【MongoDB学习笔记3】处理MongoDB连接错误

安装MongoDB后第一次启用shell登录

mongo

会出现一下的错误：

warning: Failed to connect to 127.0.0.1:27017, reason: errno:111 Connection refused

用一下命令查看以下相关的信息：

mongod -v

输出以下信息：

2014-12-31T22:39:39.586-0800 shardKeyTest passed   2014-12-31T22:39:39.587-0800 isInRangeTest passed    2014-12-31T22:39:39.587-0800 shardObjTest passed    2014-12-31T22:39:39.588-0800 [DataFileSync] BackgroundJob starting: DataFileSync    2014-12-31T22:39:39.604-0800 [initandlisten] MongoDB starting : pid=20666 port=27017 dbpath=/data/db 64-bit host=localhost.localdomain    2014-12-31T22:39:39.605-0800 [initandlisten] db version v2.6.6    2014-12-31T22:39:39.605-0800 [initandlisten] git version: 608e8bc319627693b04cc7da29ecc300a5f45a1f modules: enterprise    2014-12-31T22:39:39.605-0800 [initandlisten] OpenSSL version: OpenSSL 1.0.1e-fips 11 Feb 2013    2014-12-31T22:39:39.605-0800 [initandlisten] build info: Linux ip-10-41-128-95 2.6.32-220.el6.x86_64 #1 SMP Wed Nov 9 08:03:13 EST 2011 x86_64 BOOST_LIB_VERSION=1_49    2014-12-31T22:39:39.605-0800 [initandlisten] allocator: tcmalloc    2014-12-31T22:39:39.605-0800 [initandlisten] options: { systemLog: { verbosity: 1 } }    2014-12-31T22:39:39.605-0800 [initandlisten] User Assertion: 10296:    *********************************************************************     ERROR: dbpath (/data/db) does not exist.      Create this directory or give existing directory in --dbpath.       See http://dochub.mongodb.org/core/startingandstoppingmongo    *********************************************************************2014-12-31T22:39:39.703-0800 [initandlisten] exception in initAndListen: 10296     *********************************************************************       ERROR: dbpath (/data/db) does not exist.       Create this directory or give existing directory in --dbpath.     See http://dochub.mongodb.org/core/startingandstoppingmongo    ********************************************************************* , terminating    2014-12-31T22:39:39.703-0800 [initandlisten] dbexit:    2014-12-31T22:39:39.703-0800 [initandlisten] shutdown: going to close listening sockets...    2014-12-31T22:39:39.703-0800 [initandlisten] shutdown: going to flush diaglog...    2014-12-31T22:39:39.703-0800 [initandlisten] shutdown: going to close sockets...    2014-12-31T22:39:39.704-0800 [initandlisten] shutdown: waiting for fs preallocator...    2014-12-31T22:39:39.704-0800 [initandlisten] shutdown: lock for final commit...    2014-12-31T22:39:39.704-0800 [initandlisten] shutdown: final commit...    2014-12-31T22:39:39.704-0800 [initandlisten] shutdown: closing all files...    2014-12-31T22:39:39.704-0800 [initandlisten] closeAllFiles() finished    2014-12-31T22:39:39.704-0800 [initandlisten] dbexit: really exiting now

查看默认的配置文档：

dbpath=/var/lib/mongo

重新加载配置文档：

mongod -f /etc/mongod.conf

再次登录后正常：

mongo

得到信息：

MongoDB shell version: 2.6.6   connecting to: test    Welcome to the MongoDB shell.    For interactive help, type "help".    For more comprehensive documentation, see            http://docs.mongodb.org/    Questions? Try the support group                           http://groups.google.com/group/mongodb-user    >