Deploying CoreOS via PowerShell

This script will automatically build out CoreOS clusters of a given size on enterprise VMware infrastructure.

Taken from this blog post and expanded to include parameterized input, variable cluster size, and auto-generated/updated etcd discovery url.

Parameters

• NodeCount: Defaults to 3, this is used to determine how many nodes are in the cluster (also used for generating IP addresses)
• vCenterServer: The target vCenter Server (Defaults to my internal/isolated homelab... change this for your implementation)
• ClusterDns: DNS server for use by the nodes
• ClusterGateway: The node's IPv4 gateway
• IPAddressStart: The first node's IP address. This will be incremented for each subsequent node. Note: The current version does not check for valid IP addresses at run time. If you start at 10.3.1.250 and make a cluster of 11 nodes, this will probably break things.
• Cidr: Defaults to 24, this indicates the subnet mask in cidr notation
• VMwareCred: Credentials for connecting to $vCenterServer
• CoreOSTemplate: The name of the CoreOS template in vCenter