Very persistent NTP issues on VCSA and PSC appliances

May 11, 2017 Kim Bottu 0

For the 2 weeks I had been having very annoying NTP sync issues on some of my VCSA and PSC appliances in one of the datacenters. While my SSO domain and vCenter enhanced linked mode were for the most part working properly, it still bugged me that the NTP clocks on my PSC and VCSA in datacenter 1 were properly syncing with the NTP source (windows NTP source), but the NTP time on my PSC and VCSA in datacenter 2 were always off with somewhere between 3 to 7 minutes with the clocks of all my other appliances and Windows VM’s.  They did how ever sync properly with each other.  (For trouble shooting purposes, I pointed all appliances to a single NTP source in a single […]

Emad Younis & Adam Eckerle – The vCenter server and Platform Services Controller Guide to the Galaxy

October 18, 2016 Kim Bottu 0

If you have questions about the deployment of or migration to the VCSA no matter what version, Emad and Adam are probably the guys you want to have a conversation with and the session called ‘The vCenter server and Platform Services Controller Guide to the Galaxy’ should be the first session you should check out at VMworld Barcelona. The right question to ask yourself here is: why would you want to stay with the Windows Server  hosted vCenter server? Because you are used to it and everyone in your department can support it? Because the database administrators know perfectly well how to support Oracle or MSSQL databases but no Postgres? Because the Windows vCenter server historically has supported more features and has […]

Adding a second NIC to a VCSA

April 24, 2016 Graeme Vermeulen 0

Here’s how you add an additional NIC on a VCSA – and I’ll show you step-by-step with actual keyboard commands as no other guides out there do: The VAMI can be accessed via https://(IP or FQDN):5480 – the username is normally root and the default password is vmware Typically this is what you’d see on most standard instances: Adding the additional NIC in vSphere in as easy to do as you’d expect: But you won’t see the additional NIC in the VAMI: It will actually start throwing errors. We need to set add the new NIC manually. To do this, you can either use CLI or YaST2. YaST2 is a SUSE management tool which lets you configure basic elements of […]

Can’t login using Windows Session Credentials – VCSA (vSphere 6)

April 24, 2016 Graeme Vermeulen 0

Quite a few things seem to have changed with the VCSA in vSphere 6. The most obvious change is that the appliance is no longer deployed as an OVA / OVF template but rather from an ISO image. As part of deploying the ISO, you’ll be prompted to put in your settings for the vCenter before it’s even powered on. This can be quite tricky to get right the first time – so make sure you have created the relevant DNS records on your DNS servers and configured your VM network on the chosen host for initial deployment. Setting up SSO for your Windows Domain is exactly the same, however when ticking the “Use Windows Session Credentials” box you will […]

Windows vCenter vs. vCenter Server (Virtual) Appliance (vCSA/vCVA)

March 22, 2015 Shady ElMalatawey 5

The following question about vCenter Server is which version to deploy: Windows vCenter Server or vCenter Server Appliance (vCSA). First, let’s examine the components of any vCenter Server. They’re Single-Sign On (SSO), Inventory Service, vCenter Server, Web Client and a back-end Database.   To answer the question above, we need to take a deep look at how answer of the above question affects all of these components. Keep in mind that it’s also related to the way you’d deploy your vCenter Server Components according to your customer/case needs and requirements or constraints. Some components and other VMware products deployment are affected by wither you’d use Windows vCenter or vCenter Server Appliance (vCSA). My vExpert colleague, Mohammed Raffic, made a great comparison between […]

Virutalizing vCenter Server: Yes or No?

March 13, 2015 Shady ElMalatawey 1

“Should I virtualize vCenter Server or not?!”.. This question is asked a lot, specially during preparing for new vSphere deployments. IMO, and in 99.9% of all cases I meet, I answer with “Yes!! Why not?”. vCenter Server is a central part of your Management Layer of your infrastructure that requires high level of availability and performance. vSphere 5.x is capable of providing the required level of performance for vCenter Server itself or for any one of its components (SSO, Inventory Service or Web Client) as well as its required back-end Database. In the same time, virtualizing vCenter Server provides higher level of availability, using vSphere HA and the new SMP Fault Tolerance in vSphere 6.0. Despite many advantages of virtualizing vCenter Server, […]

Modify vCenter Server Appliance 5.5 Time Zone

March 2, 2015 Shady ElMalatawey 0

Few days ago, I went to a customer for a migration project to vSphere 5.5. After deploying vCenter Server Appliance 5.5 U2d and during configuration, I had some issues with “root” account -described here– that I needed to modify the time zone on my vCenter Server Appliance and I got a big surprise. On vCenter Appliance 5.1, I used to do it through its console as the screenshot below indicate. For vCenter Appliance 5.5, and surprisingly, this can’t be done anymore as indicated by this KB. Again, I began to search for some help, till I found this KB about how to change ESX 4.x Time-zone using service console. I thought that vSphere 4.x Service Console is a Linux Shell UI which is […]

Unable to log in with “root” on vCenter Server Appliance 5.5

February 24, 2015 Shady ElMalatawey 0

Yesterday, I went to a customer for a migration project to vSphere 5.5. After deploying vCenter Server Appliance 5.5 U2d and configuring IP addresses, I logged in with “root” account and default password to begin configuration and I started with adding it to my customer’s AD Domain to adjust its time sync and confirm machine naming and DNS settings. After I added it successfully, I rebooted the vCenter Appliance and once it booted up I tried to log in with “root” and boom, I can’t log in. It threw an error: “Unable to authenticate user. Please try again.” First, I thought I was writing password wrong, but I wasn’t as I found that I could log in using SSH. Then, […]