Picked up this useful tip from the vCenter Server HA performance and Best Practices guide (see – http://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/techpaper/vcha65-perf.pdf) Will see on Pg 23 it will refer to the fact that: “As a best practice, it is highly recommended to pick a time period with a very light workload to enable VCHA. Otherwise, the newly cloned Passive … More vCenter 6.5 tip: Enabling vCenter HA? do so when things are quiet in your environment
Enhanced Linked Mode enables a single point of management across all vCenter Servers in the same vSphere Single Sign On (SSO) domain. Easier admin results as can look after multiple vCenter instances from one pane. To enable Enhanced Linked Mode, follow these steps: Ensure that Enhanced Linked Mode requirements are met: All PSCs are in … More VCenter tip: Enhanced Link Mode and how to enable
Quirky one this, seen this in forums before and was able to replicate in the lab. Scenario’s https://apis.google.com/_/scs/apps-static/_/js/k=oz.gapi.en_US.4U1H-GwSdYI.O/m=auth/exm=plusone/rt=j/sv=1/d=1/ed=1/am=AQ/rs=AGLTcCPMXL-vrLu8Uzn9Cpj7SQGu-IaY0A/cb=gapi.loaded_1 //s7.addthis.com/static/menu.60ffa9b9f4790203d479.js i) login to vCenter 6.0 by SSH and root user and password is working fine ii) login to vCenter 6.0 by vSphere Client and using AD domain credentials working fine Can’t login to vCenter 6.0 by … More ESXi tip : Getting””Cannot complete login due to incorrect username or password” but you are sure you’ve entered right details
Oftentimes will see the above message when working within the VCSA appliance and needing to carry out admin functions. To resolve: i) Logon to the console eg https:<appliancename:5480 and enter your administrator id and password ii) Click vCenter Server after logon iii) Click the Summary tab iv) Click on the Stop button to stop the server component If the above doesn’t … More VCSA Tip: how to fix the “Error: VPXD must be stopped to perform this operation” message
In vSphere infrastructure storage as you probably know, I/O usage of virtual machines can be controlled by Storage I/O control (SIOC). In event of hitting issues good to enable logging to help resolve issues. Here’s how to enable SIOC logging from the vSphere client: Enter your vSphere web client URL and log in. Click Host and Configuration … More vCenter quick tip: Need to troubleshoot SIOC issues? here’s how to enable logging
If ever you encounter DRS issues in any of your vCenter cluster environments may need to get a DRS dump file generated in order to troubleshoot the issue. The file itself is called drmdump and contains various calculations that DRS uses to measure possible benefits to migrate VM’s. Locations for these files: vCenter Server Appliance /var/log/vmware/vpx/drmdump/clusterName … More vCenter DRS tip: Anyone used the cool online tool VM Resource and Availability Service?
If using a small/medium vCenter setup may well be using a Postgres database to get you by. Good to run a check on it from time to time. Standard operations include: Performing regular backups Monitoring log growth and compact when needed Although as part of its own day-to-day operations space is automatically reclaimed sometimes you may … More vCenter tip: housekeeping tips for your vCenter Server Database