install mongoDB (child process failed, exited with error number 100)

Question

I tried to install mongoDB on my macbook air.

I\'ve downloaded zipped file from official website and extract that file and move to root directory. After that, under

Answer 1

It's because you probably didn't shutdown mongodb properly and you are not starting mongodb the right way. According your mongodb.config, you have dbpath = /mongodb/data/db - so I assume you created the repository /mongodb/data/db? Let me clarify all the steps.

1. TO START MONGODB

In your mongodb.config change the dbpath = /mongodb/data/db to dbpath = /data/db. On your terminal create the db repository by typing: mkdir /data/db. Now you have a repository - you can start your mongo.

To start mongo in the background type: mongod --dbpath /data/db --fork --logpath /dev/null.

• /data/db is the location of the db.
• --fork means you want to start mongo in the background - deamon.

• --logpath /dev/null means you don't want to log - you can change that by replacing /dev/null to a path like /var/log/mongo.log

  2. TO SHUTDOWN MONGODB

Connect to your mongo by typing: mongo and then use admin and db.shutdownServer(). Like explain in mongoDB

If this technique doesn't work for some reason you can always kill the process.

Find the mongodb process PID by typing: lsof -i:27017 assuming your mongodb is running on port 27017

Type kill , replace by the value you found the previous command.