Step:1 Configure MongoDB 3.2 yum Repository.
In both Operating system RHEL7.x and CentOS 7.x yum repositories are kept in ‘/etc/yum.repos.d/’ directory. Create the mongodb repository file with the name “mongodb-org.repo”.
[root@mongodb ~]# cd /etc/yum.repos.d/ [root@mongodb yum.repos.d]# vi mongodb-org.repo [mongodb-org] name=MongoDB 3.2 Repository baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.2/x86_64/ gpgcheck=1 enabled=1 gpgkey=https://www.mongodb.org/static/pgp/server-3.2.asc
Step:2 Install MongoDB package using yum command.
To install MongoDB and its dependent packages use the below yum command.
[root@mongodb ~]# yum install mongodb-org -y
Above command will install the followings MongoDB Packages Following files and directory will be created once the MongoDB packages are installed.
- /etc/mongod.conf — Cofiguration file of MongoDB (By default localhost ip (127.0.0.1) is bind IP and 27017 is the default port ).
- /var/lib/mongo — Data directory of MongoDB
- /var/log/mongodb/mongod.log — Log file of MongoDB
Step:3 Start and Enable the Mongodb service.
Run the beneath commands to start and enable the mongodb service across the reboot.
[root@mongodb ~]# systemctl start mongod.service [root@mongodb ~]# systemctl enable mongod.service mongod.service is not a native service, redirecting to /sbin/chkconfig. Executing /sbin/chkconfig mongod on [root@mongodb ~]#
In Case OS firewall is enabled and running then open the MongoDB port ‘27017’ using below firewalld-cmd command.
[root@mongodb ~]# firewall-cmd --zone=public --add-port=27017/tcp --permanent success [root@mongodb ~]# firewall-cmd --reload success [root@mongodb ~]#
Step:4 Connect to MongoDB from the terminal.
Type the command ‘mongo’ from the terminal to connect MongoDB
[root@mongodb ~]# mongo
While connecting to MongoDB we may get below warning message Use the below commands to resolve ‘transparent huge page error‘ :
[root@mongodb ~]# echo never > /sys/kernel/mm/transparent_hugepage/enabled [root@mongodb ~]# echo never > /sys/kernel/mm/transparent_hugepage/defrag [root@mongodb ~]# systemctl restart mongod [root@mongodb ~]#
To make above changes permanent, add the above lines in /etc/rc.local file and assign executable rights to /etc/rc.localfile.
[root@mongodb ~]# cat /etc/rc.local echo never > /sys/kernel/mm/transparent_hugepage/enabled; echo never > /sys/kernel/mm/transparent_hugepage/defrag; root@mongodb ~]# chmod +x /etc/rc.local
Use below steps to resolve Warning Error related to rlimits, exact error is shown above. Add the below entry for mongd user in ‘/etc/security/limits.d/20-nproc.conf’ file.
[root@mongodb ~]# vi /etc/security/limits.d/20-nproc.conf mongodsoft nproc 64000
Reboot the Server and then try to connect MongoDB using mongo command:
[root@mongodb ~]# mongo MongoDB shell version: 3.2.7 connecting to: test >
As you can see that we are able to connect mongodb without any warnings, So our installation is completed now.
Uninstall / Remove MongoDB
Run the beneath commands one after the another from the console to remove MongoDB completely.
[root@mongodb ~]# systemctl stop mongod [root@mongodb ~]# yum erase $(rpm -qa | grep mongodb-org) [root@mongodb ~]# rm -rf /var/log/mongodb [root@mongodb ~]# rm -rf /var/lib/mongo [root@mongodb ~]#
Reference: https://docs.mongodb.com/manual/tutorial/install-mongodb-on-red-hat/