Debian缺省禁止远程连接mysql。
解决办法：
vi /etc/mysql/my.cnf
注释掉 bind-address = 127.0.0.1

Debian 下解决 ssh, mysql 等连接很慢的问题

解决办法：
vi /etc/nsswitch.conf
将下面这行：
hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4
改为：
hosts: files dns
重启机器，或重启服务：
sudo /etc/init.d/mysql restart
sudo /etc/init.d/ssh restart

Debian 下解决 apt-get update 出现 “There is no public key…” 错误的问题

出错信息：
There is no public key available for the following key IDs: 4D270D06F42584E6
You may want to run apt-get update to correct these problems.
解决办法：
apt-get install debian-keyring debian-archive-keyring
apt-key update

Debian缺省禁止远程连接mysql。
解决办法：
vi /etc/mysql/my.cnf
注释掉 bind-address = 127.0.0.1

Debian 下解决 ssh, mysql 等连接很慢的问题

解决办法：
vi /etc/nsswitch.conf
将下面这行：
hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4
改为：
hosts: files dns
重启机器，或重启服务：
sudo /etc/init.d/mysql restart
sudo /etc/init.d/ssh restart

Debian 下解决 apt-get update 出现 “There is no public key…” 错误的问题

出错信息：
There is no public key available for the following key IDs: 4D270D06F42584E6
You may want to run apt-get update to correct these problems.
解决办法：
apt-get install debian-keyring debian-archive-keyring
apt-key update