pen Standard CIM anagement for Xen Gareth S. Bestor Fehlig

Transcription

1 pen Standard CIM anagement for Xen Gareth S. Bestor Fehlig

2 t is the Common Information M tem management is hard! Huge vendor investment to maintain custom narrow management stacks for their products Minimal interoperability with other vendors' managem CIM advantage: Functional model-based management infrastructure vendor s implementation More expressive than SNMP; e.g. object relationship Insulates management front-end from vendor implem Enables vendors to participate in heterogeneous Da is increasingly being adopted across the IT Widely used in storage management (SNIA)

3 tributed Management Task Forc ndards Organization TF oversees the standardization of CIM mod ge and certification Membership includes most major IT companies: IBM Intel, AMD, Unisys, XenSource, EMC/VMWare, Micr Working Groups focus on modeling Virtualization, Cl Networks, Security, Desktop/Mobile,... lishes CIM protocol standards documents: DSP0004 CIM Infrastructure Specification DSP0201 Representing CIM in XML DSP0134 SMBIOS Specification

4 CIM Management Stack lient nslate management commands CIM-XML M (CIM Object Manager) tens for incoming CIM requests okes the CIM provider for the quested CIM class(es) marshals incoming CIM-XML o CIM objects rshals provider results into M-XML to stream back to client roviders plements CIM ops against the

5 Models - CIM_ComputerSystem tances represent various components: ical devices, I/O controllers, rating system objects. processes, daemons) r runtime mgmt services sociations show relationships n objects ribe topology of entire subems and their components ss hierarchy lass instances and associations specific implementation

6 Class Definition (MOF) - CIM_Fa (c) 2005 DMTF. All rights reserved. ========================================================== ========================================================== 2.6.0" ), Description ( ilities and management of a Fan CoolingDevice.")] : CIM_CoolingDevice { ion ( cation of whether the fan supports variable speeds.")] ariablespeed; ion ( iredspeed is the currently requested fan speed, defined " evolutions per Minute, when a variable speed fan is " ported (VariableSpeed boolean = TRUE). The current speed " etermined via a sensor (CIM_Tachometer) that is " ociated with the Fan using the CIM_AssociatedSensor " ionship."), Revolutions per Minute" )] iredspeed; ion ( uests that the Fan speed be set to the value specified " he method's input parameter. The return value should be " the request was successfully executed, 1 if the " est is not supported and some other value if an error " urred. In a subclass, the set of possible return codes " ld be specified, using a ValueMap qualifier on the " hod. The strings to which the ValueMap contents are "

7 Open Source Xen-CIM Project laboration established at January '06 Xen S Source, IBM, Novell, Unisys and others to d agement instrumentation for Xen. n Source implementation of the DMTF Syst ualization Model for Xen General model for managing virtual systems being d EMC/VMWare, Microsoft, Sun, HP and others Work in progress; will first appear in CIM Schema v2 Driving new Xen API requirements; e.g. managing in -CIM is the first working (partial) implement

8 -CIM Model of Dom0 and DomUs rsystem (CS) ng system Dom0 t DomUs evice CPU, RAM, disks, NICs U CPU, RAM, disks, NICs evice (association) h LogicalDevice with its putersystem eallocationsettingdata specific settings for the lized LogicalDevices model mirrors Host CS

9 U Creation and Lifecycle Mana ualizationmanagementservice: efinevirtualsystem() registers a new DomU con pass in array of CPU, memory, disk & NIC settings estroyvirtualsystem() removes DomU config cycle operations are initiated via CIM s exist putersystem RequestStateChange() meth SC(Enabled) = start/resume the DomU SC(Disabled) = stop the DomU (but retain its con SC(Quiesce) = pause SC(Enabled but Offline) = suspend

10 U State Transition Diagram

11 U Resource Allocation & Resou sources aggregated into pools U s, memory pool, virtual NIC pool,... creation allocates resources from the riate pool(s) rce allocation for virtual device is t from virtual device itself n_processor vs Xen_ProcessorRASD ws non-virtual aware CIM client to nage virtual systems exactly like sical systems xibility in how virtual systems' CIM

12 Instance Diagram - Active Dom

13 Plumbing: Xend API, libvirt & x inal IBM LTC CIM providers written to a cus omu config stored in xenstore o support for reading & writing xm config files o support for DomUs created via xm! -CIM providers ported to libvirt via temporar tub to read & write DomU config as XML file ustom code to list inactive domains (unknown to x ibvirt backend to xend, xenstore & hypervisor as n lacing shim with direct calls to Ewan's new

14 -CIM Status and Roadmap t 2006: Partial implementation of the draft D ualization Model using libvirt 2006: Full implementation of the published ualization Model using the new Xen API 7: Shipped in SLES10 SP1 & user-addon to aining and ongoing tasks: xpose more Xen resource types xpose DomU scheduling functions upport resource reallocation; e.g. memory balloon

15 ful Links IM Wiki (under construction) ://wiki.xensource.com/xenwiki/xencim ards Based Linux Instrumentation for Manageabil :// WBEM CIMOM :// Pegasus CIMOM :// Management with CIM Project ://developer.novell.com/wiki/index.php/omc utorials ://developer.novell.com/wiki/index.php/developer_primer_to_w