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Posts Tagged ‘Cloud’

In the part 2, I would like to discuss about some of the most common scenarios for configuring vApps with vApp, Organization Virtual Datacenter and External networks, which can be further customized to develop various use cases:

vApps directly attached to an isolated vApp network

In this scenario, consumers need isolated vApp networks to create completely isolated environments for their users.

Examples: Isolated software development environments, isolated student labs

Figure: vApps > Isolated vApp Network

 

 

 

 

vApps directly attached to an isolated Organization Virtual Datacenter Network

In this scenario, consumers connect vApps directly to an isolated organization Virtual Datacenter network, so all the vApps can communicate with each other. And if the organization Virtual Datacenter network is shared across all the organization Virtual Datacenters in the organization, then the vApps across the entire organization can communicate to each other.

Examples: Multiple departments within a corporate environment, Dev/QA/UAT sharing resources between each other.

Figure: vApps > Isolated Organization Virtual Datacenter Network

 

 

 

 

 

vApps directly attached to an External Network

In this scenario, consumers connect vApps directly to the external networks, so all the vApps can communicate to the services on the external networks.

Examples: Consumer vApps connecting to <Customer>’s backup network for backup/restore purposes.

Figure: vApps > External Network

 

vApps directly attached to a vApp Network that is routed to an isolated Organization Virtual Datacenter Network

In this scenario, consumers connect vApps to an isolated organization Virtual Datacenter network via a vCloud Networking and Security edge, so all the vApps cannot communicate with each other without having to go through a vCloud Networking and Security edge for various services such as firewall, NAT, static routing, load balancing and so forth. And if the organization Virtual Datacenter network is shared across all the organization Virtual Datacenters in the organization, then the vApps across the entire organization can communicate to each other via a vCloud Networking and Security edge.

Examples: Multiple corporates, Software development teams protecting vApps from each other or providing gateway services such as load balancing to vApps.

Figure: vApps > vApp Network > (vCloud Networking and Security Edge) > Isolated Organization Virtual Datacenter Network

 

 

 

 

 

 

vApps route connected to the External Networks

In this scenario, consumers connect vApps to the external networks via routed connection, so all the vApps are protected to communicate to the services on the external networks.

Examples: Consumer vApps are connecting to <Customer>’s backup network for backup/restore purposes, but protected with gateway services.

Figure: vApps > vApp Network > (vCloud Networking and Security Edge) > External Network

 

 

 

 

 

 

vApps directly attached to an Organization Virtual Datacenter Network that is connected to an Edge Gateway with multiple interfaces

In this scenario, consumers connect vApps to an organization Virtual Datacenter network that is directly connected to an Edge gateway for all the gateway services and connectivity to external networks. so all the vApps can communicate with each other while getting access to all the services such as firewall, NAT, static routing, load balancing and so forth while connecting to the external networks. And if the organization Virtual Datacenter network is shared across all the organization Virtual Datacenters in the organization, then the vApps across the entire organization can benefit from the same services.

Examples: Multiple departments within a corporate environment, Dev/QA/UAT sharing resources between each other with access to Internet, VPN, MPLS or other external connectivity.

Figure: vApps > Organization Virtual Datacenter Network > Edge Gateway > External Network

 

 

 

 

 

 

 

vApps route connected to an Organization Virtual Datacenter Network that is connected to an Edge Gateway with multiple interfaces

In this scenario, consumers connect vApps to the organization Virtual Datacenter network via a vCloud Networking and Security Edge, so all the vApps cannot communicate with each other without having to go through a vCloud Networking and Security Edge for various services such as firewall, NAT, static routing, load balancing and so forth. The organization Virtual Datacenter network is further connected to an edge device to provide all the gateway services and connectivity to the external networks.

And if the organization Virtual Datacenter network is shared across all the organization Virtual Datacenters in the organization, then the vApps across the entire organization can communicate to each other via a vCloud Networking and Security Edge.

Examples: Multiple teams protecting vApps from each other or providing gateway services such as load balancing to vApps, while providing access to Internet, VPN, MPLS or other external connectivity.

Figure: vApps > vApp Network > (vCloud Networking and Security Edge) > Organization Virtual Datacenter Network > Edge Gateway > External Network

 

 

 

 

 

 

 

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In the part 1, I would like to discuss about the Edge gateways and the Organization Virtual Datacenter Networks:

Edge Gateways

Edge gateways are first class entities that are associated with Organization Virtual Datacenter, but unlike Organization Virtual Datacenter networks, edge gateways cannot be shared across other Organization Virtual Datacenters within the Organization. They can be connected to multiple external networks, as they come with multiple interfaces (up to 10).

Edge gateways are deployed with the following capabilities:

  • Created by the cloud system administrators to provide all the following vCloud Networking and Security edge services to the consumers and to provide connectivity to the external networks.
  • They provide external network connectivity to the consumers along
Organization Virtual Datacenter Networks

With vCD 5.1, Organization Networks have been replaced the Organization Virtual Datacenter networks. Organization Virtual Datacenter networks provide organization Virtual Datacenters with a network where vApps can be connected. These networks created in an Organization Virtual Datacenter can be shared across the other Organization Virtual Datacenters within the same Organization, so the vApps in multiple Org Virtual Datacenters can be configured to communicate with each other by selecting the same Organization Virtual Datacenter network.

