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docs: Add faq entry about production readiness

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James Shubin
2018-02-18 13:34:21 -05:00
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@@ -9,6 +9,55 @@ I wanted a next generation config management solution that didn't have all of
the design flaws or limitations that the current generation of tools do, and no
tool existed!
### Is this project ready for production?
Compared to some existing automation tools out there, mgmt is a relatively new
project. It is probably not as feature complete as some other software, but it
also offers a number of features which are not currently available elsewhere.
Because we have not released a `1.0` release yet, we are not guaranteeing
stability of the internal or external API's. We only change them if it's really
necessary, and we don't expect anything particularly drastic to occur. We would
expect it to be relatively easy to adapt your code if such changes happened.
As with all software, bugs can occur, and while we make no guarantees of being
bug-free, there are a number of things we've done to reduce the chances of one
causing you trouble:
1. Our software is written in golang, which is a memory-safe language, and which
is known to reduce or eliminate entire classes of bugs.
2. We have a test suite which we run on every commit, and every 24 hours. If you
have a particular case that you'd like to test, you are welcome to add it in!
3. The mgmt language itself offers a number of safety features. You can
[read about them in the introductory blog post](https://purpleidea.com/blog/2018/02/05/mgmt-configuration-language/).
Having said all this, as with all software, there are still missing features
which some users might want in their production environments. We're working hard
to get all of those implemented, but we hope that you'll get involved and help
us finish off the ones that are most important to you. We are happy to mentor
new contributors, and have even [tagged](https://github.com/purpleidea/mgmt/issues?q=is%3Aissue+is%3Aopen+label%3Amgmtlove)
a number of issues if you need help getting started.
Some of the current limitations include:
* Auth hasn't been implemented yet, so you should only use it in trusted
environments (not on publicly accessible networks) for now.
* The number of built-in core functions is still small. You may encounter
scenarios where you're missing a function. The good news is that it's relatively
easy to add this missing functionality yourself. In time, with your help, the
list will grow!
* Large file distribution is not yet implemented. You might want a scenario
where mgmt is used to distribute large files (such as `.iso` images) throughout
your cluster. While this isn't a common use-case, it won't be possible until
someone wants to write the patch. (Mentoring available!) You can workaround this
easily by storing those files on a separate fileserver for the interim.
* There isn't an ecosystem of community `modules` yet. We've got this on our
roadmap, so please stay tuned!
We hope you'll participate as an early adopter. Every additional pair of helping
hands gets us all there faster! It's quite possible to use this to build useful
automation today, and we hope you'll start getting familiar with the software.
### Why did you use etcd? What about consul?
Etcd and consul are both written in golang, which made them the top two