Install MONGODB 3.4 On LINUX 6

a)yum install cyrus-sasl cyrus-sasl-plain cyrus-sasl-gssapi krb5-libs libcurl libpcap net-snmp openldap openssl
b)Download Mongo DB  & Extract The TAR
cd $HOME
curl -O https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-3.4.4.tgz
cd /mongo/
tar -zxvf /home/mongo/mongodb-linux-x86_64-3.4.4.tgz
cp -R -n mongodb-linux-x86_64-3.4.4/ mongodb

c)Add the PATH in /home/mongo/.bash_profile
PATH=/mongo/mongodb/bin:$PATH

d) Create the datafile folder /mongo/data. If we dont specify dbpath ,it will try to  use the default value /data/db.

e)Start the Mongo DB.Run the mongod process at the system prompt.

mongod --dbpath /mongo/data --logpath /tmp/mongo.log --logappend --rest --fork

--dbpath -> Path to our datafiles.
--logpath -->Log file Path
--logappend --> Appending log content to the existing log.
--rest -->Which will enable http interface to the port 28017(default).We can  access it http://localhost:28017
--fork --> It will create the child process and run in background.

     
If we use above command ,datafile from all our databases will be under /mongo/data. If we want to split the datafiles based on database,we have to
specify the parameter  directoryperdb.It will create sub folder with dbname under dbpath.


Ex: mongod --dbpath /mongo/new_data --logpath /tmp/mongo.log --logappend --rest --directoryperdb


[mongo@r12 new_data]$ ls -ld *
drwxrwxr-x 2 mongo mongo  4096 Jun 10 12:38 admin
drwxrwxr-x 2 mongo mongo  4096 Jun 10 13:49 diagnostic.data
drwxrwxr-x 2 mongo mongo  4096 Jun 10 12:38 journal
drwxrwxr-x 2 mongo mongo  4096 Jun 10 12:38 local