VMS5 : Partition style is GPT (GUID partition table), So maximum single extend (LUN) size is 64TB. * Limit: Specify the upper limit for this resource pool’s CPU/memory allocation. * Reservation: Specify a guaranteed CPU/memory allocation for this resource pool. You can select custom for proportional weight. Select Low, Normal, or High specify share values respectively in a 1:2:4 ratio. * Shares: Specify CPU/memory shares for this resource pool with respect to the parent’s total CPU/memory resources. You can create multiple resource pools as direct children of the host or cluster and configure them, and delegate their control to other individuals or organizations. Resource pools allow you to delegate control of host resources, but the benefits are especially evident when resource pools are used to compartmentalize all resources What is resource pool and their options ? Vm-support -X World_ID (WID for hung vm, capital X to generate dump) Vm-support -x –> to see the list of vms hosted on the ESX Tar -tzf esx-–9.tgz –> to see the list of files created in gzip file etc/vmware/vm-support –> This will create the gzip file in VMFS volume\var\tmp To create the dump file of ESX server for analysis…
How to create the ESX dump file for analysis by vmware. VPXA is vCenter server agent, allows vcenter server to connect to ESX hosts. To restart the service : cd /etc/init.d/hostd restart
To check if the service is running,SSH to ESX, ps -ef | grep hostd If vmware-hostd fails, ESX/ESXi hosts disconnects from vCenter Server/VirtualCenter and cannot be managed. The vmware-hostd management service is the main communication channel between ESX/ESXi hosts and VMkernel. What is the difference between VPXA and hostd service? Bigger foot print and prone to attack, less secure. More secure, less prone to surface attack. Service consol (optional, not vailable in ESXi)ĮSXi will not have service console (Linux based VM used for troubleshooting and configuration purpose). VMkernel (for host management, vmotion and attach iscsi,NFS datastores) If enabled, only the CPUs (intel or AMD family) which are compatible for vmotion can be the member server of a cluster. Can be checked by esxtop command.Įnhenced vmotion compatibility (EVC) is a new feature in ESX4.
Necessary, the hypervisor can directly swap out guest physical memory to the swap file, which frees host physical memory for other VMs.ĮSX maintains four host free memory states: high, soft, hard, and low, which are reflected by four thresholds: 6 percent, 4 percent, 2 percent, and 1 percent of host memory respectively. When starting a virtual machine, the hypervisor creates a separate swap file for the virtual machine. Ballooning induces guest memory pressure. That is, the hypervisor transfers the memory pressure from the host to the virtual machine.
As a result, the hypervisor offloads some of its memory overload to the guest operating system while slightly loading the virtual machine. By inflating the balloon, a virtual machine consumes less physical memory on the host, but more physical memory inside the guest. Typically, the hypervisor inflates the virtual machine balloon when it is under memory pressure.
Ballooning -> a pseudo-device driver loaded on to the guest VM Transparent page sharing -> memory pages having similar content can be shared across the guest VMsī. A couple of reboots proved this worked! What I can't work out is that know one else had blogged this issue.Three techniques to reclaim host physical memory to support memory over-commitment.Ī. I set the VUM service to delayed start and this sorted the issue.
Sure enough when I stopped VMware Update Manager, port 80 was then free. NETSTAT -ANO reported that java.exe was taking the port so I presumed that Tomcat was stuffed.įix: In the end I thought I would stop some services to see if that was the cause. I even tried upgrading the customer the vCenter 4.1 U2 this still did not work. Some reports suggest that WinRM takes port 80 but this was later found to be incorrect. Failed to create http proxy: Resource is already in use: Listen socket: :80įuther Googling suggested either IIS has been installed, or the SQL reporting service was installed. I checked the VPXA logs in this location %ALLUSERSPROFILE%\Application Data\VMware\VMware VirtualCenter\Logs\ and found this error: After some Googling I would appear that something was already running on port 80. We needed to reboot the VC VM the customer hadn't done this in ages, and typically, after the reboot the vCenter server service wouldn't start, I check the eventvwr and found event id 1000.