K8s 1.6.2 安装配置-etcd集群(二）

将原来生成的ca.pem、kubernetes-key.pem、kubernetes.pem证书拷贝到/etc/kubernetes/ssl目录中

安装etcd

yum install etcd

配置etcd.service

[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target
Documentation=https://github.com/coreos

[Service]
Type=notify
WorkingDirectory=/var/lib/etcd/
EnvironmentFile=/etc/etcd/etcd.conf
ExecStart=/usr/bin/etcd \
  --name ${ETCD_NAME} \
  --cert-file=/etc/kubernetes/ssl/kubernetes.pem \
  --key-file=/etc/kubernetes/ssl/kubernetes-key.pem \
  --peer-cert-file=/etc/kubernetes/ssl/kubernetes.pem \
  --peer-key-file=/etc/kubernetes/ssl/kubernetes-key.pem \
  --trusted-ca-file=/etc/kubernetes/ssl/ca.pem \
  --peer-trusted-ca-file=/etc/kubernetes/ssl/ca.pem \
  --initial-advertise-peer-urls ${ETCD_INITIAL_ADVERTISE_PEER_URLS} \
  --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-cluster-token ${ETCD_INITIAL_CLUSTER_TOKEN} \
  --initial-cluster infra1=https://192.168.100.17:2380,infra2=https://192.168.100.19:2380,infra3=https://192.168.100.20:2380 \
  --initial-cluster-state new \
  --data-dir=${ETCD_DATA_DIR}
Restart=on-failure
RestartSec=5
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

配置各节点/etc/etcd/etcd.conf

# [member]
ETCD_NAME=infra2
ETCD_DATA_DIR="/var/lib/etcd"
ETCD_LISTEN_PEER_URLS="https://192.168.100.19:2380"
ETCD_LISTEN_CLIENT_URLS="https://192.168.100.19:2379"

#[cluster]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.100.19:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_ADVERTISE_CLIENT_URLS="https://192.168.100.19:2379"

启动 etcd 服务

mv etcd.service /etc/systemd/system/
systemctl daemon-reload
systemctl enable etcd
systemctl start etcd
systemctl status etcd

验证服务

etcdctl \
  --ca-file=/etc/kubernetes/ssl/ca.pem \
  --cert-file=/etc/kubernetes/ssl/kubernetes.pem \
  --key-file=/etc/kubernetes/ssl/kubernetes-key.pem \
  cluster-health

wget https://dl.k8s.io/v1.6.2/kubernetes-server-linux-amd64.tar.gz