Re: net-mgmt/net-snmp needs JAIL : off to get Memory usage

On Thu, Dec 28, 2023, at 11:28 AM, Dan Langille wrote:
> Hello,
>
> I've just solved a long-puzzling issue with net-mgmt/net-snmp which was 
> not reporting Memory Usage on my hosts.
>
> Tests show it is related to the JAIL build-time configuration option.
>
>   JAIL=off: Options for running snmpd within a jail(8)
>
> If off, the default, Memory Usage is available via snmpd.
>
> If on, it is not.
>
> One might ask: why have it on if not running in a jail?
>
> Simplicity: I build my own packages. I could have one repo specifically 
> for hosts (i.e. non-jails), but until now, it's never been an issue.
>
> However, I want to point that that JAIL=off does not seem to affect 
> usage within a jail.
>
> It becomes clear what JAIL does when looking at the Makefile:
>
> if ${PORT_OPTIONS:MJAIL}
> NET_SNMP_WITHOUT_MIB_MODULE_LIST+=      host
> NET_SNMP_WITHOUT_MIB_MODULE_LIST+=      ucd-snmp/memory
> CONFIGURE_ARGS+=                        --without-kmem-usage
> endif
>
> Not it's clear.  Don't report host-like objects when within a jail.
>
> It is time for some flavors on this port?  I know I'd like one for my 
> use: one without the above and with.
>
> I'll see if I can mangle something up which works.

This works for me.

-- 
  Dan Langille
  dan@langille.org