# 生成秘钥，执行如下命令在/root/.ssh/目录下生成秘钥
ssh-keygen -t rsa 

# 复制主机端公钥到所有被控端
ssh-copy-id -i /root/.ssh/id_rsa.pub root@<IP>
ssh-copy-id -i /root/.ssh/id_rsa.pub root@<IP>
...

# 授权
chmod +x icadown 
# 查看帮助
./icadown -h

# 下载所有安装包
./icadown -D

# 下载指定安装包
./icadown -P mysql

# 授权
chmod +x ica
# 查看帮助
./ica -h

# 部署Nginx:
./ica 01

# 部署Keepalived:
./ica 02