[openstack-dev] [neutron][lbaas] Pool member status 'ACTIVE' even on health check failure
brandon.logan at RACKSPACE.COM
Tue Jan 20 18:51:15 UTC 2015
Yeah before we get those stats in we'll need to finalize v2 because that
will affect how the API shows those types of stats to the user.
On Mon, 2015-01-19 at 22:33 -0800, Varun Lodaya wrote:
> Hey Brandon,
> Thanks for the response. My bad. Seems there is a small bug in horizon.
> The moment you configure a health monitor, it shows up in the pool. I
> thought it automatically got associated. But when I checked via CLI, it
> was not. After associating it via CLI (not able to associate it via
> horizon, the drop down for health-monitors doesn¹t seem to work), it seems
> to work fine :).
> As per stats, ideally, it¹s good to get counters like:
> ICMP successful requests: x
> ICMP response timeouts: y
> ICMP response failures: z
> HTTP successful responses: a
> HTTP timeouts: b
> Just an initial thought, this sort of verifies that monitors are working
> as expected. Like in current situation, I had to manually login to the
> server to see if the server is catering to any health-monitoring requests.
> Even getting haproxy stats is not very straightforward, as you need to
> open a unix socket in haproxy cfg and restart the haproxy instance which
> might not be possible in production sometimes.
> On 1/19/15, 8:21 PM, "Brandon Logan" <brandon.logan at RACKSPACE.COM> wrote:
> >Hi Varun,
> >Could you tell me which driver you are using? If you're running the
> >HaproxyOnHostPluginDriver then that should do a check every 6 seconds
> >for members being down. However, other drivers may not do this. It's
> >up to the driver.
> >As for providing health monitor stats, those currently are not being
> >provided. There haven't been any plans for that yet because everyone
> >has been focused on getting the v2 API out. Which is almost complete
> >and plan for that to be completed for Kilo-3. If you'd like to be able
> >to retrieve some health stats, please list them and let us know. We'll
> >hopefully be able to get them in after v2 has completed.
> >On Mon, 2015-01-19 at 14:42 -0800, Varun Lodaya wrote:
> >> Hi All,
> >> I am trying to get LBaaS running on stable Juno. I can get all the
> >> LBaaS components correctly installed and working as expected. But I am
> >> facing some issues with the health-monitor. I am not quite sure if
> >> it¹s working as expected.
> >> I have 2 ubuntu servers as members of http-pool and I have stopped
> >> apache process on 1 of the servers. I have HTTP health-monitor
> >> configured on the pool which runs every 1 min and checks for 200
> >> response code on HTTP GET. I was expecting it to FAIL after 3 retries
> >> and make the status ³INACTIVE² for the member where apache is not
> >> running. But for some reason, it¹s always ACTIVE.
> >> Can somebody help me with how is it suppose to work and if it¹s a bug?
> >> Also, currently I don¹t see any health monitor stats with neutron. Is
> >> there any plan to get health monitor stats in future releases?
> >> Thanks,
> >> Varun
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