Release Notes 16.06

These are the release notes for Landscape 16.06.

Highlights

  • Landscape 16.06.1 point release:
  • Automatic update of Ubuntu images in the cloud (trusty and xenial)
  • OpenStack Mitaka
  • Ubuntu 16.04 LTS (“xenial”) support

Changes and new features

This section describes the changes and new features in more detail.

Ubuntu 16.04 LTS support

Landscape 16.06 is the first Landscape release to support both Ubuntu 14.04 LTS
(“trusty”) and Ubuntu 16.04 LTS (“xenial”).

OpenStack Mitaka

The Autopilot in Landscape 16.06 will deploy an OpenStack Mitaka cloud using the
[[https://wiki.ubuntu.com/ServerTeam/OpenStackCharms/ReleaseNotes1604|16.04
OpenStack charms]].

Automatic cloud image refresh

The OpenStack Mitaka cloud deployed by the Autopilot includes two amd64 images
by default: Ubuntu 14.04 LTS (“trusty”) and Ubuntu 16.04 LTS (“xenial”). These
images will be refreshed daily, so if new releases are available, they will be
downloaded and made available in OpenStack’s Glance.

Upgrade notes

Landscape 16.06 supports Ubuntu 16.04 LTS (“xenial”) and Ubuntu 14.04 LTS
(“trusty”). It can only be upgraded from Landscape 16.03.

You can upgrade a Landscape 16.03 running on Ubuntu 14.04 LTS (“trusty”) all the
way up to Landscape 16.06 running on Ubuntu 16.04 LTS (“xenial”).

Quickstart upgrade

If you used the landscape-server-quickstart package to install Landscape 16.03
then you can use this method to upgrade it.

If you are a https://landscape.canonical.com customer, you can select new
version of Landscape in your hosted account at https://landscape.canonical.com
and then run:

    sudo apt-get update
    sudo apt-get dist-upgrade

Alternatively, just add the Landscape 16.06 PPA and run the same commands as
above:

    sudo add-apt-repository ppa:landscape/16.06
    sudo apt-get update
    sudo apt-get dist-upgrade

When prompted, reply with N to any dpkg questions about configuration files so
the existing files stay untouched. The quickstart package will make any needed
modifications to your configuration files automatically.

Non-quickstart upgrade

Follow these steps to perform a non-quickstart upgrade, that is, you did not use
the landscape-server-quickstart package when installing Landscape 16.03:

  • stop all landscape services on all machines that make up your non-quickstart
    deployment, except the database service: sudo lsctl stop
  • add the Landscape 16.06 PPA: sudo add-apt-repository ppa:landscape/16.06
  • refresh the apt database and upgrade:
    sudo apt-get update && sudo apt-get dist-upgrade
  • answer with N to any dpkg questions about Landscape configuration files
  • if you have UPGRADE_SCHEMA enabled in /etc/default/landscape-server, then
    the required schema upgrade will be performed as part of the package upgrade and
    all services will be running at the end. The upgrade is finished.
  • if UPGRADE_SCHEMA is disabled, then you will have failures when the
    services are restarted at the end of the upgrade. That’s expected. You now have
    to perform the schema upgrade manually with this command:
sudo setup-landscape-server

After all these steps are completed, the Landscape services can be started:

sudo lsctl start

Charm upgrade

Starting with Landscape 15.10, Juju deployed Landscape can be upgraded in place.

If you have just one landscape server unit, please follow this procedure:

juju upgrade-charm landscape-server
juju set landscape-server source=ppa:landscape/16.06
juju action do landscape-server/0 pause
juju action do landscape-server/0 upgrade
juju action do landscape-server/0 migrate-schema
juju action do landscape-server/0 resume

For multiple landscape-server units, you should pause all of them, upgrade one
by one, run the migrate-schema command on only one, and then resume all units.

