CentOS 6.7上尝试采用yum安装MongoDB （yum install mongodb-org），出现No package mongodb-org available的问题，本文给出问题的解决方法，并成功安装Mongodb。

问题

使用yum install mongodb-org命令，安装MongoDB，出现No package mongodb-org available. 问题。具体信息如下：

[root@dev03 ~]#  yum install mongodb-orgLoaded plugins: fastestmirrorSetting up Install ProcessLoading mirror speeds from cached hostfileNo package mongodb-org available.Error: Nothing to do

解决方法

出现上述问题的原因是缺少可用的mongodb-org包

（No package mongodb-org available.）。

 

解决方法：

在/etc/yum.repos.d/目录下，创建一个mongodb.repo文件，指定MongoDB资源库即可。

使用 vim /etc/yum.repos.d/mongodb.repo命令，创建并打开文件mongodb.repo，

[root@dev03 etc]# vim /etc/yum.repos.d/mongodb.repo

在mongodb.repo文件中，添加MongoDB资源，这里获取的Mongo-org版本为最新的3.4。如：

[mongodb-org-3.4]name=MongoDB Repositorybaseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.4/x86_64/gpgcheck=1enabled=1gpgkey=https://www.mongodb.org/static/pgp/server-3.4.asc

安装

配置好MongoDB相关的信息之后，重新使用yum install mongodb-org命令安装mongodb-org。

[root@dev03 etc]# yum install mongodb-orgLoaded plugins: fastestmirrorSetting up Install ProcessLoading mirror speeds from cached hostfilemongodb-org-3.4                                                                                                                                                                                                                                        | 2.5 kB     00:00     mongodb-org-3.4/primary_db                                                                                                                                                                                                                             |  18 kB     00:00     Resolving Dependencies--> Running transaction check---> Package mongodb-org.x86_64 0:3.4.2-1.el6 will be installed--> Processing Dependency: mongodb-org-tools = 3.4.2 for package: mongodb-org-3.4.2-1.el6.x86_64--> Processing Dependency: mongodb-org-shell = 3.4.2 for package: mongodb-org-3.4.2-1.el6.x86_64--> Processing Dependency: mongodb-org-server = 3.4.2 for package: mongodb-org-3.4.2-1.el6.x86_64--> Processing Dependency: mongodb-org-mongos = 3.4.2 for package: mongodb-org-3.4.2-1.el6.x86_64--> Running transaction check---> Package mongodb-org-mongos.x86_64 0:3.4.2-1.el6 will be installed---> Package mongodb-org-server.x86_64 0:3.4.2-1.el6 will be installed---> Package mongodb-org-shell.x86_64 0:3.4.2-1.el6 will be installed---> Package mongodb-org-tools.x86_64 0:3.4.2-1.el6 will be installed--> Finished Dependency ResolutionDependencies Resolved============================================================================================================================================================================================================================================================================== Package                                                                Arch                                                       Version                                                          Repository                                                           Size==============================================================================================================================================================================================================================================================================Installing: mongodb-org                                                            x86_64                                                     3.4.2-1.el6                                                      mongodb-org-3.4                                                     5.8 kInstalling for dependencies: mongodb-org-mongos                                                     x86_64                                                     3.4.2-1.el6                                                      mongodb-org-3.4                                                      12 M mongodb-org-server                                                     x86_64                                                     3.4.2-1.el6                                                      mongodb-org-3.4                                                      20 M mongodb-org-shell                                                      x86_64                                                     3.4.2-1.el6                                                      mongodb-org-3.4                                                      11 M mongodb-org-tools                                                      x86_64                                                     3.4.2-1.el6                                                      mongodb-org-3.4                                                      49 MTransaction Summary==============================================================================================================================================================================================================================================================================Install       5 Package(s)Total download size: 91 MInstalled size: 257 MIs this ok [y/N]:

选择 y

Is this ok [y/N]: yDownloading Packages:(1/5): mongodb-org-3.4.2-1.el6.x86_64.rpm                                                                                                                                                                                                              | 5.8 kB     00:00     (2/5): mongodb-org-mongos-3.4.2-1.el6.x86_64.rpm                                                                                                                                                                                                       |  12 MB     00:01     (3/5): mongodb-org-server-3.4.2-1.el6.x86_64.rpm                                                                                                                                                                                                       |  20 MB     00:00     (4/5): mongodb-org-shell-3.4.2-1.el6.x86_64.rpm                                                                                                                                                                                                        |  11 MB     00:00     (5/5): mongodb-org-tools-3.4.2-1.el6.x86_64.rpm                                                                                                                                                                                                        |  49 MB     00:01     ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Total                                                                                                                                                                                                                                          15 MB/s |  91 MB     00:06     warning: rpmts_HdrFromFdno: Header V3 RSA/SHA1 Signature, key ID a15703c6: NOKEYRetrieving key from https://www.mongodb.org/static/pgp/server-3.4.ascImporting GPG key 0xA15703C6: Userid: "MongoDB 3.4 Release Signing Key 
    
