Install to CentOS (optional) — How to install milter manager related softwares to CentOS
About this document
milter-manager-log-analyzer is already installed because it is included in milter manager's RPM package. We will configure Web server to browse graphs generated by milter-manager-log-analyzer.
There are two ways to view generated graphs; (1) view them via a Web server at the same host and (2) view them via Munin (and a Web server) at other host. If we already have Munin or exclusive system monitoring server, Munin is a better way. Otherwise, a Web server at the same host is a better way. 
First, a way that a Web server in the same host will be explained, then a way that using Munin will be explained.
Way 1: View via a Web server at the same host
We use Apache as Web server.
% sudo yum install -y httpd % sudo /sbin/chkconfig httpd on
milter-manager-log-analyzer generates graphs to milter-manager user's home directory. (/var/lib/milter-manager/) We configure Web server to publish them at http://localhost/milter-manager-log/.
We put /etc/httpd/conf.d/milter-manager-log.conf with the following content:
Alias /milter-manager-log/ /var/lib/milter-manager/public_html/log/
We need to reload configuration after editing:
% sudo /sbin/service httpd reload
Now, we can see graphs at http://localhost/milter-manager-log/.
We install milter-manager-munin-plugins package that provides statistics data collected by milter-manager-log-analyzer to Munin:
% sudo yum install -y milter-manager-munin-plugins
NOTE: We need to use databases created by milter-manager-log-analyzer bundled with milter manager 1.5.0 or later to provide statistics data to Munin. If we have databases that are created by older milter-manager-log-analyzer, we need to remove ~milter-manager/public_html/log/. If we remove the directory, milter-manager-log-analyzer re-creates statistics databases 5 minutes later.
Munin-node should accept accesses from Munin server. If Munin server is 192.168.1.254, we need to append the following lines to /etc/munin/munin-node.conf:
We need to restart munin-node to apply our configuration:
% sudo /sbin/service munin-node restart
Configure Munin server
Works in this section at system monitor server. We assume that system monitor server works on CentOS.
First, we install munin and Apache:
monitoring-server% sudo yum install -y munin httpd
We add our mail server that works munin-node to munin's monitor target. We assume that mail server has the following configuration:
We need to add the following lines to /etc/munin/munin.conf to add the mail server:
[mail.example.com] address 192.168.1.2 use_node_name yes
We will be able to view graphs at http://monitoring-server/munin/ 5 minutes later.
We can confirm milter's effect visually by milter-manager-log-analyzer. If we use Postfix as MTA, we can compare with Mailgraph 's graphs to confirm milter's effect. We can use graphs generated by milter-manager-log-analyzer effectively when we are trying out a milter.
 If we want to run Munin at the same host, we need a Web server.