Juju 2.3.0 is here!

[Nicholas Skaggs]

The Juju team are extremely pleased to announce the release of Juju 2.3.
Juju is now more versatile, more efficient, and more configurable than ever.

Cross Model Relations deliver a new way of organising your software stack.
Deploy a database in one model and connect it to an application running
another, even one running on a different controller, or even a different
cloud.

For containers at scale, Juju now integrates Canonical's Fan overlay
network system. This allows containers to map network traffic to any other
container on the fan network without distributed databases, consensus
protocols, or any extra overhead.

Juju's support for bundles has made it possible to quickly deploy connected
sets of applications for some time now, but no two use cases are the same.
That's why we have introduced the concept of an 'overlay' bundle - now you
can easily add your own configuration and tweaks to a bundle at deploy
time. See below for links to more information on this and other key
features.


## How can I get it?


The best way to get your hands on this release of Juju is to install it via
snap packages (see https://snapcraft.io/for more info on snaps).


   snap install juju --classic


Other packages are available for a variety of platforms. Please see the
online documentation at https://jujucharms.com/docs/2.3/reference-install <
https://jujucharms.com/docs/stable/reference-install>. Those subscribed to
a snap channel should be automatically upgraded. If you’re using the
ppa/homebrew, you should see an upgrade available.


For highlights of this release, please see the documentation at

https://jujucharms.com/docs/2.3/whats-new. Further details are below.



## New


* Cross Model Relations:

 - see https://jujucharms.com/docs/2.3/models-cmr


* Persistent Storage:

 - see https://jujucharms.com/docs/2.3/charms-storage


* FAN:

 - see https://jujucharms.com/docs/2.3/charms-fan


* Bundle deployments:

 - Changed flags for deploying bundles to existing machines

 - Bundle deploy flag --bundle-config replaced with --overlay

 - Deploying bundles now supports --dry-run

 - Deploying bundles can now target existing machines


* Update Application Series:

 - see https://jujucharms.com/docs/2.3/howto-updateseries


* Parallelization of the Machine Provisioner:

- Groups of machines will now be provisioned in parallel reducing
deployment time, especially on large bundles.


* open_port and close_port hook tools now support ICMP

- The open_port and close_port hook tools now support opening firewall
access for ICMP. The syntax is:

open_port icmp


* LXD Storage Provider:

 - see https://jujucharms.com/docs/2.3/charms-storage#lxd-(lxd)


## Fixes


* Listing of Juju models is more efficient and can now handle more models
gracefully

* Leadership coordinations is no longer tied to local time which avoids
problems with clock skew and reduces overall load on the database

* Models are now more reliably destroyed and several fixes to avoid
negative impacts while they are being removed


You can check the milestones for a detailed breakdown of the Juju bugs we
have fixed:


https://launchpad.net/juju/+milestone/2.3.0

https://launchpad.net/juju/+milestone/2.3-rc2

https://launchpad.net/juju/+milestone/2.3-rc1

https://launchpad.net/juju/+milestone/2.3-beta3

https://launchpad.net/juju/+milestone/2.3-beta2

https://launchpad.net/juju/+milestone/2.3-beta1



## Known issues

The issues are targeted to be addressed in the upcoming 2.3.1 release.


* Firewaller issues on vmware vsphere https://bugs.launchpad.net/juj
u/+bug/1732665


* LXD broken on vmware
https://bugs.launchpad.net/juju/+bug/1733882


* Can't deploy bundle with map-machines=existing and subordinates
https://bugs.launchpad.net/juju/+bug/1736592


* load spike on controller following remove-application
https://bugs.launchpad.net/juju/+bug/1733708



## Feedback Appreciated!


We encourage everyone to let us know how you're using Juju.


Join us at regular Juju shows - subscribe to our Youtube channel
https://youtube.com/jujucharms

Send us a message on Twitter using #jujucharms, join us at #juju on
freenode, and subscribe to the mailing list at juju at lists.ubuntu.com.


https://jujucharms.com/docs/2.3/contact-us <https://jujucharms.com/docs/s
table/contact-us>


## More information


To learn more about Juju please visit https://jujucharms.com.
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