Amit, you are right. If there is no DB stored on NFS, then both DB and one
UAA instance should be available to handle requests.


On Tue, Sep 15, 2015 at 8:05 AM, Lomov Alexander <
alexander.lomov(a)altoros.com> wrote:

Thank you for clarification. This makes sense.

On Sep 15, 2015, at 1:09 PM, CF Runtime <cfruntime(a)gmail.com> wrote:

Couple of updates here for clarity. No databases are stored on NFS in any
default installation. NFS is only used to store blobstore data. If you are
using the postgres job from cf-release, since it is single node there will
be downtime during a stemcell deploy.

I talked with Dies from Fujitsu earlier and confirmed they are NOT using
the postgres job but an external non-cf deployed postgres instance. So
during a deploy, the UAA db should be up and available the entire time.

The issue they are seeing is that even though the database is up, and I'm
guessing there is at least a single node of UAA up during the deploy, there
are still login failures.

Joseph
OSS Release Integration Team

On Mon, Sep 14, 2015 at 6:39 PM, Filip Hanik <fhanik(a)pivotal.io> wrote:

Amit, see previous comment.

Postgresql database is stored on NFS that is restarted during nfs job

update.

UAA, while being up, is non functional while the NFS job is updated
because it can't get to the DB.



On Mon, Sep 14, 2015 at 5:09 PM, Amit Gupta <agupta(a)pivotal.io> wrote:

Hi Ricky,

My understanding is that you still need help, and the issues Jiang and
Alexander raised are different. To avoid confusion, let's keep this thread
focused on your issue.

Can you confirm that you have two UAA VMs in separate bosh jobs,
separate AZs, etc. Can you confirm that when you roll the UAAs, only one
goes down at a time? The simplest way to affect a roll is to change some
trivial property in the manifest for your UAA jobs. If you're using v215,
any of the properties referenced here will do:


https://github.com/cloudfoundry/cf-release/blob/v215/jobs/uaa/spec#L321-L335

You should confirm that only one UAA is down at a time, and comes back
up before bosh moves on to updating the other UAA.

While this roll is happening, can you just do `CF_TRACE=true cf auth
USERNAME PASSWORD` in a loop, and if you see one that fails, post the
output, along with noting the state of the bosh deploy when the error
happens.

Thanks,
Amit

On Mon, Sep 14, 2015 at 10:51 AM, Amit Gupta <agupta(a)pivotal.io> wrote:

Ricky, Jiang, Alexander, are the three of you working together? It's
hard to tell since you've got Fujitsu, Gmail, and Altoros email addresses.
Are you folks talking about the same issue with the same deployment, or
three separate issues.

Ricky, if you still need assistance with your issue, please let us
know.

On Mon, Sep 14, 2015 at 10:16 AM, Lomov Alexander <
alexander.lomov(a)altoros.com> wrote:

Yes, the problem is that postgresql database is stored on NFS that is
restarted during nfs job update. I’m sure that you’ll be able to run
updates without outage with several customizations.

It is hard to tell without knowing your environment, but in common
case steps will be following:


1. Add additional instances to nfs job and customize it to make
replications (for instance use this docs for release customization [1])
2. Make your NFS job to update sequently without our jobs updates
in parallel (like it is done for postgresql [2])
3. Check your options in update section [3].


[1] https://help.ubuntu.com/community/HighlyAvailableNFS
[2]
https://github.com/cloudfoundry/cf-release/blob/master/example_manifests/minimal-aws.yml#L115-L116
[3]
https://github.com/cloudfoundry/cf-release/blob/master/example_manifests/minimal-aws.yml#L57-L62

On Sep 14, 2015, at 9:47 AM, Yitao Jiang <jiangyt.cn(a)gmail.com> wrote:

On upgrading the deployment, the uaa not working due the uaadb
filesystem hangup.Under my environment , the nfs-wal-server's ip changed
which causing uaadb,ccdb hang up. Hard reboot the uaadb, restart uaa
service solve the issue.

Hopes can help you.

On Mon, Sep 14, 2015 at 2:13 PM, Yunata, Ricky <
rickyy(a)fast.au.fujitsu.com> wrote:

Hello,



I have a question regarding UAA in Cloud Foundry. I’m currently
running Cloud Foundry on Openstack.

I have 2 availability zones and redundancy of the important VMs
including UAA.

Whenever I do an upgrade of either stemcell or CF release, user will
not be able to do CF login when when CF is updating UAA VM.

My question is, is this a normal behaviour? If I have redundant UAA
VM, shouldn’t user still be able to still login to the apps even though
it’s being updated?

I’ve done this test a few times, with different CF version and
stemcells and all of them are giving me the same result. The latest test
that I’ve done was to upgrade CF version from 212 to 215.

Has anyone experienced the same issue?



Regards,

Ricky
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