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[root@opmantek ~]# yum install mongodb-org

Provision MongoDB 3.2

Check what kinds of MongoDB configuration files are in /etc

[root@opmantek etc]# ls -l | grep mongo
-rw-r--r--   1 root root    1564 2015-09-11 10:00 mongod.conf
-rw-r--r--   1 root root     768 2017-02-02 02:07 mongod.conf.rpmnew

If there is one called mongodb.conf it is no longer necessary.  Please move this to /root to avoid any future confusion. 

Make a backup of the old mondgod.conf and copy the new rpm version over it.

[root@opmantek etc]# cp mongod.conf mongod.conf.backup

[root@opmantek etc]# cp mongod.conf.rpmnew mongod.conf

Provision MongoDB

Now make the following changes to mongod.conf

• Change the dbPath to /data/mongodb
• Provision wiredTiger (uncomment)

--snip

# Where and how to store data.
storage:
  dbPath: /data/mongodb
  journal:
    enabled: true
#  engine:
#  mmapv1:
wiredTiger:

--snip 

Delete temporary files associated with MongoDB

Remove any files in /tmp that look be be associated with MongoDB

If there is a mongod.pid file in /var/run/mongodb, then remove it.

Delete the contents of /data/mongodb and verify the group and owner of /data/mongodb is mongod.

[root@opmantek ~]# cd /data/mongodb
[root@opmantek mongodb]# rm -rf *

[root@opmantek mongodb]# cd ..

[root@opmantek data]# ls -l | grep mongodb
drwxr-xr-x 2 mongod mongod  4096 2017-04-05 17:42 mongodb

Start MongoDB Service

[root@opmantek ~]# service mongod start
Starting mongod:                                           [  OK  ]
[root@opmantek ~]# 

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Log into each OMK Application via the GUI and verify the data is still there.  If everythis everything is as it should be then delete /data/mongodump

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