报错信息：
在做好公钥以后，准备进行传输到另一台机器的时候，发生了报错。
报错原因：
1、在CSDN上面找到了问题的根源，是因为/root/.ssh/known_hosts文件里面有传输错误的记录。
2、没有记录的都可以正常传输，至此才找到问题的解决办法。
解决方法：
1、切换到/root/.ssh/：
[root@k8s-master01 ~]# cd /root/.ssh/ [root@k8s-master01 .ssh]# ll total 16 -rw------- 1 root root 1195 Apr 6 03:56 authorized_keys -rw-------. 1 root root 1675 Apr 6 03:56 id_rsa -rw-r--r--. 1 root root 399 Apr 6 03:56 id_rsa.pub -rw-r--r-- 1 root root 1570 Apr 6 03:56 known_hosts
2、找到known_hosts文件，进入：
[root@k8s-master01 .ssh]# vim known_hosts
k8s-master02 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBJIgNyJq9mJps72paESq6nfRVbcs0cSaD/AGeWPTCSyl2IAsfkbvwZe7L5hdBL76NylspcxPnHhq53tspRtNjy4= k8s-master03 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBMLNuBDmO6ZObI+pkUtagbHwN5inDhST+LaKMhpxtplB/TV+Ce3puZbrsl8vGRaM7rEEq6mFziHfScGw2xqifSg= 192.168.1.5 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBN4l62XeL0DIoZwhpg6xlKQ5ZWpir2AQo8HwI4YGw26Dlsis5oNw0/xb8jIBj8o8dGSrTh3fnexq6d/LgZm7DnU= 192.168.1.6 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBDaC79YOclqgKv361OPWWoWlEhkm5aKjGfRQam66ZxLRDsZC8nJWbvivfDXQnfNRmyC3wBnOI1nbsJ8sTtsxLIQ= 192.168.1.3 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBJIgNyJq9mJps72paESq6nfRVbcs0cSaD/AGeWPTCSyl2IAsfkbvwZe7L5hdBL76NylspcxPnHhq53tspRtNjy4= k8s-master01,192.168.1.2 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBCxJMmlc9ZI7uSB31HrYEyBsr3NjJvXF6Ym3JPv2dS9//7Aj+rbDexnTpce1DQ94v8TfTSQ6+vP6lW3scnFcqsI= 192.168.1.4 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBMLNuBDmO6ZObI+pkUtagbHwN5inDhST+LaKMhpxtplB/TV+Ce3puZbrsl8vGRaM7rEEq6mFziHfScGw2xqifSg= k8s-node01 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBN4l62XeL0DIoZwhpg6xlKQ5ZWpir2AQo8HwI4YGw26Dlsis5oNw0/xb8jIBj8o8dGSrTh3fnexq6d/LgZm7DnU= k8s-node02 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBDaC79YOclqgKv361OPWWoWlEhkm5aKjGfRQam66ZxLRDsZC8nJWbvivfDXQnfNRmyC3wBnOI1nbsJ8sTtsxLIQ=
3、哪台机器传输的时候报错就删哪台机器的记录，最后保存退出，然后再次尝试，即可。