ubuntu@ip-172-31-48-169:~$ ls -l /tmp/etcd_*
-rw-r--r-- 1 root root 1179 Jul  1 15:09 /tmp/etcd_ca
-rw-r--r-- 1 root root 4623 Jul  1 15:09 /tmp/etcd_cert
-rw-r--r-- 1 root root 1703 Jul  1 15:09 /tmp/etcd_key
ubuntu@ip-172-31-48-169:~$

ubuntu@ip-172-31-48-169:~$ cat /etc/default/etcd
# This file is rendered by Juju, manual edits will not be persisted
ETCD_PROXY=on
ETCD_LISTEN_CLIENT_URLS="http://127.0.0.1:2379"

ETCD_INITIAL_CLUSTER="etcd0=https://172.31.51.7:2380"

# SSL CONFIGURATION
ETCD_PEER_CERT_FILE=/tmp/etcd_cert
ETCD_PEER_KEY_FILE=/tmp/etcd_key
ETCD_PEER_TRUSTED_CA_FILE=/tmp/etcd_ca
# SSL Strict Mode
ETCD_PEER_CLIENT_CERT_AUTH=true