what’s the different between ./launcher rebuild app ./launcher bootstrap app they both tool slow , is where any command to modify config like UNICORN_WORKERS and then fast test it

bootstrap: Bootstrap a container for the config based on a template rebuild: Rebuild a container (destroy old, bootstrap, start new)

Like @vinothkannans said, they are basically the same. If you want to tweak memory settings, it’ll take 10 minutes to rebuild before you can see if there is a difference.

Well, more like four minutes on a fast machine :wink:

Rebuild is a shortcut for the sequence: stop, bootstrap, destroy and then start If you only need to amend env, do a destroy and then start

[图片] sam: If you only need to amend env, do a destroy and then start Oh! That’s news to me. So when ./discourse-setup is re-run to change email and memory settings, it needs just ./launcher destroy app ./launcher start app And only if Let’s Encrypt changes does it need to ./launcher rebuild…

I think that only applies to the variables, not anything that happens to the config as a result of those variables?

There’s not, to my knowledge, any guaranteed delineation between “stuff that gets configured on rebuild” and “stuff that gets configured on container start”. That is, for example at the moment UNICORN_WORKERS only gets passed into the container via the environment on boot, however in the future we …

[图片] mpalmer: “stuff that gets configured on container start”. Just a minor point for other people reading, not for @mpalmer who knows all this stuff :slight_smile: . Nothing gets configured on container “start”, only on container “create”. So, for example, ./launcher stop app ./launcher st…

[图片] sam: Rebuild is a shortcut for the sequence: stop, bootstrap, destroy and then start Did you mean: stop, destroy… bootstrap, start? (i.e. destroy would come before bootstrapping. Otherwise how would it know which one to delete from 2 stopped containers?)

Destroy can come after bootstrap since the bootstrapped image hasn’t been started as a container yet. So the only container to be destroyed is the one that currently exists in the Stopped state. I think I explained this to you over the phone as well.

What's the different between rebuild and bootstrap

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codinghorror (Jeff Atwood) 2017 年4 月 2 日 22:07 4

Well, more like four minutes on a fast machine

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What's the different between rebuild and bootstrap

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