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本地服务方式搭建etcd集群
IP 功能
172.18.6.101 etcd node 172.18.6.102 etcd node 172.18.6.103 etcd node 172.18.6.104 etcd proxy 172.18.6.105 etcd proxy 172.18.6.106 etcd proxy下载安装etcd二进制文件
以下命令将下载etcd发布版本v3.0.15，并解压后安装至宿主机的/usr/bin目录下，并验证
wget https://github.com/coreos/etcd/releases/download/v3.0.15/etcd-v3.0.15-linux-amd64.tar.gz && tar -vzxf etcd-v3.0.15-linux-amd64.tar.gz && cp etcd-v3.0.15-linux-amd64/etcd* /usr/bin/ && etcdctl --help
分别在需要部署的宿主机中执行如上命令安装etcd与etcdctl两个工具
集群节点部署
172.18.6.101 etcd0
在/etc/systemd/system/目录里创建etcd2.service，其内容如下：
[Unit]Description=etcd2.service[Service]Type=notifyTimeoutStartSec=0Restart=alwaysExecStartPre=-/bin/mkdir -p /data/etcd2ExecStart=/usr/bin/etcd \ --data-dir /data/etcd2 \ --name etcd0 \ --advertise-client-urls http://172.18.6.101:2379,http://172.18.6.101:4001 \ --listen-client-urls http://0.0.0.0:2379,http://0.0.0.0:4001 \ --initial-advertise-peer-urls http://172.18.6.101:2380 \ --listen-peer-urls http://0.0.0.0:2380 \ --initial-cluster-token etcd-cluster-1 \ --initial-cluster etcd0=http://172.18.6.101:2380,etcd1=http://172.18.6.102:2380,etcd2=http://172.18.6.103:2380[Install]WantedBy=multi-user.target
执行如下命令:
# 设置服务自启动systemctl enable /etc/systemd/system/etcd2.service# 启动etcd2systemctl restart etcd2.service
172.18.6.102 etcd1
在/etc/systemd/system/目录里创建etcd2.service，其内容如下：
[Unit]Description=etcd2.service[Service]Type=notifyTimeoutStartSec=0Restart=alwaysExecStartPre=-/bin/mkdir -p /data/etcd2ExecStart=/usr/bin/etcd \ --data-dir /data/etcd2 \ --name etcd1 \ --advertise-client-urls http://172.18.6.102:2379,http://172.18.6.102:4001 \ --listen-client-urls http://0.0.0.0:2379,http://0.0.0.0:4001 \ --initial-advertise-peer-urls http://172.18.6.102:2380 \ --listen-peer-urls http://0.0.0.0:2380 \ --initial-cluster-token etcd-cluster-1 \ --initial-cluster etcd0=http://172.18.6.101:2380,etcd1=http://172.18.6.102:2380,etcd2=http://172.18.6.103:2380[Install]WantedBy=multi-user.target
执行如下命令:
# 设置服务自启动systemctl enable /etc/systemd/system/etcd2.service# 启动etcd2systemctl restart etcd2.service
172.18.6.103 etcd2
在/etc/systemd/system/目录里创建etcd2.service，其内容如下：
[Unit]Description=etcd2.service[Service]Type=notifyTimeoutStartSec=0Restart=alwaysExecStartPre=-/bin/mkdir -p /data/etcd2ExecStart=/usr/bin/etcd \ --data-dir /data/etcd2 \ --name etcd2 \ --advertise-client-urls http://172.18.6.103:2379,http://172.18.6.103:4001 \ --listen-client-urls http://0.0.0.0:2379,http://0.0.0.0:4001 \ --initial-advertise-peer-urls http://172.18.6.103:2380 \ --listen-peer-urls http://0.0.0.0:2380 \ --initial-cluster-token etcd-cluster-1 \ --initial-cluster etcd0=http://172.18.6.101:2380,etcd1=http://172.18.6.102:2380,etcd2=http://172.18.6.103:2380[Install]WantedBy=multi-user.target
执行如下命令:
# 设置服务自启动systemctl enable /etc/systemd/system/etcd2.service# 启动etcd2systemctl restart etcd2.service
集群检查
# 在以上三个节点任意一个节点上执行如下命令，输出如下所示表示正常。$ etcdctl member liste160d83780b9342: name=etcd1 peerURLs=http://172.18.6.102:2380 clientURLs=http://172.18.6.102:2379,http://172.18.6.102:4001 isLeader=false2cb830c4198c7098: name=etcd2 peerURLs=http://172.18.6.103:2380 clientURLs=http://172.18.6.103:2379,http://172.18.6.103:4001 isLeader=false717e65599f151c45: name=etcd0 peerURLs=http://172.18.6.101:2380 clientURLs=http://172.18.6.101:2379,http://172.18.6.101:4001 isLeader=true
代理节点部署
172.18.6.104/172.18.6.105/172.18.6.106 proxy
在/etc/systemd/system/目录里创建etcd2.service，其内容如下：
[Unit]Description=etcd2.service[Service]Type=notifyExecStartPre=-/bin/mkdir -p /data/etcd2ExecStart=/usr/bin/etcd \ --proxy on \ --listen-client-urls http://0.0.0.0:2379,http://0.0.0.0:4001 \ --initial-cluster etcd0=http://172.18.6.101:2380,etcd1=http://172.18.6.102:2380,etcd2=http://172.18.6.103:2380 \ --data-dir /data/etcd2[Install]WantedBy=multi-user.target
执行如下命令:
# 设置服务自启动systemctl enable /etc/systemd/system/etcd2.service# 启动etcd2systemctl restart etcd2.service
测试代理
在172.18.6.103或172.18.6.104或172.18.6.105上执行如下命令
# 输出如下所示表示正常。$ etcdctl member list$ etcdctl member liste160d83780b9342: name=etcd1 peerURLs=http://172.18.6.102:2380 clientURLs=http://172.18.6.102:2379,http://172.18.6.102:4001 isLeader=false2cb830c4198c7098: name=etcd2 peerURLs=http://172.18.6.103:2380 clientURLs=http://172.18.6.103:2379,http://172.18.6.103:4001 isLeader=false717e65599f151c45: name=etcd0 peerURLs=http://172.18.6.101:2380 clientURLs=http://172.18.6.101:2379,http://172.18.6.101:4001 isLeader=true
至此，etcd集群与代理节点搭建完成，每个节点或者代理的数据都放置在宿主机的/data/etcd目录下`
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