## Install to FreeBSD (optional) Install to FreeBSD (optional) — How to install milter manager related softwares to FreeBSD |

## About this document

This document describes how to install milter manager related softwares to FreeBSD. See Install to FreeBSD for milter manager install information and Install for general install information.

## Install milter-manager-log-analyzer

milter-manager-log-analyzer analyzer milter manager's log and generates graphs for statistics information.

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. [6]

We install milter-manager-log-analyzer and then configure an environment to view generated graphs.

### Install packages

We use RRDtool for generating graphs. We also install Ruby bindings to RRDtool.

NOTE: The Ruby bindings in RRDtool 1.3.8 has a bug. Don't specify "-M'WITH_RUBY_MODULE=yes'" when you use 1.3.8.

    % sudo /usr/local/sbin/portupgrade -NRr -m 'WITH_RUBY_MODULE=true' databases/rrdtool

### Configure milter-manager-log-analyzer

milter-manager-log-analyzer analyzes log and generates graphs periodically by cron. There is a cron configuration file at /usr/local/etc/milter-manager/cron.d/freebsd/milter-manager-log. milter-manager-log-analyzer analyzes log each 5 minutes and generates graphs into ~milter-manager/public_html/log/ by using the file.

    % sudo -u milter-manager -H crontab /usr/local/etc/milter-manager/cron.d/freebsd/milter-manager-log

We can confirm that milter-manager-log-analyzer is ran each 5 minutes at /var/log/cron.

We complete milter-manager-log-analyzer installation. We will setup an environment to view generated graphs. 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

#### Install packages

We use Apache as Web server. We will install Apache 2.2 series. (www/apache22)

    % sudo /usr/local/sbin/portupgrade -NRr www/apache22

#### Configure Apache

Apache publishes users' files. We edit /usr/local/etc/apache22/httpd.conf like the following:

Before:

    # User home directories
    #Include etc/apache22/extra/httpd-userdir.conf

After:

    # User home directories
    Include etc/apache22/extra/httpd-userdir.conf

Then we reload configuration file:

    % sudo /usr/local/etc/rc.d/apache22 reload

Now, we can see graphs at http://localhost/milter-manager-log/.

### Way 2: View via Munin at other host

Next way is using Munin at other host.

#### Install packages

We install milter-manager-munin-plugins package that provides statistics data collected by milter-manager-log-analyzer to Munin:

    % sudo /usr/local/sbin/portupgrade -NRr munin-node

#### Configure munin-node

We will install Munin plugins to provide statistics information collected by milter-manager-log-analyzer to Munin. Those plugins are installed into /usr/local/share/munin/plugins/. First, we install them to munin-node's plugins directory:

    % sudo ln -s /usr/local/share/milter-manager/munin/plugins/* /usr/local/share/munin/plugins

Next, we put a configuration for those plugins to /usr/local/etc/munin/plugin-conf.d/milter-manager.conf:

/usr/local/etc/munin/plugin-conf.d/milter-manager.conf:

    [milter_manager_*]
      user milter-manager
      env.PATH /bin:/usr/local/bin:/usr/bin
      env.logdir /home/milter-manager/public_html/log
      env.pidfile /var/run/milter-manager/milter-manager.pid

At the last, we enables only plugins what we need:

    % sudo /usr/local/sbin/munin-node-configure --shell | grep -e '\(milter_manager_\|postfix_processes\|sendmail_processes\)' | sudo sh

Plugins installation is completed.

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:

/etc/munin/munin-node.conf:

    allow ^192\.168\.1\.254$

We need to restart munin-node to apply our configuration:

    % sudo /usr/sbin/service munin-node restart

#### Configure Munin server

Works in this section at system monitor server. We assume that system monitor server works on FreeBSD.

First, we install munin and Apache:

    monitoring-server% sudo /usr/local/sbin/portupgrade -NRr munin-main www/apache22

We add our mail server that works munin-node to munin's monitor target. We assume that mail server has the following configuration:

Host name | mail.example.com
IP address | 192.168.1.2

We need to add the following lines to /usr/local/etc/munin/munin.conf to add the mail server:

/usr/local/etc/munin/munin.conf:

    [mail.example.com]
        address 192.168.1.2
        use_node_name yes

We export graphs generated by munin:

    % sudo ln -s /usr/local/www/munin/ /usr/local/www/apache22/data/

We will be able to view graphs at http://monitoring-server/munin/ 5 minutes later.

## Install milter manager admin

### Install packages

To install the following packages, related packages are also installed:

    % sudo /usr/local/sbin/portupgrade -NRr rubygem-sqlite3 ruby-iconv

### Instal gems

    % sudo gem install rack -v '1.1.3'
    % sudo gem install rails -v '2.3.14'
    % sudo gem install passenger -v '2.2.15'

### Install Passenger

To build Passenger we run the following command:

    % (echo 1; echo) | sudo passenger-install-apache2-module

Then we create /usr/local/etc/apache22/Includes/passenger.conf with the following content:

    LoadModule passenger_module /usr/local/lib/ruby/gems/1.8/gems/passenger-2.2.15/ext/apache2/mod_passenger.so
    PassengerRoot /usr/local/lib/ruby/gems/1.8/gems/passenger-2.2.15
    PassengerRuby /usr/local/bin/ruby18

    RailsBaseURI /milter-manager

We reload configuration file:

    % sudo /usr/local/etc/rc.d/apache22 reload

milter manager admin has password authentication but it's better that milter manager admin accepts connections only from trusted hosts. For example, here is an example configuration that accepts connections only from localhost. We can use the configuration by appending it to /usr/local/etc/apache22/Includes/passenger.conf.

    <Location /milter-manager>
      Allow from 127.0.0.1
      Deny from ALL
    </Location>

If we append the configuration, we should not forget to reload configuration:

    % sudo /usr/local/etc/rc.d/apache22 reload

### Configure milter manager admin

milter manager admin is installed to /usr/local/share/milter-manager/admin/. We run it as milter-manager user authority, and access it at http://localhost/milter-manager/.

    % tar cf - -C /usr/local/share/milter-manager admin | sudo -u milter-manager -H tar xf - -C ~milter-manager
    % sudo ln -s ~milter-manager/admin/public /usr/local/www/apache22/data/milter-manager
    % cd ~milter-manager/admin
    % sudo -u milter-manager -H rake gems:install
    % sudo -u milter-manager -H rake RAILS_ENV=production db:migrate

Then we create a file to ~milter-manager/admin/config/initializers/relative_url_root.rb with the following content:

~milter-manager/admin/config/initializers/relative_url_root.rb

    ActionController::Base.relative_url_root = "/milter-manager"

Now, we can access to http://localhost/milter-manager/. The first work is registering a user. We will move to milter-manager connection configuration page after register a user. We can confirm where milter-manager accepts control connection:

    % sudo -u milter-manager -H /usr/local/sbin/milter-manager --show-config | grep controller.connection_spec
    controller.connection_spec = "unix:/var/run/milter-manager/milter-manager-controller.sock"

We register confirmed value by browser. In the above case, we select "unix" from "Type" at first. "Path" will be appeared. We specify "/var/run/milter-manager/milter-manager-controller.sock" to "Path".

We can confirm registered child milters and their configuration by browser.

## Conclusion

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.

We can reduce administration cost by using milter manager admin. Because we can change configurations without editing configuration file.

It's convenient that we can enable and/or disable milters by browser when we try out milters. We can use graphs generated by milter-manager-log-analyzer to find what is the best milter combination for our mail system.

[6] If we want to run Munin at the same host, we need a Web server.