• Short tip: VMware vSphere "Module DiskEarly power on failed to lock file"

    calendar Mar 26, 2015 · 1 min read · esxi kurztipp  ·
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    While booting a virtualized cluster node I stumped upon a suspicious error message recently:

    Module DiskEarly power on failed to lock file

    In the VMware forums I found a hint that locking mechanisms might account for this issue. However the thread focussed on desktop products and not on vSphere. I found no lock files ( …


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  • Short tip: Monitor Koukaam NETIO PDUs with Nagios / Icinga

    calendar Mar 8, 2015 · 1 min read · icinga nagios netio kurztipp  ·
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    Koukaam NETIO power outlets offer a network interface that can be used for controlling the particular ports comfortably. It would be even nicer to monitor them with Nagios or Icinga. 2012 I created a provisional bash script for monitoring the ports and time synchronization over NTP.

    This weekend I migrated the script …


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  • vRetro trip: MS-DOS 6.22 and Windows 3.1 in 2015

    calendar Mar 6, 2015 · 12 min read · retro  ·
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    Because of a recent comment on this blog I stumbled upon an interesting Abandonware webseite. For me this was a reason for diving into a world of forgotten software (thank you very much for the hint, Frank!). While browsing the software archive I vividly recalled my first steps with the computer. Back then - in …
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  • Mercedes-Benz E220 CDI (W212) Review

    calendar Feb 17, 2015 · 6 min read  ·
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    Last week I had the chance to drive a Mercedes-Benz E class. For me it was the first Mercedes-Benz at all that I drove. Of course I took the opportunity to have a deeper look at the car and summarize my impressions.

    Technical data

    The car's basic data looked like this:

    Model nameE 220 BlueTEC BlueEFFICIENCY …

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  • Short tip: PostgreSQL error "SQLSTATE[08006] [7] FATAL: Ident authentication failed"

    calendar Feb 15, 2015 · 2 min read · kurztipp  ·
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    While testing a web application that uses PHP PDO to establish a connection to a PostgreSQL database I stumbled upon the following error message:

    1Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[08006] [7] FATAL: Ident authentication failed for user "user"' in xxx.php …

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  • Oracle XE: reset locked users

    calendar Feb 13, 2015 · 2 min read · oracle  ·
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    If you haven't used an Oracle database for some time you might stumble upon the issue I just had: all internal user accounts were locked and I also didn't know the passwords.

    By default login information of internal users are invalid after 180 days.

    The following accounts are important to me on my Oracle 11gR2 Database …


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