Managing the network with Cfengine
Conclusion
Now that your Cfengine framework is configured, here are a few ideas for continued improvements:
- Centralize periodically executed jobs
- Integrate the monitoring and deployment systems by having cf-agent automatically configure monitors
- Integrate your backup system with your deployment system
- Make sure all of your nodes are configured to log centrally
The more functionality you bring within Cfengine's realm, the easier it will be to bring new services online and to recover from problems such as hardware failures or security compromises. Because you can code all the rules on how to create a node of type X in a machine-executable language, all you need to do is prepare a fresh base OS install, then install Cfengine and let it rebuild your replacement node for you.
Infos
- Cfengine: http://www.cfengine.org
- Cfengine source code: http://www.cfengine.org/downloads/
- Apache tarball: http://httpd.apache.org/download.cgi
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reply to pghpete
Can't believe the trouble...
'yum install openssl openssl-devel db4 db4-deve flex flex-devel bison bison-devel pcre pcre-devel'
Then your './configure && make && make install' should run without issues on either distro.
Many issues while trying to follow your article
I decided to use a package utility instead of compiling the source.
RHEL 5.4:
'yum install cfengine' worked without incident
CentOS 5.4
'yum install cfengine' reports package not found, nothing to do.
I thought this was quite strange since CentOS, from my knowledge, is near identical to RHEL 5.4 ( including their repository content)
Apparently, you have to install rpmforge just to get the package for CentOS 5.4. Here is what I did to accomplish that...
'wget http://packages.sw.be/rpmfo...elease-0.5.1-1.e15.rf.i386.rpm'
'rpm -Uvh rpmforge-release-0.5.1-1.e15.rf.i386.rpm'
(as rpmrepo.net/RPMforge instructs)
After that a 'yum install cfengine' worked without incident. At this point I figured my troubles where over,... nope!
While trying to follow your "Hello, World" instructions, I couldn't figure out why there was no command cf-key, or cf-agent on my systems... a quick 'man cfengine' showed me why... ah... it's cfkey and cfagent. I figured it was just the authors typo(s). Then, the files and directories that I was directed to create/alter were not on my systems either. Hum... strange. I was about to give up but then I ran 'rpm -q cfengine' on both systems and had my "Ah ha" moment... both of my test distros are Enterprise OS systems and therefore, their package versions are way behind the most recent versions of anything. I totally missed the first sentence of paragraph two in which Mr. Strejcek states clearly, "To show what is possible with Cfengine 3,..."
I can't believe I missed that! I had ton of problems, but they were all self-inflicted wounds. Had I just caught that line... aw well.