安装部署

centos7下安装etcd

$ sudo yum install etcd

启动etcd

$ sudo systemctl enable etcd
$ sudo systemctl start etcd

在etcd里创建一个目录

[alvin@k8s1 ~]$ etcdctl mkdir /alvin
[alvin@k8s1 ~]$ etcdctl ls
/alvin

删除一个etcd里的目录

[alvin@k8s1 ~]$ etcdctl ls
/alvin
[alvin@k8s1 ~]$ etcdctl rmdir /alvin
[alvin@k8s1 ~]$ etcdctl ls

etcd里新建一个文件

[root@k8s1 ~]# etcdctl ls
/registry
[root@k8s1 ~]# etcdctl set /k8s/network/config '{"Network": "10.255.0.0/16"}'
{"Network": "10.255.0.0/16"}
[root@k8s1 ~]# etcdctl ls
/k8s
/registry
[root@k8s1 ~]# etcdctl get /k8s/network/config
{"Network": "10.255.0.0/16"}

配置一下etcd，时其他主机也能访问这里的etcd服务

[root@k8s1 ~]# vim /etc/etcd/etcd.conf
[root@k8s1 ~]# grep -v ^# /etc/etcd/etcd.conf
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_CLIENT_URLS="http://localhost:2379,http://192.168.127.94:2379"
ETCD_NAME="default"
ETCD_ADVERTISE_CLIENT_URLS="http://192.168.127.94:2379"