Each action returns an identifier that should be used to check its outcome with
the fetch command before running the next action:

juju action fetch <uuid>

For example:

$ juju action do landscape-server/0 pause
Action queued with id: 72fd7975-3e0b-4b6d-84b9-dbd76d50f6af
$ juju action fetch 72fd7975-3e0b-4b6d-84b9-dbd76d50f6af
status: completed
timing:
  completed: 2015-06-23 19:24:39 +0000 UTC
  enqueued: 2015-06-23 19:24:32 +0000 UTC
  started: 2015-06-23 19:24:33 +0000 UTC

As an example of when it fails, here we are trying to upgrade a unit that hasn’t
been paused before:

$ juju action do landscape-server/0 upgrade
Action queued with id: f3d2343c-33e4-4faf-8c4e-59f796124dd4
$ juju action fetch f3d2343c-33e4-4faf-8c4e-59f796124dd4
message: This action can only be called on a unit in paused state.
status: failed
timing:
  completed: 2015-06-23 19:26:40 +0000 UTC
  enqueued: 2015-06-23 19:26:36 +0000 UTC
  started: 2015-06-23 19:26:38 +0000 UTC

Also, you may want to keep this open in another window, to get an idea of when
the system goes back to idle between each step:

juju status --format=tabular
# or
watch juju status --format=tabular

Ubuntu release upgrade

You can take advantage of the fact that Landscape 16.06 supports both Ubuntu
14.04 LTS (“trusty”) and Ubuntu 16.04 LTS (“xenial”) and upgrade your Landscape
deployment from “trusty” to “xenial”. This section details the upgrade procedure
depending on how you deployed Landscape.

Release upgrade for quickstart deployments

Follow these steps in order:

  • Upgrade Landscape 16.03 to 16.06 while still on Ubuntu 14.04 LTS (“trusty”)
    using the quickstart upgrade method.
  • Configure the release update manager to keep third-party repositories enabled
    by running this command:
echo -e "[Sources]\nAllowThirdParty=yes" | sudo tee 
/etc/update-manager/release-upgrades.d/allow.cfg
  • Upgrade Ubuntu 14.04 LTS (“trusty”) to Ubuntu 16.04 LTS (“xenial”) using the
    do-release-upgrade tool. First try using the tool as is:
sudo do-release-upgrade

If it tells you that no new releases are available, try adding the -d
parameter:

sudo do-release-upgrade -d

Pay close attention to its output: it should say that it is starting an upgrade
to “xenial”. Reboot after the upgrade is done.

  • Stop all Landscape services:
sudo lsctl stop
  • Install the 9.5 postgresql packages:
sudo apt install postgresql-9.5 postgresql-plpython-9.5 postgresql-contrib-9.5 
postgresql-client-9.5 postgresql-9.5-debversion

If you get a warning about /etc/postgresql-common/createcluster.conf while
configuring postgresql-common, select to keep the local version.

  • Drop the newly created 9.5 cluster:
sudo pg_dropcluster 9.5 main --stop
  • Upgrade the 9.3 cluster:
sudo pg_upgradecluster 9.3 main
  • Start Landscape services:
sudo lsctl start
  • Verify that Landscape is working correctly.
  • If you are happy with the upgrade results, the previous 9.3 cluster can be
    dropped:
sudo pg_dropcluster 9.3 main

Release upgrade for manual (non-quickstart) deployments

The release upgrade process for the manual non-quickstart deployment is a bit
more complicated and needs to be done in steps.

Upgrade the APP server first:

  • Upgrade Landscape 16.03 to 16.06 in the APP server, still on Ubuntu 14.04 LTS (“trusty”),
    following the steps outlined in the non-quickstart upgrade section.
  • Configure the release update manager to keep third-party repositories enabled by running this command:
echo -e "[Sources]\nAllowThirdParty=yes" | sudo tee 
/etc/update-manager/release-upgrades.d/allow.cfg
  • Upgrade Ubuntu 14.04 LTS (“trusty”) to Ubuntu 16.04 LTS (“xenial”) using the
    do-release-upgrade tool. First try using the tool as is:
sudo do-release-upgrade
  • If you get a message that no new releases are available, try adding the -d parameter:
sudo do-release-upgrade -d

Pay close attention to its output: it should say that it is starting an upgrade
to “xenial”. Reboot after the upgrade is done.

