ComputingMinimalisticSite < Main

---+ Site-wide considerations

If you want to deploy a low-maintenance site or cloud site, you will want to skip a lot of steps that big sites usually want to go through. Bla bla bla

You definitely don't want to use GUMS. Too much operational overhead for a small/temporary site. edg-mkgridmap will do a good job here. It's also a good idea to cron a daily rsync from the /etc/grid-security/grid-mapfile in the CE to a NFS area. This way you only need to maintain it in a single place. Clients will read from there. If you have a simpler way to distribute it or just a very easy way to deploy edg-mkgridmap (puppet?) it might be worth to save all the iops in the NFS.


---++ gLexec

Probably one of the most important points. The trickiest part is to make this work with grid-mapfile instead of GUMS. Basically use the rule 3 of the default configuration, or :

<verbatim>

osg_default:
## Policy 3: grid-mapfile
gridmapfile -> posix_enf

glexec:
## Policy 3: grid-mapfile
verifyproxy -> gridmapfile
gridmapfile -> glexectracking

</verbatim>

In /etc/lcmaps.db

You will also want to point your gridmapfile to an unusual place, probably the NFS so you don't need to maintain edg-mkgridmap in all nodes :

<verbatim>
gridmapfile = "lcmaps_localaccount.mod"
              "-gridmap /nfs/system/common/hep-node/config/files/grid-mapfile"
</verbatim>

-- Main.samir - 2015-02-12

This topic: Main > ComputingMinimalisticSite
Topic revision: r1 - 2015-02-12 - samir

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