etcd集群增加节点

主要两步：

• 添加节点
• 启动新节点

原本etcd集群

# etcdctl member list
b7124c8d88451: name=myetcd1 peerURLs=http://192.168.9.100:2380 clientURLs=http://192.168.9.100:2379 isLeader=true
235dcf74ed6248d5: name=myetcd3 peerURLs=http://192.168.9.100:2382 clientURLs=http://192.168.9.100:2399 isLeader=false
e35665335259ca10: name=myetcd2 peerURLs=http://192.168.9.100:2381 clientURLs=http://192.168.9.100:2389 isLeader=false

新增节点： 192.168.9.101：2383

# etcdctl member add myetcd4  http://192.168.9.101:2383

Added member named myetcd4 with ID 2644935c1a10c721 to cluster

ETCD_NAME="myetcd4"
ETCD_INITIAL_CLUSTER="myetcd1=http://192.168.9.100:2380,myetcd3=http://192.168.9.100:2382,myetcd4=http://192.168.9.101:2383,myetcd2=http://192.168.9.100:2381"
ETCD_INITIAL_CLUSTER_STATE="existing"

启动新节点：

# etcd --name myetcd4  --listen-client-urls http://0.0.0.0:2409 --advertise-client-urls http://192.168.9.101:2409 --listen-peer-urls http://0.0.0.0:2383 --initial-advertise-peer-urls http://192.168.9.101:2383  --initial-cluster-token etcd-cluster-test --initial-cluster-state existing --initial-cluster myetcd1=http://192.168.9.100:2380,myetcd2=http://192.168.9.100:2381,myetcd3=http://192.168.9.100:2382,myetcd4=http://192.168.9.101:2383
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