libvirt virsh domain命令解析(一)-优快云博客

本文介绍了libvirt的命令行工具virsh，特别是关注于domain命令，它代表虚拟机实例。文章列举了domain的基础命令，并提供了使用示例，包括查看设备参数、调整CPU权重、设置内存和CPU等操作。

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virsh是libvirt提供的命令行工具，了解virsh命令的功能，可以快速了解libvirt的主要功能及功能特性

这里首先介绍domain
domain 域，可以看做是一个虚拟机实例

通过 virsh -h 可以查看所有命令，能够看到每个命令的介绍信息（这里不做一一翻译）

# virsh -h

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 域，可看做一个虚拟机实例
基础命令：

 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)