CentOS7上新装的Mongodb的初始配置

实验环境

操作系统：CentOS Linux release 7.3.1611 (Core)数据库系统： Mongodb 3.4.9-1.el7IP： 192.168.230.134

尝试启动数据库

[root@localhost ~]# mongo MongoDB shell version v3.4.9connecting to: mongodb://127.0.0.1:27017/MongoDB server version: 3.4.9Server has startup warnings: 2017-09-27T01:58:52.405+0800 I STORAGE  [initandlisten] 2017-09-27T01:58:52.405+0800 I STORAGE  [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine2017-09-27T01:58:52.405+0800 I STORAGE  [initandlisten] **          See http://dochub.mongodb.org/core/prodnotes-filesystem2017-09-27T01:58:53.255+0800 I CONTROL  [initandlisten] 2017-09-27T01:58:53.255+0800 I CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.2017-09-27T01:58:53.255+0800 I CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.2017-09-27T01:58:53.255+0800 I CONTROL  [initandlisten] 2017-09-27T01:58:53.255+0800 I CONTROL  [initandlisten] 2017-09-27T01:58:53.255+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.2017-09-27T01:58:53.255+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'2017-09-27T01:58:53.255+0800 I CONTROL  [initandlisten] 2017-09-27T01:58:53.255+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.2017-09-27T01:58:53.255+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'2017-09-27T01:58:53.255+0800 I CONTROL  [initandlisten] > 

可观察到数据库报了4个警告：
1. WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
2. WARNING: Access control is not enabled for the database.
3. WARNING: /sys/kernel/mm/transparent_hugepage/enabled is ‘always’.
4. WARNING: /sys/kernel/mm/transparent_hugepage/defrag is ‘always’.

下面来一一解决：

1.WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine（强烈建议使用带WiredTiger存储引擎的XFS文件系统）

报这个错是因为我的虚拟环境使用的是EXT4文件系统，官方不建议，但不影响使用

在Linux上运行MongoDB时，官方建议使用Linux内核版本2.6.36或更高版本，使用XFS或EXT4文件系统。 如果可能，最好使用XFS，因为它通常与MongoDB表现更好。

使用WiredTiger存储引擎，强烈建议使用XFS，以避免在使用EXT4与WiredTiger时可能发生的性能问题。

使用MMAPv1存储引擎，MongoDB在使用它们之前预先分配其数据库文件，并经常创建大文件。 因此，官方建议使用XFS或EXT4文件系统。 如果可能，请使用XFS，因为它通常与MongoDB表现更好。

