[Bug 1312886] New: Flannel service fails on reboot

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1312886

            Bug ID: 1312886
           Summary: Flannel service fails on reboot
           Product: Fedora
           Version: 23
         Component: flannel
          Severity: medium
          Assignee: jchaloup(a)redhat.com
          Reporter: surajd(a)redhat.com
        QA Contact: extras-qa(a)fedoraproject.org
                CC: eparis(a)redhat.com, golang(a)lists.fedoraproject.org,
                    jchaloup(a)redhat.com, linville(a)redhat.com,
                    nhorman(a)redhat.com, vbatts(a)redhat.com



Description of problem: flanneld service fails to start when restarting the
Fedora 23 cloud Vagrant Box.


Version-Release number of selected component (if applicable):

flanneld - 0.5.4
fedora/23-cloud-base vagrant box


How reproducible:

Easily reproducible

Steps to Reproduce:

(pre-requisite = start etcd service on some other machine, here:
192.168.121.45)

1. Get a fedora/23-cloud-base vagrant box and start it.
2. Install flannel using dnf
3. Do configuration of flannel in /etc/sysconfig/flanneld as following

    [root@fedminion2 ~]# cat /etc/sysconfig/flanneld 
    FLANNEL_ETCD="http://192.168.121.45:2379"
    FLANNEL_ETCD_KEY="/fedmaster/network"


4. enable the flannel service to autostart using systemctl
5. exit out of the box, halt it and do vagrant up again.
6. Once inside the machine check the status of flanneld service.

Actual results:

The service fails as:
**Failed to get default interface: Unable to find default route**
This is also reported at
http://ask.projectatomic.io/en/question/3553/flanneld-fails-when-vm-starts/

Expected results:

The service should start

Additional info:

I fixed this problem by changing the value in
"/usr/lib/systemd/system/flanneld.service" of "After=network.target"
to
"After=network-online.target"

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