Entries Tagged with ‘code snippet’

Today I noticed that it might be useful to backup some folders on one of my VMs from time to time. At first I thought about creating a new cron job, but then I noticed that Cfengine 3 is running on that VM. So – why not letting Cfengine 3 do all the work? Writing […]

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During this blog post, I will show you how to edit the sshd_config file and restart sshd if necessary. For the sake of completeness and since this blog post is part of the comparison series “Cfengine 3 vs. Puppet”, I want to point you to the Cfengine 3 code snippet which does exactly the same. […]

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As you might be aware of, I am directly comparing all my previously 18 written Cfengine 3 code snippets with Puppet 2.x/3.x. This time a Puppet manifest will run a very simple shell command, similar to the Cfengine 3 version. Writing the Puppet manifest for running a shell command exec { "start_mysql": command => "/etc/init.d/mysql […]

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For this part of my comparison series “Cfengine 3 vs. Puppet” I upgraded my Linux Mint 12 to 13 and switched to Puppet 3.0.2. If you download and try my little code snippets I recommend to use at least Puppet 2.7.14 since this version is able to run the official apt module from Puppetlabs. While […]

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Welcome to the next part of my little blog entry series about comparing Cfengine 3 with Puppet. In this issue, we will write a Puppet manifest for mounting a NFS share. You can compare it directly to the Cfengine 3 code snippet if you click here. Writing the Puppet code snippet for mounting a NFS […]

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Part three of my little blog series “Cfengine 3 vs Puppet” shows several ways of how new packages can be installed with Puppet. Writing the Puppet manifest for installing new packages # There are multiple possibilities here, 3 of them are shown here # Possibility #1 # package { "slapd": ensure => "installed" } # […]

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Welcome to part two of my series of blog entries about comparing Cfengine 3 to Puppet. The goal is to write little task-orientated snippets for both configuration management tools and compare the results each time. The goal is to find out which piece of software is easiest to learn and use. Today we are re-writing […]

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As you might already know I am a huge fan of Cfengine (2/3). But I do realize that there are also other configuration management systems, such as Puppet or Chef and they might have their advantages over Cfengine 3. I have published a few Cfengine 3 snippets and am planning to re-write those snippets in […]

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Recently, I had to use Ntop to analyze the network traffic of one customer file server. Ntop shows the traffic per interface and there per protocol, source IP and offers many other ways of showing you what happens in your network. Ntop is great; however, I observed this tool taking many system resources since it […]

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One of the most common tasks of a Linux sysadmin (or DevOp) might be setting file permissions and ownerships. In this blog I’ll show you how you can do that in a very simple but effective way with Cfengine 3. Writing the Cfengine 3 code for setting file permissions and ownerships body common control { […]

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