flannel: add static configuration and subnet lease support #131
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flannel can be configured with a static configuration and subnet lease.
flanneld -config '{"Network": "10.0.0.0/8", "SubnetLen": 20, "SubnetMin": "10.10.0.4", "SubnetMax": "10.99.0.0"}' -subnet="10.10.0.0-24"
The result of this change means flannel can start without etcd. Once etcd
is online, flannel will register its lease.
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@kelseyhightower I'm not sure I understand how the whole thing is going to work. This will make it possible for etcd to run over flannel network but how will other nodes join in? They would have the same bootstrapping problem. How would they reach etcd to get their lease and setup a routes/overlay to etcd node? |
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@kelseyhightower I understand how this works in alloc mode + GCE where something else configures the network. But I fail to understand how it can work with overlays? How will other nodes contact etcd over overlay if it's not setup for them yet? |
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This will be handled by reservations soon. |
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flannel can be configured with a static configuration and subnet lease.
The result of this change means flannel can start without etcd. Once etcd
is online, flannel will register its lease.