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How do I adjust the instance size that Juju uses?

rated 0 times [ 7] [ 0] / answers: 1 / hits: 1535 / 1 Year ago, sat, january 7, 2023, 7:56:02

I've fired up some of the example instances of Wordpress and MySQL with Juju. A coworker has told me that the default instance size is "small". I'd like to be able to scale this to different sizes on Amazon EC2.

How can I adjust this, is this something defined in a formula or is it an argument I can pass Juju on the command line?

Let's say for example I wanted to deploy wordpress on "large" amazon instances.

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imonove

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3 Years ago

answered 1 Year ago brellked · Accepted Answer

As per this section of the documentation you need to define the
instance-type as part of a machine constraint:

Deploy MySQL on a machine with at least 32GiB of RAM, and at least 8
ECU of CPU power (architecture will be inherited from the environment,
or default to amd64):
juju deploy --constraints "cpu-cores=8 mem=32G" mysql
Deploy to t1.micros on AWS:
juju bootstrap --constraints "cpu-power=0 mem=512M"
Launch all future "mysql" machines with at least 8GiB of RAM and 4
ECU:
juju set-constraints --service mysql mem=8G cpu-cores=4