Hi Andre, Realized I responded on the wrong thread...
Just wanted to add my thoughts on this. One of the things I have been thinking and working through in creating utilities to automate upgrades (see https://issues.apache.org/jira/browse/NIFI-3663) is creating the ability to migrate to new configurations/settings, especially in the instance that bootstrap.conf or a nifi.properties have been changed. Even master bootstrap and nifi.properties may be subject to upgrade. I think a large pain point is that users have needed to address those changes manually, so automating the migration might help in making an upgrade better. Also when thinking about smoother upgrades, I think there are some additional considerations that may need to be accounted for, such as whether or not certain repos should stay in place or be relocated (e.g. if a repository lives under the conf folder in the older installation, and not external, should that be moved to the newer one?). Or whether an existing flow template or state information (for zookeeper) needs to be migrated into the new installation as well. And how to easily manage a need to rollback if upgrade did not work for whatever reason (e.g. a flow is impacted by upgraded libraries). My hope is that upgrade tool will have a comprehensive approach for these things and also lead us down the road towards supporting rolling upgrades in a cluster in the future. -yolanda On Tue, Apr 25, 2017 at 11:03 AM, Andre F de Miranda <af...@fucs.org> wrote: > dev, > > What do you think about the idea of allowing an user to configure overrides > for the "master" configuration files in order to smooth upgrades? > > In my opinion candidates would be_ bootstrap.conf_ and _nifi.properties_ > > as they contain the links to all other files (logback.xml excluded). > > Upon starting bootstrap and nifi would load first the standard files as it > does today, but once the load is done, the process would proceed to load > the local overrides (reaching its final configuration). > > This way that whenever a user decides to upgrade, it would simply copy or > link the override file to the NiFi folder and voilà! > > I realise this is not particularly a new idea, (YARN uses the "*-site.xml" > to configure local properties and so does a number of other JAVA based > applications I have dealt with) so I am keen to hear your thoughts > > Cheers > -- -- yolanda.m.da...@gmail.com @YolandaMDavis
