1. Hands-on on Information System
Carlos Fuentes
RedIRIS
Barcelona, 14th-16th Abril 2008

2. Querying the Information System
In order to query directly the IS elements two high level tools are provided:
These tools should be enough for most common user needs and can be used to hide the complexity of raw LDAP queries.
lcg-infosites
lcg-info

3. This tool provides information related to Grid services:
lcg-infosites
This tool provides information related to Grid services:
lcg-infosites --vo <your_vo> option –-is <your_bdii>
It’s mandatory to include the vo and the option
The --is option specifies the BDII you want to query
If not supplied, the BDII defined into the environment variable LCG_GFAL_INFOSYS will be used

4. lcg-infosites - optionsce
Number of CPUs, running and waiting jobs and names of the CEs se
SEs names together with the available and used space
closeSE
Names of the CEs where the user’s VO is allowed to run together with their corresponding closest SEs
lfc
Name of the lfc Catalog for the user’s VO
tag
Name of the tags relative to the software installed in site with the corresponding CE is
Name of the BDII which the user wants query
help
Prints all the available options and exit
all
It groups all the features just described

5. Please set the environment variable:
Initial Step
Please set the environment variable:
export LCG_GFAL_INFOSYS=grid004.ct.infn.it:2170

6. Obtaining information about CE
Exercise 1
Obtaining information about CE

7. lcg-infosites --vo gilda ce
valor del bdii: mnto04.uniandes.edu.co:2170
***********************************************************************************************
#CPU Free Total Jobs Running Waiting ComputingElement
grid004.iucc.ac.il:2119/jobmanager-lcgpbs-long
cn01.be.itu.edu.tr:2119/jobmanager-lcglsf-long
dgt01.ui.savba.sk:2119/jobmanager-lcgpbs-long
grid004.iucc.ac.il:2119/jobmanager-lcgpbs-short
cn01.be.itu.edu.tr:2119/jobmanager-lcglsf-short
dgt01.ui.savba.sk:2119/jobmanager-lcgpbs-short
grid010.ct.infn.it:2119/jobmanager-lcgpbs-long
....

8. Obtaining information about SE
Exercise 2
Obtaining information about SE

9. lcg-infosites - 2 lcg-infosites --vo gilda se
Avail Space(Kb) Used Space(Kb) Type SEs
n.a grid005.iucc.ac.il
n.a egee016.cnaf.infn.it
n.a grid038.ct.infn.it
n.a aliserv6.ct.infn.it
n.a gilda02.lcca.usp.br
n.a testbed005.cnaf.infn.it
n.a gildase01.roma3.infn.it
n.a trigrid-ce01.unime.it

10. Exercise 3
Listing the closeSE

11. lcg-infosites --vo gilda closeSE
valor del bdii: mnto04.uniandes.edu.co:2170
Name of the CE: grid010.ct.infn.it:2119/jobmanager-lcgpbs-long
aliserv6.ct.infn.it
grid038.ct.infn.it
Name of the CE: grid011f.cnaf.infn.it:2119/jobmanager-lcgpbs-long
testbed005.cnaf.infn.it
egee016.cnaf.infn.it
Name of the CE: gilda03.lcca.usp.br:2119/jobmanager-lcgpbs-long
gilda02.lcca.usp.br
Name of the CE: grid010.ct.infn.it:2119/jobmanager-lcgpbs-short

12. Obtaining information about software
Exercise 4
Obtaining information about software

13. lcg-infosites --vo gilda tag
**************************************************************
Information for gilda relative to their software tags included
in each CE
Name of the TAG: VO-gilda-GEANT
Name of the TAG: VO-gilda-GKS05
Name of the CE:cn01.be.itu.edu.tr
Name of the TAG: VO-gilda-slc3_ia32_gcc323
Name of the TAG: VO-gilda-CMKIN_5_1_1
Name of the CE:grid010.ct.infn.it
....

14. This tool allows the users to query, in a deeper way, the BDII
lcg-info
This tool allows the users to query, in a deeper way, the BDII
It requires the environment variable LCG_GFAL_INFOSYS to be set to the value of the BDII to be queried
e.g. grid004.ct.infn.it:2170
Prints the list of the CEs or SEs satisfying a given query along with a list of specified attributes.

