[Openstack-operators] Newton LBaaS v2 settings

Volodymyr Litovka doka.ua at gmx.com
Fri Dec 15 10:43:18 UTC 2017

Hi Grant,

in case of Octavia, when you create healthmonitor with parameters of 

$ openstack loadbalancer healthmonitor create
usage: openstack loadbalancer healthmonitor create [-h]
                                                    [-c COLUMN]
[--max-width <integer>]
[--prefix PREFIX]
                                                    [--name <name>] --delay
[--expected-codes <codes>]
--timeout <timeout>
--max-retries <max_retries>
[--url-path <url_path>]
[--max-retries-down <max_retries_down>]
[--enable | --disable]

Octavia pushes these parameters to haproxy config on Amphorae agent 
(/var/lib/octavia/<pool id>/haproxy.cfg) like this:

backend f30f2586-a387-40f4-a7b7-9718aebf49d4
     mode tcp
     balance roundrobin
     timeout check 1s
     server 26ae7b5c-4ec4-4bb3-ba21-6c8bccd9cdf8 weight 1 
check inter 5s fall 3 rise 3
     server 611a645e-9b47-40cd-a26a-b0b2a6348959 weight 1 
check inter 5s fall 3 rise 3

so, if you guess it's a problem with backend servers, you can play with 
HealthMonitor parameters in order to set appropriate timeouts for 
backend servers in this pool.

On 12/15/17 12:11 PM, Grant Morley wrote:
> Hi All,
> I wonder if anyone would be able to help with some settings I might be 
> obviously missing for LBaaS. We have a client that uses the service 
> but they are coming across issues with their app randomly not 
> working.  Basically if their app takes longer than 20 seconds to 
> process a request it looks like LBaaS times out the connection.
> I have had a look and I can't seem to find any default settings for 
> either "server" or "tunnel" and wondered if there was a way I could 
> increase or see any default timeout settings through the neutron cli?
> I can only see timeout settings for the "Health Monitor"
> Any help will be much appreciated.
> Regards,
> -- 
> Grant Morley
> Senior Cloud Engineer
> Absolute DevOps Ltd
> Units H, J & K, Gateway 1000, Whittle Way, Stevenage, Herts, SG1 2FP
> www.absolutedevops.io <http://www.absolutedevops.io/> 
> grant at absolutedevops.io <mailto:grant at absolutedevops.io> 0845 874 0580
> _______________________________________________
> OpenStack-operators mailing list
> OpenStack-operators at lists.openstack.org
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Volodymyr Litovka
   "Vision without Execution is Hallucination." -- Thomas Edison

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