• Short tip: Changed Owncloud CardDAV/CalDAV URLs

    calendar Apr 26, 2016 · 1 min read · kurztipp  ·
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    Recently I had issues with configuring CardDAV-Sync and CalDAV-Sync along with Owncloud after a fresh Android installation. Specifying the well-known URLs just produced several error messages inside the app:

    https://my-server.tld/owncloud/remote.php/caldav/principals/USER/ …


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  • IPFire hardware upgrade

    calendar Mar 20, 2016 · 5 min read · ipfire  ·
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    2016 seems to be the year of hardware upgrades for me. After replacing my ESXi host with a VSAN cluster recently, I also had to replace the D.I.Y. router after upgrading my internet connection. At maximum data throughput, CPU load and temperatur are increasing so heavily that other network traffic is slowing down …
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  • Restore the MBR of a Linux installation

    calendar Mar 17, 2016 · 3 min read  ·
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    As preparation for a restore test, I removed the master boot record (MBR) of a Linux system recently:

    1# dd if=/dev/zero of=/dev/sda bs=512 count=1

    This command fills the first 512 bytes (containing the partition table and bootloader) of the first hard drive (/dev/sda) with zeroes (/dev/zero).

    The problem is when you …


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  • Configure LACP under CentOS along with Cisco

    calendar Mar 16, 2016 · 4 min read · cisco  ·
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    <img
  loading="lazy"
  decoding="async"
  alt="LACP setup"
  
    class="image_figure image_internal image_unprocessed"
    src="https://cstan.io/images/2016/03/LAG_Setup.jpg"
  
  
/>

</picture>

    If a host has …


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  • Short tip: Reset Linux password unattended

    calendar Feb 16, 2016 · 1 min read · kurztipp  ·
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    Sometimes it happens that you lock out yourself from your Linux system. In the worst case, additional security concepts or conditions might hamper access to the system, for example:

    • No root access
    • System cannot be rebooted to reset the password in a chroot session
    • No colleague with system access available

    Recently I …


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  • Analyze and clean-up installed RPM packages with package-cleanup

    calendar Feb 12, 2016 · 2 min read  ·
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    During the installation of kernel updates I stumbled upon a cramped /boot partition recently. Solving this issue is quite easy - e.g. it is possible to manually dig through the RPM database, exclude the running kernel and remove all other packages. Anyhow, this is neither comfortable nor elegant:

    1# yum remove `rpm …

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  • IPFire and the AX206 display

    calendar Jan 24, 2016 · 4 min read · ipfire  ·
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    Thanks to the lcd4linux project, Linux also offers the possibility to control LC display - e.g. to display status information. Some years ago, a very cheap digital picture frame was sold on mail-order houses like Pearl. Using an alternative firmware, this device is also capable of being controlled by lcd4linux. Since …
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  • Migrating from IPCop to IPFire

    calendar Jan 19, 2016 · 5 min read · ipcop ipfire  ·
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    Since 2008 I have been using the free Linux distribution IPCop to implement a customized firewall/a router. Of course, DSL providers also equip their customers with routers, but back then I was missing a couple of functions. To name some of them:

    • IPSec / OpenVPN
    • NTP time server
    • DMZ segmentation
    • WLAN access point with …

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  • GitLab Continuous Integration

    calendar Dec 11, 2015 · 7 min read · gitlab  ·
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    With the new major version 8, GitLab was extended to include a continuous integration (CI) component that was developed as dedicated project until now. While it was necessary to utilize external solutions, such as Jenkins, previously, it it now possible to automatically compile and test managed projects easily.

    But, …


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  • Spacewalk 2.4 released

    calendar Oct 10, 2015 · 3 min read · red-hat-satellite spacewalk suse-manager  ·
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    This week Spacewalk was released in version 2.4 after 6 months of development. In summary, about 60 bugs were fixed and some new features were implemented.

    The web-interface is now available to other projects as part of the Patternfly framework. The project driven mainly by Red Hat aims at combining beatiful designs …


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