unix:virtualization:virtlib:quickreference
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| unix:virtualization:virtlib:quickreference [2022/07/19 19:18] – rodolico | unix:virtualization:virtlib:quickreference [2025/01/24 23:58] (current) – rodolico | ||
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| ====== virt-lib Quick Reference ====== | ====== virt-lib Quick Reference ====== | ||
| + | |||
| + | virtlib stores its configuration for each //domain// (virtual) in / | ||
| + | |||
| + | The xml files are, well, xml. The format is documented at https:// | ||
| ===== virt-top ===== | ===== virt-top ===== | ||
| Line 28: | Line 32: | ||
| * This will attach a new bridge to domain //domain//, using //bridge// defined on hypervisor, called vnet3 on the virtual, with the mac address set to whatever you use. | * This will attach a new bridge to domain //domain//, using //bridge// defined on hypervisor, called vnet3 on the virtual, with the mac address set to whatever you use. | ||
| * detach-interface //domain// --type bridge --mac 00: | * detach-interface //domain// --type bridge --mac 00: | ||
| + | * Attach/ | ||
| + | * virsh detach-disk router sda --config | ||
| + | * virsh attach-disk router / | ||
| * Remove virtual image (config file only)< | * Remove virtual image (config file only)< | ||
| * **change-media //name// //drive//** - Insert or Eject a CDROM | * **change-media //name// //drive//** - Insert or Eject a CDROM | ||
| Line 37: | Line 44: | ||
| This is actually not intuitive. I'm going to describe how to do this from a pretty complex setup with no GUI; adjust as needed. In this case, we need to boot the virtual myvirt from a gparted cdrom image located in / | This is actually not intuitive. I'm going to describe how to do this from a pretty complex setup with no GUI; adjust as needed. In this case, we need to boot the virtual myvirt from a gparted cdrom image located in / | ||
| - | Both assume the virtual has been turned | + | Both assume the virtual has been turned |
| - | ===== without manually editing configuration | + | Some people do not want to manually edit the XML used to configure the virtuals, others prefer it. Some things, like setting a boot menu with a realistic timeout appear to require it; I have not found a way to do it through the virsh command. |
| + | |||
| + | I use the --config flag a lot. If you use this flag, any changes you make are written to the config file and will persist across boots. | ||
| + | |||
| + | === without manually editing configuration === | ||
| - First, see if there is a cdrom installed. One simple way is to dump the xml and grep for cdrom< | - First, see if there is a cdrom installed. One simple way is to dump the xml and grep for cdrom< | ||
| - Once this is done and you have a cdrom, you should be able to tell which one it is with< | - Once this is done and you have a cdrom, you should be able to tell which one it is with< | ||
| + | - Mount your image on the CDROM | ||
| + | - If you have one and you know which drive it is<code bash> | ||
| + | - If you do not have a CDROM, use<code bash> | ||
| - | ===== I'm not afraid to edit the config | + | === I'm not afraid to edit the config === |
| - Edit the config file with <code bash> | - Edit the config file with <code bash> | ||
| - Look for something like //<disk type=' | - Look for something like //<disk type=' | ||
| Line 51: | Line 65: | ||
| - This will enable the boot menu, and have a wait of 5 seconds (5000 milliseconds) for you to choose. | - This will enable the boot menu, and have a wait of 5 seconds (5000 milliseconds) for you to choose. | ||
| - If you want, change the boot order by adding <code xml>< | - If you want, change the boot order by adding <code xml>< | ||
| + | |||
| + | === Starting the virtual === | ||
| + | - Start the virtual with <code bash> | ||
| + | - Immediately make the VNC connection (if you followed the manual edit, you have 5 seconds) | ||
| + | - When prompted, press ESC to choose the CDROM drive (assuming you didn't set it as the default) | ||
| + | === Cleanup === | ||
| + | Do the following if you want to remove the CDROM when you're done. Note: this is likely required if you set the CDROM as the primary boot device. | ||
| + | <code bash> | ||
| Line 235: | Line 257: | ||
| In my case, I had built a Windows domain without using virtio, and I wanted to change it. This was actually the simplest way I found to do it. | In my case, I had built a Windows domain without using virtio, and I wanted to change it. This was actually the simplest way I found to do it. | ||
| - | ==== Links ==== | + | |
| + | ===== Naming Network | ||
| + | |||
| + | to give a domain interface a static name when it is run, you can add the following to the interface definition. | ||
| + | <code xml>< | ||
| + | NOTE: the name must not begin with ' | ||
| + | https:// | ||
| + | <code xml> | ||
| + | < | ||
| + | <mac address=' | ||
| + | <source bridge=' | ||
| + | <target dev=' | ||
| + | <model type=' | ||
| + | <address type=' | ||
| + | </ | ||
| + | </ | ||
| + | |||
| + | You can now do things like <code bash> | ||
| + | |||
| + | ===== Adding USB Drive Image ===== | ||
| + | |||
| + | Building and using a USB Thumbdrive image is a little weird, but it can be done. See [[software: | ||
| + | |||
| + | ===== Links ===== | ||
| * https:// | * https:// | ||
| Line 242: | Line 287: | ||
| * https:// | * https:// | ||
| * https:// | * https:// | ||
| + | * https:// | ||
| + | |||
unix/virtualization/virtlib/quickreference.1658276323.txt.gz · Last modified: 2022/07/19 19:18 by rodolico