15. The query syntax is like this: attr1 op1 valueN, ... attrN opN valueN
lcg-info
The query syntax is like this:
attr1 op1 valueN, ... attrN opN valueN
where attrN is an attribute name
op is =, >= or <=, and the cuts are ANDed
A combination of attribute is supported
The cuts are comma-separated and spaces are not allowed
SINCE THE LATEST GLUE-SCHEMA UPDATE ONLY “=“ OPERATOR IS SUPPORTED!

16. lcg-info options --list-attrs
Prints a list of attributes that can be queried.
--list-ce
Lists the CEs which satisfy a query, or all the CEs if no query is given.
--list-se
Lists the SEs which satisfy a query, or all the SEs if no query is given.
--query
Restricts the output to the CEs (SEs) which satisfy the given query.
--bdii
Allows to specify a BDII in the form <hostname>:<port>. If not given, the value of the environmental variable LCG_GFAL_INFOSYS is used. If that is not defined, the command returns an error.
--sed
Print the output in a "sed-friendly" format.
--attrs
Specifies the attributes whose values should be printed.
--vo
Restricts the output to CEs or SEs where the given VO is authorized. Mandatory when VO-dependent attributes are queried upon.

17. List all the attributes
Exercise 1
List all the attributes

18. lcg-info --list-attrs
Attribute name Glue object class Glue attribute name
MaxTime GlueCE GlueCEPolicyMaxWallClockTime
CEStatus GlueCE GlueCEStateStatus
TotalJobs GlueCE GlueCEStateTotalJobs
CEVOs GlueCE GlueCEAccessControlBaseRule
TotalCPUs GlueCE GlueCEInfoTotalCPUs
FreeCPUs GlueCE GlueCEStateFreeCPUs
CE GlueCE GlueCEUniqueID
WaitingJobs GlueCE GlueCEStateWaitingJobs
RunningJobs GlueCE GlueCEStateRunningJobs
CloseCE GlueCESEBindGroup GlueCESEBindGroupCEUniqueID
CloseSE GlueCESEBindGroup GlueCESEBindGroupSEUniqueID
SEVOs GlueSA GlueSAAccessControlBaseRule
UsedSpace GlueSA GlueSAStateUsedSpace
AvailableSpace GlueSA GlueSAStateAvailableSpace
Type GlueSE GlueSEType
SE GlueSE GlueSEUniqueID
Protocol GlueSEAccessProtocol GlueSEAccessProtocolType

19. Listing tags of installed software
Exercise 2
Listing tags of installed software

20. lcg-info --list-ce --attrs Tag
- CE: gilda03.lcca.usp.br:2119/jobmanager-lcgpbs-infinite
- Tag LCG-2
LCG-2_1_0
LCG-2_1_1
LCG-2_2_0
LCG-2_3_0
LCG-2_3_1
LCG-2_4_0
LCG-2_6_0
GLITE-3_0_0
AFS
CMS-1.1.0
ATLAS-6.0.4
GATE
LHCb-1.1.1
IDL-5.4
CMSIM-125
ALICE
ALIEN

21. Listing all the CEs with their FreeCPUs and TotalJobs attributes
Exercise 3
Listing all the CEs with their FreeCPUs and TotalJobs attributes

22. lcg-info --list-ce --attrs FreeCPUs,TotalJobs
- CE: gilda03.lcca.usp.br:2119/jobmanager-lcgpbs-infinite
- FreeCPUs
- TotalJobs
- CE: gilda03.lcca.usp.br:2119/jobmanager-lcgpbs-long
- CE: gilda03.lcca.usp.br:2119/jobmanager-lcgpbs-short
- CE: gildace01.roma3.infn.it:2119/jobmanager-lcgpbs-infinite

23. Exercise 4
List FreeCPUs and TotalJobs attributes of all the CEs that have TotalCPUs=10

24. lcg-info --list-ce --attrs FreeCPUs,TotalJobs --query TotalCPUs=10
- CE: grid004.iucc.ac.il:2119/jobmanager-lcgpbs-infinite
- FreeCPUs
- TotalJobs
- CE: grid004.iucc.ac.il:2119/jobmanager-lcgpbs-long
- CE: grid004.iucc.ac.il:2119/jobmanager-lcgpbs-short

25. Questions …