ubuntu16.04 下安装mongodb３.４.４

环境：

ideal@ideal-PowerEdge-R730xd:~$ cat /etc/issueUbuntu 16.04.2 LTS \n \l

看看本机是否有mongodb，有则删除

ideal@ideal-PowerEdge-R730xd:~$ sudo apt-get autoremove --purge mongodbReading package lists... DoneBuilding dependency tree       Reading state information... DonePackage 'mongodb' is not installed, so not removedThe following packages will be REMOVED:  javascript-common* libboost-program-options1.58.0* libboost-thread1.58.0* libexpat1-dev* libgoogle-perftools4* libjs-jquery* libmysqlclient20*  libpcrecpp0v5* libpython-all-dev* libpython-dev* libpython2.7-dev* libsnappy1v5* libtcmalloc-minimal4* libv8-3.14.5* libyaml-cpp0.5v5* mongodb-clients*  mongodb-server* mysql-common* python-django-common* python-pip-whl* python2.7-dev*0 upgraded, 0 newly installed, 21 to remove and 88 not upgraded.After this operation, 259 MB disk space will be freed.Do you want to continue? [Y/n] y       #　这里输入“ｙ”(Reading database ... 216448 files and directories currently installed.)……

接下来就开始安装
1. 导入MongoDB公共GPG密钥sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 0C49F3730359A14518585931BC711F9BA15703C6
2. 创建/etc/apt/sources.list.d/mongodb3.4-org 名单列表文件echo "deb [ arch=amd64,arm64 ] http://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.4.list
3. 重新加载本地包数据库sudo apt-get update
4. 安装MongoDB包 sudo apt-get install -y mongodb-org
5. 我们需要简单配置下，编辑/etc/mongod.conf

ideal@ideal-PowerEdge-R730xd:~$ sudo vim /etc/mongod.conf

mongod.conf 文件如下：

# mongod.conf# for documentation of all options, see:#   http://docs.mongodb.org/manual/reference/configuration-options/# Where and how to store data.storage:  dbPath: /var/lib/mongodb            # mongodb的数据存放目录  journal:    enabled: true#  engine:#  mmapv1:#  wiredTiger:# where to write logging data.systemLog:  destination: file  logAppend: true  path: /var/log/mongodb/mongod.log    # 日志存放目录# network interfacesnet:  port: 27017                          # 设置访问端口，默认27017    bindIp: 192.168.255.1                # 绑定ip，默认127.0.0.1#processManagement:#security:#operationProfiling:#replication:#sharding:## Enterprise-Only Options:#auditLog:#snmp:     

编辑完之后source 一下

ideal@ideal-PowerEdge-R730xd:~$ source /etc/mongod.conf

现在我们的mongodb已经安装成功了， 我们来启动下

ideal@ideal-PowerEdge-R730xd:~$ sudo service mongod start

接着我们看看是否可以打开mongodb shell 客户端：

ideal@ideal-PowerEdge-R730xd:~$ mongo 192.168.255.1:27017MongoDB shell version v3.4.4connecting to: 192.168.255.1:27017MongoDB server version: 3.4.4Server has startup warnings: 2017-06-08T10:19:16.241+0800 I CONTROL  [initandlisten] 2017-06-08T10:19:16.241+0800 I CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.2017-06-08T10:19:16.241+0800 I CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.2017-06-08T10:19:16.241+0800 I CONTROL  [initandlisten] 2017-06-08T10:19:16.242+0800 I CONTROL  [initandlisten] 2017-06-08T10:19:16.242+0800 I CONTROL  [initandlisten] ** WARNING: You are running on a NUMA machine.2017-06-08T10:19:16.242+0800 I CONTROL  [initandlisten] **          We suggest launching mongod like this to avoid performance problems:2017-06-08T10:19:16.242+0800 I CONTROL  [initandlisten] **              numactl --interleave=all mongod [other options]2017-06-08T10:19:16.242+0800 I CONTROL  [initandlisten] 2017-06-08T10:19:16.242+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.2017-06-08T10:19:16.242+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'2017-06-08T10:19:16.242+0800 I CONTROL  [initandlisten] > show dbsadmin  0.078GBlocal  0.078GB> 

shell 客户端还可以这样启动：

ideal@ideal-PowerEdge-R730xd:~$ mongo -host 192.168.255.1 -port 27017

介绍几个管理命令吧：
启动mongod 服务：

sudo service mongod start

查看mongod 服务状态：

sudo service mongod status

停止mongod 服务：

sudo service mongod stop

重启mongod 服务：

sudo service mongod restart

卸载mongodb：

sudo apt-get purge mongodb-org*sudo rm -r /var/log/mongodbsudo rm -r /var/lib/mongodb

这里没有配置帐户和密码，而且只搭了一台，也可以搭一个mongodb集群，设置主从，支持切片操作。这里有以前写的数据导出文章点击此处。本文只是作为笔记。。。

记录一个centos下mongodb的错误：
错误原因是因为我用kill -9 xxxx”杀死了mongodb的进程；重新启动会报如下错误：

[root@crawl ~]# mongod -f /etc/mongod.conf &[1] 3056[root@crawl ~]# about to fork child process, waiting until server is ready for connections.forked process: 3058ERROR: child process failed, exited with error number 100

我的解决办法就是删除mongod.lock 文件

[root@crawl ~]# locate mongod.lock/var/lib/mongo/mongod.lock[root@crawl ~]# cd /var/lib/mongo/[root@crawl mongo]# lsjournal  local.0  local.ns  mongod.lock  SinaComment3.0  SinaComment3.1  SinaComment3.ns  storage.bson[root@crawl mongo]# rm mongod.lock rm: remove regular file 'mongod.lock'? y[root@crawl mongo]#

然后重启mongod

[root@crawl mongo]# mongod -f /etc/mongod.conf &[1] 13140[root@crawl mongo]# about to fork child process, waiting until server is ready for connections.forked process: 13143child process started successfully, parent exiting^C[1]+  Done                    mongod -f /etc/mongod.conf[root@crawl mongo]#

问题以解决，打开mongo shell看看

[root@crawl mongo]# mongo 192.168.255.151:27017MongoDB shell version: 3.0.14connecting to: 192.168.100.151:27017/testServer has startup warnings: 2017-06-15T10:15:01.737+0800 I CONTROL  [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.2017-06-15T10:15:01.737+0800 I CONTROL  [initandlisten] 2017-06-15T10:15:01.737+0800 I CONTROL  [initandlisten] 2017-06-15T10:15:01.737+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.2017-06-15T10:15:01.737+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'2017-06-15T10:15:01.737+0800 I CONTROL  [initandlisten] 2017-06-15T10:15:01.737+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.2017-06-15T10:15:01.737+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'2017-06-15T10:15:01.737+0800 I CONTROL  [initandlisten] 2017-06-15T10:15:01.737+0800 I CONTROL  [initandlisten] ** WARNING: soft rlimits too low. rlimits set to 200153 processes, 1024000 files. Number of processes should be at least 512000 : 0.5 times number of files.2017-06-15T10:15:01.737+0800 I CONTROL  [initandlisten] > show dbsSinaComment3  0.203GBlocal         0.078GB> exitbye[root@crawl mongo]

正常关闭mongodb如下：
先通过shell连上服务器：
mongo
use admin
db.shutdownServer()
这种方法必须是有用户认证，否则会报错

或者直接kill -15 ,注意kill -9 可能会导致数据文件损坏

参考文章https://docs.mongodb.com/manual/tutorial/install-mongodb-on-ubuntu/

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