Docker Cookbook

"expiration"
:
"2015-01-19T17:50:15.797821504Z"
,
"key"
:
"/_etcd/registry/61297b379e5024f33b57bd7.../e4c0..."
,
"modifiedIndex"
:
279744808
,
"ttl"
:
599113
,
"value"
:
"http://172.17.8.101:7001"
},
{
"createdIndex"
:
279745601
,
"expiration"_:_"2015-01-19T17:59:49.196184481Z"_,_"key"_:_"/_etcd/registry/61297b379e5024f33b57bd7.../01ef..."_,_"modifiedIndex"'>"expiration"
:
"2015-01-19T17:59:49.196184481Z"
,
"key"
:
"/_etcd/registry/61297b379e5024f33b57bd7.../01ef..."
,
"modifiedIndex"
:
279745601
,
"ttl"
:
599687
,
"value"
:
"http://172.17.8.102:7001"
},
{
"createdIndex"
:
279746380
,
"expiration"
:
"2015-01-19T17:51:41.963086657Z"
,
"key"
:
"/_etcd/registry/61297b379e5024f33b57bd7.../cd3d..."
,
"modifiedIndex"
:
279746380
,
"ttl"
:
599199
,
"value"
:
"http://172.17.8.103:7001"
},
{
"createdIndex"
:
279747319
,
"expiration"
:
"2015-01-19T17:52:33.315082679Z"
,
"key"
:
"/_etcd/registry/61297b379e5024f33b57bd7.../3602..."
,
"modifiedIndex"
:
279747319
,
6.3 Starting a CoreOS Cluster via Vagrant to Run Containers on Multiple Hosts | 177

---

"ttl"
:
599251
,
"value"
:
"http://172.17.8.104:7001"
}
]
}
}
Your nodes have now formed an 
etcd
cluster that can be used as a fully working
highly available key-value store. Using the 
etcdctl
command, you can set and get
keys:
core@core-01 ~ $ etcdctl set foobar "Docker"
Docker
core@core-01 ~ $ etcdctl get foobar
Docker
core@core-01 ~ $ etcdctl ls
/foobar
/coreos.com
To launch containers on the cluster, you can define 
systemd
units as you did in
Recipe 6.2
 and start them with the 
fleetctl
 CLI (see 
Recipe 6.4
).
See Also
• CoreOS clustering with 
Vagrant
• Introduction to 
etcd
• Getting started with 
fleet