etcd节点状态 在 Raft 协议中,一个节点可以处于以下三种状态之一: Leader:领导者 Follower:跟随者 Candidate:候选人 etcd节点本身有2种成员状态 learner:无法被选为leader,可通过etcdctl member promete变更 voting:默认,可参与leader选举 Docker方式部署(3节点增到5节点) 添加节点4 docker exec -it db23999d731d etcdctl --endpoints http://localhost:2380,http://localhost:22380,http://localhost:32380 member add s4 --peer-urls=http://localhost:4380 启动节点4 systemctl restart s4.service s4.service 具体配置 使用主机网络--net=host 数据目录映射到--volume=/tmp/etcd/s4:/etcd-data 新增--initial-cluster s4=http://localhost:4380 新增节点4配置--initial-cluster-state existing [Unit] Description=etcd with Docker Documentation=https://github.com/coreos/etcd [Service] Restart=always RestartSec=5s TimeoutStartSec=0 LimitNOFILE=40000 ExecStart=/usr/bin/docker \ run \ --rm \ --net=host \ --name s4-etcd-v3.5.8 \ --volume=/tmp/etcd/s4:/etcd-data \ gcr.io/etcd-development/etcd:v3.5.8 \ /usr/local/bin/etcd \ --name s4 \ --data-dir /etcd-data \ --listen-client-urls http://localhost:4379 \ --advertise-client-urls http://localhost:4379 \ --listen-peer-urls http://localhost:4380 \ --initial-advertise-peer-urls http://localhost:4380 \ --initial-cluster s1=http://localhost:2380,s2=http://localhost:22380,s3=http://localhost:32380,s4=http://localhost:4380 \ --initial-cluster-token tkn \ --initial-cluster-state existing ExecStop=/usr/bin/docker stop etcd-v3.5.8 [Install] WantedBy=multi-user.target 参考链接:
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