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Merge pull request #1979 from gurevichmark/RHEV_docs
Add RHEV KVM documentation
This commit is contained in:
Victor Hu
GitHub
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At the time of this writing there is no ISO image availabe for RHEV. Individual RPM packages need to be downloaded.
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* Download *Management-Agent-Power-7* and *Power_Tools-7* RPMs from RedHat to the xCAT management node. Steps below assume all RPMs were downloaded to ``/install/post/otherpkgs/rhels7.3/ppc64le/RHEV4/4.0-GA``
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* Create a yum repository for the downloaded RPMs ::
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createrepo /install/post/otherpkgs/rhels7.3/ppc64le/RHEV4/4.0-GA
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* Create new osimage definition based on an existing RHEL7 osimage definition ::
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mkdef -t osimage -o rhels7.3-ppc64le-RHEV4-install-compute \
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--template rhels7.3-ppc64le-install-compute
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* Modify ``otherpkgdir`` attribute to point to the package directory with downloaded RPMs ::
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chdef -t osimage rhels7.3-ppc64le-RHEV4-install-compute \
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otherpkgdir=/install/post/otherpkgs/rhels7.3/ppc64le/RHEV4/4.0-GA
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* Create a new package list file ``/install/custom/rhels7.3/ppc64le/rhelv4.pkglist`` to include necessary packages provided from the OS. ::
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#INCLUDE:/opt/xcat/share/xcat/install/rh/compute.rhels7.pkglist#
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bridge-utils
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* Modify ``pkglist`` attribute to point to the package list file from the step above ::
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chdef -t osimage rhels7.3-snap3-ppc64le-RHEV4-install-compute \
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pkglist=/install/custom/rhels7.3/ppc64le/rhelv4.pkglist
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* Create a new package list file ``/install/custom/rhels7.3/ppc64le/rhev4.otherpkgs.pkglist`` to list required packages ::
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libvirt
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qemu-kvm-rhev
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qemu-kvm-tools-rhev
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virt-manager-common
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virt-install
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* Modify ``otherpkglist`` attribute to point to the package list file from the step above ::
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chdef -t osimage rhels7.3-snap3-ppc64le-RHEV4-install-compute \
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otherpkglist=/install/custom/rhels7.3/ppc64le/rhev4.otherpkgs.pkglist
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* The RHEV osimage should look similar to: ::
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Object name: rhels7.3-ppc64le-RHEV4-install-compute
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imagetype=linux
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osarch=ppc64le
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osdistroname=rhels7.3-ppc64le
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osname=Linux
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osvers=rhels7.3
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otherpkgdir=/install/post/otherpkgs/rhels7.3/ppc64le/RHEV4/4.0-GA
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otherpkglist=/install/custom/rhels7.3/ppc64le/rhev4.otherpkgs.pkglist
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pkgdir=/install/rhels7.3/ppc64le
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pkglist=/install/custom/rhels7.3/ppc64le/rhelv4.pkglist
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profile=compute
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provmethod=install
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template=/opt/xcat/share/xcat/install/rh/compute.rhels7.tmpl
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Install and Configure Hypervisor
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================================
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Provision Hypervisor
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--------------------
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* **[PowerKVM]**
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.. include:: pKVMHypervisor.rst
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* **[RHEV]**
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.. include:: RHEVHypervisor.rst
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#. Customize the hypervisor node definition to create network bridge
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xCAT ships a postscript **xHRM** to create a network bridge on kvm host during installation/netbooting. Specify the **xHRM** with appropriate parameters in **postscripts** attibute. For example:
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* To create a bridge named 'br0' against the installation network device specified by **installnic**: ::
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chdef kvmhost1 -p postscripts="xHRM bridgeprereq br0"
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* To create a bridge with default name 'default' against the installation network device specified by **installnic**: ::
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chdef kvmhost1 -p postscripts="xHRM bridgeprereq"
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* To create a bridge named 'br0' against the network device 'eth0': ::
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chdef kvmhost1 -p postscripts="xHRM bridgeprereq eth0:br0"
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**Note**: The network bridge name you use should not be the virtual bridges (vbrX) created by libvirt installation [1]_.
