[root@centos ~]# docker pull centos
Post http:///var/run/docker.sock/v1.19/images/create?fromImage=centos%3Alatest: dial unix /var/run/docker.sock: no such file or directory. Are you trying to connect to a TLS-enabled daemon without TLS?
[root@centos ~]# ^C
[root@centos ~]# uname -a
Linux centos 4.4.131-1.el6.elrepo.x86_64 #1 SMP Wed May 2 14:51:15 EDT 2018 x86_64 x86_64 x86_64 GNU/Linux
[root@centos ~]# docker search centos
Get http:///var/run/docker.sock/v1.19/images/search?term=centos: dial unix /var/run/docker.sock: no such file or directory. Are you trying to connect to a TLS-enabled daemon without TLS?
[root@centos ~]# ps -ef|grep docker
root 2501 1 0 15:04 pts/0 00:00:01 /usr/bin/docker -d
root 2854 2062 0 15:25 pts/0 00:00:00 grep docker
[root@centos ~]# service docker status
docker dead but subsys locked
[root@centos ~]# service docker start
Starting docker: [ OK ]
[root@centos ~]# docker pull centos
latest: Pulling from centos
72a57cd6f59e: Pull complete
437b26967a35: Pull complete
6ee24d16365c: Pull complete
Digest: sha256:4b63b3e9fe127c07a15458af7fcc187980a9fff8069063057bbc9c282f26f539
Status: Downloaded newer image for centos:latest
[root@centos ~]#
Docker报错:Post http:///var/run/docker.sock/v1.19/
原文：http://blog.51cto.com/sf1314/2116279