To enable vMotion1vMotion

1) Login to vCenter Server using the vSphere Client.
2) Click the ESX host.
3) Click the Configuration tab.
4) Under the Hardwaresection, click Networking.
5) Click Propertiesfor the virtual switchwhere a VMkernel port has been configured.
6) In the dialog box that opens,select vmkernelin the Ports taband click Edit.
7)To enable vMotion,select Enablednext to vMotionand click OK.

• Edit the configuration filefor SSH with the command:nano /etc/ssh/sshd_config• Find the line that starts with PermitRootLogin and change the no to yes. You can findthis line about2 pages down from the top. Save the file by first pressing Ctrl-O and then Enter.. Exit with Ctrl-X.• Restart the sshd service with the command: service sshd restart
 Or
  • Access Vcenter => Hosts & Clusters -> ESXi Server -> Configuration -> Select'Security Profile' Under software . • Select SSH and start the process

1) Ping times out2out
2) Network connectivity is lost3lost
3) Primary storage didn't mount correctly4correctly
4) Heart beat has failed

1) No capacity in hypervisor - CPU/Memory2Memory
2) No ip address(public) availability3availability
3) No storage space available4available
4) System vm template has not been properly downloaded to primary storagewhile deploying first vm in account

1) Move all cent os repos to /oldrepos folder from yum.repos.d2d
2) yum erase qemu*
3) rm -rf /var/cache/yum/x86_64/6/cloud-temp/
4) yum clean all5) yum erase libvirt-client6) yum install libvirt

1) mkdir /root/nfssailaja2) mount -t nfs10.102.123.240:/nfs-iso-lib/ /root/nfssailaja/3) mount -o loop /root/nfssailaja/rhel-server-6.2-x86_64-dvd.iso /media/4) Create /etc/yum.repos.d/rhel6.repo with below contents
 rhelname=rhel6baseurl=file:///mediaenabled=1gpgcheck=0

Image Removed

1. Unmount all Primary storages2storages
2. Uninstall Agent3Agent
3. Remove cloud-temp :cd /var/cache/yum/x86_64/6Server======================================cloud-temp rhelisoroot@band-cloud32 6Server# rm -rf cloud-temp/root@band-cloud32 6Server#
4.  rm cloud-temp
5.  pwd/var/cache/yum/x86_64/6Serveryum 6Server
6. yum erase qemu-kvmvirsh command : list --all =>this will list all the instances created with tht hypervisordestroy <domain id>remove all linked folder with /mnt

1. Destroy all VM's : xe vm-uninstall --multiple --force2force
2. Remove all VLAN's : cd /opt/xensource/bin ; sh cloud-clean-vlan.sh2sh
3. xe vif-unplug uuid=9e70d7f3-6b6e-9dac-36ba-9b421c8ec2dc3. xe vif-destroy uuid=9e70d7f3-6b6e-9dac-36ba-9b421c8ec2dc49b421c8ec2dc
4. xe network-destroy uuid=c03efe07-b963-5b7d-bb5f-a0294f4682fa

1. fdisk /dev/sd*
2. press"n" ->"p" ->"w" to write changes3changes
3. mkfs.ext3 /dev/sd*141
4. mount /dev/sd*1 <targetDir>

Refer the documented information @ http://support.citrix.com/article/CTX132008

Image Removed

1. mkdir /root/nfssailaja2nfssailaja
2. mount -t nfs10.102.123.240:/nfs-iso-lib/ /root/nfssailaja/
3. mount -o loop /root/nfssailaja/rhel-server-5-x86_64-dvd.iso /media/
4. vi /etc/yum.repos.d/rhel6.repo and add below contents :
 rhelname=rhel5baseurl=file:///media/Serverenabled=1gpgcheck=0

Image Removed

 Note: repomd.xml file is located under Server folder.