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Quintagroup Hosting
Quintagroup Hosting
Quintagroup Hosting
Quintagroup Hosting
Quintagroup Hosting
Quintagroup Hosting
Quintagroup Hosting
Quintagroup Hosting
Quintagroup Hosting
Quintagroup Hosting
Quintagroup Hosting
Quintagroup Hosting
Quintagroup Hosting
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Quintagroup Hosting

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Hosting from Quintagroup: Virtualization, High Availability, Geographical load-balancing, Computing in the Cloud

Hosting from Quintagroup: Virtualization, High Availability, Geographical load-balancing, Computing in the Cloud

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    • 1. Hosting <ul><ul><li>Virtualization </li></ul></ul><ul><ul><li>High Availability </li></ul></ul><ul><ul><li>Geographical load-balancing </li></ul></ul><ul><ul><li>Computing in the Cloud </li></ul></ul><ul><ul><li>Myroslav Opyr, CTO </li></ul></ul><ul><ul><li>© Quintagroup, 2008 </li></ul></ul>
    • 2. Quintagroup Hosting <ul><li>Types: </li></ul><ul><li>Shared Zope Instances </li></ul><ul><li>Standalone Zope Instances </li></ul><ul><li>Dedicated Servers and their clusters </li></ul><ul><li>Virtual servers </li></ul><ul><li>VM Clusters </li></ul><ul><li>Highly Available VM Clusters </li></ul><ul><li>Scalable HA VM Clusters </li></ul>
    • 3. <ul><ul><li>Virtual Servers </li></ul></ul><ul><li>XEN paravirtualization (usually Linux on Linux) </li></ul><ul><ul><li>virtualization-aware kernel on VM that communicates all hardware-related issues with hypervisor </li></ul></ul><ul><li>XEN full virtualization (Windows on Linux) </li></ul><ul><ul><li>hardware is emulated, native kernel is running on Ring1 thanks to VM extesnsions of CPU </li></ul></ul>
    • 4. Typical Virtual Environment (VE) <ul><li>Plenty of RAM </li></ul><ul><li>256Mb Virtual machines </li></ul><ul><li>Tiny Dom0 (64Mb) </li></ul><ul><ul><li>XM </li></ul></ul><ul><ul><li>IPtables </li></ul></ul><ul><ul><li>Tinc VPN </li></ul></ul><ul><ul><li>Munin </li></ul></ul>
    • 5. <ul><ul><li>Resource management </li></ul></ul><ul><li>In the case we are running out of resources in VE, VM is migrated to new one that satisfies requirements (has enough RAM, HDD, CPU). Migration is either off-line or live. </li></ul>
    • 6. <ul><ul><li>Typical VM cluster </li></ul></ul><ul><li>frontend (Apache, Squid, AWstats) </li></ul><ul><li>backend (pound, ZEO clients) </li></ul><ul><li>manage (ZEO client) </li></ul><ul><li>storage (ZEO server) </li></ul>
    • 7. Highly Available VM cluster <ul><li>Two almost identical VM Clusters </li></ul><ul><li>Single storage VM </li></ul><ul><li>RAID1, mirror over Network (drbd) disk of storage VM </li></ul><ul><li>High Availability software (heartbeat) </li></ul>
    • 8. <ul><ul><li>Visibility of HA VM Cluster </li></ul></ul><ul><li>Hardware Load Balancer (NetScaler, etc.) </li></ul><ul><li>Caching CDN (RapidEdge, Peer1 – Squid Cache servers) </li></ul><ul><li>Geographically and availability aware DNS (GLOBAL, Peer1) </li></ul><ul><li>Round Robin DNS (and manual/automatic zone edits) </li></ul>
    • 9. Geographical Load-Balancing <ul><li>True GeoLB via Multi-homing IP </li></ul><ul><ul><li>Dedicated AS with Multi-homing IP </li></ul></ul><ul><ul><li>Carefully crafted BGP with limited propagation </li></ul></ul><ul><li>GeoLB on DNS level (DNS via true GeoLB) </li></ul><ul><ul><li>application requesting www.example.com reaches closest DNS server </li></ul></ul><ul><ul><li>DNS server offer closest live example.com server IP </li></ul></ul>
    • 10. <ul><ul><li>Cloud Computing </li></ul></ul><ul><li>We are doing computing on-demand, when there is need (load average on servers is more then servers can handle and site responsiveness is below preconfigured value). </li></ul><ul><li>Amazon EC2 (Elastic Cloud Computing) platform, XEN VE </li></ul><ul><li>Pound </li></ul><ul><li>Tinc </li></ul><ul><li>Heartbeat OpenACS </li></ul>
    • 11. Computing in the Cloud (illustration)
    • 12. <ul><ul><li>Questions? </li></ul></ul>
    • 13. <ul><ul><li>About </li></ul></ul><ul><li>Quintagroup 7 Morozna str. 79066, Lviv Ukraine Email: info@quintagroup.com Phone: +380.32.245-7622 </li></ul><ul><li>Myroslav Opyr Chief Technological Officer Email: myroslav@quintagroup.com Skype: myroslav_opyr Mobile: +380.50.317-4578 </li></ul>

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