FYI, we are using windows server 2019 nodes and open jdk 21 but getting below error, Can you please help?
[image: image.png] On Fri, Nov 28, 2025 at 6:57 PM Johnson Sadhasivam < [email protected]> wrote: > Hi Jim, > > Thank you for the advice regarding the upgrade path. > > I apologize for the confusion; we have decided to change our approach. We > are now planning a fresh installation of Apache NiFi 2.6 on new servers > (dev2, stage2, and prod2), setting up a three-node cluster in each > environment. > > Could you please provide the relevant documentation or the steps we should > follow for a new NiFi 2.6 cluster installation? > > Since we are looking at a major jump, how stable would you rate the latest > NiFi 2.6 release for production use right now? > > Kind regards, > > Johnson > On Tue, Nov 25, 2025 at 2:30 PM Jim Halfpenny <[email protected]> > wrote: > >> Hi Johnson, >> Here's some general advice for upgrading your NiFi 1.17 installation. >> There have been a lot of changes since NiFi 1.17 so you won't be able to >> jump straight to the latest version. >> >> - NiFi 1.x is no longer maintained so ideally you want to aim to >> upgrade to NiFi 2. >> - Because you are on NiFi 1.17 you would need to upgrade to the >> latest version of NiFi 1 (1.28.0) before you can upgrade to NiFi 2.x. >> - The NiFi documentation is good, I would suggest starting there -> >> https://nifi.apache.org/documentation/v1/. The admin guide has some >> useful information on upgrading your NiFi cluster. >> - Make sure you back up your NiFi installation before you begin >> upgrading and test the upgrade in a non-production environment before >> doing >> this for real. >> - There are a lot of features and processors deprecated in NiFi 2, so >> you will need to make sure that you thoroughly test your workflows. >> >> Kind regards, >> Jim >> >> On Mon, 24 Nov 2025 at 14:47, Sadhasivam, Johnson via dev < >> [email protected]> wrote: >> >>> Hi Team, >>> >>> We are planning to upgrade our current Apache NiFi environment, which is >>> running a three-node cluster on version 1.17.0 (attached screenshot for >>> your reference). >>> >>> Could you please advise on the latest stable version of NiFi that you >>> recommend for this upgrade? >>> >>> Additionally, please share any relevant documentation that includes the >>> installation steps. >>> >>> >>> [image: image.png] >>> Thanks, >>> Johnson Sadhasivam >>> >>
