KVM : Basic Operation for VM2024/11/05 |
This is the Basic Operation for Virtual Machines.
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[1] | Start Virtual Machine. |
# Start Virtual Machine [fedora41] [root@dlp ~]# virsh start fedora41 Domain fedora41 started # start and connect to console of [fedora41] [root@dlp ~]# virsh start fedora41 --console Domain fedora41 started Connected to domain fedora41 |
[2] | Stop Virtual Machine. |
# Stop Virtual Machine [fedora41] [root@dlp ~]# virsh shutdown fedora41 Domain fedora41 is being shutdown # Stop Virtual Machine [fedora41] forcely [root@dlp ~]# virsh destroy fedora41 Domain fedora41 destroyed |
[3] | Set auto-start for Virtual Machines. |
# Enable auto-start for [fedora41] [root@dlp ~]# virsh autostart fedora41 Domain fedora41 marked as autostarted # Disable auto-start for [fedora41] [root@dlp ~]# virsh autostart --disable fedora41 Domain fedora41 unmarked as autostarted |
[4] | List all Virtual Machines. |
# List all active Virtual Machines [root@dlp ~]# virsh list Id Name State ---------------------------------------- 2 fedora41 running # List all Virtual Machines included inactives [root@dlp ~]# virsh list --all Id Name State ---------------------------------------- - fedora41 shut off - template shut off - win2k25 shut off |
[5] | Switch console, Move to GuestOS to HostOS with Ctrl + ] key. Move to HostOS to GuestOS with a command [virsh console (name of virtual machine)]. |
# connect to [fedora41] [root@dlp ~]# virsh console fedora41 Connected to domain fedora41 Escape character is ^] # Enter key Fedora Linux 41 (Server Edition) Kernel 6.11.4-301.fc41.x86_64 on an x86_64 (ttyS0) Web console: https://localhost:9090/ or https://10.0.0.218:9090/ localhost login: # just switched on Guest Password: |
[6] | For Other options below, there are many options, try to verify them. |
[root@dlp ~]#
virsh --help virsh [options]... [<command_string>] virsh [options]... <command> [args...] options: -c | --connect=URI hypervisor connection URI -d | --debug=NUM debug level [0-4] -e | --escape <char> set escape sequence for console -h | --help this help -k | --keepalive-interval=NUM keepalive interval in seconds, 0 for disable -K | --keepalive-count=NUM number of possible missed keepalive messages -l | --log=FILE output logging to file -q | --quiet quiet mode -r | --readonly connect readonly -t | --timing print timing information -v short version -V long version --version[=TYPE] version, TYPE is short or long (default short) commands (non interactive mode): Domain Management (help keyword 'domain') attach-device attach device from an XML file attach-disk attach disk device attach-interface attach network interface autostart autostart a domain blkdeviotune Set or query a block device I/O tuning parameters. blkiotune Get or set blkio parameters blockcommit Start a block commit operation. blockcopy Start a block copy operation. blockjob Manage active block operations blockpull Populate a disk from its backing image. blockresize Resize block device of domain. change-media Change media of CD or floppy drive console connect to the guest console cpu-stats show domain cpu statistics create create a domain from an XML file define define (but don't start) a domain from an XML file desc show or set domain's description or title destroy destroy (stop) a domain detach-device detach device from an XML file detach-device-alias detach device from an alias detach-disk detach disk device detach-interface detach network interface domdisplay domain display connection URI domfsfreeze Freeze domain's mounted filesystems. domfsthaw Thaw domain's mounted filesystems. domfsinfo Get information of domain's mounted filesystems. domfstrim Invoke fstrim on domain's mounted filesystems. domhostname print the domain's hostname domid convert a domain name or UUID to domain id domif-setlink set link state of a virtual interface domiftune get/set parameters of a virtual interface domjobabort abort active domain job domjobinfo domain job information domlaunchsecinfo Get domain launch security info domsetlaunchsecstate Set domain launch security state domname convert a domain id or UUID to domain name domrename rename a domain dompmsuspend suspend a domain gracefully using power management functions dompmwakeup wakeup a domain from pmsuspended state domuuid convert a domain name or id to domain UUID domxml-from-native Convert native config to domain XML domxml-to-native Convert domain XML to native config dump dump the core of a domain to a file for analysis dumpxml domain information in XML edit edit XML configuration for a domain get-user-sshkeys list authorized SSH keys for given user (via agent) inject-nmi Inject NMI to the guest iothreadinfo view domain IOThreads iothreadpin control domain IOThread affinity iothreadadd add an IOThread to the guest domain iothreadset modifies an existing IOThread of the guest domain iothreaddel delete an IOThread from the guest domain send-key Send keycodes to the guest send-process-signal Send signals to processes lxc-enter-namespace LXC Guest Enter Namespace managedsave managed save of a domain state managedsave-remove Remove managed save of a domain managedsave-edit edit XML for a domain's managed save state file managedsave-dumpxml Domain information of managed save state file in XML managedsave-define redefine the XML for a domain's managed save state file memtune Get or set memory