SSH Install

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# 必须安装passwd
yum install openssh-server openssh-clients passwd  -y; \
sed -i "s/^UsePAM yes/UsePAM no/g" /etc/ssh/sshd_config; \
echo 123456 | passwd root --stdin; \
ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa; \
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys; \
chmod 0600 ~/.ssh/authorized_keys; \
ssh-keygen -q -N "" -t rsa -f /etc/ssh/ssh_host_rsa_key; \
ssh-keygen -q -N "" -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key; \
ssh-keygen -q -N "" -t ed25519 -f /etc/ssh/ssh_host_ed25519_key; \
/usr/sbin/sshd

SSH Install2

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# 必须安装passwd
yum install openssh-server openssh-clients passwd  -y; \
sed -i "s/^UsePAM yes/UsePAM no/g" /etc/ssh/sshd_config; \
echo 123456 | passwd root --stdin; \
ssh-keygen -q -N "" -t rsa -f /etc/ssh/ssh_host_rsa_key; \
ssh-keygen -q -N "" -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key; \
ssh-keygen -q -N "" -t ed25519 -f /etc/ssh/ssh_host_ed25519_key; \
/usr/sbin/sshd

id_rsa

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chmod 0600 id_rsa

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xxxx
~~~~
xxxx

authorized_keys

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ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCxlCDiJkFEK+cI9i1RltBdzhmkpEOHxGaqJh9CXzkmWRCYE1IaqBQ3ev+kHMShMX48crpdv1mHVrMvt9Kpo7PhkZem+Pd5i+PMVw53MY3Ow0ntoaqK0nBclDieJNmb32BfdI19nm4j6bSyyh8IMmYPsBfTR5wO+5u4cZxXb4I4mocVtvQXa3g7yZHaeEAVL9WfCrWM8/tH/7sAcP3pxdIuoIht/dMBU6wbRt7oPPC7pgw4uDq6y0sHv5SR9zlrmyqusZHDkg+BUaaFnsxnwREuC5Ll1q6ufqNBoUhTETxmZTaqMiwXyKb3gIer8BVctLRoKstNxX08CBiM/1RNzFX3 [email protected]

id_rsa.pub

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ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCxlCDiJkFEK+cI9i1RltBdzhmkpEOHxGaqJh9CXzkmWRCYE1IaqBQ3ev+kHMShMX48crpdv1mHVrMvt9Kpo7PhkZem+Pd5i+PMVw53MY3Ow0ntoaqK0nBclDieJNmb32BfdI19nm4j6bSyyh8IMmYPsBfTR5wO+5u4cZxXb4I4mocVtvQXa3g7yZHaeEAVL9WfCrWM8/tH/7sAcP3pxdIuoIht/dMBU6wbRt7oPPC7pgw4uDq6y0sHv5SR9zlrmyqusZHDkg+BUaaFnsxnwREuC5Ll1q6ufqNBoUhTETxmZTaqMiwXyKb3gIer8BVctLRoKstNxX08CBiM/1RNzFX3 [email protected]

Problem

• System is booting up. Unprivileged users are not permitted to log in yet

Docker Install

• Dockerfile

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FROM centos:centos8
RUN yum install openssh-server openssh-clients passwd  -y; \
sed -i "s/^UsePAM yes/UsePAM no/g" /etc/ssh/sshd_config; \
echo 123456 | passwd root --stdin; \
ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa; \
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys; \
chmod 0600 ~/.ssh/authorized_keys; \
ssh-keygen -q -N "" -t rsa -f /etc/ssh/ssh_host_rsa_key; \
ssh-keygen -q -N "" -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key; \
ssh-keygen -q -N "" -t ed25519 -f /etc/ssh/ssh_host_ed25519_key;
EXPOSE 22
CMD ["/usr/sbin/sshd", "-D"]

• Build

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docker build -t sshd:centos8 .

• Run

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docker run -itd -p 2222:22 sshd:centos8

• Connect

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ssh localhost -p 2222

USE

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ssh [email protected] -p 36000 -P
xxxx