Hello,
I am using an openshift origin cluster and defined a few dozen objects
grouped in several yaml files.
Now I would like to "package" them into a single template such that
everything can be bootstrapped from scratch in as few steps as possible
from the GUI catalog, but I also want to avoid having to maintain
manually a separate template with all the objects I already defined.
My current solution is to use `oc export --as-template` to wrap all my
objects into a single template, and then I still have to massage the
result a bit: since some of my original objects are templates
themselves, if I just create a new application from the generated
template the "nested templates" will be created effectively as
templates, and I would need more steps and clicks through the GUI to
deploy those.
So I wrote a `flatten` script that, given the template generated by `oc
export`, promotes all nested templates one level up (if an object is a
template, take its parameters and objects, and append them to the
top-level template's, the nested template is then dropped).
So in order to create a "bootstrapping" template in the project, I could
do something like:
oc export --as-template=bootstrap -f objects/ | flatten.py | oc
annotate -f - ... | oc create -f -
I could also pipe the output of `flatten.py` to `oc process` in order to
create all the objects directly (assuming that I'm also specifying the
templates' parameters).
This works well for my specific case, but it doesn't really seem right. So:
- How is this kind of situation usually managed?
- Does openshift itself provide a way (or guidelines on how) to manage
objects/configurations? otherwise what are some usual solutions to this
issue? (note: the question is about whole platforms hosted on openshift,
with a few dozens of interacting services)
- Would a "flatten" feature be a useful companion to `oc export
--as-template`? Or why wouldn't it be?
- Alternatively, is there a way to reference other templates from a
template, such that the GUI catalog allows to display, configure and
deploy a set of templates at once? (the presentation factor is kind of
important in my project)
Thanks,
Jeremiah
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