一、环境
| 角色 | 说明 |
|---|---|
| CentOS7 | 192.168.90.71 |
| CentOS7 | 192.168.90.72 |
| CentOS7 | 192.168.90.73 |
| etcd | v3.5.0 |
二、etcd 安装
1、192.168.90.71 操作
1)、下载二进制文件
#下载二进制文件
$ curl -L https://github.com/etcd-io/etcd/releases/download/3.5.0/etcd-3.5.0-linux-amd64.tar.gz -o etcd-3.5.0-linux-amd64.tar.gz
#解压文件
$ tar -xvf etcd-v3.5.0-linux-amd64.tar.gz
#检查版本
$ cd etcd-v3.5.0-linux-amd64
$ ./etcd --version
输出:
etcd Version: 3.5.0
Git SHA: 946a5a6f2
Go Version: go1.16.3
Go OS/Arch: linux/amd64
其余两台机器执行相同操作
2、配置
1)、创建数据目录
#数据目录
$ mkdir -p /opt/etcd/data
$ mkdir -p /opt/etcd/bin
$ mkdir -p /opt/etcd/conf
2、生成配置文件
#1、生成token
$ uuidgen
359ad234-ed7a-46de-91e9-2a6a07a5026a
#2、复制文件
$ cp etcd etcdctl etcdutl /opt/etcd/bin/
#3、创建配置文件
$ cd /opt/etcd/conf/
$ vim etcd.yaml
192.168.90.71 内容如下: 注意:
name: "etcd1"
initial-cluster: "etcd1=http://192.168.90.71:2380,etcd2=http://192.168.90.72:2380,etcd3=http://192.168.90.73:2380"
data-dir: "/opt/etcd/data"
listen-client-urls: "http://0.0.0.0:2379"
listen-peer-urls: "http://0.0.0.0:2380"
initial-advertise-peer-urls: "http://192.168.90.71:2380"
advertise-client-urls: "http://192.168.90.71:2379"
initial-cluster_token: "359ad234-ed7a-46de-91e9-2a6a07a5026a"
initial-cluster_state: "new"
3、生成 etcd.service 文件
vim /etc/systemd/system/etcd.service
[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target
[Service]
Type=notify
WorkingDirectory=/opt/etcd/bin/
EnvironmentFile=/opt/etcd/conf/etcd.yaml
User=root
ExecStart=/opt/etcd/bin/etcd --config-file=/opt/etcd/conf/etcd.yaml
Restart=on-failure
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
其余两台执行相同操作，注意配置文件中的IP更改
三、检查状态
#三台节点启动服务
$ systemctl start etcd
$ cd /opt/etcd/bin/
././etcdctl --endpoints=http://192.168.90.71:2379,http://192.168.90.72:2379,http://192.168.90.73:2379 endpoint status --write-out=table
输出:
+---------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
| ENDPOINT | ID | VERSION | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS |
+---------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
| http://192.168.90.71:2379 | 13c2a075058b8b28 | 3.5.0 | 20 kB | false | false | 3 | 14 | 14 | |
| http://192.168.90.72:2379 | c093dbe4040ce0c | 3.5.0 | 29 kB | true | false | 3 | 14 | 14 | |
| http://192.168.90.73:2379 | 72a90dc7c4a53e40 | 3.5.0 | 20 kB | false | false | 3 | 14 | 14 | |
+---------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
完成
