pg_stat_statements extension in Postgres

This is how I resolved my issue:

I ssh’d onto the pg server:

> fly ssh console -a chat-pg

then ran a stolon update similar to kurt’s above

> stolonctl update --patch "{\"pgParameters\": {\"shared_preload_libraries\": \"pg_stat_statements\"}}"

afterwards, the config did show as updated:

> fly postgres config view -a chat-pg

Update available 0.0.441 -> 0.0.442.
Run "fly version update" to upgrade.
NAME                      	VALUE                   	UNIT	DESCRIPTION                                                                                	PENDING RESTART
...
shared-preload-libraries  	 -> (pg_stat_statements)	    	Lists shared libraries to preload into server.                                             	true
...

Some changes are awaiting a restart!
To apply changes, run: `fly postgres restart --app chat-pg`

Then I followed the instructions in that last command to restart the server. Done!