[Gluster-infra] Infra-related Regression Failures and What We're Doing

Nigel Babu nigelb at redhat.com
Mon Jan 22 11:43:03 UTC 2018

Update: All the nodes that had problems with geo-rep are now fixed. Waiting
on the patch to be merged before we switch over to Centos 7. If things go
well, we'll replace nodes one by one as soon as we have one green on Centos

On Mon, Jan 22, 2018 at 12:21 PM, Nigel Babu <nigelb at redhat.com> wrote:

> Hello folks,
> As you may have noticed, we've had a lot of centos6-regression failures
> lately. The geo-replication failures are the new ones which particularly
> concern me. These failures have nothing to do with the test. The tests are
> exposing a problem in our infrastructure that we've carried around for a
> long time. Our machines are not clean machines that we automated. We setup
> automation on machines that were already created. At some point, we loaned
> machines for debugging. During this time, developers have inadvertently
> done 'make install' on the system to install onto system paths rather than
> into /build/install. This is what is causing the geo-replication tests to
> fail. I've tried cleaning the machines up several times with little to no
> success.
> Last week, we decided to take an aggressive path to fix this problem. We
> planned to replace all our problematic nodes with new Centos 7 nodes. This
> exposed more problems. We expected a specific type of machine from
> Rackspace. These are no longer offered. Thus, our automation fails on some
> steps. I've spent this weekend tweaking our automation so that it works
> on the new Rackspace machines and I'm down to just one test failure[1]. I
> have a patch up to fix this failure[2]. As soon as that patch is merged,
> we can push forward with Centos7 nodes. In 4.0, we're dropping support for
> Centos 6, so this decision makes more sense to do sooner than later.
> We'll not be lending machines anymore from production. We'll be creating
> new nodes which are a snapshots of an existing production node. This
> machine will be destroyed after use. This helps prevent this particular
> problem in the future. This also means that our machine capacity at all
> times is at 100 with very minimal wastage.
> [1]: https://build.gluster.org/job/cage-test/184/consoleText
> [2]: https://review.gluster.org/#/c/19262/
> --
> nigelb

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