Infrastructure OverviewΒΆ

The following chapters outline the infrastructural aspects of the Reference Architecture for Kolab Groupware.

  • Management Infrastructure
    • System Provisioning
      • If you can’t do it all over again from scratch, how are you certain of anything?
    • Internal Mirror
      • Just to speed things up.
    • Vendor Entitlement Satellite or Proxy Services
      • Same reason as for the Internal Mirror, but with some Red Hat Enterprise Linux sauce. Includes pre-approval of updates pending on your system, local mirror, entitlement relay, reporting, and other such niceties.
  • DNS
    • Hidden Master(s) Topology
    • DNSSEC
    • DANE
    • Use of AnyCast DNS
    • Hosted Specific:
      • Domain Name Space Validation
      • Domain Name Space Registration
    • Split Horizon DNS
      • For geographical origins
      • For perimeter networks
      • For internal networks
  • IP Space Allocation
    • Public IP Space
    • SNI support constraints
    • Private IP Space
    • IPv4: PAT vs. NAT
    • IPv6: ??
    • Predictability of Node IP address(es)
  • Clustered Services
  • Tenancy
  • Virtualization
    • Technologies, Platforms
      • QEMU-KVM, virt-manager: yes
      • OpenStack: yes, via partner
      • RHEV: yes, via partner
      • OpenShift: yes, via partner
      • VMWare ESX / vSphere: no, partner only, at best
      • Microsoft Azure / Hyper-V: no, partner only, at best
    • Software-Defined Networking
      • Can also require physical layers
      • Avoiding the use of GRE tunnels