> On Jun 6, 2019, at 18:57, zzz <z...@apache.org> wrote:
>
> We have been using those pages to monitor Hostdb and connection count table
> in LI. We found it handy and useful. Not sure what’s the alternative way to
> do similar things.
Hmm, you mean dns connections ? Regular connection counts have metrics.
As for HostDB, if there are metrics you need which are not available, you ought
to add those to the metrics list.
I find it somewhat odd to use the HTML pages for metrics, so I’m curious to
hear more details on what metrics you actually need, and how we can get this
into the regular metrics instead.
>
> There will be no performance impact unless you issue a request. When you
> want to debug, the box is already in some bad state anyway. It’s definitely
> not something you would request every seconds in prod though.
Yes that’s not the reason to remove this. It’s a really ugly backdoor with old
code producing HTML. We have removed almost everything else from the old web
UI, this is the last remaining piece.
— Leif
>
> We do have the special ACL to make it only serve from localhost.
>
>> On Thu, Jun 6, 2019 at 2:34 PM Leif Hedstrom <zw...@apache.org> wrote:
>>
>> Hi all,
>>
>> we have this feature where ATS can server some “static” pages for stats
>> and introspection. I’d like to propose that we remove this feature for
>> v9.0.0, opening up the door for better implementations via the traffic_ctl
>> reworks.
>>
>> I understand that this would leave us without some of this feature for the
>> short term. However, I think that’s ok for a number of reasons:
>>
>> 1. It’s mostly a debugging tool (IMO), turning it on in production is
>> risky at best. Several features (such as searching the cache), can kill the
>> server performance.
>>
>> 2. There are some tools that can do some of what this does, e.g. the
>> traffic_cache_tool, and various metrics and logging, as well as diagnostics.
>>
>> 3. It’s not particularly secure (there’s no ACLs, other than making
>> obscure URL names). And it’s not particularly easy to setup either :).
>>
>>
>> I’m ok not doing this if there’s at least someone who depends on and need
>> this feature. I’d expect at a minimum it would still go away in ATS v10.0.0.
>>
>> And discuss!
>>
>> — Leif
>>
>>
>>
