A multi server Landscape Dedicated Server charm.
- app-servers ›
The Landscape systems management tool helps you monitor, manage and update your
entire Ubuntu infrastructure from a single interface. Part of Canonical’s
Ubuntu Advantage support service, Landscape brings you intuitive systems
management tools combined with world-class support.
This charm will deploy the dedicated version of Landscape (LDS), and needs to be
connected to other charms to be fully functional. Example deployments are given
For more information about Landscape, go to http://www.ubuntu.com/management
The typical deployment of Landscape happens using juju-deployer. This charm is
not useful without a deployed bundle of services. Please read below for how to
deploy all services necessary for a functioning install of LDS.
NOTE: This section will be superseded by a juju "bundle", when that is ready.
You can use juju-deployer to greatly simplify the deployment of Landscape to a
real cloud. Inside the charm, there is a "config" directory that contains a
deployer configuration file that encapsulates all the charms and their
configuration options into what we call "deployer targets".
juju-deployer is packaged and available in the juju PPA. If you don't have that
PPA, you can add it like this:
$ sudo add-apt-repository ppa:juju/stable $ sudo apt-get update
Then install deployer:
$ sudo apt-get install juju-deployer
Grab the landscape charm:
$ bzr branch lp:~landscape-charmers/charms/precise/landscape-server/trunk $ cd trunk/config
Prepare the repository and license files (See "Configuration" section for more
$ vim license-file # Put the license text in this file $ vim repo-file # Put the URL part of an APT sources.list line here
Now we are ready to deploy (the -v, -d, -W flags are optional, but nice). The
"landscape" deployer target is the one you should start with. It uses 6
machines plus the juju bootstrap node:
$ juju-deployer -vdW -c landscape-deployments.yaml landscape
NOTE: After juju-deployer finishes, the deployment is not entirely ready yet.
Hooks are still running, and it can be a few minutes until everything is ready.
You can point your browser to the apache2/0 unit and keep reloading until you
see the form to create the first Landscape administrator, and/or follow the
output of juju debug-log until it shows that all hooks are done.
To view what other deployment targets are available, use the list option:
$ juju-deployer -c landscape-deployments.yaml -l
Landscape is a commercial product, as such it needs configuration of a license
and password protected repository before deployment. Please login to your
"hosted account" (on landscape.canonical.com) to gather these details after
purchasing seats for LDS. All information is found by following a link on the
left side of the page called "access the Landscape Dedicated Server archive"
config/landscape-deployments.yaml supports reading a
license-file in the
config directory. Take the license file you downloaded, put it in the file
config/license-file, and juju-deployer should read it in and deploy as
You can also set this as a juju configuration option after deployment
on each deployed landscape-service like:
$ juju set <landscape-service> "license-file=$(cat license-file)"
Put just the URL part of the "deb ..." line into a file called
config/repo-file and juju-deployer should read it in and depoy as usual.
At this time, this setting is not changeable after Landscape has been
$ cat config/repo-file https://username:email@example.com/ $
The included deployment targets will ask Apache to generate a self signed
certificate. While useful for testing, this must not be used for production
For production deployments, you should include the "real" SSL certificate key
pair in the apache charm configuration.
The config/landscape-deployments.yaml deployer configuration file has several
deployment targets available:
Targets that start with an underscore should be ignored as they are used
internally only. Your choice of target should be made taking into consideration
the scaling options available for each one and existing resources in your
The "landscape" target is a good compromise between scalability and resource
usage. This deployment will give you 6 units (plus the bootstrap node):
* single database server, acting as master
* one landscape message server unit, responsible for managing the computers
you have registered with landscape
* one other landscape unit which hosts the other less resource-intensive
* apache, haproxy and rabbitmq-server each in its own unit
There are three common scaling out options for this deployment:
* if you need Landscape to handle more computers, add another landscape-msg
* if you need to allow more concurrent access for administrators, add another
* add another database unit if you want database replication. The replication
configuration happens automatically.
The landscape-max target spreads out almost all of the Landscape services into
their own units and there are a few of other changes too:
* you get two database units, deployed with replication enabled
* you get juju-gui (not necessary, of course, but nice for a visualization
of this more complex deployment)
* landscape is separated into four services:
* landscape-app: contains the app server, which is the part that serves
up what you see in your browser
* landscape-ping: the ping server is used to speed up exchanges between
registered computers and the message server
* landscape-msg: handles the exchanges between landscape and the
* rabbitmq-server, apache and haproxy remain unchanged
The scaling options for the max deployment target are very flexible. You can
add more units of each of the landscape services depending on your needs.
Landscape dense targets
If you are using juju backed by the MAAS provider, and have big enough
machines registered with MAAS, you can try out the dense targets:
These two targets behave like their "landscape" and "landscape-max"
counterparts, but everything is deployed into the bootstrap node using LXC.
The reason it only works with MAAS for now is that MAAS is the only provider so
far that can offer external network connectivity to units deployed into LXC.
The dense targets are most useful for testing and demonstration purposes.
You can customize the Landscape deployment quite a lot. Via the "services"
charm config option you can select exactly which landscape services (or
processes) you want running where, and also how many copies per unit. Look at
the config.yaml file for details on how to use this option.
The Landscape charm is fairly well unit tested and new code changes
should be submitted with unit tests. You can run them like this:
$ sudo apt-get install python-twisted-core $ make test
This charm makes use of juju-deployer and the charm-tools package to enable
end-to-end integration testing. This is how you proceed with running
# Make sure your JUJU_ENV is *not* bootstraped, and: $ sudo apt-get install python-pyscopg2 python-mocker python-psutil $ JUJU_ENV=<env> make integration-test
- (string) The password to use for the landscape DB user. If you change this post-deployment via juju set, you will have to change the password in the DB manually as the charm will not do it for you yet.
- (string) License file for LDS.
- (boolean) Put this landscape service unit into a maintenance mode. Stop all services and prevent any attempts to start them. Cron jobs will also not run. Upgrade schema attempts will still be allowed to process.
- (string) APT repository (URL only) to use for installing Landscape.
- (string) Many landscape services can have multiple instances started up. By altering this setting, you can increase the launch count. A numeric value will tell all capable landscape services on this juju unit to spawn that number of instances. Leave at the default of "AUTO", to let the charm determine the optimum number of services given the discovered properties of the box (RAM, Disk Space, CPU). You can also supply a syntax of: "<service-name>:<number> <service-name>:<number>" as a value, to control the launch of individual services. Services that cannot "scale" in this way will politely ignore these settings.
- (string) Landscape services listed as space-separated entries. Valid services are: appserver, msgserver, pingserver, combo-loader, async-frontend, apiserver, package-upload, jobhandler, package-search, juju-sync, cron and static.
- appserver msgserver pingserver combo-loader async-frontend apiserver package-upload jobhandler package-search juju-sync cron static
- (boolean) When daemons attempt to start, they will first try to update the schema (instead of just validating that it is correct). This should only typically be enabled as part of a landscape maintenance cycle.