当我在Kali Linux上安装MySQL时，这对我来说似乎是
sudo apt-get install mysql-server
sudo: unable to resolve host 127.0.0.1localhost: Name or service not known
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package mysql-server is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'mysql-server' has no installation candidate
请解决这个问题