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| author | Michael Biebl <biebl@debian.org> | 2008-03-29 12:14:24 +0100 |
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| committer | Michael Biebl <biebl@debian.org> | 2008-03-29 12:14:24 +0100 |
| commit | ea79ad8dae160f0d0966b5a02fa3b73f0c3d1940 (patch) | |
| tree | 564de6e12a302f99754c7c8490b6dccd1292e70f /doc/install.html | |
| download | rsyslog-ea79ad8dae160f0d0966b5a02fa3b73f0c3d1940.tar.gz | |
Imported Upstream version 1.18.2upstream/1.18.2
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| -rw-r--r-- | doc/install.html | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/doc/install.html b/doc/install.html new file mode 100644 index 0000000..fb9e893 --- /dev/null +++ b/doc/install.html @@ -0,0 +1,156 @@ +<html><head> +<title>SSL Encrypting syslog with stunnel</title> +<meta name="KEYWORDS" content="syslog encryption, rsyslog, stunnel, secure syslog, tcp, reliable, howto, ssl"> +</head> +<body> +<h1>HOWTO install rsyslog</h1> + <P><small><i>Written by + <a href="http://www.adiscon.com/en/people/rainer-gerhards.php">Rainer + Gerhards</a></i></small></P> +<h2>Abstract</h2> +<p><i><b>In this paper, I describe how to install +<a href="http://www.rsyslog.com/">rsyslog</a>.</b> It is intentionally a brief +step-by-step guide, targeted to those who want to quickly get it up and running. +For more elaborate information, please consult the rest of the +<a href="manual.html">manual set</a>.</i></p> +<h2>How to make your life easier...</h2> +<p>Some folks have thankfully created <a href="rsyslog_packages.html"> +RPMs/packages for rsyslog</a>. If you use them, you can spare yourself many of +the steps below. This is highly recommended if there is a package for your +distribution available.</p> +<h2>Steps To Do</h2> +<p>Rsyslog does currently only have very limited availability as a package (if +you volunteer to create one, <a href="mailto:rgerhards@adiscon.com">drop me a +line</a>). Thus, this guide focuses on installing from the source, which +thankfully is <b>quite easy</b>.</p> +<h3>Step 1 - Download Software</h3> +<p>For obvious reasons, you need to download rsyslog. Load the most recent build +from <a href="http://www.rsyslog.com/downloads">http://www.rsyslog.com/downloads</a>. +Extract the software with "tar xzf -nameOfDownloadSet-". This will create a new +subdirectory rsyslog-version in the current working directory. CD into that. </p> +<p>Depending on your system configuration, you also need to install some build +tools, most importantly make, the gcc compiler and the MySQL development system +(if you intend to use MySQL - the package is often named "mysql-dev"). On many systems, these things should already be +present. If you don't know exactly, simply skip this step for now and see if +nice error messages pop up during the compile process. If they do, you can still +install the missing build environment tools. So this is nothing that you need to +look at very carefully.</p> +<h3>Step 2 - Run ./configure</h3> +<p>Run ./configure to adopt rsyslog to your environment. While doing so, you can +also enable options. Configure will display selected options when it is +finished. For example, to enable MySQL support, run</p> +<p>./configure --enable-mysql</p> +<p>Please note that MySQL support by default is NOT disabled.</p> +<h3>Step 3 - Compile</h3> +<p>That is easy. Just type "make" and let the compiler work. On any recent +system, that should be a very quick task, on many systems just a matter of a few +seconds. If an error message comes up, most probably a part of your build +environment is not installed. Check with step 1 in those cases. </p> +<h3>Step 4 - Install</h3> +<p>Again, that is quite easy. All it takes is a "make install". That will copy +the rsyslogd and the man pages to the relavant directories.</p> +<h3>Step 5 - Configure rsyslogd</h3> +<p>In this step, you tell rsyslogd what to do with received messages. If you are +upgrading from stock syslogd, /etc/syslog.conf is probably a good starting +point. Rsyslogd understands stock syslogd syntax, so you can simply copy over +/etc/syslog.conf to /etc/rsyslog.conf. Then, edit rsyslog.conf for any +enhancements you would like to see. For example, you can add database writing as +outlined in the paper "<a href="rsyslog_mysql.html">Writing syslog Data to MySQL</a>" +(remember you need to enable MySQL support during step 2 if you want to do +that!).</p> +<h3>Step 6 - Disable stock syslogd</h3> +<p>In almost all cases, there already is stock syslogd installed. Because both +it and rsyslogd listen to the same sockets, they can NOT be run concurrently. So +you need to disable the stock syslogd. To do this, you typically must change +your rc.d startup scripts.</p> +<p>For example, under <a href="http://www.debian.org/">Debian</a> this must be +done as follows: The default runlevel is 2. We modify the init scripts for +runlevel 2 - in parctice, you need to do this for all run levels you will ever +use (which probably means all). Under /etc/rc2.d there is a S10sysklogd script (actually +a symlink). Change the name to _S10sysklogd (this keeps the symlink in place, +but will prevent further execution - effectively disabling it).