If you're having issues with configuring Active Directory authentification in VMware vCenter Server Appliance (vCSA) 5.5 you might want to have a look at the following log file: /var/log/vmware/vpx/vpxd_cfg.log

Ideally access this file using tail -f before saving the Active Directory configuration to see error messages …

While creating a VMFS storage I received the following error yesterday:

1Call "HostDatastoreSystem.QueryVmfsDatastoreCreateOptions" for object "ha-datastoresystem" on ESXi "xxx.xxx.xxx.xx" failed.

First I thought the freshly created logical drive on my HP RAID contorller had a failure - but this …

If you want to create a screenshot of your HP-UX system and don't have GIMP installed, you can easily create a X dump using the xwd commandos. This X dump can be converted into a JPG file (or some other picture format) on another machine using XnView.

After executing the xwd command simply click on the window for the …

Use the following commands to completely disable IPv6 under RHEL / CentOS up to version 6:

1# echo "options ipv6 disable=1" > /etc/modprobe.d/ipv6.conf
2# chkconfig ip6tables off
3# shutdown -r now

A module parameter prohibits IPv6 functionality after the next reboot. If this value wasn't set, some services …

txqueuelen is one of many configurable networking parameters. This paremeter defines the queue size in which the kernel stores data before it is sent over the network. By default this parameter has a value of 1000 - depending on your application you might want to increase this value using ifconfig or ip:

1# ifconfig …

Every VMware administration knows the following issue - the cluster needs to patched and so the particular nodes need to be rebooted. Fortunately this doesn't bother the users working on the farm becuase the virtual machines can be moved "online" between the cluster nodes.

There might be a little show stopper …

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OpenVPN …