TT_PRELOAD

[TarantoolBot]

Related dev. issue(s): tarantool/tarantool#7714

Product: Tarantool
Since: 2.11
Root document: https://www.tarantool.io/en/doc/latest/book/admin/instance_config/
SME: @ Totktonada

Details

A script file or a module may be specified in the TT_PRELOAD
environment variable to load before the main script. For example:

$ TT_PRELOAD=/path/to/foo.lua tarantool main.lua

The foo.lua script will be executed before main.lua.

$ TT_PRELOAD=foo.bar.baz tarantool main.lua

The foo.bar.baz module will be loaded before executing main.lua.

A value that ends with .lua is considered as a script file, otherwise
it is considered as a module name.

Several files or modules may be passed as a semicolon separated list:

$ TT_PRELOAD="/path/to/foo.lua;foo.bar.baz" tarantool main.lua

Don't forget quotes, a shell interprets a semicolon on its own.

Redundant (duplicated, leading, trailing) semicolons are ignored.

If something goes wrong at script/module execution, tarantool reports
the problem and exits.

A script receives a path to the file in ..., a module gets the module
name. arg is the same as for the main script.
Requested by @ Totktonada in tarantool/tarantool@435e5ef.