</p> +<h3>Step 7 - Enable rsyslogd Autostart</h3> +<p>This step is very close to step 3. Now, we want to enable rsyslogd to start +automatically. The rsyslog package contains a (currently small) number of +startup scripts. They are inside the distro-specific directory (e.g. debian). If +there is nothing for your operating system, you can simply copy the stock +syslogd startup script and make the minor modifications to run rsyslogd (the +samples should be of help if you intend to do this).</p> +<p>In our Debian example, the actual scripts are stored in /etc/init.d. Copy the +standard script to that location. Then, you need to add a symlink to it in the +respective rc.d directory. In our sample, we modify rc2.d, and can do this via +the command "ln -s ../init.d/rsyslogd S10rsyslogd". Please note that the S10 +prefix tells the system to start rsyslogd at the same time stock sysklogd was +started.</p> +<p><b>Important:</b> if you use the database functionality, you should make sure +that MySQL starts before rsyslogd. If it starts later, you will receive an error +message during each restart (this might be acceptable to you). To do so, either +move MySQL's start order before rsyslogd or rsyslogd's after MySQL.</p> +<h3>Step 8 - Check daily cron scripts</h3> +<p>Most distributions come pre-configured with some daily scripts for log +rotation. As long as you use the same log file names, the log rotation scripts +will probably work quite well. There is one caveat, though. The scripts need to +tell syslogd that the files have been rotated. To do this, they typically have a +part using syslogd's init script to do that. Obviously, the default scripts do +not know about rsyslogd, so they manipulate syslogd. If that happens, in most +cases an additional instance of stock syslogd is started (in almost all cases, +this was not functional, but it is at least distracting). It also means that +rsyslogd is not properly told about the log rotation, which will lead it to +continue to write to the now-rotated files.</p> +<p>So you need to fix these scripts. See your distro-specific documentation how +they are located. Under most Linuxes, the primary script to modify is /etc/cron.daily/sysklogd. +Watch for a comment "Restart syslogd" (usually at the very end of the file). The +restart command must be changed to use rsyslogd's rc script.</p> +<p>Also, if you use klogd together with rsyslogd (under most Linuxes you will do +that), you need to make sure that klogd is restarted after rsyslogd is restarted. +So it might be a good idea to put a klogd reload-or-restart command right after +the rsyslogd command in your daily script. This can save you lots of troubles.</p> +<h3>Done</h3> +<p>This concludes the steps neccesary to install rsyslogd. Of course, it is +always a good idea to test everything thouroughly. At a minimalist level, you +should do a reboot and after that check if everything has come up correctly. Pay +attention not only to running processes, but also check if the log files (or the +database) are correctly being populated.</p> +<p>If rsyslogd encounters any serious errors during startup, you should be able +to see them at least on the system console. They might not be in log file, as +errors might occur before the log file rules are in place. So it is always a +good idea to check system console output when things don't go smooth. In some +rare cases, enabling debug logging (-d option) in rsyslogd can be helpful. If +all fails, go to <a href="http://www.rsyslog.com">www.rsyslog.com</a> and check +the forum or mailing list for help with your issue.</p> +<h2>Housekeeping stuff</h2> +<p>This section and its subsections contain all these nice things that you +usually need to read only if you are really curios ;)</p> +<h3>Feedback requested</h3> +<P>I would appreciate feedback on this tutorial. It is still in its infancy, so additional ideas, +comments or bug sighting reports are very welcome. Please +<a href="mailto:rgerhards@adiscon.com">let me know</a> about them.</P> +<h3>Revision History</h3> +<ul> + <li>2005-08-08 * + <a href="http://www.adiscon.com/en/people/rainer-gerhards.php">Rainer Gerhards</a> * Initial + version created</li> + <li>2005-08-09 * + <a href="http://www.adiscon.com/en/people/rainer-gerhards.php">Rainer Gerhards</a> + * updated to include distro-specific directories, which are now mandatory</li> + <li>2005-09-06 * + <a href="http://www.adiscon.com/en/people/rainer-gerhards.php">Rainer Gerhards</a> + * added information on log rotation scripts</li> + <li>2007-07-13 * + <a href="http://www.adiscon.com/en/people/rainer-gerhards.php">Rainer Gerhards</a> + * updated to new autotools-based build system</li> +</ul> +<h3>Copyright</h3> +<p>Copyright (c) 2005, 2007 +<a href="http://www.adiscon.com/en/people/rainer-gerhards.php">Rainer Gerhards</a> and +<a href="http://www.adiscon.com/en/">Adiscon</a>.</p> +<p> Permission is granted to copy, distribute and/or modify this document + under the terms of the GNU Free Documentation License, Version 1.2 + or any later version published by the Free Software Foundation; + with no Invariant Sections, no Front-Cover Texts, and no Back-Cover + Texts. A copy of the license can be viewed at +<a href="http://www.gnu.org/copyleft/fdl.html"> +http://www.gnu.org/copyleft/fdl.html</a>.</p> + +</body> +</html>
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