XCP: The Art of Open Virtualization for the Enterprise and the Cloud
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The document discusses XCP (Xen Cloud Platform), an open-source virtualization software derived from XenServer, highlighting its compatibility across various operating systems and virtualization technologies. It covers installation methods, system requirements, and architecture, including dom0, driver domains, and stub domains, as well as future development plans. Useful links for obtaining and using XCP, as well as community resources, are also provided.
XCP: The Art of Open Virtualization for the Enterprise and the Cloud
- 1. XCP: The Art of Open Virtualization for the Enterprise and the Cloud LinuxCon Brazil 2011 Marcus Granado XenServer Performance R&D Team Citrix – Cambridge UK
- 2. XCP POSIX/GNU XenAPI ➢ Virtualization appliance userspace ssh tools ➢ Free and open-source version of xe-cli VM/XAPI XenServer toolstack yum ➢ Self-contained, easy and quick to install Linux kernel ➢ Useful to power-users Linux drivers ➢ Scalable to enterprise and cloud Xen hypervisor deployments HW
- 3. XCP & Xen Dom0 is OS agnostic: DomUs 32/64-bit PV/HVM Linux, Solaris, BSD etc with HW drivers ctrl vcpu vbd ... h-calls vmem vif 32/64-bit Xen hypervisor mechanisms HW
- 4. XCP & Xen XenAPI Dom0 is OS agnostic: DomUs DomUs XAPI PV/HVM 32/64-bit PV/HVM SRs Policy Linux, VM App Solaris, Dom 0 eg. WLB, BSD etc with Linux Transfer HW drivers 32-bit VM ctrl vcpu vbd ctrl vcpu vbd ... ... h-calls vmem vif h-calls vmem vif 32/64-bit Xen hypervisor 64-bit Xen hypervisor mechanisms mechanisms HW HW
- 5. XCP & Xen XenAPI Dom0 is OS agnostic: DomUs DomUs XAPI PV/HVM 32/64-bit PV/HVM SRs Policy Linux, VM App Solaris, Dom 0 eg. WLB, BSD etc with Linux Transfer HW drivers 32-bit VM ctrl vcpu vbd ctrl vcpu vbd ... ... h-calls vmem vif h-calls vmem vif 32/64-bit Xen hypervisor 64-bit Xen hypervisor mechanisms mechanisms pool HW HW
- 6. XenAPI
- 7. Installing XCP Manually and automatically via CentOS-like unattended answerfile
- 8. XCP 1.1 ➢ XCP 1.1 derived from XenServer 5.6sp2: ➢ Xen 3.4.2 as the hypervisor ➢ Linux 2.6.32-xen in Dom0 based on SLES 11sp1 ➢ Dom0 userspace uses CentOS 5.5 ➢ Support for openstack cloud orchestration ➢ Support for XenCenter
- 9. Xen & KVM Xen KVM No requirement for hardware-assisted Needs VT-x, AMD-V virtualization (VT-x, AMD-V) ● Allows eg. low-power x86 Atom-based datacenters such as SeaMicro SM10000 and old x86 hosts without these instructions Small amount of code to trust in Ring0 Large TCB: Kernel + modules + userspace PV drivers VirtIO Guest page sharing / swapping VM high-availability (with Remus) Driver domains and stub-domains Monolithic Linux Kernel
- 10. Xen Driver/Stub Domains ● Driver Domains: Allow eg. using specific Linux versions supporting specific hw drivers; a driver crash will affect at most this domain, which can then be restarted without affecting other (driver) domains (similar to microkernels) ● Stub Domains: Allow running specific apps in independent domains.
- 11. Future Plans for XCP ● pvops dom0 use current integration of Xen in Linux 3.0+ ● 64-bit dom0 remove limits of the 32-bit domain controller ● domain disaggregation use driver domains, stub domains for XAPI and device model binaries ● XenAPI on Debian/Ubuntu ● Project Kronos ● currently only CentOS
- 12. Contributing ● XCP: ● XAPI/XenAPI/Toolstack github.com/xen-org (ocaml etc) ● Admin Graphical Interfaces sourceforge.net/projects/openxenmanager/ (python) ● IRC / Help FreeNode #xen-api ● Downloading/Testing xen.org/products/cloudxen.html ● Xen xen.org (c lang) lists.xensource.com wiki.xen.org/xenwiki/GSoC_2011_ideas
- 13. Useful Links ● For everything: Xen.org ● A personal selection of useful links: ● Obtaining XCP http://xen.org/download/xcp/ ● XenAPI http://docs.vmd.citrix.com/XenServer/6.0.0/1.0/en_gb/api/ ● Network Throughput Guide http://wiki.xen.org/xenwiki/Network_Throughput_Guide ● XCP, RBAC and PAM authentication in the XenAPI http://blog.xen.org/index.php/2011/11/09/xcp-rbac-and-pam-authentication-in-the-xenapi/ ● Simulating the presence of PV drivers http://wiki.xen.org/xenwiki/XAPI_fake_presence_of_pv_drivers
- 14. Questions?
- 15. OpenXenManager PPA ● OpenXenManager is in Debian Sid unstable http://packages.debian.org/sid/openxenmanager and it will be in Ubuntu 12.04 repository ● You can also install it by adding this PPA: sudo add-apt-repository ppa:mike- mcclurg/openxenmanager sudo aptitude update sudo aptitude install openxenmanager
- 16. Project Kronos PPA ● Project Kronos has a Ubuntu PPA at add-apt-repository ppa:ubuntu-xen-org/xcp and probably in Ubuntu 12.04 repository ● Instructions to install XAPI on Debian and Ubuntu can be found at http://wiki.xen.org/xenwiki/XAPI_on_Ubuntu