On 2016-11-04 22:52, Roman Shaposhnik wrote:
...
Sure. It is software -- anything's possible. What I'm talking about is
first time experience of users. I got tripped up this week. And then
when I asked around -- turns out a lot of folks get tripped up and
they just don't fight it anymore since it feels like it is "a feature
not
a bug".
Unfortunately, yes. Many people, including a fair number of capable
sysads, regard setting up ssh trusts as a known problem area which they
don't want to touch.
...
Well, that somebody is the community. That's the only way it can work
in Apache.
To get that debate started... Could this piece of the setup task be
automated, abstracted or made more reliable by Ambari?
Failing that - it probably doesn't have to be a big-bang change to
eliminate the direct use of ssh completely. For the first time or
experimental user the two tasks that have an impact are: copying the
binaries and hawq init. Other processes like installing/upgrading PLs
could remain more complex.
Also - what does this mean for dependencies? Does BigTop have an answer
to this sort of requirement, would that be complementary or mutually
exclusive to Ambari's features in this area, how important is continued
support for the command-line installation and non-Ambari distributions,
...
Regards
Alastair
