I read everything in the documentation and use it what I found, but it doesn’t work. I tried use it in a docker container.
I installed all of the proposed package and set all of the must in the make configuration. But the plugin did not installed. And if I see correctly the config for the logger also did not loaded.
There’s a JSON logger plugin: janus_jsonlog.c File Reference
You need to pass --enable-json-logger when configuring Janus to build it. You’ll also need to tweak its configuration file to enable it and tell it where to save the file.
The general documentation is available here: Janus - General purpose WebRTC server
You can find out the command line options by passing -h when launching Janus. All properties available in configuration files are documented in the configuration files themselves.