UbuntuHelp:UEC/Prerequisites

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https://help.ubuntu.com/community/UEC/Prerequisites

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Before you install the packages (or shortly thereafter), there are some prerequisites that should be satisfied to end up with a fully functioning Eucalyptus system.

• On each node, configure the system's primary ethernet interface as a bridge. (See the Ubuntu Server Guide Bridging for details). The node controller will attach virtual network interfaces to this bridge for VM that is started before it to enable network connectivity. <
  > Note: Remember the name of your node's bridge device (we assume the name of your bridge device is "`br0`" for the rest of this document).
• The default Eucalyptus configuration assumes that there is not a DHCP server in your environment that is handing out dynamic IP addresses. The Cluster Controller runs a dhcp server that will statically assign IP addresses to VMs (which will be bridged on the local network).
• From any host that you wish to use as a Eucalyptus client, you should install the `euca2ools` package from universe:

$ sudo apt-get install euca2ools Also, other tools that can interact with the EC2 and S3 APIs should work with Eucalyptus.

• If you wish to access Eucalyptus from behind a firewall (i.e. the `euca2ools` tools and the cloud controller will be on different sides of a firewall) then port `8773` must be open on the cloud controller. Additionally, if you plan to register your Eucalyptus installation with a cloud management platform, `8773` and `8443` must be open.