etcd3集群部署

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部署环境

主机名IP操作系统node201 10.0.0.201 centos 7.3 64位 node20210.0.0.202centos 7.3 64位node20310.0.0.203centos 7.3 64位

停掉防火墙

systemctl stop firewalld

systemctl disable firewalld

关闭SELinux

编辑/etc/selinux/config

下载etcd

https://github.com/coreos/etcd/releases

cd /usr/local/src

wget https://github.com/coreos/etcd/releases/download/v3.1.7/etcd-v3.1.7-linux-amd64.tar.gz，也可以使用curl或aria2下载

tar zxvf etcd-v3.1.7-linux-amd64.tar.gz

cd etcd-v3.1.7-linux-amd64

添加环境变量export ETCDCTL_API=3，指定客户端工具etcdctl使用api v3和服务器程序etcd进行通信。

使用静态方式创建集群

在node201节点创建etcd.service

[Unit]Description=Etcd ServerAfter=network.targetAfter=network-online.targetWants=network-online.target[Service]Type=notifyWorkingDirectory=/usr/local/src/etcd-v3.1.7-linux-amd64EnvironmentFile=-/usr/local/src/etcd-v3.1.7-linux-amd64/etcd.conf# set GOMAXPROCS to number of processorsExecStart=/usr/local/src/etcd-v3.1.7-linux-amd64/etcd \  --name infra0 \  --initial-advertise-peer-urls http://10.0.0.201:2380 \  --listen-client-urls http://10.0.0.201:2379,http://127.0.0.1:2379 \  --listen-peer-urls http://10.0.0.201:2380 \  --advertise-client-urls http://10.0.0.201:2379 \  --initial-cluster-token etcd-cluster1 \  --initial-cluster infra0=http://10.0.0.201:2380,infra1=http://10.0.0.202:2380,infra2=http://10.0.0.203:2380 \  --initial-cluster-state newRestart=on-failureLimitNOFILE=65536[Install]WantedBy=multi-user.target

在node202节点创建etcd.service

[Unit]Description=Etcd ServerAfter=network.targetAfter=network-online.targetWants=network-online.target[Service]Type=notifyWorkingDirectory=/usr/local/src/etcd-v3.1.7-linux-amd64EnvironmentFile=-/usr/local/src/etcd-v3.1.7-linux-amd64/etcd.conf# set GOMAXPROCS to number of processorsExecStart=/usr/local/src/etcd-v3.1.7-linux-amd64/etcd \  --name infra1 \  --initial-advertise-peer-urls http://10.0.0.202:2380 \  --listen-client-urls http://10.0.0.202:2379,http://127.0.0.1:2379 \  --listen-peer-urls http://10.0.0.202:2380 \  --advertise-client-urls http://10.0.0.202:2379 \  --initial-cluster-token etcd-cluster1 \  --initial-cluster infra0=http://10.0.0.201:2380,infra1=http://10.0.0.202:2380,infra2=http://10.0.0.203:2380 \  --initial-cluster-state newRestart=on-failureLimitNOFILE=65536[Install]WantedBy=multi-user.target

在节点node203创建文件etcd.service

[Unit]Description=Etcd ServerAfter=network.targetAfter=network-online.targetWants=network-online.target[Service]Type=notifyWorkingDirectory=/usr/local/src/etcd-v3.1.7-linux-amd64EnvironmentFile=-/usr/local/src/etcd-v3.1.7-linux-amd64/etcd.conf# set GOMAXPROCS to number of processorsExecStart=/usr/local/src/etcd-v3.1.7-linux-amd64/etcd \  --name infra2 \  --initial-advertise-peer-urls http://10.0.0.203:2380 \  --listen-client-urls http://10.0.0.203:2379,http://127.0.0.1:2379 \  --listen-peer-urls http://10.0.0.203:2380 \  --advertise-client-urls http://10.0.0.203:2379 \  --initial-cluster-token etcd-cluster1 \  --initial-cluster infra0=http://10.0.0.201:2380,infra1=http://10.0.0.202:2380,infra2=http://10.0.0.203:2380 \  --initial-cluster-state newRestart=on-failureLimitNOFILE=65536[Install]WantedBy=multi-user.target

在3个节点执行以下命令

cp etcd.service /usr/lib/systemd/system/

systemctl daemon-reload

systemctl enable etcd

sytemctl start etcd

使用etcdctl版本2查看信息

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