On 2 July 2018 at 11:14, Matthias Runge mrunge@matthias-runge.de wrote:
On Mon, Jul 02, 2018 at 03:33:06PM +0100, Trevor Hemsley via CentOS-devel wrote:
On 02/07/18 13:36, Matthias Runge wrote:
Creation of a new SIG "Messaging"
Hereby, I'm asking for comments about founding a new SIG to handle messaging stacks in CentOS. We currently have in CentOS RabbitMQ handling AMQP 0.9, and QPID, which provides messaging using AMQP 1.0. There are also packages supporting Kafka, but not Kafka itself.
Collaborating SIGs would be the Cloud and the Opstools SIGs. Both would be consuming built packages produced by the Messaging SIG.
We also briefly took into consideration to incorporate the newly proposed SIG into one of the others. At the end, messaging is different than Cloud or Operational tools. It doesn't really fit. The best solution seemed to us to have another SIG.
If there are any questions or comments, please don't hesitate to reply to the list, and let's find the best proposal here.
Matthias
Both rabbitmq and qpid packages already exist in EPEL. RabbitMQ is on the latest 3.6.x version but that is dependent on the version of erlang that's available - and EPEL currently supplies R16B-03.18.el7. The 3.6 series is still current and supported AFAIK. Getting a more recent version would mean a rebase of erlang.
Don't know anything about qpid but the EPEL packages are currently 1.38.0-1.el7
So, EPEL is not acceptable in Opstools nor in Cloud. If you want to link against libraries, you'll need to have them available directly in the build system, not via external repositories.
The other thing I really like with the idea of having a SIG is its clear (and small) focus. With that, you don't need to worry that some other package gets overwritten.
It's quite easy to get a package into EPEL. We all know, it happens from time to time, that packages there get upgraded at times you don't really like, especially when that breaks your CI.
So EPEL seems to have 2 different sets of problems occurring. We get told by SIG A that the version of package is too old for them and it needs to be updated. It then gets updated and it breaks SIG B. And shortly later something SIG-B needs is going to break SIG-A.
There is also the problem that the users can't mix and match Sig-A and Sig-B which was the original impetus several of those things being in EPEL. I am looking for ideas on how to better serve both problems but there is a point where it is each SIG needs to either work with each other or make sure that are clear what they can't mix with.