diff --git a/README.md b/README.md
index 1ff1128..8a827d4 100644
--- a/README.md
+++ b/README.md
@@ -82,6 +82,7 @@ vim req-csr.json:
   "hosts": [
     "3.14.3.102",
     "3.14.3.107",
+    "3.14.3.103",
     "127.0.0.1"
   ],
   "key": {
@@ -196,12 +197,25 @@ etcd --name purple --initial-advertise-peer-urls https://3.14.3.107:2380 \
   --listen-client-urls https://3.14.3.107:2379,https://127.0.0.1:2379 \
   --advertise-client-urls https://3.14.3.107:2379 \
   --initial-cluster-token pi-cluster-1 \
-  --initial-cluster red=https://3.14.3.102:2380,purple=https://3.14.3.107:2380 \
+  --initial-cluster red=https://3.14.3.102:2380,purple=https://3.14.3.107:2380,grey=https://3.14.3.103:2380 \
   --initial-cluster-state new \
   --client-cert-auth --trusted-ca-file=/certs/ca.pem \
   --cert-file=/certs/client.pem --key-file=/certs/client-key.pem \
   --peer-client-cert-auth --peer-trusted-ca-file=/certs/ca.pem \
   --peer-cert-file=/certs/purple.pem --peer-key-file=/certs/purple-key.pem
+
+export ETCD_UNSUPPORTED_ARCH=arm64
+etcd --name grey --initial-advertise-peer-urls https://3.14.3.103:2380 \
+  --listen-peer-urls https://3.14.3.103:2380 \
+  --listen-client-urls https://3.14.3.103:2379,https://127.0.0.1:2379 \
+  --advertise-client-urls https://3.14.3.103:2379 \
+  --initial-cluster-token pi-cluster-1 \
+  --initial-cluster red=https://3.14.3.102:2380,purple=https://3.14.3.107:2380,grey=https://3.14.3.103:2380 \
+  --initial-cluster-state new \
+  --client-cert-auth --trusted-ca-file=/certs/ca.pem \
+  --cert-file=/certs/client.pem --key-file=/certs/client-key.pem \
+  --peer-client-cert-auth --peer-trusted-ca-file=/certs/ca.pem \
+  --peer-cert-file=/certs/grey.pem --peer-key-file=/certs/grey-key.pem
 ```
 
 ## Systemd
@@ -218,10 +232,10 @@ Type=notify
 Environment=ETCD_UNSUPPORTED_ARCH=arm64
 Environment=ETCD_DATA_DIR=/var/lib/etcd
 Environment=ETCD_NAME=red
-Environment=ETCD_INITIAL_ADVERTISE_PEER_URLS=https://3.14.3.102:2380
-Environment=ETCD_LISTEN_PEER_URLS=https://3.14.3.102:2380
-Environment=ETCD_LISTEN_CLIENT_URLS=https://3.14.3.102:2379,https://127.0.0.1:2379
-Environment=ETCD_ADVERTISE_CLIENT_URLS=https://3.14.3.102:2379
+Environment=ETCD_INITIAL_ADVERTISE_PEER_URLS=https://$IP:2380
+Environment=ETCD_LISTEN_PEER_URLS=https://$IP:2380
+Environment=ETCD_LISTEN_CLIENT_URLS=https://$IP,https://127.0.0.1:2379
+Environment=ETCD_ADVERTISE_CLIENT_URLS=https://$IP:2379
 Environment=ETCD_INITIAL_CLUSTER_TOKEN=pi-cluster-1
 Environment=ETCD_INITIAL_CLUSTER="red=https://3.14.3.102:2380,purple=https://3.14.3.107:2380,grey=https://3.14.3.103:2380"
 Environment=ETCD_INITIAL_CLUSTER_STATE=new
@@ -254,7 +268,7 @@ export ETCDCTL_DIAL_TIMEOUT=3s;
 export ETCDCTL_CACERT=./certs/ca.pem; # ca.pem
 export ETCDCTL_CERT=./certs/client.pem; # 3.14.3.102.pem
 export ETCDCTL_KEY=./certs/client-key.pem;  # 3.14.3.102-key.pem
-export ETCDCTL_ENDPOINTS=https://3.14.3.102:2379,https://3.14.3.107:2379,https://3.14.3.103;
+export ETCDCTL_ENDPOINTS=https://3.14.3.102:2379,https://3.14.3.107:2379,https://3.14.3.103:2379;
 etcdctl put foo bar
 etcdctl get foo
 while true; do etcdctl get foo && sleep 1; done;