docker centos7 安装ssh具体步骤

hr:centos7 hr$ docker pull centos:7 下载完后，查看本地资源库：hr:centos7 hr$ docker imagesREPOSITORY      TAG         IMAGE ID      CREATED       VIRTUAL SIZE  centos        7          ce20c473cd8a    7 weeks ago     172.3 MB运行容器hr:centos7 hr$ docker run -i -t centos:7 /bin/bash

[root@b5926410fe60 /]# yum install passwd openssl openssh-server -y启动sshd:# /usr/sbin/sshd -D这时报以下错误：[root@ b5926410fe60 /]# /usr/sbin/sshdCould not load host key: /etc/ssh/ssh_host_rsa_keyCould not load host key: /etc/ssh/ssh_host_ecdsa_keyCould not load host key: /etc/ssh/ssh_host_ed25519_key 执行以下命令解决：[root@b5926410fe60 /]# ssh-keygen -q -t rsa -b 2048 -f /etc/ssh/ssh_host_rsa_key -N ''  [root@b5926410fe60 /]# ssh-keygen -q -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key -N ''[root@b5926410fe60 /]# ssh-keygen -t dsa -f /etc/ssh/ssh_host_ed25519_key -N '' 然后，修改 /etc/ssh/sshd_config 配置信息：UsePAM yes 改为 UsePAM no UsePrivilegeSeparation sandbox 改为 UsePrivilegeSeparation no[root@b5926410fe60 /]# sed -i "s/#UsePrivilegeSeparation.*/UsePrivilegeSeparation no/g" /etc/ssh/sshd_config[root@b5926410fe60 /]# sed -i "s/UsePAM.*/UsePAM no/g" /etc/ssh/sshd_config修改完后，重新启动sshd[root@b5926410fe60 /]# /usr/sbin/sshd -D

[root@b5926410fe60 /]# ip addr ls eth084: eth0@if85: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP   link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff  inet 172.17.0.2/16 scope global eth0    valid_lft forever preferred_lft forever  inet6 fe80::42:acff:fe11:2/64 scope link     valid_lft forever preferred_lft forever

hr:centos7 hr$ docker ps -allCONTAINER ID IMAGE    COMMAND    CREATED       STATUS          PORTS   NAMESb5926410fe60 centos:7  "/bin/bash" 4 minutes ago    Exited (0) 4 seconds ago      centos7sshhr:centos7 hr$ docker commit b5926410fe60 herong/centos7-ssh

--先删除之前的容器hr:centos7 hr$ docker ps -allCONTAINER ID    IMAGE   COMMAND       CREATED       STATUS           PORTS        NAMES4122f818a741    herong/centos7-ssh:latest  "/usr/sbin/sshd"  13 seconds ago   Exited (0) 13 seconds ago            happy_mcleanhr:centos7 hr$ docker rm -f 4122f818a741--基于新镜像运行容器hr:centos7 hr$ docker run -d -p 10022:22 herong/centos7-ssh:latest /usr/sbin/sshd -D--查看映射端口是否成功hr:centos7 hr$ docker ps -allCONTAINER ID    IMAGE   COMMAND        CREATED       STATUS       PORTS          NAMES4966d35fe0a3    herong/centos7-ssh:latest  "/usr/sbin/sshd -D"  3 seconds ago    Up 3 seconds    0.0.0.0:10022->22/tcp  compassionate_kowalevskihr:centos7 hr$ docker port 4966d35fe0a322/tcp -> 0.0.0.0:10022

  w 如果宿主机是非linux操作系统，则需要通过docker-machine ip连到容器  -- 查看docker-machine Ip地址  hr:centos7 hr$ docker-machine ip default  192.168.99.100  --通过docker-machine ip 连接到容器，输入之前设置的密码即可登录成功  hr:centos7 hr$ ssh root@192.168.99.100 -p 10022  The authenticity of host '[192.168.99.100]:10022 ([192.168.99.100]:10022)' can't be established.  ECDSA key fingerprint is SHA256:d3JNckcTVv1ASJlwv+IT/bJwlzMC4U1T/PmsKYIHMhQ.  Are you sure you want to continue connecting (yes/no)? yes  Warning: Permanently added '[192.168.99.100]:10022' (ECDSA) to the list of known hosts.  root@192.168.99.100's password:   [root@4966d35fe0a3 ~]# pwd  /root  w 如果宿主机是linux操作系统，则通过第4步查看到的ip地址连接  hr:centos7 hr$ ssh root@172.17.0.2 -p 10022