ssh分发公钥

生成密钥对，若已有秘钥对，请忽略。

ssh-keygen

进行公钥分发；请按实际情况修改公钥路径以及用户名。例如appuser

for host in vs01 \
    vs02 \
    vs03 \
    vs04; \
    do ssh-copy-id -i ~/.ssh/id_rsa.pub appuser@$host; \
done