Synchronize time with external NTP server on Windows Server 2008 (R2)

First, locate your PDC Server. Open the command prompt and type: C:>netdom /query fsmo Log in to your PDC Server and open the command prompt. Stop the W32Time service: C:>net stop w32time Configure the external time sources, type: C:> w32tm /config /syncfromflags:manual /manualpeerlist:pool.ntp.org Make your PDC a reliable time source for the clients. Type: C:>w32tm /config /reliable:yes … Read moreSynchronize time with external NTP server on Windows Server 2008 (R2)

Why VXLAN is Awesome, and Why it May Not Be

http://www.discoposse.com/index.php/2012/10/27/why-vxlan-is-awesome-and-why-it-may-not-be/ If you’re not already familiar with VXLAN, you should get to know it. VXLAN (acronym for Virtual eXtensible Local Area Network) is fast becoming the hottest new discussion item for Cloud service design. What is VXLAN? VXLAN technology overlays a virtualized Layer 2 on top of a Layer 3 network allowing the extension of … Read moreWhy VXLAN is Awesome, and Why it May Not Be

Reset the administrator@vsphere.local password

http://vinfrastructure.it/2014/05/reset-the-vmware-sso-password/ VMware Single Sign On is a new VMware vCenter Server components, introduced for the first time in vSphere 5.1, that manage the authentication across different VMware components both for services and users. It is not just an authentication broker but also a security token exchange providing a more secure way of accessing your vSphere … Read moreReset the administrator@vsphere.local password

Cluster warning for ESXi Shell and SSH appear on an ESXi 5.x host

ESXi host shows these errors: ESXi Shell for the Host has been enabled SSH for the host has been enabled Resolution To disable these warnings using vSphere Client: Select the ESXi host from the Inventory. Click the Configuration tab. Click Advanced Settings in the Software menu. Navigate to UserVars > UserVars.SuppressShellWarning. Set the value from … Read moreCluster warning for ESXi Shell and SSH appear on an ESXi 5.x host

The number of heartbeat datastores for host is 1, which is less than required: 2

Symptoms The datastore is not accessible by all hosts. The number of shared datastores between all hosts is less than 2. While implementing a vSphere High Availability (HA) configuration, you see this error on one of the ESXi 5.x hosts:The number of heartbeat datastores for host is 1, which is less than required: 2 The number … Read moreThe number of heartbeat datastores for host is 1, which is less than required: 2

openfiler you do not appear to have networking

ifconfig -a /etc/sysconfig/network-scripts/ifcfg-ethX DEVICE=ethX http://www.networknet.nl/apps/wp/archives/383 At some point my lab Openfiler was assigned static ip address and the iSCSI target stopped to function; also it was not reachable by the web interface at tcp port id 446 anymore. Several reboots did not help to solve the problem. What happened? The network interface configuration was changed. … Read moreopenfiler you do not appear to have networking

Converting VMware Workstation Thick Disks (VMDKs) to Thin

https://www.vmware.com/support/ws55/doc/ws_disk_manager_examples.html Examples Using the VMware Virtual Disk Manager The following examples illustrate how to use the virtual disk manager. You run the virtual disk manager from a command prompt. Creating a Virtual Disk To create a new virtual disk, use a command like the following: vmware-vdiskmanager -c -t 0 -s 40GB -a ide myDisk.vmdk This … Read moreConverting VMware Workstation Thick Disks (VMDKs) to Thin

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