Add watch option to juju status

[Sandor Zeestraten]

It is about time that that we get an integrated watch command for juju status. It is silly that everyone needs to add their own aliases. Even during Canonical workshops demoing Juju, they have to explain to new users their custom aliases for `watch --color juju status --color".

If it should be default or not, I don't know, but at least add the option.

[Tim McNamara (tim-clicks)]

Will this break portability? Juju's CLI can be run outside of Linux environments where watch(1) may not be available. Perhaps procps has been reimplemented in Go..?

[Andrea Ieri (aieri)]

Adding a link back to #1856527. Although that's a duplicate of this bug, it contains some good discussion about what the requested functionality could look like.

[Vern Hart (vern)]

This came up again this week during a Canonical run juju demo. I imagine this could be a super-customizable feature as what is mentioned in LP#1856527 but for mvp, it could be very simplistic. And for the portability question, for terminals that don't support curses, it could fall back to just repeating the output in a stream.

[Canonical Juju QA Bot (juju-qa-bot)]

This Medium-priority bug has not been updated in 60 days, so we're marking it Low importance. If you believe this is incorrect, please update the importance.

[Haw Loeung (hloeung)]

This is now available:

$ juju help status | grep watch -A2
--watch (= 0s)
    Watch the status every period of time

--
    juju status --watch 5s mysql

    # Show only applications/units in active status