It supports painless upgrade, service discovery, overlay networks, Ceph, ... In a word, it's awesome!
And deploying it on Runabove is a breeze.
1. Create a custom VM template
Go the OpenStack Horizon, then go to Images panel and then on the create image button to install the new image.
CoreOS distributes official OpenStack compressed images that we'll need to prepare. For example:
wget http://alpha.release.core-os.net/amd64-usr/current/coreos_production_openstack_image.img.bz2 bunzip2 coreos_production_openstack_image.img.bz2
You can then upload resulting
coreos_production_openstack_image.img file (around 400MB). Alternatively You'll find an already inflated images of CoreOS 431 here.
2. Launch an instance from this image
Click the Launch button right next to your new image.
Pick a cool name for your instance. Say
agent_007. Make sure to select a network like
Ext-Net. Then move on to the post-creation tab.
3. Configure your instance
If you don't have one already, generate a unique token to identify your new CoreOS cluster. This token will allow cluster members to automatically discover their peers.
curl https://discovery.etcd.io/new; echo
Paste and customize the following cloud-config script. Cloud-config is the standard for VM customization and especially well integrated by CoreOS team.
#cloud-config coreos: etcd: # <token> as generated above discovery: https://discovery.etcd.io/<token> addr: $private_ipv4:4001 peer-addr: $private_ipv4:7001 units: - name: etcd.service command: start - name: fleet.service command: start
Launch... And voilà !
Don't forget to login with the user
core instead of
You can find more information: https://coreos.com/docs/running-coreos/platforms/openstack/