Hi,
It's probably best for you to not ask why we're doing the following,
but here's what we're trying to achieve:
We'd like to programmatically edit our Hiera data, and we're using the
YAML backend. I can successfully load the correct YAML file and make
the changes we require. However, we've hit upon a bit of a stumbling
block if the YAML file contains an interpolation token, if gets
'corrupted' by the default Ruby YAML emitter like so:
ipaddress: "%{::ipaddress_eth0}"
becomes
ipaddress: ! '%{::ipaddress_eth0}'
When I inspect the data following the load of the YAML file, I can see
it's been loaded correctly, so it seems to be when I call YAML.dump()
that it gets 'corrupted'.
Just posting here to see if anyone else has done anything similar and
overcome the same problem; my google-fu led me down the path of some
custom Psych emitters, but the gist I re-used
(https://gist.github.com/mislav/2023978) exhibited the same issue.
The frustration here is that the data we need to change are guaranteed
to *not* have any interpolation tokens, but I can't see a way to
overwrite just the portion of the file that I've changed, hence why
I'm dumping out the full file again and hitting this issue.
Cheers,
Matt.
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