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This guide is geared more towards CS 4.0 (build 140) and vSphere5, however, the same concept should apply to other hypervisors types like KVM and XEN. This is NOT a beginners guide, please use your judgement and substitute values as necessary.

What This Guide Covers

  • CloudStack Advanced Network Concepts
  • Physical Networks and Mapping
  • VLAN Tagging
  • Usage of Virtual Switches
  • Network Offerings
  • API Usage and CloudMokey CLI
  • Troubleshooting 

Assumptions

  • Used CloudStack previously and have basic network setup functional
  • Able to provision VMs in basic network setup and your setup is fully operational
  • Have understanding of basic terminology - go to this page for CS4 Documentation
  • Root access to your hypervisors/virtual center and know your network topology
  • Minimal experience with using APIs and/or CloudMonkey CLI
  • Able to tell what config options must change to suit your environment

Getting Started

If you attempted to create Advanced Networking - but for some reason it did not work and you would like to start over

  • If you've tried previously to configure CS within your environment and it has not worked, before you begin, make sure you environment is clean from all previous attempts. I will use VSphere 5 as an example, translate it to a hypervisor of your choice.
  • Remove all network modifications on your Hypervisors/Cluster created by CS
  • Remove all storage modifications on your Hypervisors/Cluster created by CS
  • Remove all the content from NFS primary and secondary datastore (i'm making assumption that data is not needed) or present a new primary and secondary NFS datastore
  • Remove all the references from CS about the zone/pod/cluster/storage/networks/hosts you attempted to add but failed
    If there are remnants of previous setup - there is a chance your Zone Deployment may fail - therefore, please confirm that your environment is pristine state as it was pre-CloudStack 

Pretext

The example environment in this tutorial consists of:

Physical gear and OS:

  • 3 x HP BL465 G8 Servers as hypervisors
  • Each hypervisor has 6 NICs
  • VmWare vSphere 5.0 u1 and Virtual Center 5.0

Network Layout:

--------------------------------------------------------------

- vSwitch0 - Virtual Switch for Management

-- Management Network - Portgroup for Management vnic vmk0

--- NO VLAN TAGGING

2 NICs assigned for this vSwitch

--------------------------------------------------------------

- vSwitch2 - Virtual Switch for Guest VMs TRUNK Network

-- 

Step 1: Import system template

SSH to your CS4 environment

Mount the secondary NFS storage to /mnt/secondary on CS4

Run

/usr/lib64/cloud/common/scripts/storage/secondary/cloud-install-sys-tmplt -m /mnt/secondary/ -u http://download.cloud.com/templates/burbank/burbank-systemvm-08012012.ova -h vmware

Step 2: Create a network layout sheet for your reference

It is recommended to create layout of how you believe CloudStack IP allocation will take place, hence a quick write up of what networks get what assignments is very helpful.

In this example, we have a 3 node VmWare vSphere 5 cluster

To be continued

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