2，mongodb 的启动和安装

1，mongdb的启动
[root@localhost mongodb]# mkdir /db
[root@localhost mongodb]# mkdir /logs
[root@localhost mongodb]#
[root@localhost mongodb]#
[root@localhost mongodb]#
[root@localhost mongodb]# ./bin/mongod --dbpath /db --logpath=/logs --fork --port 27017
about to fork child process, waiting until server is ready for connections.
forked process: 51520
ERROR: child process failed, exited with error number 1
To see additional information in this output, start without the "--fork" option.
[root@localhost mongodb]# cd /logs/
[root@localhost logs]# ll
总用量 0

[root@localhost logs]#
[root@localhost logs]#
[root@localhost logs]# cd /usr/local/mongodb/
[root@localhost mongodb]# ll
总用量 120
drwxr-xr-x. 2 root root   231 8月  12 11:49 bin
-rw-r--r--. 1 root root 34520 8月   4 01:43 GNU-AGPL-3.0
-rw-r--r--. 1 root root  2149 8月   4 01:43 LICENSE-Community.txt
-rw-r--r--. 1 root root 16726 8月   4 01:43 MPL-2
-rw-r--r--. 1 root root  2195 8月   4 01:43 README
-rw-r--r--. 1 root root 57190 8月   4 01:43 THIRD-PARTY-NOTICES
[root@localhost mongodb]# ./bin/mongod --dbpath /db --logpath=/logs/log.log --fork --port 27017

about to fork child process, waiting until server is ready for connections.
forked process: 51555
child process started successfully, parent exiting
[root@localhost mongodb]#
[root@localhost bin]#
[root@localhost bin]# ./mongo
MongoDB shell version v4.0.1
connecting to: mongodb://127.0.0.1:27017
MongoDB server version: 4.0.1
Welcome to the MongoDB shell.
For interactive help, type "help".
For more comprehensive documentation, see
         http://docs.mongodb.org/
Questions? Try the support group
         http://groups.google.com/group/mongodb-user
Server has startup warnings:
2018-08-12T12:35:58.091+0800 I CONTROL  [initandlisten]
2018-08-12T12:35:58.091+0800 I CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.
2018-08-12T12:35:58.091+0800 I CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.
2018-08-12T12:35:58.091+0800 I CONTROL  [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2018-08-12T12:35:58.091+0800 I CONTROL  [initandlisten]
2018-08-12T12:35:58.091+0800 I CONTROL  [initandlisten] ** WARNING: This server is bound to localhost.
2018-08-12T12:35:58.091+0800 I CONTROL  [initandlisten] **          Remote systems will be unable to connect to this server.
2018-08-12T12:35:58.091+0800 I CONTROL  [initandlisten] **          Start the server with --bind_ip <address> to specify which IP
2018-08-12T12:35:58.091+0800 I CONTROL  [initandlisten] **          addresses it should serve responses from, or with --bind_ip_all to
2018-08-12T12:35:58.091+0800 I CONTROL  [initandlisten] **          bind to all interfaces. If this behavior is desired, start the
2018-08-12T12:35:58.091+0800 I CONTROL  [initandlisten] **          server with --bind_ip 127.0.0.1 to disable this warning.
2018-08-12T12:35:58.091+0800 I CONTROL  [initandlisten]
2018-08-12T12:35:58.092+0800 I CONTROL  [initandlisten]
2018-08-12T12:35:58.092+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2018-08-12T12:35:58.092+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
2018-08-12T12:35:58.092+0800 I CONTROL  [initandlisten]
2018-08-12T12:35:58.092+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2018-08-12T12:35:58.092+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
2018-08-12T12:35:58.092+0800 I CONTROL  [initandlisten]

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