# etcd集群部署
```shell
1.下载etcd(https://github.com/coreos/etcd/releases/) 至 /root/
# cd
# tar -xvf etcd-v3.3.9-linux-amd64.tar.gz
# cp etcd-v3.3.9-linux-amd64/etcd /opt/kubernetes/bin/
# cp etcd-v3.3.9-linux-amd64/etcdctl /opt/kubernetes/bin/
2.创建 etcd 的 systemd unit 文件
# vim /usr/lib/systemd/system/etcd.service
[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target
[Service]
Type=notify
EnvironmentFile=-/opt/kubernetes/cfg/etcd
ExecStart=/opt/kubernetes/bin/etcd \
--name=${ETCD_NAME} \
--data-dir=${ETCD_DATA_DIR} \
--listen-peer-urls=${ETCD_LISTEN_PEER_URLS} \
--listen-client-urls=${ETCD_LISTEN_CLIENT_URLS},http://127.0.0.1:2379 \
--advertise-client-urls=${ETCD_ADVERTISE_CLIENT_URLS} \
--initial-advertise-peer-urls=${ETCD_INITIAL_ADVERTISE_PEER_URLS} \
--initial-cluster=${ETCD_INITIAL_CLUSTER} \
--initial-cluster-token=${ETCD_INITIAL_CLUSTER} \
--initial-cluster-state=new \
--cert-file=/opt/kubernetes/ssl/kubernetes.pem \
--key-file=/opt/kubernetes/ssl/kubernetes-key.pem \
--peer-cert-file=/opt/kubernetes/ssl/kubernetes.pem \
--peer-key-file=/opt/kubernetes/ssl/kubernetes-key.pem \
--trusted-ca-file=/opt/kubernetes/ssl/ca.pem \
--peer-trusted-ca-file=/opt/kubernetes/ssl/ca.pem
Restart=on-failure
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
3.环境变量配置文件/opt/kubernetes/cfg/etcd /*注意集群IP*/
# vim /opt/kubernetes/cfg/etcd
#[Member]
ETCD_NAME="etcd1"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://192.168.11.212:2380"
ETCD_LISTEN_CLIENT_URLS="https://192.168.11.212:2379"
#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.11.212:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://192.168.11.212:2379"
ETCD_INITIAL_CLUSTER="etcd1=https://192.168.11.212:2380,etcd2=https://192.168.11.213:2380,etcd3=https://192.168.11.214:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
4.启动ETCD集群
# systemctl daemon-reload
# systemctl start etcd
# systemctl enable etcd
5.验证集群
etcdctl memeber list
etcdctl cluster-health
```
