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If I have multiple juju environments defined, I will often want to run a series of commands on one of them. Specifying -e on every call is rather tedious, but changing the default every time you switch projects is also annoying. Is there an environment variable I can set in my shell session to specify which environment all subsequent juju commands should be run against?

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up vote 4 down vote accepted

There are three ways to manage Juju environments within the command line. One way is to set the "default" YAML key to the environment you want to use by default:

default: devel

You can override the default environments.yaml key by passing an -e flag with each Juju command, the value set to which environment you want to use:

juju bootstrap -e staging
juju deploy -e staging mysql
juju status -e production
juju destroy-environment -e devel

Lastly, Juju will look for the JUJU_ENV environment variable. You can export that then reset it to either an empty string or a new value to avoid changing the default environments.yaml key or using the -e flag

marco@work:~$ export JUJU_ENV=production
marco@work:~$ juju bootstrap
2012-11-14 13:55:44,235 INFO Bootstrapping environment 'production' (origin: ppa type: ec2)...
2012-11-14 13:55:45,567 INFO 'bootstrap' command finished successfully

marco@work:~$ export JUJU_ENV=local
marco@work:~$ juju status
2012-11-14 13:55:39,504 INFO Connecting to environment...
2012-11-14 13:55:40,179 ERROR juju environment not found: is the environment bootstrapped?
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