如何通过 mongo shell 访问 mongodb 环境变量

Question

I've try to get env variables via mongo-initi.js and mongo docker-compose.yml, If it is possible to get mongodb docker containers env variable via mongo shell?

Answer 1

Which shell do you use? The legacy mongo shell (I prefer term "classic shell") or the new mongosh ?

In the new mongosh , it is easy. The mongos is a Node.js shell, simply use process.env

In legacy shell mongo you can use undocumented function _getEnv() or you pass environment variable in --eval , for example

mongo --eval "var my_var = '$MY_VAR';" ...

See How to pass environment variable to mongo script