In mods-enabled I have status.conf which contains:

<IfModule mod_status.c>
ExtendedStatus On
<Location /server-status>
SetHandler server-status
Order deny,allow
Deny from all
Allow from localhost ip6-localhost
Allow from .aionelysium.com
</Location>

BUT it doesn't seem to to be working. Am I missing something?

</IfModule>

Found this from http://ubuntuforums.org/showthread.php?t=1044117

By default the Apache Munin plugins will try to connect to http://127.0.0.1:80. In my case I only have Apache listening on the external IP, and as I wanted to keep that Apache config, I've added this to my Munin config:

[apache*]
env.url http://my.domain-name.com/server-status?auto
env.ports 80 443

Tried the above, but I still get "no apache server-status on ports 80" when attempting to enable the apache plugins.

This does not correspond to my experience. One Linode 360 I manage runs Ubuntu 8.04 and Apache 2.2.8 just fine with MaxClients set to 50 (and hits that max several times a week). It uses PunBB, which is lightweight compared to, say, Drupal or Wordpress.

Another running CentOS 5.3 and Apache 2.2.3 uses MediaWiki and can only handle a MaxClients of 25 before hitting swap. For whatever reason, Apache seems less memory-efficient on CentOS than on Ubuntu, but this server also runs mailing lists and other services that consume RAM.

You can have apache listen on both IPs. Have apache itself listen on localhost, and have your vhost listen on the external IP.

_________________
If it ain't broke, you didn't tweak it enough. If it is broke, use more duct tape.
http://independentchaos.com

I'm having the same issues with my linode server running drupal on apache. Were you able to solve the problem? I'm getting spikes about once a day and it's usually in the middle of the night when there is almost no traffic on the site.
Thanks, Tim