参考Kernel and File Systems

2.WARNING: Access control is not enabled for the database.（数据库未启用访问控制）

报这个错是因为MongoDB需要有一个安全库来开启数据库访问控制

在MongoDB部署上启用访问控制会强制执行身份验证，要求用户识别自己。当访问启用了访问控制的MongoDB部署时，用户只能执行由其角色确定的操作。

• 不使用访问控制模式开启mongdb

[root@localhost ~]# mongod --dbpath /var/lib/mongo2017-09-27T03:06:14.853+0800 I CONTROL  [initandlisten] MongoDB starting : pid=2421 port=27017 dbpath=/var/lib/mongo 64-bit host=localhost.localdomain2017-09-27T03:06:14.853+0800 I CONTROL  [initandlisten] db version v3.4.92017-09-27T03:06:14.853+0800 I CONTROL  [initandlisten] git version: 876ebee8c7dd0e2d992f36a848ff4dc50ee6603e2017-09-27T03:06:14.853+0800 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.0.1e-fips 11 Feb 20132017-09-27T03:06:14.853+0800 I CONTROL  [initandlisten] allocator: tcmalloc2017-09-27T03:06:14.853+0800 I CONTROL  [initandlisten] modules: none2017-09-27T03:06:14.853+0800 I CONTROL  [initandlisten] build environment:2017-09-27T03:06:14.853+0800 I CONTROL  [initandlisten]     distmod: rhel702017-09-27T03:06:14.853+0800 I CONTROL  [initandlisten]     distarch: x86_642017-09-27T03:06:14.853+0800 I CONTROL  [initandlisten]     target_arch: x86_642017-09-27T03:06:14.853+0800 I CONTROL  [initandlisten] options: { storage: { dbPath: "/var/lib/mongo" } }2017-09-27T03:06:14.971+0800 I -        [initandlisten] Detected data files in /var/lib/mongo created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.2017-09-27T03:06:14.971+0800 I STORAGE  [initandlisten] 2017-09-27T03:06:14.971+0800 I STORAGE  [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine2017-09-27T03:06:14.971+0800 I STORAGE  [initandlisten] **          See http://dochub.mongodb.org/core/prodnotes-filesystem2017-09-27T03:06:14.971+0800 I STORAGE  [initandlisten] wiredtiger_open config: create,cache_size=1455M,session_max=20000,eviction=(threads_min=4,threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),2017-09-27T03:06:16.364+0800 I CONTROL  [initandlisten] 2017-09-27T03:06:16.364+0800 I CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.2017-09-27T03:06:16.364+0800 I CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.2017-09-27T03:06:16.364+0800 I CONTROL  [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.2017-09-27T03:06:16.364+0800 I CONTROL  [initandlisten] 2017-09-27T03:06:16.365+0800 I CONTROL  [initandlisten] 2017-09-27T03:06:16.365+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.2017-09-27T03:06:16.365+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'2017-09-27T03:06:16.365+0800 I CONTROL  [initandlisten] 2017-09-27T03:06:16.365+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.2017-09-27T03:06:16.365+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'2017-09-27T03:06:16.365+0800 I CONTROL  [initandlisten] 2017-09-27T03:06:16.634+0800 I FTDC     [initandlisten] Initializing full-time diagnostic data capture with directory '/var/lib/mongo/diagnostic.data'2017-09-27T03:06:16.635+0800 I NETWORK  [thread1] waiting for connections on port 270172017-09-27T03:06:33.704+0800 I NETWORK  [thread1] connection accepted from 127.0.0.1:34808 #1 (1 connection now open)2017-09-27T03:06:33.705+0800 I NETWORK  [conn1] received client metadata from 127.0.0.1:34808 conn1: { application: { name: "MongoDB Shell" }, driver: { name: "MongoDB Internal Client", version: "3.4.9" }, os: { type: "Linux", name: "CentOS Linux release 7.3.1611 (Core) ", architecture: "x86_64", version: "Kernel 3.10.0-514.26.2.el7.x86_64" } }2017-09-27T03:07:15.311+0800 I COMMAND  [conn1] command admin.system.users appName: "MongoDB Shell" command: insert { insert: "system.users", documents: [ { _id: "admin.myUserAdmin", user: "myUserAdmin", db: "admin", credentials: { SCRAM-SHA-1: { iterationCount: 10000, salt: "pUdmLObMsG3wKU7MZDFU1g==", storedKey: "wlCaAzPOS+u7CUqzMKxeZB+DFkE=", serverKey: "KwP12FF1ASziFPVstN8mLrPLg+A=" } }, roles: [ { role: "userAdminAnyDatabase", db: "admin" } ] } ] } ninserted:1 keysInserted:1 numYields:0 reslen:44 locks:{ Global: { acquireCount: { r: 4, w: 4 } }, Database: { acquireCount: { W: 4 } }, Collection: { acquireCount: { w: 3 } } } protocol:op_query 145ms2017-09-27T03:07:15.311+0800 I COMMAND  [conn1] command admin.$cmd appName: "MongoDB Shell" command: createUser { createUser: "myUserAdmin", pwd: "xxx", roles: [ { role: "userAdminAnyDatabase", db: "admin" } ], digestPassword: false, writeConcern: { w: "majority", wtimeout: 600000.0 } } numYields:0 reslen:22 locks:{ Global: { acquireCount: { r: 4, w: 4 } }, Database: { acquireCount: { W: 4 } }, Collection: { acquireCount: { w: 3 } } } protocol:op_command 202ms

• 连接到instance

[root@localhost ~]# mongoMongoDB shell version v3.4.9connecting to: mongodb://127.0.0.1:27017MongoDB server version: 3.4.9Server has startup warnings: 2017-09-27T03:06:14.971+0800 I STORAGE  [initandlisten] 2017-09-27T03:06:14.971+0800 I STORAGE  [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine2017-09-27T03:06:14.971+0800 I STORAGE  [initandlisten] **          See http://dochub.mongodb.org/core/prodnotes-filesystem2017-09-27T03:06:16.364+0800 I CONTROL  [initandlisten] 2017-09-27T03:06:16.364+0800 I CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.2017-09-27T03:06:16.364+0800 I CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.2017-09-27T03:06:16.364+0800 I CONTROL  [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.2017-09-27T03:06:16.364+0800 I CONTROL  [initandlisten] 2017-09-27T03:06:16.365+0800 I CONTROL  [initandlisten] 2017-09-27T03:06:16.365+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.2017-09-27T03:06:16.365+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'2017-09-27T03:06:16.365+0800 I CONTROL  [initandlisten] 2017-09-27T03:06:16.365+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.2017-09-27T03:06:16.365+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'2017-09-27T03:06:16.365+0800 I CONTROL  [initandlisten] > 