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#. Customize the hypervisor node definition to mount the shared kvm storage directory on management node **(optional)**
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If the shared kvm storage directory on the management node has been exported, it can be mounted on PowerKVM hypervisor for virtual machines hosting.
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An easy way to do this is to create another postscript named "mountvms" which creates a directory **/install/vms** on hypervisor and then mounts **/install/vms** from the management node, the content of "mountvms" can be: ::
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logger -t xcat "Install: setting vms mount in fstab"
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mkdir -p /install/vms
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echo "$MASTER:/install/vms /install/vms nfs \
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rsize=8192,wsize=8192,timeo=14,intr,nfsvers=2 1 2" >> /etc/fstab
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Then set the file permission and specify the script in **postscripts** attribute of hypervisor node definition: ::
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chmod 755 /install/postscripts/mountvms
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chdef kvmhost1 -p postscripts=mountvms
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#. Provision the hypervisor node with the osimage ::
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nodeset kvmhost1 osimage=<osimage_name>
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rpower kvmhost1 boot
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Create network bridge on hypervisor
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------------------------------------
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To launch VMs, a network bridge must be created on the KVM hypervisor.
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If the hypervisor is provisioned successfully according to the steps described above, a network bridge will be created and attached to a physical interface. This can be checked by running ``brctl show`` on the hypervisor to show the network bridge information, please make sure a network bridge has been created and configured according to the parameters passed to postscript "xHRM" ::
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# brctl show
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bridge name bridge id STP enabled interfaces
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br0 8000.000000000000 no eth0
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If the network bridge is not created or configured successfully, run "xHRM" with **updatenode** on managememt node to create it manually:::
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updatenode kvmhost1 -P "xHRM bridgeprereq eth0:br0"
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Start libvirtd service
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----------------------
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Verify **libvirtd** service is running: ::
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systemctl status libvirtd
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If service is not running, it can be started with: ::
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systemctl start libvirtd
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.. [1] Every standard libvirt installation provides NAT based connectivity to virtual machines out of the box using the "virtual bridge" interfaces (virbr0, virbr1, etc) Those will be created by default.
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@ -26,12 +26,12 @@ The xCAT based KVM solution offers users the ability to:
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* install copy on write instances of virtual machines
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* clone virtual machines
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This section introduces the steps of management node preparation, KVM hypervisor setup and virtual machine management, and presents some typical problems and solutions on xCAT kvm support.
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This section introduces the steps of management node preparation, hypervisor setup and virtual machine management, and presents some typical problems and solutions on xCAT kvm support.
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.. toctree::
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:maxdepth: 2
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kvmMN.rst
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powerKVM.rst
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hypervisorKVM.rst
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manage_vms.rst
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FAQ.rst
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Obtain a PowerKVM ISO and create PowerKVM osimages with it: ::
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copycds ibm-powerkvm-3.1.0.0-39.0-ppc64le-gold-201511041419.iso
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The following PowerKVM osimage will be created ::
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# lsdef -t osimage -o pkvm3.1-ppc64le-install-compute
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Object name: pkvm3.1-ppc64le-install-compute
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imagetype=linux
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osarch=ppc64le
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osdistroname=pkvm3.1-ppc64le
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osname=Linux
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osvers=pkvm3.1
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otherpkgdir=/install/post/otherpkgs/pkvm3.1/ppc64le
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pkgdir=/install/pkvm3.1/ppc64le
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profile=compute
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provmethod=install
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template=/opt/xcat/share/xcat/install/pkvm/compute.pkvm3.ppc64le.tmpl
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@ -1,92 +0,0 @@
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Setup PowerKVM Hypervisor
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=========================
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Provision Hypervisor with PowerKVM
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----------------------------------
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Please follow the :ref:`Diskful Installation <diskful_installation>` to provision kvm hypervisor with PowerKVM, several customization steps should be taken into consideration.
