新手玩个人服务器（阿里云centos）-mongodb安装和启动

运行yum命令查看MongoDB的包信息 [root@vm ~]# yum info mongo-10gen （提示没有相关匹配的信息，） 说明你的centos系统中的yum源不包含MongoDB的相关资源，所以要在使用yum命令安装MongoDB前需要增加yum源，也就是在 /etc/yum.repos.d/目录中增加 *.repo yum源配置文件

<span style="font-family: Monaco, 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', Consolas, 'Courier New', monospace; line-height: 18px; background-color: rgb(250, 250, 250);">我们这里就将该文件命名为：/etc/yum.repos.d/10gen.repo</span>

（1）安装32位yum适用的RPM包，编辑/etc/yum.repos.d/10gen.repo，加入以下代码： [10gen] name=10gen Repository baseurl=http://downloads-distro.mongodb.org/repo/redhat/os/i686 gpgcheck=0

安装服务器端： [root@vm ~]# yum install mongo-10gen-server 因为mongo-10gen-server包依赖于mongo-10gen，所以安装了服务器后就不需要单独安装客户端工具包mongo-10gen了 单独安装可客户端： [root@vm ~]# yum install mongo-10gen

（2）安装成功后，可以通过脚本来控制启动/停止/重新启动 /etc/init.d/mongodb start/stop/restart （3）这时候查看系统服务： chkconfig --list （4）会有一个叫 mongod 的服务了，将它设为开机启动： chkconfig --level 345 mongod on （5）然后启动它： service mongod start （6）这时候再查看该服务用的哪个端口： netstat -atln

（6）验证MongoDB 可以通过检查日志文件/var/log/mongodb/mongod.log的内容来判断mongod进程是否正常运行。 也可以执行命令： $ sudo chkconfig mongod on 要停止MongoDB，执行： $ sudo service mongod stop 要重启MongoDB，执行： $ sudo service mongod restart

1：After upgrading MongoDB from version 2.4 to 2.6, I am not able to connect to it from another machine. The firewall has been checked to ensure that port 27017 is opened for the machine that I want to connect from. So what else could go wrong? Well, I was impatient and turned to you know what… Google search. According to this link: https://groups.google.com/forum/#!msg/mongodb-user/yhf05AW-hK8/YqES0cVIXlUJ, the problem is due to the database is bound to only local IP. Indeed, this was the case, and I could have found it out very easily had I run the netstat command: # netstat -tpln Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 127.0.0.1:27017 0.0.0.0:* LISTEN 10122/mongod To fix this, modify /etc/mongod.conf to include your server’s IP. Make sure you use ‘;’ instead of ‘,’ to list IP addresses. # Listen to local interface only. Comment out to listen on all interfaces. bind_ip=127.0.0.1;123.123.123.123

</pre><pre name="code" class="plain">http://blog.khmersite.net/2014/05/mongodb-warning-failed-to-connect/

I could not understand what bind_ip in mongodb is. I could make a remote connection from desktop to the EC2 machine by having bind_ip = 0.0.0.0, but could not make it work with bind_ip = 127.0.0.1. Please explain me what bind_ip is and why it works for 0.0.0.0 and not for 127.0.0.1. For reference from mongodb docs: bind_ip Default: All interfaces. Set this option to configure the mongod or mongos process to bind to and listen for connections from applications on this address. You may attach mongod or mongos instances to any interface; however, if you attach the process to a publicly accessible interface, implement proper authentication or firewall restrictions to protect the integrity of your database. You may concatenate a list of comma separated values to bind mongod to multiple IP addresses. You can't access your machine when you bind it to 127.0.0.1 on EC2. That's not a bug, it's reasoned by the network interface bindings. 127.0.0.1 will only bind to the loopback interface (so you will only be able to access it locally), while 0.0.0.0 will bind it to all network interfaces that are available. That's why you can access your mongodb on EC2 when you bind it to 0.0.0.0(as it's available through the internet now) and not via 127.0.0.1. For local servers (like a WAMP or a local mongodb server) that won't look different to you, but for that case you should also thing that binding to 0.0.0.0 for local servers might make them available over all network interfaces (so it might be public for someone who knows your IP, if there is no firewall!) Read on a similar question on Server Fault here.

http://stackoverflow.com/questions/17588876/mongodb-conf-bind-ip-127-0-0-1-does-not-work-but-0-0-0-0-works