오류 2002(HY000): 'xx.xxx.xxx.xxx'에서 MySQL 서버에 연결할 수 없습니다(115).

memsql에 연결하고 싶지만 연결하려고 하면 연결할 수 없으며 오류가 발생합니다.

mysql -u root -h 127.0.0.1 -P 3306 --prompt="memsql> "
ERROR 2002 (HY000): Can't connect to MySQL server on '127.0.0.1' (115)

localhost의 경우에도 설치하려고 하면 동일한 오류가 발생합니다.

sudo apt-get install mysql-server mysql-client

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package mysql-client 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

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
E: Package 'mysql-client' has no installation candidate

제안을 주시면 감사하겠습니다.