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From John Rushford <jjrushf...@gmail.com>
Subject Re: Redundant origin server support
Date Mon, 25 Dec 2017 14:14:26 GMT
Is proxy.config.http.parent_proxy_routing_enable set to 1 in your records.config?

Sent from my iPad

> On Dec 25, 2017, at 6:31 AM, Burak Sarp <sarp_burak@yahoo.com> wrote:
> 
> Firstly thanks for advice,
> 
> we are trying to use parent.config, but we have problems on it.
> when trafficserver is up, it is direct going to parent origin server, I always see parent
hit ats' access log while origin server is up on remap.config
> 
> our parent.config is
> 
> dest_ip=10.31.25.5 parent="10.31.25.6:80" parent_is_proxy=false round_robin=true parent_retry=unavailable_server_retry
unavailable_server_retry_responses=500,502,503
> 
> our remap.config
> 
> map http://10.31.24.4/ http://10.31.25.5/ 
> 
> On Saturday, December 23, 2017, 7:52:34 PM GMT+3, John Rushford <jjrushford@gmail.com>
wrote:
> 
> 
> We use parent.config to provide redundancy and load balance over origins.
> See here for info on configuring parent.config.  
> 
> https://docs.trafficserver.apache.org/en/latest/admin-guide/files/parent.config.en.html?highlight=parent%20config#std:configfile-parent.config
> 
>> On Dec 23, 2017, at 9:28 AM, Miles Libbey <mlibbey@apache.org> wrote:
>> 
>>> On Sat, Dec 23, 2017 at 8:16 AM, Alan Carroll <solidwallofcode@oath.com>
wrote:
>>> You can also use DNS round robin along with setting the server retries to a
>>> non-zero value.
>> 
>> Will that "save" the first request to the dead origin? (or would the
>> error make its way back to the user?)
>> 
>>>> On Sat, Dec 23, 2017 at 10:07 AM, Leif Hedstrom <zwoop@apache.org>
wrote:
>>>> 
>>>> Yeh you can do this with parent.config or possibly the escalate plugin.
>> 
>> The escalate plugin works on missing objects, not dead servers. For
>> instance, perhaps origin1 periodically gets its data from
>> masterorigin, but, sometimes fails. The escalate plugin would have you
>> go to masterorigin when origin1 said it didn't have the content.
>> 
>>>> I’d favor the former if possible, it has a new feature to go to an
>>>> alternative parent/origin on specified errors, as well as load balancing
>>>> etc.
>>>> 
>>>> — Leif
>>>> 
>>>> On Dec 23, 2017, at 5:51 AM, Burak Sarp <sarp_burak@yahoo.com> wrote:
>>>> 
>>>> Hi all,
>>>> 
>>>> Is there any way to cover origin server failover cases on ATS ?
>>>> 
>>>> I mean if origin server is down, ATS will try another origin server..
>>>> 
>>>> Thanks,
>>>> Sarp
>>> 
>>> 
> 
> 

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