• ASUS P9D-M, ASMB7-IKVM and false vCenter alarms

    calendar Apr 20, 2016 · 3 min read  ·
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    I was puzzled when I saw that the ESXi hosts of my new lab are generating critical CPU fan errors. Strange, I'm sure I mounted the fan correctly - otherwise the system would have been shutdown automatically to prevent serious damage. 🙂

    I had a look at the IPMI web interface and saw that a fan is detected - but why is …


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  • New VSAN 6.2 home lab

    calendar Apr 20, 2016 · 7 min read · vsan  ·
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    In 2008 I started working as VMware administrator and thus also began using vSphere at home. You might know this - as an IT person you want to have a lab at home that can be compared with the infrastructure at work. 🙂

    The hardware half-life is quite short and especially when virtualizing workloads you can reach memory …


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  • vSphere HTML5 Web Client Fling

    calendar Mar 30, 2016 · 4 min read  ·
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    A couple of days ago, VMware developers announced a new fling called vSphere HTML5 Web Client. Basically, this is a virtual appliance based on SUSE Linux Enterprise Server 12 serving a completely rewritten Web Client. In comparison with the well known Web Client, this client only uses HTML5 and JavaScript - beelzebub …
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  • Short tip: Reset VSAN cluster

    calendar 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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  • Forgot vCenter Server Appliance root and SSO administrator password

    calendar Feb 18, 2016 · 2 min read · vcsa  ·
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    Loosing the SSO administrator password of vCenter Server Appliance (vCSA) is really bad. Anyhow, this password can be reset, as far as you still have access to the appliance console - this requires the root password. If you also forgot this one, this is really, really, really bad - but also this happens sometimes in …
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  • vSphere High Performance Essentials

    calendar Feb 1, 2016 · 3 min read · esxi vcsa  ·
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    New year, new book - some of you might have noticed it: in the last couple of weeks, there were not much updates on my blog. The reason is that I have been working on a second book project. This time I had the pleasure to work as main author on a book about VMware vSphere. Last year, I have already been working as …
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  • Microsoft Active Directory Domain Services authentification under VMware vCenter Server Appliance 6

    calendar Nov 12, 2015 · 2 min read · vcsa  ·
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    For integration in Microsoft environments, VMware offers several Microsoft Active Directory Domain Services (AD DS) connectors in vCenter Server:

    • native integration: vCenter Server is managed as computer object in Active Directory
    • LDAP broker for authentification in Single-Sign-On (SSO)

    When installing the last …


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  • VMworld Europe 2015

    calendar Oct 20, 2015 · 12 min read · conference  ·
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    Last week the european VMworld event was taking place in Gran Via, Barcelona. Like every year VMware hosts their own event, that is focussed on VMware and partner developments. This year's event was themed "Ready for ANY", giving VMwares focus on more flexible Cloud and Mobility a voice.

    On four days …


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  • Short tip: Full vCenter Server Appliance 5.5 database prohibits logins

    calendar Aug 18, 2015 · 2 min read · kurztipp vcsa  ·
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    Recently one of my vCenter Server Appliance (vCSA) 5.5 installations was unable to proceed logins anymore. After having a look at the storage consumption I saw that two partitions were filled up:

    1# df -h /storage/{core,db}
2Filesystem      Size  Used Avail Use% Mounted on
3/dev/sdb1        20G   20G     0 100% …

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  • VMware ESXi Embedded Host Client Fling

    calendar Aug 16, 2015 · 4 min read · esxi  ·
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    One of the rumors regarding VMware vSphere 6 was that a kind of slim vSphere Web Client will be part of ESXi to replace the outdated vSphere Client (legacy client). ESX offered a web-based administration utility, that has been completely removed in ESXi. Since then, the web interface of ESXi is only capable of browsing …
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