Client:
Version: 1.12.1
API version: 1.24
Go version: go1.6.2
Git commit: 23cf638
Built: Tue, 27 Sep 2016 12:25:38 +1300
OS/Arch: linux/amd64
Cannot connect to the Docker daemon. Is the docker daemon running on this host?
nemo@Cynthia:~$ docker search ubuntu
Warning: failed to get default registry endpoint from daemon (Cannot connect to the Docker daemon. Is the docker daemon running on this host?). Using system default: https://index.docker.io/v1/
Cannot connect to the Docker daemon. Is the docker daemon running on this host?
nemo@Cynthia:~$
尝试sudo执行：
nemo@Cynthia:~$ sudo docker search ubuntu
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
ubuntu Ubuntu is a Debian-based Linux operating s... 5033 [OK]
ubuntu-upstart Upstart is an event-based replacement for ... 68 [OK]
rastasheep/ubuntu-sshd Dockerized SSH service, built on top of of... 49 [OK]
consol/ubuntu-xfce-vnc Ubuntu container with "headless" VNC sessi... 29 [OK]
ubuntu-debootstrap debootstrap --variant=minbase --components... 27 [OK]
torusware/speedus-ubuntu Always updated official Ubuntu docker imag... 27 [OK]
ioft/armhf-ubuntu [ABR] Ubuntu Docker images for the ARMv7(a... 19 [OK]
nuagebec/ubuntu Simple always updated Ubuntu docker images... 10 [OK]
nickistre/ubuntu-lamp LAMP server on Ubuntu 10 [OK]
nickistre/ubuntu-lamp-wordpress LAMP on Ubuntu with wp-cli installed 7 [OK]
nimmis/ubuntu This is a docker images different LTS vers... 5 [OK]
maxexcloo/ubuntu Base image built on Ubuntu with init, Supe... 2 [OK]
jordi/ubuntu Ubuntu Base Image 1 [OK]
darksheer/ubuntu Base Ubuntu Image -- Updated hourly 1 [OK]
admiringworm/ubuntu Base ubuntu images based on the official u... 1 [OK]
lynxtp/ubuntu https://github.com/lynxtp/docker-ubuntu 0 [OK]
vcatechnology/ubuntu A Ubuntu image that is updated daily 0 [OK]
datenbetrieb/ubuntu custom flavor of the official ubuntu base ... 0 [OK]
teamrock/ubuntu TeamRock's Ubuntu image configured with AW... 0 [OK]
labengine/ubuntu Images base ubuntu 0 [OK]
konstruktoid/ubuntu Ubuntu base image 0 [OK]
esycat/ubuntu Ubuntu LTS 0 [OK]
widerplan/ubuntu Our basic Ubuntu images. 0 [OK]
ustclug/ubuntu ubuntu image for docker with USTC mirror 0 [OK]
webhippie/ubuntu Docker images for ubuntu 0 [OK]
nemo@Cynthia:~$
