解决：Failed to get D-Bus connection: Operation not permitted

docker中安装完sshd后，systemctl start sshd，发现报错，错误信息：Failed to get D-Bus connection: Operation not permitted,
解决方法：使用命令sudo docker run -itd -v /home/ubuntu/software/hadoop/:/root/build --privileged=true --name singleNode centos:7 /usr/sbin/init
创建容器，其中–privileged=true是关键