• GitBucket: GitHub clone for your intranet

    calendar Nov 1, 2014 · 2 min read  ·
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    GitHub is a very comfortable portal to collaborate source coces. The service manages versions using Git - for documentation purposes bugs and wiki contents can be provided. Especially the open-source scene uses the service a lot but for internal, non-public developments it is only partially suitable.

    Premium users are …


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  • Install EMC NetWorker agent in VMware vCenter Server Appliance 5.5

    calendar Oct 21, 2014 · 4 min read · vcsa  ·
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    When running a virtualized vCenter server it is very important to have a working backup. If the vCenter server crashes the virtual landscape cannot be managed or monitored.

    Configuring backup is very easy when running VMware vCenter Server on a conventional Microsoft Windows servers because it is a fully-features …


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  • POODLE - and how to get rid of it

    calendar Oct 16, 2014 · 2 min read  ·
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    A couple of days ago another security vulnerability that applies to Linux systems called PODDLE was announced. Less serious than Heartbleed especially web servers that are still allowing SSL generations 2 and 3 are affected. Because of a bad security design it is possible to decrypt transfered data. Often those …
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  • Virtualized cluster storage using VMware ESXi

    calendar Oct 12, 2014 · 3 min read · esxi  ·
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    Many software cluster solutions require shared storage between all cluster nodes. A very prominent example for this might be Oracle RAC (Real Application Clusters). In enterprise environments shared cluster storage is often implemented using SAN storage that is connected to multiple systems.

    For (private) test …


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  • Short tip: configure hard drive standby with systemd

    calendar Oct 11, 2014 · 1 min read · kurztipp  ·
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    Hard drives can be forced into hibernate using hdparm. While it was quite easy to implement automatic setting this hibernation values by inserting the appropriate command (hdparm -B intervall device) into /etc/rc.local (which was executed after the boot) on sysvinit-based Linux distributions this changed on newer …
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  • Short tip: Get Raspberry Pi temperature

    calendar Jul 27, 2014 · 1 min read · raspberry-pi kurztipp  ·
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    There is no standard sensor that can be used with lm_sensors to get the temperature of the Raspberry Pi embedded board - what a pity! Fortunately for this function there is a dedicated command called vcgencmd which is already included in the Raspbian image. To make it work you will need to customize the LD library …
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  • Monkey web server + PHP5 + SQLite on Raspbian

    calendar May 15, 2014 · 2 min read · debian raspberry-pi  ·
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    Using Raspbian it is possible to convert a Raspberry Pi into a full-featured Webserver with PHP support. Using SQLite the embedded web server is also capable of serving database-driven web applications.

    First of all the official Monkey APT repository needs to be included - this can done very easily by addind a line …


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  • Migrating vCenter Server Appliance data partitions to LVM volumes

    calendar Mar 21, 2014 · 7 min read · lvm vcsa  ·
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    Recently I discovered the following hint in the vCenter service state overview:

    <img
  loading="lazy"
  decoding="async"
  alt="Ldap backup task monitor warning"
  
    class="image_figure image_internal image_unprocessed" …</picture></figure></p>

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  • Short tip: Find WWN/WWID for Fibre-channel controller under Linux

    calendar Mar 5, 2014 · 2 min read · kurztipp  ·
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    To find out the World Wide Name / World Wide Identifier of a Fibre channel controller under Linux you actually have multiple possibilities.

    A very common way is to read the /sys directory. In this virtual file system there are e.g. special files which contain further information about the hardware. Below the folder …


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  • Patch Linux kernel source code

    calendar Feb 25, 2014 · 8 min read  ·
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    Sometimes it is necessary to patch the Linux source code - e.g. after new drivers or security bugfixes have been applied.

    As a rule this task is done by your chosen distributor - but maybe you don't want to wait for that (or you like doing this on your own).

    I'm currently preparing myself for the LPIC-2 certification - …


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