Examples contains bootcfg data directories showcasing different PXE-bootable baremetal clusters. These examples work with libvirt VMs setup with known hardware attributes by scripts/libvirt.

Clusters

Name	Description	Type	Docs
etcd-small	Cluster with 1 etcd node, 4 proxies	cloud config	cluster-architecture
etcd-large	Cluster with 3 etcd nodes, 2 proxies	cloud config	cluster-architecture

Usage

First, read about the bootcfg config service. Then setup the config service and network boot environment using the libvirt guide.

Create 5 libvirt VM nodes on the docker0 bridge.

./scripts/libvirt create       # create node1 ... node5

Generally, you just need to run the coreos/bootcfg container and the coreos/dnsmasq container (which runs network boot services).

For coreos/bootcfg, mount one of the example directories with -v $PWD/examples/some-example:/data:Z and provide the -data-path if the mount location differs from /data.

Reboot to see nodes boot with PXE and create a cluster.

./scripts/libvirt reboot

Clean up by powering off and destroying the VMs.

./scripts/libvirt shutdown        # graceful
./scripts/libvirt poweroff        # non-graceful
./scripts/libvirt destroy