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- Install MongoDB on Red Hat Enterprise or CentOS Linux
Install MongoDB on Red Hat Enterprise or CentOS Linux¶
On this page
Overview¶
Use this tutorial to install MongoDB on Red Hat Enterprise Linux or
CentOS Linux versions 5, 6, and 7 using .rpm
packages. While some of these
distributions include their own MongoDB packages, the official MongoDB
packages are generally more up to date.
Platform Support
This installation guide only supports 64-bit systems. See Platform Support for details.
Packages¶
MongoDB provides officially supported packages in their own repository. This repository contains the following packages:
mongodb-org
This package is a
metapackage
that will automatically install the four component packages listed below.mongodb-org-server
This package contains the
mongod
daemon and associated configuration and init scripts.mongodb-org-mongos
This package contains the
mongos
daemon.mongodb-org-shell
This package contains the
mongo
shell.mongodb-org-tools
This package contains the following MongoDB tools:
mongoimport
bsondump
,mongodump
,mongoexport
,mongofiles
,mongooplog
,mongoperf
,mongorestore
,mongostat
, andmongotop
.
Init Scripts¶
The mongodb-org
package includes various init scripts, including the init script /etc/rc.d/init.d/mongod
. These scripts
are used to stop, start, and restart daemon processes.
The package configures MongoDB using the /etc/mongod.conf
file in
conjunction with the init scripts. See
the Configuration File
reference for documentation of settings available in the configuration file.
As of version 3.0.15, there are no init scripts for
mongos
. The mongos
process is used only in
sharding. You can use the mongod
init script
to derive your own mongos
init script for use in such
environments. See the mongos
reference for configuration details.
Considerations¶
This installation guide only supports 64-bit systems. See Platform Support for details.
The default /etc/mongod.conf
configuration file supplied by the
3.0 series packages has bind_ip
set to
127.0.0.1
by default. Modify this setting as needed for your
environment before initializing a replica set.
Changed in version 2.6: The package structure and names have changed as of version 2.6. For instructions on installation of an older release, please refer to the documentation for the appropriate version.
Install MongoDB¶
Configure the package management system (yum
).¶
Create a /etc/yum.repos.d/mongodb-org-3.0.repo
file so that
you can install MongoDB directly, using yum
.
Changed in version 3.0: MongoDB Linux packages for 3.0 are in a new repository.
For the latest stable release of MongoDB¶
Use the following repository file:
.repo
files for each release can also be found in the repository itself.
Remember that odd-numbered minor release versions (e.g. 2.5) are development versions and are unsuitable
for production use.
Install the MongoDB packages and associated tools.¶
When you install the packages, you choose whether to install the current release or a previous one. This step provides the commands for both.
To install the latest stable version of MongoDB, issue the following command:
To install a specific release of MongoDB, specify each component package individually and append the version number to the package name, as in the following example:
You can specify any available version of MongoDB. However yum
will upgrade the packages when a newer version becomes available. To
prevent unintended upgrades, pin the package. To pin a package, add
the following exclude
directive to your /etc/yum.conf
file:
Versions of the MongoDB packages before 2.6 use a different repo location. Refer to the version of the documentation appropriate for your MongoDB version.
Run MongoDB¶
Prerequisites¶
Configure SELinux¶
Important
You must configure SELinux to allow MongoDB to start on Red Hat Linux-based systems (Red Hat Enterprise Linux or CentOS Linux).
To configure SELinux, administrators have three options:
Note
All three options require root
privileges. The first two options
each requires a system reboot and may have larger implications for
your deployment.
Disable SELinux entirely by changing the
SELINUX
setting todisabled
in/etc/selinux/config
.Set SELinux to
permissive
mode in/etc/selinux/config
by changing theSELINUX
setting topermissive
.Note
You can use
setenforce
to change to permissive mode; this method does not require a reboot but is not persistent.Enable access to the relevant ports (e.g. 27017) for SELinux if in
enforcing
mode. See Default MongoDB Port for more information on MongoDB’s default ports. For default settings, this can be accomplished by runningWarning
On RHEL 7.0, if you change the data path, the default SELinux policies will prevent
mongod
from having write access on the new data path if you do not change the security context.
You may alternatively choose not to install the SELinux packages when you are installing your Linux operating system, or choose to remove the relevant packages. This option is the most invasive and is not recommended.
Data Directories and Permissions¶
Warning
On RHEL 7.0, if you change the data path, the default SELinux
policies will prevent mongod
from having write access on
the new data path if you do not change the security context.
The MongoDB instance stores its data files in /var/lib/mongo
and its log files in /var/log/mongodb
by default,
and runs using the mongod
user account. You can specify alternate log and data file
directories in /etc/mongod.conf
. See systemLog.path
and storage.dbPath
for additional information.
If you change the user that runs the MongoDB process, you
must modify the access control rights to the /var/lib/mongo
and
/var/log/mongodb
directories to give this user access to these
directories.
Procedure¶
Verify that MongoDB has started successfully¶
You can verify that the mongod
process has started
successfully by checking the contents of the log file at
/var/log/mongodb/mongod.log
for a line reading
where <port>
is the port configured in /etc/mongod.conf
, 27017
by default.
You can optionally ensure that MongoDB will start following a system reboot by issuing the following command:
Begin using MongoDB.¶
To help you start using MongoDB, MongoDB provides Getting Started Guides in various driver editions. See Getting Started for the available editions.
Before deploying MongoDB in a production environment, consider the Production Notes document.
Later, to stop MongoDB, press Control+C
in the terminal where the
mongod
instance is running.
Uninstall MongoDB¶
To completely remove MongoDB from a system, you must remove the MongoDB applications themselves, the configuration files, and any directories containing data and logs. The following section guides you through the necessary steps.
Warning
This process will completely remove MongoDB, its configuration, and all databases. This process is not reversible, so ensure that all of your configuration and data is backed up before proceeding.
Remove Packages.¶
Remove any MongoDB packages that you had previously installed.
Remove Data Directories.¶
Remove MongoDB databases and log files.