virtualcontrol is a configuration and monitoring tool for QEMU/KVM instances on a linux box. virtualcontrol primarily uses the KVM command line tools to do its job. Apart from trivial functions like starting and stopping virtual machines, virtualcontrol also allows freezing/thawing virtual machines (snapshot including memory dump), KVM machine migration and advanced storage functions like HA and dedicated storage solutions (OpenSANd).
The main features are:
- Controls QEMU/KVM virtual machines
- Written entirely in Perl, uses command line tools shipped with KVM
- Allows easy configuration of large (bridged) IP networks connecting virtual machines
- Automatic restart of virtual machines, based on time of day or shutdown event
- Uses NBD in order to connect to OpenSANd, an open storage area network solution
- Integrated NBD proxy solution provides I/O statistics for each disk and allows to transparently survive temporary SAN disconnects
- HA available through VM migration and transparent SAN disk mirroring
VirtualControl command line interface |
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| Unix domain socket | |
VirtualControl agentEvery started QEMU/KVM instance gets its own VirtualControl controller process. |
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NBD proxyVirtualControl controlled QEMU/KVM machines use NBD (network block devices) in order to connect to disks. The NBD proxy provides the following features:
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QEMU/KVM |
| NBD network connection | |
OpenSANd server |
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