AN!CDB - Cluster Dashboard
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AN!Wiki :: AN!CDB - Cluster Dashboard |
AN!CDB, the Alteeve's Niche! Cluster Dashboard, is a management tool for clusters built following the 2-Node Red Hat KVM Cluster Tutorial.
It's first and foremost goal is to be extremely easy to use. No special skills or understanding of HA is required!
To achieve this ease of use, the cluster must be built to fairly specific requirements. Simplicity of use requires many assumptions be made.
AN!CDB provides;
- A single view of all cluster components and their current status.
- Control of the cluster nodes. Nodes can be:
- Powered On, Powered Off and Fenced
- Join to and withdrawn from the cluster
- Control of the virtual servers. Servers can be:
- Booted up, gracefully shut down and forced off
- Migrated between nodes
- Create, modify and delete servers;
- Create and upload installation and driver media
- Provision new servers, installing from media just like bare-iron servers
- Insert and Eject CD/DVD images
- Change allocated RAM and CPUs
- Delete servers that are no longer needed.
- Control of the cluster nodes. Nodes can be:
AN!CDB is designed to run on a machine outside of the cluster. The only customization needed is for the cluster name and the name of the nodes be added to the program. Once done, AN!CDB will collect and cache everything needed to control the cluster, even when both nodes are offline.
Installation
Installing AN!CDB is very easy now. The instructions are at the page below;
Using AN!CDB
Installing Server Operating Systems
KVM/QEMU maintained list of tested guest OS.
Windows 7
Windows 7 Professional has a limit of two sockets. The hypervisor presents each core as a socket, so Windows 7 will only use up to two cores.
Solaris 11
There is a harmless but verbose bug when using Solaris 11. You will see errors like:
WARNING: /pci@0,0/pci1af4,1100@1,2 (uhci0): No SOF interrupts have been received
, this USB UHCI host controller is unusable
Ignore this until the install is complete. Once the OS is installed, run:
rem_drv uhci
The errors will no longer appear.
Solution found here.
ASUS EeeBox Specific Notes
This section is mainly for our use, but it might prove useful to anyone looking to use the same hardware for the cluster monitor machine.
Model EB1033
BIOS
Press <F2> at boot to enter setup.
- Advanced > APM > Resore AC Power Loss = Last State
- Advanced > Onboard Devices Configuration > Onboard WLAN = Disabled
- Advanced > Onboard Devices Configuration > Onboard Audio = Disabled
- Boot > Full Screen Logo = Disabled
Save and exit. You can now install the OS via PXE. If you plan to leave this machine on a network with an existing PXE server, be sure the change the boot priority to put PXE at the bottom of the list after you finish the install.
OS Install Notes
The internal hard drives shows up as /dev/sdb, so update any kickstart scripts you use accordingly.
Once a minimal OS install is complete, run, follow these tutorials;
Model EB1021
BIOS
Press <F2> at boot to enter setup.
- Advanced > ACPI Settings > Enable Hibernation = Disabled
- Advanced > ACPI Settings > ACPI Sleep State = Suspend Disabled
- Advanced > Onboard Devices Configuration > Realtek PXE OPROM = Enables
- Advanced > South Bridge > SB SATA Configuration > OnChip SATA Type = AHCI
- Advanced > APM > Restore AC Power Loss = Last State
Save, reboot and re-enter the BIOS (needed to add 'PXE boot' to the boot options).
- Boot > Setup Prompt Timeout = 5
- Boot > Full Screen Logo = Disabled
- Boot > Boot Option #1 = Realtek PXE B02 D00
Save and exit. You can now install the OS via PXE. If you plan to leave this machine on a network with an existing PXE server, be sure the change the boot priority to put PXE at the bottom of the list after you finish the install.
OS Install Notes
The internal hard drives shows up as /dev/sdb, so update any kickstart scripts you use accordingly.
Once a minimal OS install is complete, run, follow these tutorials;
Setting Up PXE To Support The Nodes
We will offer two types of installers via the cluster monitor; Rebuilt existing nodes and build generic nodes.
- The first will include backups of the entire target machine.
- The later will not setup the target's network or SSH.
random notes:
- Mount the ISO on boot.
echo /var/www/html/c6/x86_64/iso/CentOS-6.3-x86_64-bin-DVD1.iso /var/www/html/c6/x86_64/img/ auto loop 0 0 >> /etc/fstab
- Show full path at the console prompt.
echo export PS1='\h:\w\$ ' >> ~/.bashrc
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