openstack-ansible-security newalias task fails if disable_ipv6 true

[Alex]

If you set disable_ipv6: true, then the newalias rehash task will fail with:

# newaliases
newaliases: fatal: parameter inet_interfaces: no local interface found for ::1
#

as /etc/postfitx/mynetworks contains:

mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128

which does not exist.

[Bjoern (bjoern-t)]

openstack-ansible is not managing the postfix configuration., I'm not sure how this is related

[Alex (akrohn)]

Just to be clear, this is openstack-ansible-security project, not openstack-ansible (was told in IRC bugs for that still go here). openstack-ansible-security installs and configures postfix (sets interfaces, turns off relaying, etc)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/275768

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/275768
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-security/commit/?id=945bd869f428433d50fefaf523633ac76b699335
Submitter: Jenkins
Branch: master

commit 945bd869f428433d50fefaf523633ac76b699335
Author: Major Hayden <email address hidden>
Date: Wed Feb 3 09:37:37 2016 -0600

    Fix Postfix mynetworks if IPv6 is disabled

    If a deployer sets disable_ipv6 = yes, we should ensure that the
    mynetworks directive in /etc/postfix/main.cf contains only IPv4
    addresses. The `newalias` command fails if IPv6 addresses appear
    in mynetworks but IPv6 is disable system-wide.

    Closes-bug: 1538268
    Change-Id: I45f09d631e9b81554f8463851143fd27c9f51ead