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To demonstrate the brief steps on hypervisor provision, take **ibm-powerkvm-3.1.0.0-39.0-ppc64le-gold-201511041419.iso** for example here:
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#. Obtain a PowerKVM iso and create PowerKVM osimages with it: ::
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copycds ibm-powerkvm-3.1.0.0-39.0-ppc64le-gold-201511041419.iso
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The following PowerKVM osimage will be created on success ::
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# lsdef -t osimage -o pkvm3.1-ppc64le-install-compute
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Object name: pkvm3.1-ppc64le-install-compute
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imagetype=linux
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osarch=ppc64le
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osdistroname=pkvm3.1-ppc64le
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osname=Linux
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osvers=pkvm3.1
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otherpkgdir=/install/post/otherpkgs/pkvm3.1/ppc64le
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pkgdir=/install/pkvm3.1/ppc64le
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profile=compute
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provmethod=install
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template=/opt/xcat/share/xcat/install/pkvm/compute.pkvm3.ppc64le.tmpl
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#. Customize the hypervisor node definition to create network bridge
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xCAT ships a postscript **xHRM** to create a network bridge on kvm host during installation/netbooting. Please specify the **xHRM** with appropriate parameters in **postscripts** attibute. Here is some examples on this:
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To create a bridge with default name 'default' against the installation network device which was specified by **installnic** attribute ::
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chdef kvmhost1 -p postscripts="xHRM bridgeprereq"
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To create a bridge named 'br0' against the installation network device which was specified by **installnic** attribute(recommended) ::
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chdef kvmhost1 -p postscripts="xHRM bridgeprereq br0"
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To create a bridge named 'br0' against the network device 'eth0' ::
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chdef kvmhost1 -p postscripts="xHRM bridgeprereq eth0:br0"
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**Note**: The network bridge name you use should not be the virtual bridges created by libvirt installation [1]_.
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#. Customize the hypervisor node definition to mount the shared kvm storage directory on management node **(optional)**
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If the shared kvm storage directory on the management node has been exported, it can be mounted on PowerKVM hypervisor for virtual machines hosting.
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An easy way to do this is to create another postscript named "mountvms" which creates a directory **/install/vms** on hypervisor and then mounts **/install/vms** from the management node, the content of "mountvms" can be: ::
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logger -t xcat "Install: setting vms mount in fstab"
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mkdir -p /install/vms
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echo "$MASTER:/install/vms /install/vms nfs \
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rsize=8192,wsize=8192,timeo=14,intr,nfsvers=2 1 2" >> /etc/fstab
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Then set the file permission and specify the script in **postscripts** attribute of hypervisor node definition: ::
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chmod 755 /install/postscripts/mountvms
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chdef kvmhost1 -p postscripts=mountvms
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#. Provision the hypervisor node with the PowerKVM osimage ::
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nodeset kvmhost1 osimage=pkvm3.1-ppc64le-install-compute
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rpower kvmhost1 boot
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Create network bridge on hypervisor
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------------------------------------
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To launch VMs, a network bridge must be created on the PowerKVM hypervisors.
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If the hypervisor is provisioned successfully according to the steps described above, a network bridge will be created and attached to a physical interface. This can be checked by running ``brctl show`` on the hypervisor to show the network bridge information, please make sure a network bridge has been created and configured according to the parameters passed to postscript "xHRM" ::
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# brctl show
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bridge name bridge id STP enabled interfaces
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br0 8000.000000000000 no eth0
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If the network bridge is not created or configured successfully, please run "xHRM" with **updatenode** on managememt node to create it manually:::
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updatenode kvmhost1 -P "xHRM bridgeprereq eth0:br0"
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.. [1] Every standard libvirt installation provides NAT based connectivity to virtual machines out of the box using the "virtual bridge" interfaces (virbr0, virbr1, etc) Those will be created by default.
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