ARM架构的CentOS7使用virt-manager创建虚拟机提示max socket is 4095
ARM架构的CentOS7使用virt-manager创建虚拟机提示max socket is 4095
问题描述
ARM架构的CentOS7安装libvirt、qemu-kvm和virt-manager后，启动virt-manager后报错：Error polling connection 'qemu:///system': internal error: Socket 8442 can't be handled (max socket is 4095)
具体报错
Error polling connection 'qemu:///system': internal error: Socket 8442 can't be handled (max socket is 4095)
Traceback (most recent call last):
File "/usr/share/virt-manager/virtManager/engine.py", line 389, in _handle_tick_queue
conn.tick_from_engine(**kwargs)
File "/usr/share/virt-manager/virtManager/connection.py", line 1473, in tick_from_engine
raise e # pylint: disable=raising-bad-type
libvirtError: internal error: Socket 8442 can't be handled (max socket is 4095)
截图
系统信息
[root@localhost ~]# cat /etc/os-release
NAME="CentOS Linux"
VERSION="7 (AltArch)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (AltArch)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"
CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"
[root@localhost ~]#
图示
可以看到是ARM架构的CentOS7系统
情况复现
①新安装的ARM架构的CentOS7新机器，下载安装libvirt qemu-kvm virt-manager组件
yum install -y libvirt qemu-kvm virt-manager
②启动libvirtd
systemctl start libvirtd && systemctl enable libvirtd
③查看libvirtd的版本
libvirtd --version
可以看到是4.5.0版本
④启动virt-manager
virt-manager
这样就看到了之前提到的问题
原因
可能是libvirtd太旧了，需要升级一下
解决
yum install -y wget
wget https://libvirt.org/sources/libvirt-4.7.0.tar.xz --no-check-certificate
yum install -y gcc libnl-devel libxml2-devel yajl-devel device-mapper-devel libpciaccess-devel libnl3-devel netcf-devel gnutls gnutls-devel yajl-devel perl-ExtUtils-Embed AAVMF-20180508-6.gitee3198e672e2.el7.noarch
xz -d libvirt-4.7.0.tar.xz
tar -xvf libvirt-4.7.0.tar
cd libvirt-4.7.0
./configure --prefix=/usr --localstatedir=/var --sysconfdir=/etc
make -j
make install -j
ldconfig
libvirtd --version
可以看到右4.5.0升级到了4.7.0
重新启动libvirtd
systemctl daemon-reload
systemctl restart libvirtd
启动virt-manager查看，问题已经解决
virt-manager
总结
ARM架构的CentOS7使用virt-manager创建虚拟机提示max socket is 4095，解决该错误只需要升级libvirt到4.7.0即可，升级方式为手动编译
