[Bug 1149882] New: docker socket not found errors

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1149882

            Bug ID: 1149882
           Summary: docker socket not found errors
           Product: Fedora
           Version: 20
         Component: docker-io
          Assignee: lsm5(a)fedoraproject.org
          Reporter: bparees(a)redhat.com
        QA Contact: extras-qa(a)fedoraproject.org
                CC: admiller(a)redhat.com, golang(a)lists.fedoraproject.org,
                    hushan.jia(a)gmail.com, jperrin(a)centos.org,
                    lsm5(a)fedoraproject.org, mattdm(a)redhat.com,
                    mgoldman(a)redhat.com, s(a)shk.io, thrcka(a)redhat.com,
                    vbatts(a)redhat.com



Description of problem:
When run as a service, I frequently run into issues with the
/var/run/docker.sock being reported as not found, but if i shutdown the
service, remove /var/run/docker.sock, and run "docker -d" manually instead, I
have no such problem.

In addition, systemctl start docker does not appear to consistently create
/var/run/docker.sock, though the docker daemon reports as running.


Version-Release number of selected component (if applicable):
docker-io-1.2.0-2.fc20.x86_64

How reproducible:
Intermittent, most consistently recreates when bind mounting the docker socket
into a docker container and trying to perform docker operations from within
that container.

Additional info:
Disabling selinux has no effect on the results.

Sample output:

running as a service:

[bparees@bparees ~]$ ps ax | grep docker
10731 ?        Ssl    0:00 /usr/bin/docker -d -H fd:// --selinux-enabled
11021 pts/6    S+     0:00 grep --color=auto docker
[bparees@bparees ~]$ ls -l /var/run/docker*
-rw-r--r--. 1 root root 5 Oct  6 16:08 /var/run/docker.pid
[bparees@bparees ~]$ docker ps
2014/10/06 16:10:03 Get http:///var/run/docker.sock/v1.14/containers/json: dial
unix /var/run/docker.sock: no such file or directory

restarting manually:

[bparees@bparees ~]$ sudo systemctl stop docker
[sudo] password for bparees: 
Warning: Stopping docker, but it can still be activated by:
  docker.socket
[bparees@bparees ~]$ sudo docker -d >& /tmp/out &
[1] 11343
[bparees@bparees ~]$ ls -l /var/run/docker.*
-rw-r--r--. 1 root root   5 Oct  6 16:10 /var/run/docker.pid
srw-rw----. 1 root docker 0 Oct  6 16:10 /var/run/docker.sock
[bparees@bparees ~]$ docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED            
STATUS              PORTS               NAMES

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