Hi All, I think using CentOS and either Debian or Ubuntu is a good idea. I would pick Debian over Ubuntu for the reason that Nick pointed out in a previous email of DNS issues in Kubernetes. I"ve copy and pasted a section of Nick's previous email.
### Start I've run into issues with Ubuntu images having DNS issues in Kubernetes. https://github.com/kubernetes/kubeadm/issues/787 ### End As for what ends up being the official Docker container I'm fine with either choice Debian or CentOS. On Mon, May 18, 2020 at 2:10 AM Ning Wang <[email protected]> wrote: > Yeah. For binary release, the license is a huge factor. > > On Sun, May 17, 2020 at 2:32 PM Josh Fischer <[email protected]> wrote: > > > Hi All, > > > > When it comes to choosing the official Apache Docker image for Heron we > > have to think of the licensing issues first. Everything that is > installed > > into the container at build time with the exception of the "FROM" > > statement in the Dockerfile must be ALv2 compatible. OpenJDK is under > GPLv2 > > which is not compatible with Apache. However we can get around this if > we > > bring the OpenJDK into the container via a FROM statement. I've copied a > > reply from Dave in our dev list in a previous email. See below. > > > > ######## Start ######## > > Regarding OpenJDK and GPL2 - here is what Roman the VP, Legal wrote when > > answering Beam’s questions. > > > > Roman Shaposhnik commented on LEGAL-503: > > ---------------------------------------- > > > > Hey [~altay] if you would like to continue linking to the Docker release > > artifact from the > > https://beam.apache.org > > you will have: > > 1. Transition to the official ASF dockerhub org: > > https://hub.docker.com/u/apache > > 2. Start including that binary convenience artifact into your VOTE > > threads on Beam releases > > 3. Make sure that all Cat-X licenses are ONLY brought into your > > container via FROM statements > > ######## End ######## > > > > So at the end of the day, we need to use a container that has Java > already > > installed in it so that when we create our official image we can inherit > > that java containing image via a FROM statement. > > > > - Josh > > > > > > On Sun, May 17, 2020 at 4:12 PM H W <[email protected]> wrote: > > > > > We use Centos 7 as well. > > > > > > On Sun, May 17, 2020 at 10:41 AM Nicholas Nezis < > > [email protected]> > > > wrote: > > > > > > > Some thoughts I'd like to add to the discussion: > > > > > > > > Debian and Ubuntu are somewhat similar. Would it make sense to pick > one > > > of > > > > those and pair with Centos? > > > > > > > > I've run into issues with Ubuntu images having DNS issues in > > Kubernetes. > > > > https://github.com/kubernetes/kubeadm/issues/787 > > > > > > > > Ubuntu 14.04 should be removed. It was end of life last year. For > those > > > of > > > > you using Heron in production, is anyone using Ubuntu 16? My vote > would > > > be > > > > to remove it also. For what it's worth, my use case is in K8s and we > > use > > > > the Centos7 image on a Centos 7 OS. > > > > > > > > We should do a test of the official image and helm chart in > Kubernetes > > > > (maybe with Kind https://kind.sigs.k8s.io/ ) as part of our release > > > > process. This might be nice to add as an integration test. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > On Sun, May 17, 2020, 12:37 PM Ning Wang <[email protected]> > wrote: > > > > > > > > > That is a good point. We need to adjust the OS version accordingly > > too. > > > > > > > > > > On Sun, May 17, 2020 at 2:28 AM Windham Wong < > > [email protected] > > > > > > > > > wrote: > > > > > > > > > > > > > > > > > debian 10 has no python 2.7 support. Ubuntu 16.04 has no python > > 3.7+ > > > > dev > > > > > > library support. hope this helps > > > > > > -- > > > > > > Sent from myMail for Android Sunday, 17 May 2020, 11:34AM +08:00 > > from > > > > > Ning > > > > > > Wang [email protected] : > > > > > > > > > > > > >Hi, > > > > > > > > > > > > > >We have talked about it a few times in different places. Let's > > make > > > a > > > > > > >decision here. We don't have enough resources to support many > > docker > > > > > OSes > > > > > > >(technically we only support Debian, Ubuntu, and CentOS but each > > of > > > > them > > > > > > >has multiple versions). > > > > > > > > > > > > > >Things we have agreed on (my understanding) > > > > > > >- for binary release, we are going to choose one OS one > version. I > > > > > > >remember that Debian 9 was the decision. An open question is: do > > we > > > > want > > > > > > to > > > > > > >switch to Debian 10 now? We haven't had a binary release yet, so > > > there > > > > > is > > > > > > >still time. As the main target, I think 1. the image should > > compile > > > > > > >successfully. and 2 the image should be tested: the tools and an > > > > example > > > > > > >topology. > > > > > > > > > > > > > >- for source release, we haven't talked about it very much. > > > > Personally I > > > > > > >feel it is a reasonable expectation that, if we have the Docker > > file > > > > in > > > > > > the > > > > > > >core folders, it should at least compile. Otherwise, it's a > failed > > > > build > > > > > > >hence a failed release. We are not going to test run the tools > and > > > > > > examples > > > > > > >for each release though. > > > > > > > > > > > > > >Finally, a question about OS versions. I believe at least two > > > releases > > > > > > >should be supported because most people don't upgrade to the > > latest > > > > > > version > > > > > > >when it is out in more serious scenarios, hence IMO the second > > > oldest > > > > > > could > > > > > > >often be more useful than the latest one from a convenience > point > > of > > > > > view. > > > > > > >On the other hand, this is too flexible, and we will spend time > > > > thinking > > > > > > >about it again. I think a clear guideline could be helpful to > us. > > > For > > > > > > >example: > > > > > > >- We only include only Debian (popular in the server world) and > > > Ubuntu > > > > > > >(popular in servers and workstations). > > > > > > >- for the main OS (Debian) we choose the latest to compile and > > test > > > > for > > > > > > our > > > > > > >binary release. > > > > > > >- for a given OS, only two versions (most likely the most and > the > > > > second > > > > > > >recent releases) are included in the core source code and they > > need > > > to > > > > > be > > > > > > >fixed ASAP if they don't compile. > > > > > > >- OSs and other versions could be included in a special folder > and > > > but > > > > > > >there is no guarantee that the code will compile. Fixes from the > > > > > community > > > > > > >are welcome. > > > > > > > > > > > > > > > > > > > > >How do you guys think? > > > > > > >--ning > > > > > > > > > > > > > > > > > > > > >