parameters perf Get or set perf event metadata show or set domain's custom XML metadata migrate migrate domain to another host migrate-setmaxdowntime set maximum tolerable downtime migrate-getmaxdowntime get maximum tolerable downtime migrate-compcache get/set compression cache size migrate-setspeed Set the maximum migration bandwidth migrate-getspeed Get the maximum migration bandwidth migrate-postcopy Switch running migration from pre-copy to post-copy numatune Get or set numa parameters qemu-attach QEMU Attach qemu-monitor-command QEMU Monitor Command qemu-monitor-event QEMU Monitor Events qemu-agent-command QEMU Guest Agent Command guest-agent-timeout Set the guest agent timeout reboot reboot a domain reset reset a domain restore restore a domain from a saved state in a file resume resume a domain save save a domain state to a file save-image-define redefine the XML for a domain's saved state file save-image-dumpxml saved state domain information in XML save-image-edit edit XML for a domain's saved state file schedinfo show/set scheduler parameters screenshot take a screenshot of a current domain console and store it into a file set-lifecycle-action change lifecycle actions set-user-sshkeys manipulate authorized SSH keys file for given user (via agent) set-user-password set the user password inside the domain setmaxmem change maximum memory limit setmem change memory allocation setvcpus change number of virtual CPUs shutdown gracefully shutdown a domain start start a (previously defined) inactive domain suspend suspend a domain ttyconsole tty console undefine undefine a domain update-device update device from an XML file update-memory-device update memory device of a domain vcpucount domain vcpu counts vcpuinfo detailed domain vcpu information vcpupin control or query domain vcpu affinity emulatorpin control or query domain emulator affinity vncdisplay vnc display guestvcpus query or modify state of vcpu in the guest (via agent) setvcpu attach/detach vcpu or groups of threads domblkthreshold set the threshold for block-threshold event for a given block device or it's backing chain element guestinfo query information about the guest (via agent) domdirtyrate-calc Calculate a vm's memory dirty rate dom-fd-associate associate a FD with a domain domdisplay-reload Reload domain's graphics display certificates Domain Monitoring (help keyword 'monitor') domblkerror Show errors on block devices domblkinfo domain block device size information domblklist list all domain blocks domblkstat get device block stats for a domain domcontrol domain control interface state domif-getlink get link state of a virtual interface domifaddr Get network interfaces' addresses for a running domain domiflist list all domain virtual interfaces domifstat get network interface stats for a domain dominfo domain information dommemstat get memory statistics for a domain domstate domain state domstats get statistics about one or multiple domains domtime domain time list list domains Domain Events (help keyword 'events') event Domain Events Host and Hypervisor (help keyword 'host') allocpages Manipulate pages pool size capabilities capabilities cpu-baseline compute baseline CPU cpu-compare compare host CPU with a CPU described by an XML file cpu-models CPU models domcapabilities domain capabilities freecell NUMA free memory freepages NUMA free pages hostname print the hypervisor hostname hypervisor-cpu-baseline compute baseline CPU usable by a specific hypervisor hypervisor-cpu-compare compare a CPU with the CPU created by a hypervisor on the host maxvcpus connection vcpu maximum node-memory-tune Get or set node memory parameters nodecpumap node cpu map nodecpustats Prints cpu stats of the node. nodeinfo node information nodememstats Prints memory stats of the node. nodesevinfo node SEV information nodesuspend suspend the host node for a given time duration sysinfo print the hypervisor sysinfo uri print the hypervisor canonical URI version show version Checkpoint (help keyword 'checkpoint') checkpoint-create Create a checkpoint from XML checkpoint-create-as Create a checkpoint from a set of args checkpoint-delete Delete a domain checkpoint checkpoint-dumpxml Dump XML for a domain checkpoint checkpoint-edit edit XML for a checkpoint checkpoint-info checkpoint information checkpoint-list List checkpoints for a domain checkpoint-parent Get the name of the parent of a checkpoint Interface (help keyword 'interface') iface-begin create a snapshot of current interfaces settings, which can be later committed (iface-commit) or restored (iface-rollback) iface-bridge create a bridge device and attach an existing network device to it iface-commit commit changes made since iface-begin and free restore point iface-define define an inactive persistent physical host interface or modify an existing persistent one from an XML file iface-destroy destroy a physical host interface (disable it / "if-down") iface-dumpxml interface information in XML iface-edit edit XML configuration for a physical host interface iface-list list physical host interfaces iface-mac convert an interface name to interface MAC address iface-name convert an interface MAC address to interface name iface-rollback rollback to previous saved configuration created via iface-begin iface-start start a physical host interface (enable it / "if-up") iface-unbridge undefine a bridge device after detaching its