Alex Blex Alex Blex - 2 months ago 17
MySQL Question

Vagrant port forwarding for Mysql

I am trying to setup port forwarding in Vagrantfile to connect to guest mysqld from host system, but get

reading initial communication packet
error.
Host: Yosemite, Guest: Trusty, vagrant 1.7.4

Vagrantfile(host):

config.vm.network "forwarded_port", guest: 80, host: 8080
config.vm.network "forwarded_port", guest: 3306, host: 3309


my.ini(guest):

bind-address = 127.0.0.1


8080 forwarding works like a charm.

mysql -h127.0.0.1 -uroot -p
from guest also works.

mysql -h127.0.0.1 -P 3309 -uroot -p
from host results with
reading initial communication packet
error.

When I telnet from host, the connection instantly closes:

$ telnet localhost 3309
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Connection closed by foreign host.


Port forwarding works when I ssh to vagrant box from host:

$ssh vagrant@127.0.0.1 -p 2222 -L3308:localhost:3306


Then I can connect from host
mysql -h127.0.0.1 -P3308 -uroot -p
without problems, which I use as a temporary workaround.

Answer

was finally able to make it work -

edit the /etc/mysql/my.cnf file and make sure, either

  • you have bind-address = 0.0.0.0
  • or you comment the line #bind-address ...

make sure to restart your mysql server after the change

$ sudo service mysql restart

Then you can connect from your host - so I first had an error like

$ mysql -h127.0.0.1 -P 3309 -uroot -p
Enter password:
ERROR 1130 (HY000): Host '172.16.42.2' is not allowed to connect to this MySQL server

so I came back to the guest and did

vagrant@precise64:~$ mysql -h127.0.0.1 -uroot -p
...
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'172.16.42.2' WITH GRANT OPTION;
Query OK, 0 rows affected (0.00 sec)

mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)

Then I had no issue to connect from the host machine

$ mysql -h127.0.0.1 -P 3309 -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 36
Server version: 5.5.44-0ubuntu0.12.04.1 (Ubuntu)