Organization Virtual Datacenter networks can be created in one of the following ways:

  • Internal organization Virtual Datacenter network – Isolated.
  • Routed to an existing edge gateway – Routed connection.
  • Directly connected to an external network – Direction connection.
Isolated Organization Virtual Datacenter Network

An internal organization Virtual Datacenter network is isolated from all other networks, but can be shared across all the other Organization Virtual Datacenters within the Organization, so the vApps across the organization can select a common network to communicate to each other.

Isolated Organization Virtual Datacenter networks can be instantiated through network pools both by the cloud system administrators and the organization administrators.

 

 

 

 

Organization Virtual Datacenter Network routed to an existing edge gateway

A routed external organization Virtual Datacenter network is protected by a vCloud Networking and Security Edge device at the Organization Virtual Datacenter level, which provides DHCP, Firewall, NAT, VPN, and static routing services. vCloud Networking and Security Edge connects to the organization Virtual Datacenter network and multiple external networks.

Isolated Org Virtual Datacenter networks can be instantiated through network pools both by the cloud system administrators and the organization administrators.

 

 

 

 

 

 

Organization Virtual Datacenter Network directly connected to an external network

A directly connected external organization Virtual Datacenter network places the vApp virtual machines in the port group of the external network. IP address assignments for vApps follow the external network IP addressing. This is generally used by the <Customer>’s system administrators to provide the service-oriented such as “Backup Network” for backup/restore purposes to the consumers and that do not need any edge-based services.

Isolated Org Virtual Datacenter networks can be instantiated through network pools only by the cloud system administrators.

 

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Before we know about VMware vCloud Director, let us quickly see what Cloud Computing is. So, what is cloud computing? That’s the new buzz word in the market, right? Well, does it really mean anything to us? Some say that it is a new way of saying what we have been offering as a Virtualization service, is that right? When somebody asks me the same question I just reply with a face and say “You talkin’ to me?”, no I am just kidding. Here is how “I” see at it:

Let us break the cloud computing into two different words, define them, combine them and then see what they mean together: We have always used “cloud” as somekind of network such as Internet or WAN or VPN that is out there. And we all know that computing is some kind of hardware and/or software that can be used to access, process or manage information. Now, if we combine them together we are really talking about accessing, processing and managing information over some kind of private or public network. There are several other names in the market that revolve around cloud computing. For instance, when cloud computing is used for delivering Application services, it can be called as “Software as a Service (SaaS)”, when is it used for delivering Platform services, it can be called as “Platform as a Service (PaaS)” and when used for delivering Infrastructure services, it can be called as “Infrastructure as a Service (IaaS)”.

VMware vCloud Director is an “Infrastructure as a Service” solution that can pool the VMware vSphere resources in your existing datacenter and deliver them on a catalog basis without the end-users knowing the complexities of the Infrastructure behind it. It is elastic in nature and provides consumption based pricing and can be accessed over the Internet using standard protocols. Now, think of it as a layer sitting above the VMware vSphere layer to transparently provide resources to the end-users just as shown below:

As you can see from the bottom up, historically VMware vSphere Components abstracted the Physical resources into virtual resources and now VMware vCloud Director Components will abstract the VMware vSphere virtual resources into “Pure Virtual” resources. When I say pure virtual resources, I am referring to the Virtual Computing, networking and storage resources to be more specific. With that said, let us see what are the various VMware vCloud Director Components that are making this happen:

  1. VMware vCloud Director Cells: These are multiple VMware vCloud Director software components installed on RedHat Enterprise Linux and are stateless peers that use a single VMware vCloud Director database but can scale horizontally. Multiple cells provide redundandy and load balancing when used with an external load balancer. Every cell has several roles such as UI, vCloud API, Console Proxy, VMware Remote Console (VMRC), Image Transfer and so on, however Console Proxy and VMRC are the configurable and critical components where Console proxy provides self-service VMware vCloud Director portal access to the administrators and end-users and the VMRC provides Virtual Machine Remote Console access to both administrators and end-users.
  2. VMware vCloud Director Database: This is an Oracle database that stores all the VMware vCloud Director information. Care should be taken to design the database with redundancy and high availability. Currently, Oracle 10g Enterprise Server and above is the only database type that is supported.
  3. VMware vShield Manager and Edge Components: VMware vShield Manager is used to manage all the vShield service VMs such as vShield Edges that will be created on the fly whenever fencing, NATing and other services are used within the VMware vCloud Director environment.
  4. VMware vCenter Chargeback: vCenter Chargeback provides the software metering to the VMware vCloud Director environment that can be used to bill the end-users. It runs on an Apache Tomcat server instance and provide built-in load balancing when used with multiple vCenter Chargeback Servers. Chargeback also contain Data collectors including one for vCloud Director and one for vShield components that are responsible for collecting the information specific to the multi-tenant VMware vCloud Director environment.
  5. And of course VMware vSphere Components: VMware vCloud Director is sitting on top of VMware vSphere layer and works with vCenter Server and ESX/ESXi Hosts to provide private and public computing resources.

 

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