yum install -y tigervnc tigervnc-server 安装vnc服务
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
省略了
One of the configured repositories failed (Unknown),
and yum doesn't have enough cached data to continue. At this point the only
safe thing yum can do is fail. There are a few ways to work "fix" this:
这里省略了
yum-config-manager --save --setopt=<repoid>.skip_if_unavailable=true
database disk image is malformed