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IPv6 Testbed @ CERN. Andrew Elwell Dusan Klinek Hepix IPv6 meeting Oct 2012. Overview. Openlab Summer Student ( Dusan Klinek ) Testbed machines Code debugging Patches back upstream Outstanding issues EMI ( cern ) roadmap for next year VM Migration to dual stack.

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ipv6 testbed @ cern

IPv6 Testbed @ CERN

Andrew Elwell

DusanKlinek

Hepix IPv6 meeting Oct 2012

overview
Overview
  • Openlab Summer Student (DusanKlinek)
    • Testbed machines
    • Code debugging
    • Patches back upstream
    • Outstanding issues
  • EMI (cern) roadmap for next year
    • VM Migration to dual stack

EMI IPv6 Testbed

HEPIX IPv6 Meeting, Oct 2012

step 1 build your testbed
Step 1: Build your testbed
  • Using CERN Hyper-V + SL5/6
  • IPv4 static DHCP (registered in DNS)
  • Manual addition of IPv6 information to /etc/sysconfig/network-scripts/ifcfg-eth0
  • Manual reverse DNS
  • gtv6-emi[01-20].cern.ch

EMI IPv6 Testbed

HEPIX IPv6 Meeting, Oct 2012

step 2 install middleware
Step 2: Install Middleware
  • Site BDII (gtv6-emi03)
  • VOMS (gtv6-emi06)
  • Myproxy (gtv6-emi08)
  • UI (dklinek-ipv6-02)
  • Nagios (gtv6-emi02)*
  • L&B (gtv6-emi12) [not tested – no WMS]

EMI IPv6 Testbed

HEPIX IPv6 Meeting, Oct 2012

slide5

ARGUS (gtv6-emi13)

  • DPM (gtv6-emi04, gtv6-emi14)
  • LFC (gtv6-emi07)
  • FTS (gtv6-emi11)
  • CE (emi-ipv6-ce)
  • WN (gtv6-emi05) (torque)

EMI IPv6 Testbed

HEPIX IPv6 Meeting, Oct 2012

step 3 run jobs
Step 3: Run Jobs?
  • BDII – Yaimconfig bound slapd to ipv4 only
    • Fixed upstream and released
  • Storage
    • SRM uses gSOAP which binds to 0.0.0.0 only
    • If AAAA present, client fails without retrying v4
    • Patching possible, but would fork EMI (2.7.16) ver.
  • FTS
    • Oracle issues
    • Case sensitivity

EMI IPv6 Testbed

HEPIX IPv6 Meeting, Oct 2012

slide7

UI – glite-ce-job-* fail if no AAAA record present for target on a dual stack UI

  • Bug in ARES – not trapping ARES_ENODATA and failing with resolver internal error
  • Works with patch to glite-lbjp-common-gss

EMI IPv6 Testbed

HEPIX IPv6 Meeting, Oct 2012

development tooling
Development / Tooling
  • Summary of work done by Dusan

EMI IPv6 Testbed

HEPIX IPv6 Meeting, Oct 2012

where next
Where Next?
  • Expand testbed VM count slightly
    • New EGI rc releases will be installed on these hosts (dual stack)
    • If issues – check if v6 related
      • Override DNS, iptables, network tracing etc.
      • Will mean hassling network people (HINT – LanDB!)
  • Existing test instances won't be changed
    • No retrofit of IPv6

EMI IPv6 Testbed

HEPIX IPv6 Meeting, Oct 2012

slide10
TODO
  • Check VOMS config
  • Expand storage pools in DPM
  • Integrate with simple BDII editor?
  • Monitor ALL THE THINGS

The EMI Project is partially funded by the EU grant RI-261611

EMI IPv6 Testbed

HEPIX IPv6 Meeting, Oct 2012