How to restore flows from git in NiFi Registry?

1
votes

I'm using GitFlowPersistenceProvider in NiFi Registry 0.3. Today I created another NiFi Registry and I wanted to load all flows from the previous one using the same provider. Unfortunately nothing happens - any buckets nor flows aren't recreated. I tried to create all buckets manually but even then any flows aren't imported.

GitFlowPersistenceProvider documentation states:

When NiFi Registry starts, this provider reads through Git commit histories and lookup these bucket.yml files to restore Buckets and Flows for each snapshot version.

What should I do to load existing flows into new NiFi Registry using GitFlowPersistenceProvider?

2
apache-nifiapache-nifi-registry

2 Answers

3
votes

Unfortunately that documentation is not totally accurate. Currently there is a metadata DB which defaults to an embedded H2, but can also be Postgres, and then the flow storage. You would need to restore both in order to spin up a new instance with the same data.

In the next release there is a new feature where if you start a new instance with a completely empty DB (i.e. no buckets) and the git flow provider, then it will restore everything.

0
votes

You can do the same by stopping nifi-registry 0.4.0 , deleting the database file ( if any) and then starting the nifi registry to rebuild the database based on git repo.

https://issues.apache.org/jira/browse/NIFIREG-209