How to find MongoDB log file path

In this article, we will see How to find MongoDB log file path in Linux environment. There are different methods to find MongoDB log file path.

Method1: find MongoDB log file path using mongod.conf file:
By Default, MongoDB creates the log file at this path “/var/log/mongodb/mongodb.log”, if the log file is not found at this path, please check with the MongoDB config file.

more /etc/mongod.conf

systemLog:
  destination: file
  logAppend: true
  path: /var/log/mongodb/mongod.log

Method2: find MongoDB log file path using command:
The easiest way to find MongoDB log file path is using getCmdLineOpts command:

db.getSiblingDB("admin").runCommand({getCmdLineOpts:1})

 "systemLog" : {
                        "destination" : "file",
                        "logAppend" : true,
                        "path" : "/var/log/mongodb/mongod.log"
                }

So, in this article we have seen two methods to findout MongoDB log file path.