Do note that for Red Hat Enterprise Virtualization you must attach a directory server to the Manager using the Domain Management Tool, engine-manage-domains. This configuration sis for RHEV 3.5
Active Directory
Identity Management (IdM)
Red Hat Directory Server 9 (RHDS 9)
OpenLDAP

# rhevm-manage-domains add --domain=your_active_directory_domain --user=spmstest --provider=ad

Restart the ovirt-engine

# service ovirt-engine restart

One of the best ways to improve the performance of Microsoft Windows guest is to use paravirtualised devices and drivers for KVM in the guests. This provides close to bare performance (up to 95%). These drivers are provided by the virtio-win RPM packages in the RHEL.

1. The virtio-win packages can be found on RHEL server /usr/share/virtio-win/

# ls -l /usr/share/virtio-win/
drwxr-xr-x. 4 root root      4096 Oct 13 10:24 drivers
drwxr-xr-x. 2 root root      4096 Oct 13 10:24 guest-agent
-rw-r--r--. 1 root root   2949120 May 29  2014 virtio-win-1.7.1_amd64.vfd
-rw-r--r--. 1 root root 149004288 May 29  2014 virtio-win-1.7.1.iso
-rw-r--r--. 1 root root   2949120 May 29  2014 virtio-win-1.7.1_x86.vfd
lrwxrwxrwx. 1 root root        26 Oct 13 10:24 virtio-win_amd64.vfd -> virtio-win-1.7.1_amd64.vfd
lrwxrwxrwx. 1 root root        20 Oct 13 10:24 virtio-win.iso -> virtio-win-1.7.1.iso
lrwxrwxrwx. 1 root root        24 Oct 13 10:24 virtio-win_x86.vfd -> virtio-win-1.7.1_x86.vfd

You may want to add these images to the ISO Library, you can attach the virtio-drivers-*.vfd image to the virtual floppy drier beofre manually installing Windows

2. The rhev-tools-setup.iso image found in the usr/share/rhev-guest-tools-iso

# ls -l /usr/share/rhev-guest-tools-iso
-rw-r--r--. 1 root root    177272 Jul 29 16:30 LICENSES
-rw-r--r--. 1 root root 350181376 Jul 29 16:30 RHEV-toolsSetup_3.4_9.iso
lrwxrwxrwx. 1 root root        57 Oct 13 10:23 rhev-tools-setup.iso -> /usr/share/rhev-guest-tools-iso/RHEV-toolsSetup_3.4_9.iso
-rw-r--r--. 1 root root       924 Jul 29 16:30 SOURCES

3. Upload drivers and tools to the ISO Storage Domain

# rhevm-iso-uploader -u admin@internal list 
Please provide the REST API password for the admin@internal oVirt Engine user (CTRL+D to abort):
ISO Storage Domain Name   | Datacenter                | ISO Domain Status
dmn_ixora_iso_vol         | RH_Resource               | active

# rhevm-iso-uploader -u admin@internal --iso-domain=dmn_ixora_iso_vol upload  /usr/share/virtio-win/virtio-win-1.7.1_x86.vfd /usr/share/rhev-guest-tools-iso/rhev-tools-setup.iso
Please provide the REST API password for the admin@internal oVirt Engine user (CTRL+D to abort):

4. Create the new VM using the RHEV Manager

Remember to click the “Run Once”
Under the “Boot Option”,
– Attached the virtio-win-1.7.1_amd.vfd to the floppy
– Attached the MS Windows 7 ISO to the CD

5. Update Ethernet Drivers, PCI Simple Communication Controller by attaching the RH

6. Once you have booted to Windows 7, go to Device Manager and run an update for the missing Ethernet, storage controller

You should see
– Red Hat VirtIO SCSI controller,
– Red Hat VirtIO SCSI pass-through controller
– Red Hat VirtIO Ethernet Adapter

A Constant Time Stamp Counter is included in more recent Intel Processors (TSC) to reads at the processor’s maximum rate regardless of the actual CPU running rate. While this makes time keeping more consistent, but it can skew benchmarks, where a certain amount of spin-up time is spent at a lower clock rate before the OS switches the processor to the higher rate. For more information on Time Stamp Counter, do look at Time Stamp Counter (wikipedia)

To check whether your CPU support TSC, you can issue the command

# grep -q constant_tsc /proc/cpuinfo && echo "Constant TSC detected" || echo "No Constant TSC Detected"

Logical Networks allow segregation of different types of traffic. According to Red Hat Training Manual, it is recommended to have 3 types of network

1. Management Network – Network to connect hypervisor (RHEV-H) nodes to the RHEV Manager
2. Storage Network – Network to connect RHEV-H  to NFS and iSCSI. If you are using FC, there is no need to create a separate network since it is using SAN
3. Public Network –  Connect the Gateway Router, the RHEV-M systems and RHEV-H Nodes

Configure Logical Networks

Data Centre > Networks > New Loginal Networks

Configure Network Mac Address Pool

1. View Current Settings

# rhevm-config -g MacPoolRanges
MacPoolRanges: 00:1a:4a:9f:7e:00-00:1a:4a:9f:7e:ff version: general

2. Set the Mac range to 52:54:00:56:00:01 – 52:54:00:56:00:FF

# rhevm-config -s MacPoolRanges=52:54:00:56:00:01-52:54:00:56:00:FF

3. Restart ovirt-engine engine

# service ovirt-engine restart

By default, SPICE graphic server somehow by default uses the management network to display the console. Usually the management network is not visible to the users.

For RHEV 3.4, this can be easily resolve on the RHEV Manager console

1. Portal > Networks
2. Click on the Network you wish SPICE graphic Server to display on
3. Click “Manage Network”
4. Click “Display Network”

Once configured. Remember to REBOOT all the VMs to activate the changes

The Log Collector Utility for RHEV 3 is located in /usr/bin/rhevm-log-collector and is provided by the rhevm-log-collector package installed on the RHEV manager system.

1. To collect all the information, use command

# engine-log-collector
INFO: Gathering oVirt Engine information...
INFO: Gathering PostgreSQL the oVirt Engine database and log files from localhost...
Please provide the REST API password for the admin@internal oVirt Engine user (CTRL+D to skip):
About to collect information from 1 hypervisors. Continue? (Y/n): y
INFO: Gathering information from selected hypervisors...
INFO: collecting information from 192.168.50.56
INFO: finished collecting information from 192.168.50.56
Creating compressed archive...

2. To collect information from selected hosts ending with ending in .11 and .15

# engine-log-collector --hosts=*.11,*.15

3. To collect information from the RHEV-M only

# engine-log-collector --no-hypervisors

References

1. https://access.redhat.com/solutions/61546

This Common Administrative Commands Poster from Red Hat for RHEL and CentOS 5,6,7  is something l really appreciate as a system administrator. Read it for yourself and you will see what it meant.

1. RHEL 5 6 7 Administrative Commands Cheatsheet

The table below describes the settings of a data center as displayed in the New Data Center and Edit Data Center windows. Invalid entries are outlined in orange when you click OK, prohibiting the changes being accepted. In addition, field prompts indicate the expected values or range of values.

Figure 1: RHEVM Portal –

Figure 2: RHEVM – Adding New Data Centre

Details on each items