Changes between Initial Version and Version 1 of Doc/gLite/CernVM-FS

Timestamp:

Oct 28, 2011, 10:28:25 AM (13 years ago)

Author:

Victor Mendoza

Comment:

--

Doc/gLite/CernVM-FS

@@ +1 @@
+= CernVM-FS =
+
+[[TOC(inline)]]
+
+== Dependencies ==
+
+'''fuse''': file system in user space utilities are required
+
+== Repositories ==
+
+The repositories to be used can be defined with the following variable, but mind the [http://cernvm.cern.ch/portal/node/123 dependencies]:
+{{{
+variable CVMFS_REPOSITORIES ?= list(
+    'alice.cern.ch',
+    'atlas.cern.ch',
+    'atlas-condb.cern.ch',
+    'cms.cern.ch',
+    'lhcb.cern.ch',
+    'sft.cern.ch',
+);
+}}}
+
+== Cache Location ==
+
+The local cache is by default at /var/cache/cvmfs2, it can be relocated, e.g.:
+{{{
+variable CVMFS_CACHE_BASE ?= '/var/scratch/cvmfs';
+}}}
+
+== Cache Quota ==
+
+The client cache is limited to less than 32768 files by default.
+A per repository quota can added, e.g.:
+{{{
+variable CVMFS_QUOTA_LIMIT ?= 10000;
+}}}
+
+== Local Proxies ==
+
+The use of a local proxy is highly recommended. This variable is undefined by default and must be configured according to your location, e.g.:
+{{{
+variable CVMFS_HTTP_PROXY ?= 'http://SQUID_FQDN_01:3128;http://SQUID_FQDN_02:3128';
+}}}
+
+== Stratum 1 Mirror Servers ==
+
+Stratum 1 mirror servers should be sorted according to your location, this can be done by defining the variable:
+{{{
+variable CVMFS_SERVER_URL_CERN ?= nlist(
+    'URL-01-CERN', 'http://cvmfs-stratum-one.cern.ch:8000/opt/@org@',
+    'URL-02-UK', 'http://cernvmfs.gridpp.rl.ac.uk:8000/opt/@org@',
+    'URL-03-BNL', 'http://cvmfs.racf.bnl.gov:8000/opt/@org@',
+);
+}}}
+
+== Configuration ==
+
+The configuration is done by:
+{{{
+include {'features/cvmfs/config'};
+}}}
+
+All the above variables can be safely configured site or cluster wide, they will only be taken into account by object profiles with:
+{{{
+variable CVMFS_CLIENT_ENABLED ?= true;
+}}}
+
+'''WARNING''', if not using the standard Quattor NFS configuration, the CernVM-FS automount map (/etc/auto.cvmfs) must be added to /etc/auto.master by other means, e.g.: cvmfs-auto-setup
+
+== VO specificities ==
+
+'''WARNING''', carelessly redirecting a VO's software area towards CernVM-FS will cause all software installation jobs to fail, therefore the VO should be aware of the change.
+
+* ALICE
+
+  ... dunno ...
+
+* ATLAS
+
+  Follow [https://twiki.cern.ch/twiki/bin/viewauth/Atlas/CernVMFS these instructions]
+
+  The required ATLAS_LOCAL_AREA environment variable can defined using:
+{{{
+variable VO_ATLAS_LOCAL_AREA ?= '/path/to/shared/ATLAS/area';
+}}}
+
+* CMS
+
+  '''WARNING''', quoting CMS:
+{{{
+This service is not stable enough to use in production. (2011/06/07)
+}}}
+
+  The CMS_LOCAL_SITE can be configured using:
+{{{
+variable VO_CMS_LOCAL_SITE ?= 'T2_FR_GRIF_subsite-name';
+}}}
+
+* LHCb
+
+  Let the VO know about the change through a GGUS ticket.
+
+  Redirect the software area (VO_LHCB_SW_DIR) to /cvmfs/lhcb.cern.ch
+
+== Cleanup Script ==
+
+An optional cleanup script can be enabled with:
+{{{
+variable CVMFS_ENABLE_CLIENT_CLEANUP ?= true;
+}}}
+
+== Links ==
+
+* [http://cernvm.cern.ch/portal/startcvmfs CernVM-FS home]
+* [http://cernvm.cern.ch/portal/techinfo CernVM-FS Technical Report]
+* [http://cernvm.cern.ch/portal/cvmfs/release-2.0 CernVM-FS 2.0 Release Notes]