After discussion the following structure emerged as proposal for the sysadm pages.
A new page  to add the documentation site. This could be publicly linked from the
main page  (or not). This could also be publicly exposed (or not as the current
intranet which is http-basic protected for example).
- Getting started
- How to
- code review ahead of time available (one could always skip it if they don't want to)
- tool unification (sphinx rst, git, ...)
No cons that I can see (well the migration per say but that can be done incrementally :)
Remaining pages to redispatch eventually
- Database inventory
- IDRAC (-> credentials should be moved to credential store if missing first)
- Jenkins -> actually to devel docs
- Pglogical replication