Instalación MongoDB

Instalar el repo del mongodb den /etc/yum.repos.d

mongodb.repo

[mongodb-org-3.6]
name=MongoDB Repository
baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.6/x86_64/
gpgcheck=1
enabled=1
gpgkey=https://www.mongodb.org/static/pgp/server-3.6.asc

Una vez instalado se puede hacer el yum del mongodb-org y este ya instalará todas las dependencias:

yum install mongodb-org (instalar las 4 dependencias con el server, el tools y el cli) 

Por último copiar el mongodb.conf en el /etc: Mongodb.conf

# mongod.conf
# for documentation of all options, see:
#   http://docs.mongodb.org/manual/reference/configuration-options/
# where to write logging data.
systemLog:
 destination: file
 logAppend: true
 path: /var/log/mongodb/mongod.log
# Where and how to store data.
storage:
 dbPath: /var/lib/mongo
 journal:
   enabled: true
#  engine:
#  mmapv1:
#  wiredTiger:
# how the process runs
processManagement:
 fork: true  # fork and run in background
 pidFilePath: /var/run/mongodb/mongod.pid  # location of pidfile
 timeZoneInfo: /usr/share/zoneinfo
# network interfaces
net:
 port: 27017
 bindIp: 127.0.0.1  # Listen to local interface only, comment to listen on all interfaces.
security:
 authorization: enabled
#operationProfiling:
#replication:
#sharding:
## Enterprise-Only Options
#auditLog:
#snmp: