docker 镜像 - centos 7 > 未找到 ssh 服务

Question

我在我的 ubuntu 机器上安装了 docker image - centos 7。但没有找到 ssh 服务。所以我无法运行这个服务。

[root@990e92224a82 /]# yum install openssh-server openssh-clients
Loaded plugins: fastestmirror, ovl
Loading mirror speeds from cached hostfile
 * base: mirror.dhakacom.com
 * extras: mirror.dhakacom.com
 * updates: mirror.dhakacom.com
Package openssh-server-6.6.1p1-31.el7.x86_64 already installed and latest version

Package openssh-clients-6.6.1p1-31.el7.x86_64 already installed and latest version
Nothing to do
[root@990e92224a82 /]# ss            
ssh          ssh-agent    ssh-keygen   sshd         ssltap       
ssh-add      ssh-copy-id  ssh-keyscan  sshd-keygen  

如何远程登录docker镜像？

Answer 1

您必须对 Dockerfile 执行以下说明。

RUN yum install -y sudo wget telnet openssh-server vim git ncurses-term
RUN useradd your_account

RUN mkdir -p /home/your_account/.ssh && chown -R your_account   /home/your_account/.ssh/ 

# Create known_hosts
RUN touch /home/your_account/.ssh/known_hosts


COPY files/authorized_keys /home/your_account/.ssh/
COPY files/config          /home/your_account/.ssh/
COPY files/pam.d/sshd      /etc/pam.d/sshd
RUN touch /home/your_account/.ssh/environment
RUN chown -R your_account /home/your_account/.ssh
RUN chmod 400 -R  /home/your_account/.ssh/*
RUN chmod 700 -R  /home/your_account/.ssh/known_hosts
RUN chmod 700  /home/your_account/.ssh/environment


# Enable sshd
COPY files/sshd_config /etc/ssh/
RUN ssh-keygen -f /etc/ssh/ssh_host_rsa_key -N '' -t rsa 

# Add a account into sudoers and this account doesn't need to type his password
COPY files/sudoers /etc/
COPY files/start.sh /root/

我必须删除文件 /etc/pam.d/sshd 上的“pam_nologin.so”，因为当我将 openssh-server 的版本升级到 openssh-server-6.6.1p1-31.el7 时，pam_nologin.so 将不允许远程登录即使文件 /etc/nologin 不存在，任何用户也可以登录。

启动文件

#!/bin/bash
/usr/sbin/sshd -E /tmp/sshd.log

启动centos容器

• docker run -d -t -p $(sshPort):22 --name $(containerName) $(imageName) /bin/bash
• docker exec -d $(containerName) bash -c "sh /root/start.sh"

登录容器

• ssh $(Docker ip) $(sshPort)