3 Οκτωβρίου 2018 – Bytefreaks.net

Notes on how to connect from an external machine to a docker database in Google Compute Engine

A) Create a firewall rule in your VPC Network that allows you to connect to your database from outside the network: https://console.cloud.google.com/networking/firewalls/list

B) From your remote machine repair your database using mysqlcheck.

On Fedora you can install it by installing the MariaDB package as follows:

sudo dnf install mariadb -y;

The following command will automatically repair all databases and tables in that instance of MySQL, where of course the user has access:

mysqlcheck --host 45.37.15.225 --port 33061 --user admin --all-databases --auto-repair --password;

C) Edit the new firewall rule and either disable it or delete it for security.

To manually repair and optimize the core WordPress tables of your MySql (or MariaDB) database:

A) edit your wp-config.php and add

define('WP_ALLOW_REPAIR', true);

right before the line

/* That's all, stop editing! Happy blogging. */

B) Visit the following link (and replace example.com with the domain or the IP of your site installation)

https://example.com/wp-admin/maint/repair.php

C) Press the Repair and Optimize Database button and wait for some time (depending on the size of the core tables of your installation)

D) Once the above step is done, remove or comment out (by adding a # at the beginning of the line) the line:

define('WP_ALLOW_REPAIR', true);

You need to do this step to to prevent this page (which could potentially take a lot of resources) from being used by unauthorized users.