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- :title: Running an SSH service
- :description: A screencast of installing and running an sshd service
- :keywords: docker, example, package installation, networking
- .. _running_ssh_service:
- SSH Daemon Service
- ==================
- .. include:: example_header.inc
- **Video:**
- I've created a little screencast to show how to create an SSHd service
- and connect to it. It is something like 11 minutes and not entirely
- smooth, but it gives you a good idea.
- .. note::
- This screencast was created before Docker version 0.5.2, so the
- daemon is unprotected and available via a TCP port. When you run
- through the same steps in a newer version of Docker, you will
- need to add ``sudo`` in front of each ``docker`` command in order
- to reach the daemon over its protected Unix socket.
- .. raw:: html
- <iframe width="815" height="450" frameborder="0"
- sandbox="allow-same-origin allow-scripts"
- srcdoc="<body><script type="text/javascript"
- src="https://asciinema.org/a/2637.js"
- id="asciicast-2637" async></script></body>">
- </iframe>
-
- You can also get this sshd container by using:
- .. code-block:: bash
- sudo docker pull dhrp/sshd
- The password is ``screencast``.
- **Video's Transcription:**
- .. code-block:: bash
- # Hello! We are going to try and install openssh on a container and run it as a service
- # let's pull ubuntu to get a base ubuntu image.
- $ docker pull ubuntu
- # I had it so it was quick
- # now let's connect using -i for interactive and with -t for terminal
- # we execute /bin/bash to get a prompt.
- $ docker run -i -t ubuntu /bin/bash
- # yes! we are in!
- # now lets install openssh
- $ apt-get update
- $ apt-get install openssh-server
- # ok. lets see if we can run it.
- $ which sshd
- # we need to create privilege separation directory
- $ mkdir /var/run/sshd
- $ /usr/sbin/sshd
- $ exit
- # now let's commit it
- # which container was it?
- $ docker ps -a |more
- $ docker commit a30a3a2f2b130749995f5902f079dc6ad31ea0621fac595128ec59c6da07feea dhrp/sshd
- # I gave the name dhrp/sshd for the container
- # now we can run it again
- $ docker run -d dhrp/sshd /usr/sbin/sshd -D # D for daemon mode
- # is it running?
- $ docker ps
- # yes!
- # let's stop it
- $ docker stop 0ebf7cec294755399d063f4b1627980d4cbff7d999f0bc82b59c300f8536a562
- $ docker ps
- # and reconnect, but now open a port to it
- $ docker run -d -p 22 dhrp/sshd /usr/sbin/sshd -D
- $ docker port b2b407cf22cf8e7fa3736fa8852713571074536b1d31def3fdfcd9fa4fd8c8c5 22
- # it has now given us a port to connect to
- # we have to connect using a public ip of our host
- $ hostname
- # *ifconfig* is deprecated, better use *ip addr show* now
- $ ifconfig
- $ ssh root@192.168.33.10 -p 49153
- # Ah! forgot to set root passwd
- $ docker commit b2b407cf22cf8e7fa3736fa8852713571074536b1d31def3fdfcd9fa4fd8c8c5 dhrp/sshd
- $ docker ps -a
- $ docker run -i -t dhrp/sshd /bin/bash
- $ passwd
- $ exit
- $ docker commit 9e863f0ca0af31c8b951048ba87641d67c382d08d655c2e4879c51410e0fedc1 dhrp/sshd
- $ docker run -d -p 22 dhrp/sshd /usr/sbin/sshd -D
- $ docker port a0aaa9558c90cf5c7782648df904a82365ebacce523e4acc085ac1213bfe2206 22
- # *ifconfig* is deprecated, better use *ip addr show* now
- $ ifconfig
- $ ssh root@192.168.33.10 -p 49154
- # Thanks for watching, Thatcher thatcher@dotcloud.com
-
- Update:
- -------
- For Ubuntu 13.10 using stackbrew/ubuntu, you may need do these additional steps:
- 1. change /etc/pam.d/sshd, pam_loginuid line 'required' to 'optional'
- 2. echo LANG=\"en_US.UTF-8\" > /etc/default/locale
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