UK quite advanced. Sites with PBS will have to switch to something else.
    Alessandra will follow progress for UK (also coordinating for the rest of ATLAS).
    31/01: RALPP is moving to CentOS7-only. Elena will check queues.
    14/02: Elena switched RALPP UCORE PanDA queue from SL6 to CentOS7. Analysis C7 queue still has problems.
    Kashif: Oxford has 2/3 of worker nodes moved to C7 queue. Can delete SL6 queues in a few weeks' time.
    Vip: Jeremy has a web page with progress, https://www.gridpp.ac.uk/wiki/Batch_system_status . We should keep that up to date, but also need to monitor progress for ATLAS migration.
    28/02: At Vip's request, during the meeting Elena disabled UKI-SOUTHGRID-OX-HEP_CLOUD, UKI-SOUTHGRID-OX-HEP_UCORE, ANALY_OX_TEST, and UKI-SOUTHGRID-OX-HEP_TEST. Just have CentOS7 queues, UKI-SOUTHGRID-OX-HEP_SL7_UCORE and ANALY_OX_SL7.
    21/03: Glasgow still to do.
    28/03: Sheffield aim for deadline, which Alessandra confirmed was 1st June.
    04/04: Alessandra: about to send out email to all ATLAS sites to request status updates on TWiki. Tool to identify CentOS7 sites doesn't work, so keep manual list.
    Status known for all UK sites except RHUL.
    Andy McNab needs to change image for VAC sites for CentOS7 and make sure Singularity is accessible.
    18/04: Vip said that Oxford has now completed migration of all WNs. Alessandra will delete the SL6 PanDA queues.
    Alessandra: we should press sites to put CentOS image live for VAC.
    Gareth: Glasgow using VAC as a method of building a new site with CentOS7 for ATLAS-only. Will then turn off SL6 VAC. Part of lots of work for the new data centre.
    02/05: Elena is working on new ARC-CE connected to new Condor farm at Sheffield (upgrading all in one go). Oxford provided example config for AGIS.
    Vip: will switch off SL6 for other VOs (ATLAS was done months ago).
    09/05: Elena: CentOS7 PanDA queues setup for Durham and Sheffield. Durham works, but Sheffield has problems with the ARC-CE.
    Vip: suggested this might be due to a problem with the certificates in grid-security. He will advise Elena.
    Elena disabled an old SL6 MCORE PanDA queue for Liverpool, which has no more SL6 workers.
    16/05: Alessandra: Waiting for news from Andrew McNab for VAC sites: Birmingham, Cambridge, UCL. Liverpool has switched VAC off.
    To do: RHUL, QMUL, Durham (Sam said they were working on it last week).
    Have two weeks till the 1st June deadline. Alessandra prefers not to have to open lots of tickets for UK sites.
    23/05: Glasgow: VAC queue can go over to CC7 whenever needed: production queues are still. CC6
        Issues observed with HTCondor-CE when trying to move production queues to CC7
        Unlikely to make June deadline.
        VAC upgrade for cc7 ready at Manchester
    30/05: Sheffield arcproxy crashing with new ARC-CE and Centos-7 (understood + fixed after the meeting)
        Glasgow will move VAC when new VMs are ready
    06/06: Alessandra had sent a mail with link to table on progress: https://twiki.cern.ch/twiki/bin/view/AtlasComputing/CentOS7Deployment
        Deadline was 1st June. Elena asked sites to update at Ops meeting. No one responded so far.
        Alessandra changed status of 5 UK sites to "On Hold". 3 are VAC sites. She said is Andrew trying it at Manchester, but it doesn't seem to work yet. Seems to be a race condition but don't know where it comes from. Emailed Peter to look into it.
        Get VAC working at Manchester then roll it out at other sites.
        Alessandra asked Roger what to do about UCL, but didn't hear back after PMB.
        VAC still running on APF (and a special instance). Needs to move to Harvester. Peter should do it.
        Elena asked about problems with the ARC-CE at Sheffield. Alessandra will look at it.
        Elena is planning to make a list of PanDA queues for UK sites to see which old SL6 queues can be removed.
    13/06: RHUL is lacking stuff and it's unknown when they move to CentOS7.
    20/06: Alessandra: VAC now working at Manchester. Andrew needs to write instructions, and will send to Birmingham and Cambridge.
        Gareth: please send also to Glasgow. Still have 1000 cores VAC.
        Alessandra: RHUL and UCL on hold. Sheffield still in progress (Elena will work on this; aim for 30 June completion).
        Glasgow close to a working system so probably do better than previous 31 July  estimate.
        Sussex on hold till sysadmin available.
        All sites can upgrade to Singularity 3.2.1.

27/06: Elena: Sheffield in progress. Gareth: Glasgow has 1000 VAC cores ready, HC next week. Vip: everything apart from pool nodes are now on Centos7.