Lab Virtual Machines

There are important VMs on both Cluster 0 and Cluster 2. Cluster 0 uses VMware while Cluster 2 uses KVM/libvirt.

Virtual Machine Backups

he is the main hypervisor of BKS. It holds the following VMs:

 alpha                          DNS,DHCP,Puppet,Foreman
 beta                           Authentication server; openldap
 chi                              
 epsilon                        public portal gateway to cluster
 gamma                          Sun Grid Engine
 phi                            for excipients website
 psi                            
 tau                            web server for zinc
 zeta                           
 sigma                          not sure what this does but we can keep it off 

 These VMs were backed up to qof:/export/ex9/archive/libvirt during the downtime of Aug 17,2018.  The file format is a .tar.gz file.

Cluster 0

Significant hypervisors on Cluster 0: vmware1 (access via root with clust 0 formulax2)

VMWare Commands

Webpage that describes numerous VMware commands: http://www.doublecloud.org/2013/11/vmware-esxi-vim-cmd-command-a-quick-tutorial/

# To get a list of all VMs and obtain VMid
vim-cmd vmsvc/getallvms

# To shutdown a VM: 
vim-cmd vmsvc/power.off <VMid>

# To turn on a VM: 
vim-cmd vmsvc/power.on <VMid>

Cluster 2

kvm/libvirt commands

In order for a user to issue KVM commands, the service libvirtd must be running. Check the status of libvirtd by issuing the command: service libvirtd status. If libvirtd is not running, then you may issue command: service libvirtd start.

# to get list of VMs on hypervisor
virsh list --all 
 
# to start a VM 
virsh start <VM-name or VMid> 

# to shutdown a VM
virsh shutdown <VM-name or VMid> 

# to force shutdown a VM (equivalent of pulling the plug on a computer)
virsh destroy --graceful <VM-name or VMid> 

# to pause a VM
virsh suspend <VM-name or VMid> 

# to unpause a VM
virsh resume <VM-name or VMid> 

# get XML file contents of VM
virsh dumpxml <VM-name or VMid>