IT IS NOT A PLUGIN, ITS A PLACEHOLDERAPI EXPANSION
Put the file in /plugins/PlaceholderAPI/expansions
YAML:
mysql:
host: "127.0.0.1"
database: "database"
user: "username"
pass: "123456"
Commands:
/phis set (key) - Set a key to all servers
/phis del (key) - Delete a key from database.
Permission:
phis.admin - Permission to set or delete values.
How it works?
The addon is very useful to networks with multiple servers. You need set the same MySQL Settings to all your servers that will use the addon, then you can use the command to set a placeholder to all servers, example:
/phis set server_version 2.1.3
Then, in all your servers you can use the placeholder %phis_server_version% and it will return 2.1.3.