RHBA-2016:0259 - Bug Fix Advisory

Topic

Updated packages that resolve various issues are now available for Red Hat
Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7.

Description

Red Hat Enterprise Linux OpenStack Platform provides the facilities for
building a private or public infrastructure-as-a-service (IaaS) cloud
running on commonly available physical hardware. This update includes
several fixes and enhancements, most notably:

• The Erlang port mapper daemon (epmd) can now listen on IPv6 addresses.

In addition, clients can now register and query epmd over IPv6. This,
in turn, now allows Erlang clustering to work in an IPv6-only
environment. Previously, epmd could only bind and listen on IPv4
addresses, thereby preventing the formation of Erlang clusters in
IPv6-only environments. (BZ#1299253)

• There are two modules available for TCP erlang distribution:

inet_tcp_dist and inet6_tcp_dist. The inet6_tcp_dist module was
created by copying the inet_tcp_dist module, and then updating the
address family for IPv6 support. The inet_dist_listen_{min,max}
options were added to the inet_tcp_dist module after the
inet6_tcp_dist module was created from it, but the same change was
never applied to the inet6_tcp_dist module. As a result, the
inet6_tcp_dist module could not use the inet_dist_listen_{min,max}
options, thereby preventing distribution port(s) from being
configured to use a static, known range.

With this release, distribution modules are abstracted. Both inet and
inet6 now share common code to ensure that all available options apply
to both IPv4 and IPv6 distributions. This, of course, includes
inet_dist_listen_{min,max}. (BZ#1299251)

• When checking for a distribution port, RabbitMQ will now check for

IPv6 addresses if no IPv4 addresses are available. This ensures that
RabbitMQ can start successfully in an IPv6-only environment.
Previously, RabbitMQ only checked for IPv4 addresses; if none were
found (as in an IPv6-only environment), the RabbitMQ port check (and
by extension, startup) failed. (BZ#1299214)

Solution

Before applying this update, ensure all previously released errata relevant
to your system have been applied.

Red Hat Enterprise Linux OpenStack Platform 7 runs on Red Hat Enterprise
Linux 7.2.

The Red Hat Enterprise Linux OpenStack Platform 7 Release Notes contain the
following:

• An explanation of the way in which the provided components interact to

form a working cloud computing environment.

• Technology Previews, Recommended Practices, and Known Issues.
• The channels required for Red Hat Enterprise Linux OpenStack Platform 7,

including which channels need to be enabled and disabled.

The Release Notes are available at:
https://access.redhat.com/documentation/en/red-hat-enterprise-linux-openstack-platform/version-7/red-hat-enterprise-linux-openstack-platform-7-release-notes/release-notes

This update is available through 'yum update' on systems registered through
Red Hat Subscription Manager. For more information about Red Hat
Subscription Manager, see:

https://access.redhat.com/documentation/en-US/Red_Hat_Subscription_Management/1/html/RHSM/index.html

Affected Products

• Red Hat OpenStack 7 x86_64

Fixes

• BZ - 1251257 - RFE: Deploy an overcloud with SSL for the public API
• BZ - 1291855 - When aborting due to large distribution, Erlang does not produce a crash dump
• BZ - 1298401 - Memcached fails to start in ipv6 environment
• BZ - 1299214 - Cannot deploy rabbit in an ipv6 environment
• BZ - 1299251 - ipv6 distribution does not honor inet_dist_listen_{min,max}
• BZ - 1299253 - epmd doesn't support IPv6
• BZ - 1299510 - nova-consoleauth fails to parse the ipv6 address in nova.conf/memcached_servers
• BZ - 1303746 - Blocked channels and queues using HA

CVEs

(none)

References

• http://www.redhat.com/security/updates/classification/#normal