     " From  : https://www.mongodb.org/static/pgp/server-3.4.ascIs this ok [y/N]:
    

选择 y

Is this ok [y/N]: yDownloading Packages:(1/5): mongodb-org-3.4.2-1.el6.x86_64.rpm                                                                                                                                                                                                              | 5.8 kB     00:00     (2/5): mongodb-org-mongos-3.4.2-1.el6.x86_64.rpm                                                                                                                                                                                                       |  12 MB     00:01     (3/5): mongodb-org-server-3.4.2-1.el6.x86_64.rpm                                                                                                                                                                                                       |  20 MB     00:00     (4/5): mongodb-org-shell-3.4.2-1.el6.x86_64.rpm                                                                                                                                                                                                        |  11 MB     00:00     (5/5): mongodb-org-tools-3.4.2-1.el6.x86_64.rpm                                                                                                                                                                                                        |  49 MB     00:01     ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Total                                                                                                                                                                                                                                          15 MB/s |  91 MB     00:06     warning: rpmts_HdrFromFdno: Header V3 RSA/SHA1 Signature, key ID a15703c6: NOKEYRetrieving key from https://www.mongodb.org/static/pgp/server-3.4.ascImporting GPG key 0xA15703C6: Userid: "MongoDB 3.4 Release Signing Key 
    
     " From  : https://www.mongodb.org/static/pgp/server-3.4.ascIs this ok [y/N]: yRunning rpm_check_debugRunning Transaction TestTransaction Test SucceededRunning TransactionWarning: RPMDB altered outside of yum.  Installing : mongodb-org-server-3.4.2-1.el6.x86_64                                                                                                                                                                                                                      1/5   Installing : mongodb-org-shell-3.4.2-1.el6.x86_64                                                                                                                                                                                                                       2/5   Installing : mongodb-org-mongos-3.4.2-1.el6.x86_64                                                                                                                                                                                                                      3/5   Installing : mongodb-org-tools-3.4.2-1.el6.x86_64                                                                                                                                                                                                                       4/5   Installing : mongodb-org-3.4.2-1.el6.x86_64                                                                                                                                                                                                                             5/5   Verifying  : mongodb-org-tools-3.4.2-1.el6.x86_64                                                                                                                                                                                                                       1/5   Verifying  : mongodb-org-mongos-3.4.2-1.el6.x86_64                                                                                                                                                                                                                      2/5   Verifying  : mongodb-org-shell-3.4.2-1.el6.x86_64                                                                                                                                                                                                                       3/5   Verifying  : mongodb-org-3.4.2-1.el6.x86_64                                                                                                                                                                                                                             4/5   Verifying  : mongodb-org-server-3.4.2-1.el6.x86_64                                                                                                                                                                                                                      5/5 Installed:  mongodb-org.x86_64 0:3.4.2-1.el6                                                                                                                                                                                                                                            Dependency Installed:  mongodb-org-mongos.x86_64 0:3.4.2-1.el6                            mongodb-org-server.x86_64 0:3.4.2-1.el6                            mongodb-org-shell.x86_64 0:3.4.2-1.el6                            mongodb-org-tools.x86_64 0:3.4.2-1.el6                           Complete![root@dev03 etc]#
    

至此 mongo-org 3.4就安装完成了。

启动

使用 service mongod start命令启动Mongo 服务

[root@dev03 ~]# service mongod startStarting mongod:                                           [  OK  ][root@dev03 ~]#

一般情况下，基本上就成功安装和启动Mongo服务，可以开启Mongo之旅了。

但是，有可能之前进行过安装、删除Mongo的相关操作，这个时候使用service mongod start命令启动时，可能会遇到如下的问题：

Error starting mongod. /var/run/mongodb/mongod.pid exists.

[root@dev03 srv]# service mongod startError starting mongod. /var/run/mongodb/mongod.pid exists.[root@dev03 srv]#

使用vim  /var/log/mongodb/mongod.log命令来查看日志，

 Failed to unlink socket file /tmp/mongodb-27017.sock Operation not permitted

详细截图如下：

解决问题：

这个问题的出现，主要是权限的问题，使用如下命令授权一下，然后重新启动即可。

chown mongod:mongod /tmp/mongodb-27017.sock

chown mongod:mongod /tmp/mongodb-27017.sock

[root@dev03 ~]# chown mongod:mongod /tmp/mongodb-27017.sock[root@dev03 ~]# service mongod startStarting mongod:                                           [  OK  ][root@dev03 ~]#