Kurztipp

Short tip: Add SSH authentication to Wordpress

Nov 22, 2016 · 1 min read · kurztipp wordpress ·

Wordpress updates, themes and plugins can be installed very comfortable in the backend - unfortunately it is still required to specify FTP or FTPS connection information. Depending on your personal preferences or security policy FTP is often not an option - e.g. when you're maintaining a central directory for SSH users …
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Short tip: disable automatic NetworkManager connections after user logins

Nov 11, 2016 · 1 min read · kurztipp ·

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During a fresh CentOS installation recently I had the problem that a system's network connection was not working reliably. Sometimes pings were possible, sometimes not. After it was possible to elimiate the firewall as commonly root cause, it turned out that the network connectivity was only working if the console is …
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Short tip: Middle mouse click under OS X

Aug 14, 2016 · 1 min read · macos kurztipp ·

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The middle mouse button offers extended functionality in the most software - e.g. it can be used in web browsers to open or close tabs. When using the integrated trackpad of a MacBook or the Apple Magic Mouse this will not work due to missing mouse buttons.

To enable this functionality under OS X there is a free …

Short tip: sudo and vi(m)

Jun 28, 2016 · 1 min read · kurztipp ·

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System administrators know requirements like this - a dedicated server needs to be deployed for a new application. In order to enable owners to maintain their application they need permissions to modify relevant configuration files. In this scenario, sudo rules are often configured in a way to enable file modifications …
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Short tip: Enterprise Linux 7 and annoying prompts in GNU Screen titles

Jun 24, 2016 · 1 min read · kurztipp ·

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If you want to combine multiple terminal sessions on one window, multiplexers such as tmux or GNU Screen are useful tools. I have been using screen for 10 years with the following configuration:

 1$ cat ~/.screenrc
 2# F7+F8 for tab switching
 3bindkey -k k7 prev
 4bindkey -k k8 next
 5
 6# disable welcome
 7 …

Short tip: OMD and Python error 'TypeError: 'frozenset' object is not callable'

May 27, 2016 · 1 min read · omd kurztipp ·

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When configuring and testing a Python Icinga plugin within an OMD site, I stumbled upon the following error recently:

1TypeError: 'frozenset' object is not callable

After some tests on other systems, I found out, that the Python library hashlib shipped with OMD seems to be faulty. Copying the system-wide …

Short tip: Changed Owncloud CardDAV/CalDAV URLs

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/ …

Short tip: Reset VSAN cluster

Mar 20, 2016 · 1 min read · kurztipp vsan ·

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Especially when playing around with multiple vCenter and VSAN versions in a lab, it might be necessary to rebuild a VSAN cluster. In this scenario, it is sometimes also necessary to also reset the SSD and HDD drives used by VSAN. In my lab I'm often resetting the whole VSAN cluster to have a clear starting point - …
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Short tip: Reset Linux password unattended

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 …

Short tip: Configure HP Smart Array Controller using EFI Shell

Nov 10, 2015 · 1 min read · hp hp-ux itanium kurztipp ·

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New HP Smart Array controllers built into a HP Integrity machine are basically unconfigured. When running the EFI Shell, you will probably see the following message:

1HP Smart Array P800 Controller     (version 7.22)  0 Logical Drives
21785-Drive Array Not Configured
3     Run Smart Array Configuration Utility
4...
5 …