SSH prompts permission denied (publickey,gssapi-keyex,gssapi-with-mic).

Operating Environment

Docker

Centos7

Problem Description

After the new CentOS 7 container,sshd process starts in Docker, the container is connected through the Docker host SSH, prompting for information:

[Root@centos-cloudera-1 ~]# ssh 10.10.200.4 the
authenticity of host ' 10.10.200.4 (10.10.200.4) ' can ' t be established .
ECDSA key fingerprint is sha256:xn2tjx3zw88qjdbirg7a1k39jyyvcz2vd13iiehp2p0.
ECDSA key fingerprint is md5:1d:76:e4:ec:59:70:8c:7d:da:4b:e9:d7:f2:d0:4b:47.
Are you sure your want to continue connecting (yes/no)? Yes
warning:permanently added ' 10.10.200.4 ' (ECDSA) to the list of known hosts.
Permission denied (publickey,gssapi-keyex,gssapi-with-mic).

Solving Method

1. Remove the existing Openssh-server by Yum and reinstall Openssh-server

#yum-y Remove openssh-server
#yum-y install Openssh-server

2. Set Key #

#sshd-keygen

3. Modify the Pubkeyauthentication option in the Sshd_config configuration file to set this option to Yes

Pubkeyauthentication Yes

4. Start sshd

#/usr/sbin/sshd

5. Connect the container through another server

[Root@centos-cloudera-1 ~]# ssh 10.10.200.4