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Before considering an upgrade to OSG 3.6…

OSG 3.6 is under active development and is not currently supported for production use.

Due to potentially disruptive changes in protocols, contact your VO(s) to verify that they support token-based authentication and/or HTTP-based data transfer before considering an upgrade to OSG 3.6. If your VO(s) don't support these new protocols or you don't know which protocols your VO(s) support, install or remain on the OSG 3.5 release series

Updating to OSG 3.6

OSG 3.6 (the new series) is a major overhaul of the OSG software stack compared to OSG 3.5 (the old series) with changes to core protocols used for authentication and data transfer. Depending on the VO(s) that you support, updating to the new series could result in issues with your site receiving pilot jobs and/or issues with data transfer.

If you have verified that your VO(s) support token-based pilot submission and HTTP-based data transfers, use this document to update your OSG software to OSG 3.6.

Updating Your OSG Compute Entrypoint

Before considering an upgrade to OSG 3.6…

OSG 3.6 is under active development and is not currently supported for production use.

Due to potentially disruptive changes in protocols, contact your VO(s) to verify that they support token-based authentication and/or HTTP-based data transfer before considering an upgrade to OSG 3.6. If your VO(s) don't support these new protocols or you don't know which protocols your VO(s) support, install or remain on the OSG 3.5 release series

In OSG 3.6, OSG Compute Entrypoints (CEs) only accept token-based pilot job submissions. If you need to support token-based and GSI proxy-based pilot job submission, you must install or remain on OSG 3.5. If the VOs that you support have the capability to submit token-based pilots, you may update your CE to OSG 3.6.

In addition to the change in authentication protocol, OSG 3.6 CEs include new major versions of software that require manual updates. To upgrade your CE to OSG 3.6, follow the sections below to make your configuration OSG 3.6-compatible.

Turning off CE services

  1. Register a downtime
  2. During the update, turn off the following services on your HTCondor-CE host:

    [email protected] # systemctl stop condor-ce
    [email protected] # systemctl stop gratia-probes-cron
    
  3. Run the command corresponding to your batch system to upload any remaining accounting records to the GRACC:

    If your batch system is... Then run the following command...
    HTCondor /usr/share/gratia/condor/condor_meter
    LSF /usr/share/gratia/lsf/lsf
    PBS /usr/share/gratia/pbs-lsf/pbs-lsf_meter.cron.sh
    SGE /usr/share/gratia/sge/sge_meter.cron.sh
    Slurm /usr/share/gratia/slurm/slurm_meter -c
  4. Disable the gratia-probes-cron service:

    [email protected] # systemctl disable gratia-probes-cron
    

Updating CE packages

After turning off your CE's services, you may proceed with the RPM update process.

  1. First, remove the old series Yum repositories:

    [email protected] # rpm -e osg-release
    

    This step ensures that any local modifications to *.repo files will not prevent installing the new series repos. Any modified *.repo files should appear under /etc/yum.repos.d/ with the *.rpmsave extension. After installing the new OSG repositories (the next step) you may want to apply any changes made in the *.rpmsave files to the new *.repo files.

  2. Update your Yum repositories to OSG 3.6

  3. Clean yum cache:

    [email protected] # yum clean all --enablerepo=*
    
  4. Update software:

    [email protected] # yum update
    

    Warning

    • Please be aware that running yum update may also update other RPMs. You can exclude packages from being updated using the --exclude=[package-name or glob] option for the yum command.
    • Watch the yum update carefully for any messages about a .rpmnew file being created. That means that a configuration file had been edited, and a new default version was to be installed. In that case, RPM does not overwrite the edited configuration file but instead installs the new version with a .rpmnew extension. You will need to merge any edits that have made into the .rpmnew file and then move the merged version into place (that is, without the .rpmnew extension). Watch especially for /etc/lcmaps.db, which every site is expected to edit.

Updating CE configuration

Gratia Probe

The OSG 3.6 release series contains Gratia Probe 2, which uses the non-root HTCondor-CE probe to account for your site's resource contributions. To ensure that your contributions continue to be properly accounted for, verify that your HTCondor-CE's PER_JOB_HISTORY_DIR is set to /var/lib/condor-ce/gratia/data:

[email protected] # condor_ce_config_val -v PER_JOB_HISTORY_DIR
PER_JOB_HISTORY_DIR = /var/lib/condor-ce/gratia/data
# at: /etc/condor-ce/config.d/99_gratia-ce.conf, line 5
# raw: PER_JOB_HISTORY_DIR = /var/lib/condor-ce/gratia/data
  • If you see the above output, your Gratia Probe configuration is correct and you may continue onto the next section.

  • If you do not see the above output, visit the file listed in the output of condor_ce_config_val, remove the offending value, and repeat until the proper value is returned.

OSG-Configure

The OSG 3.6 release series contains OSG-Configure 4, a major version upgrade from the previously released versions in the OSG. See the OSG-Configure 4.0.0 release notes for an overview of the changes. Several configuration modules and options were removed or deprecated and CE configuration has been simplified; the update from version 3 to version 4 will require some manual changes to your configuration.