device(s) iface-undefine undefine a physical host interface (remove it from configuration) Network Filter (help keyword 'filter') nwfilter-define define or update a network filter from an XML file nwfilter-dumpxml network filter information in XML nwfilter-edit edit XML configuration for a network filter nwfilter-list list network filters nwfilter-undefine undefine a network filter nwfilter-binding-create create a network filter binding from an XML file nwfilter-binding-delete delete a network filter binding nwfilter-binding-dumpxml network filter information in XML nwfilter-binding-list list network filter bindings Networking (help keyword 'network') net-autostart autostart a network net-create create a network from an XML file net-define define an inactive persistent virtual network or modify an existing persistent one from an XML file net-desc show or set network's description or title net-destroy destroy (stop) a network net-dhcp-leases print lease info for a given network net-dumpxml network information in XML net-edit edit XML configuration for a network net-event Network Events net-info network information net-list list networks net-metadata show or set network's custom XML metadata net-name convert a network UUID to network name net-start start a (previously defined) inactive network net-undefine undefine a persistent network net-update update parts of an existing network's configuration net-uuid convert a network name to network UUID net-port-list list network ports net-port-create create a network port from an XML file net-port-dumpxml network port information in XML net-port-delete delete the specified network port Node Device (help keyword 'nodedev') nodedev-create create a device defined by an XML file on the node nodedev-destroy destroy (stop) a device on the node nodedev-detach detach node device from its device driver nodedev-dumpxml node device details in XML nodedev-list enumerate devices on this host nodedev-reattach reattach node device to its device driver nodedev-reset reset node device nodedev-event Node Device Events nodedev-define Define or modify a device by an xml file on a node nodedev-undefine Undefine an inactive node device nodedev-start Start an inactive node device nodedev-autostart autostart a defined node device nodedev-info node device information nodedev-update Update a active and/or inactive node device Secret (help keyword 'secret') secret-define define or modify a secret from an XML file secret-dumpxml secret attributes in XML secret-event Secret Events secret-get-value Output a secret value secret-list list secrets secret-set-value set a secret value secret-undefine undefine a secret Snapshot (help keyword 'snapshot') snapshot-create Create a snapshot from XML snapshot-create-as Create a snapshot from a set of args snapshot-current Get or set the current snapshot snapshot-delete Delete a domain snapshot snapshot-dumpxml Dump XML for a domain snapshot snapshot-edit edit XML for a snapshot snapshot-info snapshot information snapshot-list List snapshots for a domain snapshot-parent Get the name of the parent of a snapshot snapshot-revert Revert a domain to a snapshot Backup (help keyword 'backup') backup-begin Start a disk backup of a live domain backup-dumpxml Dump XML for an ongoing domain block backup job Storage Pool (help keyword 'pool') find-storage-pool-sources-as find potential storage pool sources find-storage-pool-sources discover potential storage pool sources pool-autostart autostart a pool pool-build build a pool pool-create-as create a pool from a set of args pool-create create a pool from an XML file pool-define-as define a pool from a set of args pool-define define an inactive persistent storage pool or modify an existing persistent one from an XML file pool-delete delete a pool pool-destroy destroy (stop) a pool pool-dumpxml pool information in XML pool-edit edit XML configuration for a storage pool pool-info storage pool information pool-list list pools pool-name convert a pool UUID to pool name pool-refresh refresh a pool pool-start start a (previously defined) inactive pool pool-undefine undefine an inactive pool pool-uuid convert a pool name to pool UUID pool-event Storage Pool Events pool-capabilities storage pool capabilities Storage Volume (help keyword 'volume') vol-clone clone a volume. vol-create-as create a volume from a set of args vol-create create a vol from an XML file vol-create-from create a vol, using another volume as input vol-delete delete a vol vol-download download volume contents to a file vol-dumpxml vol information in XML vol-info storage vol information vol-key returns the volume key for a given volume name or path vol-list list vols vol-name returns the volume name for a given volume key or path vol-path returns the volume path for a given volume name or key vol-pool returns the storage pool for a given volume key or path vol-resize resize a vol vol-upload upload file contents to a volume vol-wipe wipe a vol Virsh itself (help keyword 'virsh') cd change the current directory echo echo arguments. Used for internal testing. exit quit this interactive terminal help print help pwd print the current directory quit quit this interactive terminal connect (re)connect to hypervisor (specify help <group> for details about the commands in the group) (specify help <command> for details about the command) |
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