  • Verify that Landscape is still operating normally.
  • Stop all Landscape services:
sudo lsctl stop

Now we will upgrade the database server:

  • While still on postgresql 9.3, upgrade the server from Ubuntu 14.04 LTS
    (“trusty”) to Ubuntu 16.04 LTS (“xenial”) using the do-release-upgrade tool
    just like before.
  • Install the 9.5 postgresql packages:
sudo apt install postgresql-9.5 postgresql-plpython-9.5 postgresql-contrib-9.5  
postgresql-client-9.5 postgresql-9.5-debversion

If you get a warning about /etc/postgresql-common/createcluster.conf while
configuring postgresql-common, select to keep the local version.

  • Drop the newly created 9.5 cluster:
sudo pg_dropcluster 9.5 main --stop
  • Upgrade the 9.3 cluster:
sudo pg_upgradecluster 9.3 main
  • Start the Landscape services:
sudo lsctl start
  • Verify that Landscape is working correctly.
  • If you are happy with the upgrade results, the previous 9.3 cluster can be dropped:
sudo pg_dropcluster 9.3 main

Release upgrade for Juju deployments

Upgrading the Ubuntu release of servers within a Juju deployment is not
supported at this time.

Other changes of note

Storage devices referenced by IDs

OpenStack Autopilot deployments will use disk IDs when referencing block devices
for storage charms. This requires virtual machines to be configured to supply
these IDs.

If using libvirt (or virt-manager) with KVM, for example, a simple way to
accomplish this is to add a serial number to each disk:

![]kvm-disk-serial.png

Other virtualization technologies have similar concepts. Sometimes it’s called a
“disk UUID”. Please consult the corresponding documentation.

Known issues

This section describes some relevant known issues that might affect your usage
of Landscape 16.06.

Upgrading Landscape with existing clouds

Clouds deployed with a previous version of Landscape will remain working after
Landscape is upgraded to 16.06, but add-hardware cannot be used until the cloud
is redeployed with the upgraded Landscape.

package-search disabled after upgrade to xenial

If Landscape 16.06 on trusty is upgraded to xenial, the
landscape-package-search service will be left disabled due to a
[[https://bugs.launchpad.net/landscape/+bug/1589665|bug]] in the transitioning
from upstart to systemd. As a result, if the host where this service lives is
rebooted, the service will not start on its own.

To fix this, please run this command:

    sudo systemctl enable landscape-package-search

And start the service up manually one last time:

    sudo service landscape-package-search start

Ceph as object autopilot failures

When Ceph is used as object storage (ceph-radosgw), sometimes a bug can be hit
where the radosgw service won’t be running
(https://bugs.launchpad.net/charms/+source/ceph-radosgw/+bug/1577519). This will
usually manifest itself in the Autopilot as a “Wait for SimpleStreams to sync an
image” activity that stays “In progress” forever.

The workaround is to abort the deployment and try again.

Swift storage accounting incomplete in the Autopilot OpenStack dashboard

When Swift is used for storage, it’s possible that the amount of storage
reported in the Autopilot OpenStack dashboard graphs is less than the amount
available.

This is being tracked as
[[https://bugs.launchpad.net/landscape-client/+bug/1588404|bug #1588404]] and
the workaround is to restart landscape-client on all swift-storage units.

Here are some examples on how to do that depending on how Landscape itself was
deployed:

Juju deployed Landscape
  • First, get to the landscape-server/0 unit inside the proper environment. Run
    this from wherever you deployed the Landscape bundle (this is one long line):
juju ssh landscape-server/0 sudo 'JUJU_HOME=/var/lib/landscape/juju-homes/`sudo 
ls -rt /var/lib/landscape/juju-homes/ | tail -1` sudo -u landscape -E bash'
  • Once there, you will have access to the OpenStack environment. Now it’s just
    a matter of issuing the restart command to all swift-storage units:
juju run --service swift-storage 'sudo service landscape-client restart'

Quickstart and Manual (non-quickstart)

  • First you have to ssh into the Landscape server. Something like this:
ssh ubuntu@<server-ip>
  • Now enter the landscape user in the right juju environment (this is one long
    line):
sudo JUJU_HOME=/var/lib/landscape/juju-homes/`sudo ls -rt 
/var/lib/landscape/juju-homes/ | tail -1` sudo -u landscape -E bash
  • And now restart the client service in all swift-storage units:
juju run --service swift-storage 'sudo service landscape-client restart'
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