To update OSG-Configure, perform the following steps:

  1. Merge any *.rpmnew files in /etc/osg/config.d/

  2. Uninstall osg-configure-gip and osg-configure-misc if they are installed:

    [email protected]# yum erase osg-configure-gip osg-configure-misc
    
  3. If /etc/osg/config.d/30-gip.ini.rpmsave exists, merge its contents into 31-cluster.ini

  4. Edit the Site Information configuration section (in 40-siteinfo.ini):

    • If resource_group is not set, add:

          resource_group = <TOPOLOGY RESOURCE GROUP FOR THIS HOST>
      
    • Delete the following attributes:

      • sponsor
      • `site_policy
      • contact
      • email
      • city
      • country
      • latitude
      • longitude
  5. Run osg-configure to apply your changes:

    osg-configure -dc
    

HTCondor-CE

The OSG 3.6 release series contains HTCondor-CE 5, a major version upgrade from HTCondor-CE 4, which was available in the OSG 3.5 release repositories. To update HTCondor-CE, perform the following steps:

  1. If you support the OSG or GLOW VOs and map their jobs to non-standard local Unix accounts (e.g., not osg and glow, respectively) add SciTokens mappings to a file in /etc/condor-ce/mapfiles.d/:

    # OSG
    SCITOKENS /^https\:\/\/scitokens\.org\/osg\-connect,/ osg
    # GLOW
    SCITOKENS /^https\:\/\/chtc\.cs\.wisc\.edu,/ glow
    

    Replacing osg and glow with the local Unix account for the OSG and GLOW VOs, respectively.

  2. Also consult the upgrade documentation for other required configuration updates.

For OSG CEs serving an HTCondor pool

If your OSG CE routes pilot jobs to a local HTCondor pool, also see the section for updating your HTCondor hosts

Starting CE services

After updating your RPMs and updating your configuration, turn on the HTCondor-CE service:

[email protected] # systemctl start condor-ce

!!! question "What about gratia-probes-cron? In OSG 3.6, the OSG CE no longer needs a separate service for Gratia Probe. Instead, the default CE configuration runs its Gratia Probe as a periodic process under the HTCondor-CE process tree.

Updating Your HTCondor Hosts

Before considering an upgrade to OSG 3.6…

OSG 3.6 is under active development and is not currently supported for production use.

Due to potentially disruptive changes in protocols, contact your VO(s) to verify that they support token-based authentication and/or HTTP-based data transfer before considering an upgrade to OSG 3.6. If your VO(s) don't support these new protocols or you don't know which protocols your VO(s) support, install or remain on the OSG 3.5 release series

  1. The following OSG specific configuration was dropped in anticipation of HTCondor's new secure by default configuration coming in HTCondor version 9.0. HTCondor's 9.0 recommended security configuration requires authentication for all access (including read access).

    CONDOR_HOST = $(FULL_HOSTNAME)
    DAEMON_LIST = COLLECTOR, MASTER, NEGOTIATOR, SCHEDD, STARTD
    
    # require authentication and integrity for everything...
    SEC_DEFAULT_AUTHENTICATION=REQUIRED
    SEC_DEFAULT_INTEGRITY=REQUIRED
    
    # ...except read access...
    SEC_READ_AUTHENTICATION=OPTIONAL
    SEC_READ_INTEGRITY=OPTIONAL
    
    # ...and the outgoing (client side) connection since the server side will enforce its policy
    SEC_CLIENT_AUTHENTICATION=OPTIONAL
    SEC_CLIENT_INTEGRITY=OPTIONAL
    
    # this will required PASSWORD authentications for daemon-to-daemon, and
    # allow FS authentication for submitting jobs and running administrator commands
    SEC_DEFAULT_AUTHENTICATION_METHODS = FS, PASSWORD
    SEC_DAEMON_AUTHENTICATION_METHODS = PASSWORD
    SEC_NEGOTIATOR_AUTHENTICATION_METHODS = PASSWORD
    SEC_PASSWORD_FILE = /etc/condor/passwords.d/POOL
    
    # admin commands (e.g. condor_off) can be run by:
    #  1. root on the local host or the central manager
    #  2. condor user on the local host or the central manager
    ALLOW_ADMINISTRATOR = [email protected]*/$(FULL_HOSTNAME) [email protected]*/$(CONDOR_HOST) [email protected]*/$(FULL_HOSTNAME) [email protected]*/$(CONDOR_HOST)  [email protected]$(UID_DOMAIN)/$(FULL_HOSTNAME)
    # only the condor daemons on the central manager can negotiate
    ALLOW_NEGOTIATOR = [email protected]*/$(CONDOR_HOST) [email protected]*/$(CONDOR_HOST)
    # any authenticated daemons in the pool can read/write/advertise
    ALLOW_DAEMON = [email protected]* [email protected]*
    
  2. Manual intervention may be required to upgrade from the HTCondor 8.8 series to HTCondor 9.0.x. Please consult the HTCondor 9.0 upgrade instructions.

  3. If you are upgrading from the HTCondor 8.9 series (8.9.11 and earlier), please consult the Upgrading to 9.0 instructions

Getting Help

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