This demonstrates using Cloudflare's cfssl to easily generate certificates for an etcd cluster.
Defaults generate an ECDSA-384 root and leaf certificates for localhost
. etcd nodes will use the same certificates for both sides of mutual authentication, but won't require client certs for non-peer clients.
Instructions
- Install git, go, and make
- Amend https://github.com/coreos/etcd/blob/master/hack/tls-setup/config/req-csr.json - IP's currently in the config should be replaced/added to with IP addresses of each node in your cluster, please note 127.0.0.1 is always required for loopback purposes:
Example:
{
"CN": "etcd",
"hosts": [
"3.8.121.201",
"46.4.19.20",
"127.0.0.1"
],
"key": {
"algo": "ecdsa",
"size": 384
},
"names": [
{
"O": "autogenerated",
"OU": "etcd cluster",
"L": "the internet"
}
]
}
- Run
make
to generate the certs