• 在admin数据库中创建administrator 用户

> use adminswitched to db admin> db.createUser(...   {...     user: "myUserAdmin",...     pwd: "abc123",...     roles: [ { role: "userAdminAnyDatabase", db: "admin" } ]...   }... )Successfully added user: {    "user" : "myUserAdmin",    "roles" : [        {            "role" : "userAdminAnyDatabase",            "db" : "admin"        }    ]}> exitbye

• 重启Mongodb

使用Ctrl+c退出原mongod

q^H^C2017-09-27T03:07:25.685+0800 I CONTROL  [signalProcessingThread] got signal 2 (Interrupt), will terminate after current cmd ends2017-09-27T03:07:25.685+0800 I NETWORK  [signalProcessingThread] shutdown: going to close listening sockets...2017-09-27T03:07:25.685+0800 I NETWORK  [signalProcessingThread] closing listening socket: 62017-09-27T03:07:25.685+0800 I NETWORK  [signalProcessingThread] closing listening socket: 72017-09-27T03:07:25.685+0800 I NETWORK  [signalProcessingThread] removing socket file: /tmp/mongodb-27017.sock2017-09-27T03:07:25.685+0800 I NETWORK  [signalProcessingThread] shutdown: going to flush diaglog...2017-09-27T03:07:25.685+0800 I FTDC     [signalProcessingThread] Shutting down full-time diagnostic data capture2017-09-27T03:07:25.687+0800 I STORAGE  [signalProcessingThread] WiredTigerKVEngine shutting down2017-09-27T03:07:25.770+0800 I STORAGE  [signalProcessingThread] shutdown: removing fs lock...2017-09-27T03:07:25.770+0800 I CONTROL  [signalProcessingThread] now exiting2017-09-27T03:07:25.770+0800 I CONTROL  [signalProcessingThread] shutting down with code:0

