Create a docker container that supports SSH

Operating System: VM centos6.5 x64 192.168.240.148

Docker container: centos6.5 x64 172.17.0.3

1. Download the original image

[[Email protected] ~] # Docker pull centos ### generally pull the latest centos7 and centos6.5. Here we use centos6.5 ###

2. install OpenSSH

[[Email protected] ~] # Docker run-I-t kw1073/centos-new4/bin/bashbash-4.1 # Yum-y install OpenSSH-server openssh-clientsbash-4.1 # chkconfig sshd onbash-4.1 # service sshd start ##### display as follows # ####

Generating SSH1 RSA host key:                              [  OK  ]Generating SSH2 RSA host key:                              [  OK  ]Generating SSH2 DSA host key:                              [  OK  ]Starting sshd:                                             [  OK  ]

3. SSH to the host

bash-4.1#ssh 192.168.240.148 -p61618[email protected]‘s password: Last login: Thu Jul 31 22:39:38 2014 from 192.168.240.1[[email protected] ~]#

4. Install passwd

Bash-4.1 # Yum install passwd ### original image centos6.5 on the official docker website does not have passwd, used to modify the password of the root user ### bash-4.1 # passwd rootbash-4.1 # useradd kw1073

5. Use the commit command to save the image

[[Email protected] ~] # Docker PS-l ### view docker ID ###

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[[Email protected] ~] # Docker commit 6b84dba2a9bb kw1073/centos-new4 ### making docker images that support SSH ###

6. Port ing on the host machine

[[Email protected] ~] # Docker run-u-t-P 127.0.0.1: 222: 22 kw1073/centos-new4/bin/bash # Do a Good Job of port ing between the docker image and the host, enter the bash environment ###

7. Start the SSH service in the docker container

bash-4.1#service sshd startbash-4.1#ifconfig

eth0 Link encap:Ethernet HWaddr 82:E2:4F:F5:12:E9          inet addr:172.17.0.3 Bcast:0.0.0.0 Mask:255.255.0.0          inet6 addr: fe80::80e2:4fff:fef5:12e9/64 Scope:Link          UP BROADCAST RUNNING MTU:1500 Metric:1          RX packets:4882 errors:0 dropped:0 overruns:0 frame:0          TX packets:4107 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:1000          RX bytes:27592541 (26.3 MiB) TX bytes:342979 (334.9 KiB)

8. SSH connection on the host machine

[[email protected] ~]#ssh 172.0.0.3The authenticity of host ‘172.17.0.3 (172.17.0.3)‘ can‘t be established.RSA key fingerprint is 40:4f:f2:9a:55:07:9e:a0:cb:42:60:4f:92:fa:90:e7.Are you sure you want to continue connecting (yes/no)? yesWarning: Permanently added ‘172.17.0.3‘ (RSA) to the list of known hosts.[email protected]‘s password: Last login: Thu Jul 31 10:26:24 2014 from 172.17.42.1Connection to 172.17.0.3 closed.

9. Modify the SSH configuration in the container

#### From the previous step, we can see that the SSH connection is incorrect. you can log on, but it will be disconnected immediately upon login ####

Bash-4.1 # sed-I's/usepam Yes/usepam no/'/etc/ssh/sshd_config # modify the sshd configuration file bash-4.1 #/etc/init. d/sshd reload bash-4.1 #/etc/init. d/sshd restart # Restart sshd service stopping sshd: [OK] Starting sshd: [OK]

10. Retry an SSH connection on the host machine.

[[Email protected] Dist] # SSH 172.17.0.3 [email protected]'s password: Last login: Thu Jul 31 11:48:51 2014 from 172.17.42.1-Bash-4.1 # ls or the following connection: [[email protected] Dist] # SSH [email protected]-p222 [email protected]'s password: Last login: thu Jul 31 15:36:56 2014 from 172.17.42.1 #### because of port ing, you can directly log on from the mapped port ###

11. Set the environment variables in the docker container

####### Copy a copy directly from the host ######## [[email protected] Dist] # SCP/root /. bash * 172.17.0.3:/root/

12. ressh to the container on the host machine

[[email protected] dist]# ssh 172.17.0.3 [email protected]‘s password: Last login: Thu Jul 31 15:07:00 2014 from 172.17.42.1 [[email protected] ~]#

13. Save the configured docker container as an image

####### View the currently running docker container ###### [email protected] ~] # Docker PS-

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####### Save the container as an image ###### [[email protected] ~] # Docker commit 89741e6f8e61 kw1073/centos-new517a270866d48429d582aae50b6f3183a4e76c5b4813b1f6e96b5684cb222b100

##### View the current image ######## [[email protected] ~] # Docker Images

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This article is from the "O & M Pawn" blog and will not be reposted!