Docker centos7 install SSH specific steps _docker

Docker Centos7 installs SSH concrete steps, here record, also can help to read the article friend.

A. Download CentOS official image from Docker hub

Hr:centos7 hr$ Docker Pull Centos:7 

When you are finished downloading, view the local repository: Hr:centos7 hr$ docker images the REPOSITORY      TAG         IMAGE ID      CREATED       VIRTUAL SIZE
  centos        7          ce20c473cd8a    7 weeks ago     172.3 MB


Run container
Hr:centos7 hr$ Docker run-i-T centos:7/bin/bash

Two. Install Passwd,openssl,openssh-server

 [root@b5926410fe60/]# yum install passwd OpenSSL openssh-server-y start sshd: #/usr/sbin  /sshd-d this times the following error: [root@ b5926410fe60/]#/usr/sbin/sshd could not load host key:/etc/ssh/ssh_host_rsa_key could not load Host key:/etc/ssh/ssh_host_ecdsa_key could not load host key:/etc/ssh/ssh_host_ed25519_key executes the following command to resolve: [root@b5926410f  E60/]# 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 '] then, modify /etc/ssh/sshd_config configuration information: usepam Yes to Usepam no useprivilegeseparation sandbox to Useprivilegeseparation no [root@b5 926410fe60/]# sed-i "s/#UsePrivilegeSeparation. */useprivilegeseparation no/g"/etc/ssh/sshd_config [ Root@b5926410fe60/]# sed-i "S/usepam.*/usepam no/g"/etc/ssh/sshd_config after the modification, restart sshd [Root@b5926410fe60/]#/usr/sbi n/sshd-d 

Three. Modify Root password

[Root@b5926410fe60/]# passwd Root

Four. View the container IP address (skip this step if the host is a Linux operating system)

[root@b5926410fe60/]# IP addr ls eth0
84:eth0@if85: <BROADCAST,MULTICAST,UP,LOWER_UP> MTU 1500 Qdisc noqueue s Tate 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 
    

Five. Save the current container as a mirror

Hr:centos7 hr$ Docker ps-all
CONTAINER ID IMAGE    COMMAND    CREATED       STATUS          PORTS   NAMES
b5926410fe60 centos:7  "/bin/bash" 4 minutes ago    exited (0) 4 seconds ago      centos7ssh

hr: Centos7 hr$ Docker commit B5926410fe60 Herong/centos7-ssh

Six. Start a new container on the host based on a newly created mirror

--First delete the previous container
hr:centos7 hr$ Docker ps-all
CONTAINER ID    IMAGE   COMMAND       CREATED       STATUS           PORTS        NAMES
4122f818a741    herong/centos7-ssh:latest  "/usr/sbin/sshd"  seconds ago   Exited (0) seconds ago            Happy_mclean hr:centos7 hr$ Docker rm-f 4122f818a741


--running container HR based on a new mirror
: Centos7 hr$ Docker run-d-P 10022:22 herong/centos7-ssh:latest/usr/sbin/sshd-d

--View mapped port success
Hr:centos7 hr$ D Ocker ps-all
CONTAINER ID    IMAGE   COMMAND        CREATED       STATUS       PORTS          NAMES
4966D35FE0A3    herong/centos7-ssh:latest  "/usr/sbin/sshd-d"  3 seconds ago up    3 seconds    0.0.0.0:10022->22/tcp  Compassionate_kowalevski

hr:centos7 hr$ Docker Port 4966d35fe0a3
22/tcp- > 0.0.0.0:10022

Seven. Connecting from host to container

  W If the host is a non-Linux operating system, you need to connect to the container via Docker-machine IP-
  view docker-machine IP address
  hr:centos7 hr$ docker-machine IP Default
  192.168.99.100

  --connect to the container via Docker-machine IP, enter the password previously set to login successfully
  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 your 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 If the host is a Linux operating system, the IP address is connected through the 4th step
  hr:centos7 hr$ ssh root@172.17.0.2-p 10022

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