ERROR Failed to connect socket to '/var/run/libvirt/libvirt-sock'
virshlisterror: failed to connect to the hypervisor
error: no valid connection
error: Failed to connect socket to '/var/run/libvirt/libvirt-sock': No such file or directory
解决办法：
# yum install -y avahi
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package avahi.x86_64 0:0.6.31-15.el7_2.1 will be installed
--> Processing Dependency: avahi-libs = 0.6.31-15.el7_2.1 for package: avahi-0.6.31-15.el7_2.1.x86_64
--> Running transaction check
---> Package avahi-libs.x86_64 0:0.6.31-15.el7 will be updated
--> Processing Dependency: avahi-libs = 0.6.31-15.el7 for package: avahi-autoipd-0.6.31-15.el7.x86_64
---> Package avahi-libs.x86_64 0:0.6.31-15.el7_2.1 will be an update
--> Running transaction check
---> Package avahi-autoipd.x86_64 0:0.6.31-15.el7 will be updated
---> Package avahi-autoipd.x86_64 0:0.6.31-15.el7_2.1 will be an update
--> Finished Dependency Resolution
Dependencies Resolved
======================================================================================================================================================================================
Package Arch Version Repository Size
======================================================================================================================================================================================
Installing:
avahi x86_64 0.6.31-15.el7_2.1 updates 263 k
Updating for dependencies:
avahi-autoipd x86_64 0.6.31-15.el7_2.1 updates 39 k
avahi-libs x86_64 0.6.31-15.el7_2.1 updates 61 k
Transaction Summary
======================================================================================================================================================================================
Install1 Package
Upgrade ( 2 Dependent packages)
Total download size: 363 k
Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
(1/3): avahi-0.6.31-15.el7_2.1.x86_64.rpm | 263 kB00:00:00
(2/3): avahi-libs-0.6.31-15.el7_2.1.x86_64.rpm |61 kB00:00:00
(3/3): avahi-autoipd-0.6.31-15.el7_2.1.x86_64.rpm |39 kB00:00:00
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 5.4 MB/s | 363 kB00:00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Updating : avahi-libs-0.6.31-15.el7_2.1.x86_64 1/5
Installing : avahi-0.6.31-15.el7_2.1.x86_64 2/5
Updating : avahi-autoipd-0.6.31-15.el7_2.1.x86_64 3/5
Cleanup : avahi-autoipd-0.6.31-15.el7.x86_64 4/5
Cleanup : avahi-libs-0.6.31-15.el7.x86_64 5/5
Verifying: avahi-0.6.31-15.el7_2.1.x86_64 1/5
Verifying: avahi-autoipd-0.6.31-15.el7_2.1.x86_64 2/5
Verifying: avahi-libs-0.6.31-15.el7_2.1.x86_64 3/5
Verifying: avahi-autoipd-0.6.31-15.el7.x86_64 4/5
Verifying: avahi-libs-0.6.31-15.el7.x86_64 5/5
Installed:
avahi.x86_64 0:0.6.31-15.el7_2.1
Dependency Updated:
avahi-autoipd.x86_64 0:0.6.31-15.el7_2.1 avahi-libs.x86_64 0:0.6.31-15.el7_2.1
Complete!
# systemctl restart libvirtd.service
error: Failed to connect socket to '/var/run/libvirt/libvirt-sock': No such file or directory
文件有可能存在，但是找不到(我的就是这样 明明有这个文件，还说找不到，ln -s // 也不行)
我是这样处理的，1我去换成ustc的源
sudo vi /etc/apt/sources.list
deb http://debian.ustc.edu.cn/debian stable main non-free contrib
deb-src http://debian.ustc.edu.cn/debian stable main non-free contrib
deb http://debian.ustc.edu.cn/debian proposed-updates main contrib non-free
deb-src http://debian.ustc.edu.cn/debian proposed-updates main contrib non-free
deb http://debian.ustc.edu.cn/debian-security stable/updates main
deb https://mirrors.ustc.edu.cn/ubuntu/ xenial main restricted universe multiverse
# deb-src https://mirrors.ustc.edu.cn/ubuntu/ xenial main main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
# deb-src https://mirrors.ustc.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
# deb-src https://mirrors.ustc.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ xenial-security main restricted universe multiverse
# deb-src https://mirrors.ustc.edu.cn/ubuntu/ xenial-security main restricted universe multiverse
(其他的源请自查)
2安装kvm
sudo apt-get install kvm
3卸载virt-manager .再安装一遍(可能是以前安装的少了什么东西)
sudo apt-get autoremove virt-manager
sudo apt-get install virt-manager
4去 /var/run/libvirt给 libvirt-socklibvirt-sock-ro virtlockd-sock 仨文件加权限 (据说 只加libvirt-sock 就行)
sudo chmod -R 777 libvirt-sock
sudo chmod -R 777 libvirt-sock-ro
sudo chmod -R 777 virtlockd-sock
5重启服务
service libvirtd restart
6 启动 virt-manager
来源：CSDN
原文：https://blog.csdn.net/timo1160139211/article/details/72848023
版权声明：本文为博主原创文章，转载请附上博文链接！ # systemctl start libvirtd.service
实际上就是没有启动libvirtd的服务，好尴尬。
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