Linux下安装mongodb详细过程

本次安装mongodb使用yum.repo方式。详细过程请参考，也列出一些安装过程中的错误，欢迎指正。

mongodb版本：3.0

先在linux下cd 到 /etc/yum.repos.d/

新建脚本文件mongodb-org-3.0.repo：

 [mongodb-org-3.0]
 name=MongoDB 3.0 Repository
 baseurl=https://repo.mongodb.org/yum/redhat/6/mongodb-org/3.0/x86_64/
 gpgcheck=
 enabled=

:wq保存后，清理yum资源

yum clean all

然后搜索下源

yum search mongodb

以搜索出来的名称为准。

上图search后出来的结果是mongodb-org.x86_64，然后mongo安装即可

yum install mongodb-org.x86_64

注：在安装过程中，如果遇到下面的错误：

[root@localhost yum.repos.d]# yum install mongodb
Loaded plugins: fastestmirror
Setting up Install Process
Loading mirror speeds from cached hostfile
* base: mirror.bit.edu.cn
* epel: mirrors.aliyun.com
* extras: mirror.neu.edu.cn
* updates: mirrors.btte.net
Resolving Dependencies
--> Running transaction check
---> Package mongodb.x86_64 :2.4.-.el6 will be installed
--> Processing Conflict: mongodb-org-3.0.-.el6.x86_64 conflicts mongodb
--> Processing Conflict: mongodb-org-mongos-3.0.-.el6.x86_64 conflicts mongodb
--> Processing Conflict: mongodb-org-server-3.0.-.el6.x86_64 conflicts mongodb
--> Processing Conflict: mongodb-org-shell-3.0.-.el6.x86_64 conflicts mongodb
--> Processing Conflict: mongodb-org-tools-3.0.-.el6.x86_64 conflicts mongodb
--> Finished Dependency Resolution
Error: mongodb-org-mongos conflicts with mongodb-2.4.-.el6.x86_64
Error: mongodb-org-server conflicts with mongodb-2.4.-.el6.x86_64
Error: mongodb-org-tools conflicts with mongodb-2.4.-.el6.x86_64
Error: mongodb-org-shell conflicts with mongodb-2.4.-.el6.x86_64
Error: mongodb-org conflicts with mongodb-2.4.-.el6.x86_64
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest

解决方法如下：

 yum install mongodb-org.x86_64 --skip-broken

跳过依赖关系就可以安装了。

mongod启动：

service mongod start

关闭（查找到进程然后kill掉）：

ps -ef|grep mongod
kill xx pid

如果存在类似下面的一些警告：

I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
I CONTROL  [initandlisten] **        We suggest setting it to 'never'
I CONTROL  [initandlisten]
I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
 I CONTROL  [initandlisten] **        We suggest setting it to 'never'

echo "never" > /sys/kernel/mm/transparent_hugepage/enabled
echo "never" > /sys/kernel/mm/transparent_hugepage/defrag

请参考下面资料：http://bbs.51cto.com/thread-1146184-1.html

如果有遇到这种错误：

--08T11::14.789+ I CONTROL [initandlisten] ** WARNING: soft rlimits too low. rlimits set to  processes,  files. Number of processes should be at least  : 0.5 times number of files.

可以尝试：

cd /etc/security/limits.d
vim -nproc.conf

* soft nproc 32000

root soft nproc unlimited

将第一行改成提示的值（此处的值：Number of processes should be at least 32000）

关闭mongodb：

mongod -f /etc/mongod.conf --shutdown

查看mongo状态：

service mongod status

启动mongo：

mongod -f /etc/mongod.conf

查看运行状态：

ps aux|grep mongod
netstat -aux|grep mongod