MySQL Remap Plugin¶
This plugin is deprecated as of v9.0.0, and should not be used! The issue is around the blocking APIs used here; If this functionality is needed, you will need to implement it using something non-blocking, such as REDIS.
This is a basic plugin for doing dynamic “remaps” from a database. It essentially rewrites the incoming request’s Host header / origin server connection to one retrieved from a database.
The generic proxying setup is the following:
UA ----> Traffic Server ----> Origin Server
Without the plugin a request like:
GET /path/to/something HTTP/1.1 Host: original.host.com
Ends up requesting
With this plugin enabled, you can easily change that to anywhere you desire. Imagine the many possibilities….
We have benchmarked the plugin with ab at about 9200 requests/sec (1.7k object) on a commodity hardware with a local setup of both, MySQL and Traffic Server local. Real performance is likely to be substantially higher, up to the MySQL’s max queries / second.
This plugin is only built if the configure option
is given at build time.
Import the default schema to a database you create:
mysql -u root -p -e "CREATE DATABASE mysql_remap;" # create a new database mysql -u root -p mysql_remap < schema/import.sql # import the provided schema
insert some interesting values in mysql_remap.hostname & mysql_remap.map
Traffic Server plugin configuration is done inside a global
The INI file should contain the following values:
[mysql_remap] mysql_host = localhost #default mysql_port = 3306 #default mysql_username = remap_user mysql_password = mysql_database = mysql_remap #default
To debug errors, start trafficserver manually using:
traffic_server -T "mysql_remap"
And resolve any errors or warnings displayed.