CentOSでDockerとChef - その１ -

docker

Dockerのインストール

sudo yum install docker-io --enablerepo=epel
sudo /etc/init.d/docker start

ひな形の作成

  • ホストでの作業

  • パスフレーズなしで鍵を作る

      ssh-keygen -t rsa

  • Dockerfile

      FROM    centos
  MAINTAINER      nel215

  RUN     yum update -y
  RUN     yum install -y openssh-server
  RUN     yum install -y sudo
  RUN     yum install -y passwd

  # create user
  RUN     useradd chef
  RUN     passwd -u -f chef

  # sshd
  RUN     sed -i -e "s/^#RSAAuthentication yes/RSAAuthentication yes/g" /etc/ssh/sshd_config
  RUN     sed -i -e "s/^#PubkeyAuthentication yes/PubkeyAuthentication yes/g" /etc/ssh/sshd_config
  RUN     sed -i -e "s/^UsePAM yes/UsePAM no/g" /etc/ssh/sshd_config
  RUN     mkdir -p /home/chef/.ssh
  ADD     ./id_rsa.pub /home/chef/.ssh/authorized_keys
  RUN     chown -R chef /home/chef/.ssh
  RUN     chmod 700 /home/chef/.ssh
  RUN     chmod 600 /home/chef/.ssh/authorized_keys
  RUN     /etc/init.d/sshd start
  RUN     /etc/init.d/sshd stop

  RUN     echo "chef      ALL=(ALL) ALL" >> /etc/sudoers.d/chef

  EXPOSE  22
  CMD     /usr/sbin/sshd -D
    • 作った公開鍵を適当なところに置く

  • selinux無効化

      sudo vim /etc/selinux/config

  SELINUX=disabled

  • build->run

      sudo docker build -t sshd .
  sudo docker run -d -P sshd 
  sudo docker ps

  CONTAINER ID        IMAGE               COMMAND                CREATED             STATUS              PORTS                   NAMES
  a8bf2a22c09d        sshd:latest         /bin/sh -c /usr/sbin   19 minutes ago      Up 19 minutes       0.0.0.0:49156->22/tcp   stoic_feynman

  • sshで接続

      ssh chef@localhost -i ~/.ssh/id_rsa -p 49156

続きは後日…

参考