vCenter Server 5.5 keeps on crashing, fix available

A fellow vSphere administrator on #vmug_fi IRCnet channel was hit by obscure issue on vCenter Server 5.5 Update 1b, after a vCenter Server Windows host reboot vpxd.exe kept on crashing immediately after it started. VMware support came through and provided a resolution in no time, it seems that vCenter Server 5.5.x thread stack size is too ...

Manage ESXi host power saving state using vCenter Orchestrator

Manage ESXi host power saving state using vCenter Orchestrator
VMware ESXi software is capable of utilizing CPU power saving techniques by controlling CPU clock speed and core run state dynamically by demand. In some cases dynamic CPU power saving can have impact on system performance, depending on system total load and application used, performance can be reduced up to 20% compared to system with ...

Manage vSwitch VM portgroups with vCenter Orchestrator

Manage vSwitch VM portgroups with vCenter Orchestrator
Here is something handy for those managing large vSphere clusters without luxury of having distributed virtual switch available. I have developed a vCenter Orchestrator workflow for managing ESXi host standard vSwitch VM portgoups on a cluster level, with this workflow you can add and remove VM portgroups across large clusters with a single task. There ...

RHEL, CentOS and Oracle Linux 7 tips 3

RHEL, CentOS and Oracle Linux 7 tips
Here are some miscellaneous tips for RHEL, CentOS and Oracle Linux 7 systems I have found useful. This post is a work in-progress, I will update it every now and then as I come up with more tips. Systemd basic usage Systemd has replaced legacy initd and init scripts, systemd services are managed with systemctl. Start ...

Oracle Linux 7 released

Oracle Linux 7 released
Oracle Linux 7 is GA as of today, installation medias are available for download free of charge at Oracle Software Delivery Cloud. Oracle Linux 7 is based on Red Hat Enterprise Linux 7 (RHEL), but unlike RHEL, Oracle Linux is supported by free OS updates from Oracle. Techical support and additional features such as Ksplice and ...

Fix for Google Chrome and Cisco UCS CIMC remote console Web Start bug

Fix for Google Chrome and Cisco UCS CIMC remote console Web Start bug
Cisco UCS CIMC remote console access (KVM) has annoying issue with Google Chrome browser, instead of launching Java Web Start to launch console application Google Chrome will just download Web Start link as file with malformed extension. Fortunately there is an very easy fix for this, in Google Chrome Web Store is an extension “Fix ...

Memory page combining in Windows 8/2012 2

Memory page combining in Windows 8/2012
One of the new features introduced in Windows kernel for Windows 8 and Server 2012 was memory page combining which allows more efficient use of available RAM resources on small systems. Windows 8 memory page combining is pretty much identical to Transparent Page Sharing feature available in VMkernel of VMware ESXi. There is very little ...

Hot-fix released for vCenter Orchestrator 5.5.1 workflow scheduling bug 1

If you have used workflow scheduling in VMware vCenter Orchestrator 5.5.1 and you have a workflow which is scheduled to run repeatedly you may have noticed that after a while this scheduled workflow stops executing. This is a known bug in vCO 5.5.1 and VMware has recently released a hot-fix for this in KB article 2083003. Update ...
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