Comments (6)
Right, found what the actual problem is — the Procfile
was recently changed from web: mix phoenix.server
to web: MIX_ENV=prod mix phoenix.server
. The server should be using the same MIX_ENV
as the one used to compile the dependencies. Closing the issue 👍
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Looks like the problem was that I was setting MIX_ENV
to staging
(for which I have a staging.exs
config file with a different host name) on that Heroku account; changing that to prod
solved the problem and the dyno kicked the server running again.
Is there a workaround to making this work on Heroku with a MIX_ENV
other than prod
?
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It sounds weird that setting MIX_ENV would be related to rebar being missing, I think there's another issue here. I run applications with MIX_ENV=staging without issues.
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Agree — the app was working before on staging, so I'm not sure what exactly have changed. I filed a ticket on Heroku and unfortunately they said this was out of their scope of support; but the support person did point out the difference in the _build
folder (staging
vs prod
between my staging and production applications), which led me to changing the MIX_ENV
value on staging.
Before doing that, I tried creating a new Heroku account from scratch with identical ENV variables to the staging one (including MIX_ENV=staging
) — deploying the app on the new account resulted in the same error.
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@svileng did you use the "Promote" feature in Heroku to release your app to production? I am facing the same issue after I've created the staging env. So basically, my app has a staging app with MIX_ENV=staging
and when I promote it to prod, I get that rebar3
error message.
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@jorbs Sorry but I cannot remember, I can see this is from 2016, and my memory is not that good 😄
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