[squid-users] The usage of extended SNMPD commands to monitor squid.

[ngtech1ltd at gmail.com]

Hey Matus,

The Squid-Cache project to my knowledge doesn't have a developer expert or have enough "free" time to maintain the SNMP parts of the code.
Amos and Alex can correct me if I'm wrong.
There were plans to make the cache manager pages in a yaml format to allow programs to work with instead of parsing the current format.
I do not know were these plans stand and I believe that an extended SNMPD commands might be pretty useful since not everything in the cache manager pages is available via the SNMP.

It will require some development time and a bit of QA but the relevant things are:
* Prometheus (json)
* SNMP
* others (yaml)

It's pretty simple to parse the current cache manager to specific degree and specific developers and to convert it to json/yaml is also pretty simple.
I remember that I have some code somewhere that does some of the heavy lifting in such a project.

I will say something like this:
Let make a DIFF and see what happens, what do you think?

Eliezer

-----Original Message-----
From: squid-users <squid-users-bounces at lists.squid-cache.org> On Behalf Of Matus UHLAR - fantomas
Sent: Friday, 17 June 2022 11:30
To: squid-users at lists.squid-cache.org
Subject: Re: [squid-users] The usage of extended SNMPD commands to monitor squid.

On 24.05.22 10:39, Eliezer Croitoru wrote:
>Since the Squid-Cache project doesn't maintain the SNMP part of it as far as
>I know I was thinking about:

Doesn't it?

I mean, some data are already avilable via SNMP.

If there are gauges and counters in squid and they are available via SNMP, 
we can expect them to be correct, am I right?

is it that they are in squid but not available via SNMP?

>Using extended SNMPD ie in /etc/snmp/snmpd.conf
>
>extend squid_x_stats /bin/bash /usr/local/bin/squid_x_stats.sh
>
>while the binary itself probably will be a single command/script that will
>have symlinks to itself with a different name (like what busybox provides
>binaries).
>
>With a set of these commands it would be possible to monitor squid via the
>linux SNMPD and the backend would be a script.
>
>To overcome a DOS from the SNMP side I can build a layer of caching in
>files.
>It would not be like the current squid SNMP tree of-course but as long the
>data is there it can be used in any system that supports it.
>
>I have used nagios/cacti/others to create graphs based on this concept.
>
>I am currently working on the PHP re-testing project and it seems that PHP
>7.4 is not exploding it's memory and crashes compared to older versions.
>
>I still need a more stressed system to test the scripts.
>
>I have created the next scripts for now:
>
>*	Fake helper
>*	Session helper based on Redis
>*	Session helper based on FS in /var/spool/squid/session_helper_fs


-- 
Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
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