What is the best way to work with multiple models in a controller using the cli?
Akshat Jiwan Sharma
akshatjiwan at gmail.com
Thu Oct 5 07:43:43 UTC 2017
I have deployed a few models using the local juju controller and I want
to execute a bunch of commands on a particular model using the juju-cli.
Lets say I have these three models defined on my controller
This is the sequence of commands I want to run
1. List all the machines in model1
2. Add storage unit to model2
3. Add a relation between applications in model3
These operations may be run in any order. That is first I might run op 2
then op 3 and then op1.
The only constraint is that an operation must be run on a particular model.
Right now I go about this task like so:-
juju switch model1 && juju machines
This works fine. I get all my machines listed for model1. The problem with
this approach is that I'm not sure if
another command is executing a juju switch somewhere and suddenly the model
I'm operating changes from model1 to model2.
For instance suppose that these two commands are run one after the other
juju switch model1 && juju list machines
juju switch model3 && juju add-relation app1 app2
Now how can I be certain that for second command I'm operating on model 3?
As far as I understand juju switches are global.
Meaning a `switch` makes a change "permanent" to all the other commands
My question is how do I "lock" the execution of a certain command to a
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