• 开启访问控制启动Mongodb

[root@localhost ~]# mongod --auth --dbpath /var/lib/mongo2017-09-27T03:07:40.034+0800 I CONTROL  [initandlisten] MongoDB starting : pid=2508 port=27017 dbpath=/var/lib/mongo 64-bit host=localhost.localdomain2017-09-27T03:07:40.034+0800 I CONTROL  [initandlisten] db version v3.4.92017-09-27T03:07:40.034+0800 I CONTROL  [initandlisten] git version: 876ebee8c7dd0e2d992f36a848ff4dc50ee6603e2017-09-27T03:07:40.034+0800 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.0.1e-fips 11 Feb 20132017-09-27T03:07:40.034+0800 I CONTROL  [initandlisten] allocator: tcmalloc2017-09-27T03:07:40.034+0800 I CONTROL  [initandlisten] modules: none2017-09-27T03:07:40.034+0800 I CONTROL  [initandlisten] build environment:2017-09-27T03:07:40.034+0800 I CONTROL  [initandlisten]     distmod: rhel702017-09-27T03:07:40.034+0800 I CONTROL  [initandlisten]     distarch: x86_642017-09-27T03:07:40.034+0800 I CONTROL  [initandlisten]     target_arch: x86_642017-09-27T03:07:40.034+0800 I CONTROL  [initandlisten] options: { security: { authorization: "enabled" }, storage: { dbPath: "/var/lib/mongo" } }2017-09-27T03:07:40.054+0800 I -        [initandlisten] Detected data files in /var/lib/mongo created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.2017-09-27T03:07:40.054+0800 I STORAGE  [initandlisten] 2017-09-27T03:07:40.054+0800 I STORAGE  [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine2017-09-27T03:07:40.054+0800 I STORAGE  [initandlisten] **          See http://dochub.mongodb.org/core/prodnotes-filesystem2017-09-27T03:07:40.054+0800 I STORAGE  [initandlisten] wiredtiger_open config: create,cache_size=1455M,session_max=20000,eviction=(threads_min=4,threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),2017-09-27T03:07:40.420+0800 I CONTROL  [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.2017-09-27T03:07:40.420+0800 I CONTROL  [initandlisten] 2017-09-27T03:07:40.420+0800 I CONTROL  [initandlisten] 2017-09-27T03:07:40.420+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.2017-09-27T03:07:40.420+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'2017-09-27T03:07:40.420+0800 I CONTROL  [initandlisten] 2017-09-27T03:07:40.420+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.2017-09-27T03:07:40.420+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'2017-09-27T03:07:40.420+0800 I CONTROL  [initandlisten] 2017-09-27T03:07:40.422+0800 I FTDC     [initandlisten] Initializing full-time diagnostic data capture with directory '/var/lib/mongo/diagnostic.data'2017-09-27T03:07:40.422+0800 I NETWORK  [thread1] waiting for connections on port 270172017-09-27T03:08:07.458+0800 I NETWORK  [thread1] connection accepted from 127.0.0.1:34810 #1 (1 connection now open)2017-09-27T03:08:07.458+0800 I NETWORK  [conn1] received client metadata from 127.0.0.1:34810 conn1: { application: { name: "MongoDB Shell" }, driver: { name: "MongoDB Internal Client", version: "3.4.9" }, os: { type: "Linux", name: "CentOS Linux release 7.3.1611 (Core) ", architecture: "x86_64", version: "Kernel 3.10.0-514.26.2.el7.x86_64" } }2017-09-27T03:08:07.477+0800 I ACCESS   [conn1] Successfully authenticated as principal myUserAdmin on admin2017-09-27T03:08:07.478+0800 I ACCESS   [conn1] Unauthorized: not authorized on admin to execute command { getLog: "startupWarnings" }2017-09-27T03:08:07.665+0800 I ACCESS   [conn1] Unauthorized: not authorized on admin to execute command { replSetGetStatus: 1.0, forShell: 1.0 }2017-09-27T03:08:26.104+0800 I -        [conn1] end connection 127.0.0.1:34810 (1 connection now open)2017-09-27T03:08:29.697+0800 I NETWORK  [thread1] connection accepted from 127.0.0.1:34812 #2 (1 connection now open)2017-09-27T03:08:29.697+0800 I NETWORK  [conn2] received client metadata from 127.0.0.1:34812 conn2: { application: { name: "MongoDB Shell" }, driver: { name: "MongoDB Internal Client", version: "3.4.9" }, os: { type: "Linux", name: "CentOS Linux release 7.3.1611 (Core) ", architecture: "x86_64", version: "Kernel 3.10.0-514.26.2.el7.x86_64" } }2017-09-27T03:08:29.713+0800 I ACCESS   [conn2] Successfully authenticated as principal myTester on test2017-09-27T03:08:29.714+0800 I ACCESS   [conn2] Unauthorized: not authorized on admin to execute command { getLog: "startupWarnings" }2017-09-27T03:08:29.715+0800 I ACCESS   [conn2] Unauthorized: not authorized on admin to execute command { replSetGetStatus: 1.0, forShell: 1.0 }

• 用刚刚新建的用户myUserAdmin连接数据库

[root@localhost ~]# mongo --port 27017 -u "myUserAdmin" -p "abc123" --authenticationDatabase "admin"MongoDB shell version v3.4.9connecting to: mongodb://127.0.0.1:27017/MongoDB server version: 3.4.9>

创建新数据库test并在其中创建用户myTester

> use testswitched to db test> db.createUser(...   {...     user: "myTester",...     pwd: "xyz123",...     roles: [ { role: "readWrite", db: "test" },...              { role: "read", db: "reporting" } ]...   }... )Successfully added user: {    "user" : "myTester",    "roles" : [        {            "role" : "readWrite",            "db" : "test"        },        {            "role" : "read",            "db" : "reporting"        }    ]}> exitbye

• 使用新建的myTester用户连接数据库

[root@localhost ~]# mongo --port 27017 -u "myTester" -p "xyz123" --authenticationDatabase "test"MongoDB shell version v3.4.9connecting to: mongodb://127.0.0.1:27017/MongoDB server version: 3.4.9

参考Enable Auth

3.WARNING: /sys/kernel/mm/transparent_hugepage/enabled is ‘always’.与4.WARNING: /sys/kernel/mm/transparent_hugepage/defrag is ‘always’.

