DAS CMS Operations

Here we outline CMS specific operations to build/install and maintain DAS system. Please note, all instructions below refer to $DAS_VER as DAS version.

Building RPM

For generic CMS build procedure please refer to this page. We build SLC5 RPMs on vocms82 build node using 64-bit architecture. Here is a list of build steps:

# clean the area
rm -rf bin bootstraptmp build BUILD cmsset_default.* \
    common RPMS slc5_amd64_gcc434 SOURCES SPECS SRPMS tmp var

cvs co -r dg20091203b-comp-base CMSDIST
cvs update -r 1.59 CMSDIST/python.spec

# update/modify appropriate spec's, e.g.
# cvs up -A CMSDIST/das.spec

# perform the build
export SCRAM_ARCH=slc5_amd64_gcc434
PKGTOOLS/cmsBuild --architecture=$SCRAM_ARCH --cfg=./build.cfg

The build.cfg file has the following content:

assumeYes: True
onlyOnce: True
testTag: False
trace: True
tag: cmp
repository: comp
priority: -30
doNotBootstrap: True
repositoryDir: comp
[build das]
compilingProcesses: 6
workersPoolSize: 2
priority: -20
#[upload das]
#priority: 100
#syncBack: True

Build logs and packages are located in BUILD area. Once build is complete all CMS RPMs are installed under slc5_amd64_gcc434 area. Please verify that DAS RPMs has been installed. Once everything is ok, request from CERN operator to upload DAS RPMs into CMS COMP repository. It can be done using the following set of commands:

eval `ssh-agent -s`
ssh-add -t 36000
export SCRAM_ARCH=slc5_amd64_gcc434
PKGTOOLS/cmsBuild --architecture=$SCRAM_ARCH --cfg=./upload.cfg

where upload.cfg is similar to build.cfg with last three lines commented out.

Installing RPMs

DAS follows CMS build/install generic procedure. Here we outline all necessary steps to install CMS DAS RPMs into your area

export PROJ_DIR=/data/projects/das # modify accordingly
export SCRAM_ARCH=slc5_amd64_gcc434
export APT_VERSION=0.5.15lorg3.2-cmp
export V=$DAS_VER

mkdir -p $PROJ_DIR

wget -O$PROJ_DIR/bootstrap.sh http://cmsrep.cern.ch/cmssw/cms/bootstrap.sh
chmod +x $PROJ_DIR/bootstrap.sh
# perform this step only once
$PROJ_DIR/bootstrap.sh -repository comp -arch $SCRAM_ARCH -path $PROJ_DIR setup
source $SCRAM_ARCH/external/apt/$APT_VERSION/etc/profile.d/init.sh

apt-get update
apt-get install cms+das+$V

Updating RPM

Please following these steps to update DAS RPM in your area:

export PROJ_DIR=/data/projects/das
export SCRAM_ARCH=slc5_amd64_gcc434
export APT_VERSION=0.5.15lorg3.2-cmp
export V=$DAS_VER

source $SCRAM_ARCH/external/apt/$APT_VERSION/etc/profile.d/init.sh

apt-get update
apt-get install cms+das+$V


In order to run DAS installed via CMS RPMs you need to setup your environment. Here we provide a simple steps which you can follow to create a single setup.sh file and use it afterwards:

echo "ver=$V" > $PROJ_DIR/setup.sh
echo "export PROJ_DIR=$PROJ_DIR" >> $PROJ_DIR/setup.sh
echo "export SCRAM_ARCH=$SCRAM_ARCH" >> $PROJ_DIR/setup.sh
echo -e "export APT_VERSION=$APT_VERSION\n" >> $PROJ_DIR/setup.sh
echo 'source $SCRAM_ARCH/external/apt/$APT_VERSION/etc/profile.d/init.sh' >> $PROJ_DIR/setup.sh
echo 'source $PROJ_DIR/slc4_ia32_gcc345/cms/das/$ver/etc/profile.d/init.sh' >> $PROJ_DIR/setup.sh