RHBA-2015:1746 - Bug Fix Advisory

Topic

Updated Installation utility packages that resolve various issues are now
available for Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse)
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 advisory includes
packages for:

• Installation utility ("PackStack").

PackStack is a command-line utility for deploying OpenStack on existing
servers over an SSH connection. Deployment options are provided either
interactively, using the command line, or non-interactively by means of a
text file containing a set of preconfigured values for OpenStack
parameters.

PackStack is suitable for deploying the following types of configurations:

• Single-node proof-of-concept installations, where all controller services

and your virtual machines run on a single physical host. This is referred
to as an all-in-one install.

• Proof-of-concept installations, where there is a single controller node

and multiple compute nodes. This is similar to the all-in-one install
above, except you may use one or more additional hardware nodes for running
virtual machines.

This update addresses the following issues:

• With this update, a new feature in Packstack detects if VXLAN or GRE

encapsulation is being used for OpenStack Networking tenant networks.
If detected, it configures the DHCP agent to use a lower MTU for instances
(1400 bytes). This is due to the fact that when using encapsulation, the
VXLAN or GRE headers add some bytes to the Ethernet packet. If the instance
MTU has the same size as the host MTU, some packets may be too large,
resulting in slow network performance. As a result of this new feature,
the lower MTU ensures the network traffic to instances performs
adequately. (BZ#1138958)

• Previously, Packstack did not change the default_floating_pool parameter

in the DEFAULT section of the /etc/nova/nova.conf file on the controller
node based on the value set for CONFIG_NOVA_NETWORK_DEFAULTFLOATINGPOOL
in the Packstack answer file.
With this update, the nova.conf file will contain the same value for
default_floating_pool parameter as CONFIG_NOVA_NETWORK_DEFAULTFLOATINGPOOL
in the Packstack answer file. (BZ#1210411)

Solution

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

Red Hat Enterprise Linux OpenStack Platform 5 for Red Hat Enterprise
Linux 7 runs on Red Hat Enterprise Linux 7.1.

The Red Hat Enterprise Linux OpenStack Platform 5 for RHEL 7 Release Notes
(see the References section) 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

5 for Red Hat Enterprise Linux 7, including which channels need to be
enabled and disabled.

This update is available through the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/site/articles/11258

Affected Products

• Red Hat OpenStack 5.0 for RHEL 7 x86_64

Fixes

• BZ - 1115896 - Novnc should be set up with https
• BZ - 1138958 - RFE Set MTU to 1400 in dnsmasq-neutron.conf if VXLAN or GRE are being installed
• BZ - 1210411 - DEFAULTFLOATINGPOOL variable is ignored

CVEs

(none)

References

• https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux_OpenStack_Platform/5/html/Release_Notes/index.html