I’ve recently updated my LXC role for ansible. You can get it like that: ansible-galaxy install deimosfr.lxc Here is the change log: + Adding new parameters for dnsmasq and interfaces + Adding new prequesite to avoid unwanted modules to load in the latest kernel versions = Corrected networking configuration issue = Templates do not create @LOCALSTATEDIR@ folder anymore It works perfectly on my new Dedibox :-)

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I’ve heard of Docker a year ago, started to play with it for some months and really start using it a few days ago. At first, I thought it was more complex than expected and finally I saw how simple it is and how many time I’ve lost because I didn’t used it. Docker is an open-source engine that automates the deployment of any application as a lightweight, portable, self-sufficient container that will run virtually anywhere.

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Last week, have been faced on a big sniffing issue on my wiki. The guy wanted to download all my wiki content. In reality I do not really care as it is open, free for read and contribution is welcome. However, the current VM where the blog and wiki are running didn’t support aggressive sniffing that this guy made. That’s why CPUs were at 100% of usage because of PHP requests, PHP-FPM was overloaded (reached my configuration limits).

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Next Tuesday, an OpenZFS conference will take place in Paris. I would like to assist as I’m a ZFS fan, however I couldn’t so easily. I didn’t really follow OpenZFS and hope we could see videos when the event will be finished. If you don’t really know about ZFS and can have the chance to assist, I strongly recommend it to you. To get more informations on the event, follow the link.

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I started to play with Ansible a little bit more than a week ago and I really enjoy it compared to Puppet. I still do not have all my reflex that I can have on Puppet, however what I can say is how easy it is to start making complicated things on Ansible! I started to rewrite my Puppet manifests to Ansible playbooks and what I can say is it’s really fast and easy.

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Regarding one of my latest post, talking about Fluentd, some of you asked me why I’ve chosen Fluentd instead of Logstash. First of all, I’ve looked at this blog post, which kindly resume the current situation. Looking at this and with feedback I got, I could establish this array: <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; background-color: #c9daf8; font-weight: bold; text-align: center;" data-sheets-value="[null,2,&quot;Logstash&quot;]"> Logstash </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; background-color: #c9daf8; font-weight: bold; text-align: center;" data-sheets-value="[null,2,&quot;Fluentd&quot;]"> Fluentd </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; text-align: center;" data-sheets-value="[null,2,&quot;Flexibility/Interoperability&quot;]"> Flexibility/Interoperability </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; text-align: center;" data-sheets-value="[null,2,&quot;Simplicity/Robustness&quot;]"> Simplicity/Robustness </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; text-align: center;" data-sheets-value="[null,2,&quot;JRuby&quot;]"> JRuby </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; text-align: center;" data-sheets-value="[null,2,&quot;Cruby&quot;]"> Cruby </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; background-color: #d9ead3; text-align: center;" data-sheets-value="[null,2,&quot;More&quot;]"> More </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; background-color: #f4cccc; text-align: center;" data-sheets-value="[null,2,&quot;Fewer&quot;]"> Fewer </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; background-color: #f4cccc; text-align: center;" data-sheets-value="[null,2,&quot;Basics&quot;]"> Basics </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; background-color: #d9ead3; text-align: center;" data-sheets-value="[null,2,&quot;Scalables&quot;]"> Scalables </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; background-color: #f4cccc; text-align: center;" data-sheets-value="[null,2,&quot;Lot&quot;]"> Lot </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; background-color: #d9ead3; text-align: center;" data-sheets-value="[null,2,&quot;Lot more&quot;]"> Lot more </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; background-color: #d9ead3; text-align: center;" data-sheets-value="[null,2,&quot;Simple (drop a jar)&quot;]"> Simple (drop a jar) </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; background-color: #fff2cc; text-align: center;" data-sheets-value="[null,2,&quot;Can be complex (dependancies)&quot;]"> Can be complex (dependencies) </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; background-color: #d9ead3; text-align: center;" data-sheets-value="[null,2,&quot;Yes&quot;]"> Yes </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; background-color: #d9ead3; text-align: center;" data-sheets-value="[null,2,&quot;Yes&quot;]"> Yes </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; background-color: #f4cccc; text-align: center;" data-sheets-value="[null,2,&quot;Forward to 2 hosts&quot;]"> Forward to 2 hosts </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; background-color: #d9ead3; text-align: center;" data-sheets-value="[null,2,&quot;LB A/A or A/P&quot;]"> LB A/A or A/P </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; background-color: #f4cccc; text-align: center;" data-sheets-value="[null,2,&quot;Can loss messages&quot;]"> Can loss messages </td> <td style="padding: 2px 3px 2px 3px; vertical-align: bottom; background-color: #d9ead3; text-align: center;" data-sheets-value="[null,2,&quot;No message loss&quot;]"> No message loss </td> Logstash and Fluentd are both powerful solutions, they both got pros and cons.

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Managing logs is not a complicated tasks with classical syslog systems (syslog-ng, rsyslog…). However, being able to search in them quickly when you have several gigabit of logs, with scalability, with a nice graphical interface etc…is not the same thing. Hopefully today, tools that permit to do it very well exists, here are the list of tools that’s we’re going to use to achieve it: Elasticsearch: Elasticsearch is a flexible and powerful open source, distributed, real-time search and analytics engine.

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