT/O=INFN/OU=Personal Certificate/L=ZA-MERAKA/CN=Bruce Becker issuer : /C=IT/O=INFN/OU=Host/L=ZA-UFS/CN=voms.sagrid.ac.za attribute : /sagrid/Role=NULL/Capability=NULL timeleft : 11:56:53 uri : voms.sagrid.ac.za:15001 {% endhighlight %}
In order to register to a Virtual Organisation, you need a personal certificate from a [trusted Certificate Authority]( {{ site_url }}/CertificateAuthorities ). There are several VO's supported - see a full list at the EGI Operations Portal
Attributes define what permissions you have. These are added to a proxy of your personal certificate by the VOMS.