mongodb 在 Ubuntu系统上的安装及卸载

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　　　　Install the latest stable version of MongoDB.
　　Issue the following command:
　　

sudo apt-get install -y mongodb-org　　


Run MongoDB Community Edition
　　Most Unix-like operating systems limit the system resources that a session may use. These limits may negatively impact MongoDB operation. See UNIX ulimit Settings for more information.
　　The MongoDB instance stores its data files in /var/lib/mongodb and its log files in /var/log/mongodbby default,  and runs using the mongodb user account. You can specify>/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/mongodb and /var/log/mongodb directories to give this user access to these directories.

1 Start MongoDB.　　Issue the following command to start mongod:
　　

sudo service mongod start　　


2 Verify that MongoDB has started successfully　　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
　　

[initandlisten] waiting for connections on port <port>　　


Verify that MongoDB has started successfully
　　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
　　

[initandlisten] waiting for connections on port <port>　　

　　where <port> is the port configured in /etc/mongod.conf, 27017 by default.

3 Stop MongoDB.　　As needed, you can stop the mongod process by issuing the following command:
　　

sudo service mongod stop　　


4 Restart MongoDB.　　Issue the following command to restart mongod:
　　

sudo service mongod restart　　


5 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 Community Edition
　　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.

1 Stop MongoDB.　　Stop the mongod process by issuing the following command:
　　

sudo service mongod stop　　


2 Remove Packages.　　Remove any MongoDB packages that you had previously installed.
　　

sudo apt-get purge mongodb-org*　　


3 Remove Data Directories.　　Remove MongoDB databases and log files.
　　

sudo rm -r /var/log/mongodb　　
sudo rm
-r /var/lib/mongodb　　

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