We have some special rules around our /home directories (using Debian), and the post-install script from Promtail fails on this line:
adduser --system --shell /bin/false "promtail"
I do not believe that Promtail uses the home directory at all. Is there any risk in changing the post-install to:
adduser --no-create-home --system --shell /bin/false "promtail"
And is it worth submitting such a change to the Promtail post-install script here?
I haven’t tried, but since the script has a condition to check for user existence you could create the user ahead of time and that should take care of that.
I would say also that you should feel free to submit a pull request (with either an issue or feature request), and it’s up to the Grafana team to decide whether they want to merge.
Yep, I thought a pull request was in order:
It solves at least that issue. 
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