这两个问题是CentOS7特有的，因为从CentOS7版本开始会默认启用Transparent Huge Pages(THP)
Transparent Huge Pages(THP)本意是用来提升内存性能，但某些数据库厂商还是建议直接关闭THP(比如说Oracle、MariaDB、MongoDB等)，否则可能会导致性能出现下降。

• 查看THP状态

[root@localhost ~]#  cat /sys/kernel/mm/transparent_hugepage/defrag[always] madvise never[root@localhost ~]# cat /sys/kernel/mm/transparent_hugepage/enabled[always] madvise never

• 修改系统配置

[root@localhost ~]# vim /etc/rc.d/rc.local#!/bin/bash# THIS FILE IS ADDED FOR COMPATIBILITY PURPOSES## It is highly advisable to create own systemd services or udev rules# to run scripts during boot instead of using this file.## In contrast to previous versions due to parallel execution during boot# this script will NOT be run after all other services.## Please note that you must run 'chmod +x /etc/rc.d/rc.local' to ensure# that this script will be executed during boot.touch /var/lock/subsys/localif test -f /sys/kernel/mm/transparent_hugepage/enabled; then echo never > /sys/kernel/mm/transparent_hugepage/enabled fi if test -f /sys/kernel/mm/transparent_hugepage/defrag; then echo never > /sys/kernel/mm/transparent_hugepage/defrag fi[root@localhost ~]# chmod +x /etc/rc.d/rc.local

• 重启虚拟机

[root@localhost ~]# shutdown -r

• 再次查看THP状态

[root@localhost ~]#  cat /sys/kernel/mm/transparent_hugepage/defragalways madvise [never][root@localhost ~]# cat /sys/kernel/mm/transparent_hugepage/enabledalways madvise [never]

已经改为了禁用THP

• 启动mongod

[root@localhost ~]# mongod --auth --dbpath /var/lib/mongo2017-09-27T03:40:50.174+0800 I CONTROL  [initandlisten] MongoDB starting : pid=2381 port=27017 dbpath=/var/lib/mongo 64-bit host=localhost.localdomain2017-09-27T03:40:50.175+0800 I CONTROL  [initandlisten] db version v3.4.92017-09-27T03:40:50.175+0800 I CONTROL  [initandlisten] git version: 876ebee8c7dd0e2d992f36a848ff4dc50ee6603e2017-09-27T03:40:50.175+0800 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.0.1e-fips 11 Feb 20132017-09-27T03:40:50.175+0800 I CONTROL  [initandlisten] allocator: tcmalloc2017-09-27T03:40:50.175+0800 I CONTROL  [initandlisten] modules: none2017-09-27T03:40:50.175+0800 I CONTROL  [initandlisten] build environment:2017-09-27T03:40:50.175+0800 I CONTROL  [initandlisten]     distmod: rhel702017-09-27T03:40:50.175+0800 I CONTROL  [initandlisten]     distarch: x86_642017-09-27T03:40:50.175+0800 I CONTROL  [initandlisten]     target_arch: x86_642017-09-27T03:40:50.175+0800 I CONTROL  [initandlisten] options: { security: { authorization: "enabled" }, storage: { dbPath: "/var/lib/mongo" } }2017-09-27T03:40:50.195+0800 I -        [initandlisten] Detected data files in /var/lib/mongo created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.2017-09-27T03:40:50.195+0800 I STORAGE  [initandlisten] 2017-09-27T03:40:50.195+0800 I STORAGE  [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine2017-09-27T03:40:50.195+0800 I STORAGE  [initandlisten] **          See http://dochub.mongodb.org/core/prodnotes-filesystem2017-09-27T03:40:50.195+0800 I STORAGE  [initandlisten] wiredtiger_open config: create,cache_size=1455M,session_max=20000,eviction=(threads_min=4,threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),2017-09-27T03:40:50.689+0800 I CONTROL  [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.2017-09-27T03:40:50.689+0800 I CONTROL  [initandlisten] 2017-09-27T03:40:50.692+0800 I FTDC     [initandlisten] Initializing full-time diagnostic data capture with directory '/var/lib/mongo/diagnostic.data'2017-09-27T03:40:50.693+0800 I NETWORK  [thread1] waiting for connections on port 27017

• 进入数据库

[root@localhost ~]# mongoMongoDB shell version v3.4.9connecting to: mongodb://127.0.0.1:27017MongoDB server version: 3.4.9> 

修改数据库默认ip

mongodb在安装后默认的连接ip为127.0.0.1，为方便远程连接，在此将ip改为本机ip

[root@localhost ~]# vim /etc/mongod.conf# network interfacesnet:  port: 27017  bindIp: 192.168.230.134  # Listen to local interface only, comment to listen on all interfaces.

设置ip为 192.168.230.134，端口号还是默认的27017

修改数据库数据文件目录

还是在mongod.conf文件中修改

[root@localhost ~]# vim /etc/mongod.conf# Where and how to store data.storage:  dbPath: /var/lib/mongo  journal:    enabled: true

默认数据文件路径为/var/lib/mongo，这里我没做修改，有需要的可以按业务需求自行创建相应数据文件路径

重启mongod服务

[root@localhost ~]# systemctl restart mongod.service