Daily mail reports with logwatch

this is obsolete doc -- see http://doc.nethence.com/ instead

http://pbraun.nethence.com/doc/sysutils_linux/redhat.html

http://pbraun.nethence.com/doc/sysutils_linux/redhat_packages.html

http://pbraun.nethence.com/doc/sysutils_linux/logwatch.html

http://pbraun.nethence.com/doc/sysutils/log_rotation.html

Basic configuration

Configure logwatch,

cd /usr/share/logwatch/default.conf

mv logwatch.conf logwatch.conf.dist

sed '/^$/d; /^#/d;' logwatch.conf.dist > logwatch.conf

change/comment,

Detail = High

#Service = "-zz-network"     # Prevents execution of zz-network service

#Service = "-zz-sys"         # Prevents execution of zz-sys service

Note. we prefer to edit the defaults instead if local configs (/etc/logwatch/conf/logwatch.conf) as we couldn't comment some services on the latter.

Note. those perl modules are required to get CPU and mem info,

perl -MCPAN -e 'install Sys::CPU'

perl -MCPAN -e 'install Sys::MemInfo'

HTML output and template

Note Redhat RHEL 5.1 logwatch is broken about that. Use RHEL 5.2's logwatch package or superior.

Change logwatch reports's output to html,

vi /etc/cron.daily/0logwatch

change,

$Config{'output'} = "html";

Note. that cron is a symlink to "/usr/share/logwatch/scripts/logwatch.pl"

Edit the template,

cd /usr/share/logwatch/default.conf/html

mv header.html header.html.dist

vi header.html

like,

<html>

<head>

 <style type="text/css">

        *  { font-size:10px; font-family:Arial,Verdana }

        td { border:0 }

        h1 { font-size: 150%; margin-bottom:0; padding-bottom:0 }

        h2 { font-size:135%; margin-bottom:0; padding-bottom:0 }

        h3 { font-size:120%; margin-bottom:0; padding-bottom:0 }

 </style>

</head>

<body>

<!-- End header.html -->

note. no espaces in from of doublequotes here, despide the default html code

note. we don't need title no h1, the hostname will appear in message's subjet anyway

and,

mv footer.html footer.html.dist

vi footer.html

like,

<!-- Start footer.html -->

</body>

</html>

You'll also want to fix table borders,

vi /etc/cron.daily/0logwatch

change this line,

<table border=\"1\">\n";

to,

<table>\n";