ArangoDB-系统要求

在本章中，我们将讨论ArangoDB的系统需求。

ArangoDB的系统要求如下−

• 安装了Ubuntu的VPS服务器
• 内存：1GB；CPU:2.2GHz

对于本教程中的所有命令，我们都使用了一个ubuntu16.04（xenial）的实例，该实例的内存为1GB，其中一个cpu的处理能力为2.2ghz。本教程中的所有arangosh命令都针对arangodbversion3.1.27进行了测试。

如何安装ArangoDB？

在本节中，我们将了解如何安装ArangoDB。ArangoDB是为许多操作系统和发行版预先构建的。有关更多详细信息，请参阅ArangoDB文档。如前所述，在本教程中，我们将使用ubuntu16.04×64。

第一步是下载其存储库的公钥−

# wget https://www.arangodb.com/repositories/arangodb31/
xUbuntu_16.04/Release.key

输出

--2017-09-03 12:13:24-- https://www.arangodb.com/repositories/arangodb31/xUbuntu_16.04/Release.key 
Resolving https://www.arangodb.com/
(www.arangodb.com)... 104.25.1 64.21, 104.25.165.21,
2400:cb00:2048:1::6819:a415, ... 
Connecting to https://www.arangodb.com/
(www.arangodb.com)|104.25. 164.21|:443... connected. 
HTTP request sent, awaiting response... 200 OK 
Length: 3924 (3.8K) [application/pgpkeys]
Saving to: ‘Release.key’
Release.key 100%[===================>] 3.83K - .-KB/s in 0.001s
2017-09-03 12:13:25 (2.61 MB/s) - ‘Release.key’ saved [39 24/3924]

The important point is that you should see the 释放键 saved at the end of the output.

让我们使用以下代码行安装保存的密钥−

#sudo apt key add Release.key

输出

OK

运行以下命令添加apt存储库并更新索引−

# sudo apt-add-repository 'deb
https://www.arangodb.com/repositories/arangodb31/xUbuntu_16.04/ /'
# sudo apt-get update

最后一步，我们可以安装ArangoDB−

# sudo apt-get install arangodb3

输出

Reading package lists... Done
Building dependency tree
Reading state information... Done
The following package was automatically installed and is no longer required:
grub-pc-bin
Use 'sudo apt autoremove' to remove it.
The following NEW packages will be installed:
arangodb3
0 upgraded, 1 newly installed, 0 to remove and 17 not upgraded.
Need to get 55.6 MB of archives.
After this operation, 343 MB of additional disk space will be used.

Press 输入. Now the process of installing ArangoDB will start −

Get:1 https://www.arangodb.com/repositories/arangodb31/xUbuntu_16.04
arangodb3 3.1.27 [55.6 MB]
Fetched 55.6 MB in 59s (942 kB/s)
Preconfiguring packages ...
Selecting previously unselected package arangodb3.
(Reading database ... 54209 files and directories currently installed.)
Preparing to unpack .../arangodb3_3.1.27_amd64.deb ...

Unpacking arangodb3 (3.1.27) ...
Processing triggers for systemd (229-4ubuntu19) ...
Processing triggers for ureadahead (0.100.0-19) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up arangodb3 (3.1.27) ...
Database files are up-to-date.

ArangoDB安装即将完成时，将出现以下屏幕−

Here, you will be asked to provide a password for the ArangoDB 根 user. Note it down carefully.

Select the 对 option when the following dialog box appears −

When you click 是的 as in the above dialog box, the following dialog box appears. Click 是的 here.

您还可以使用以下命令检查ArangoDB的状态−

# sudo systemctl status arangodb3

输出

arangodb3.service - LSB: arangodb
Loaded: loaded (/etc/init.d/arangodb3; bad; vendor pre set: enabled)
Active: active (running) since Mon 2017-09-04 05:42:35 UTC;
4min 46s ago
Docs: man:systemd-sysv-generator(8)
Process: 2642 ExecStart=/etc/init.d/arangodb3 start (code = exited,
status = 0/SUC
Tasks: 22
Memory: 158.6M
CPU: 3.117s
CGroup: /system.slice/arangodb3.service
├─2689 /usr/sbin/arangod --uid arangodb
--gid arangodb --pid-file /va
└─2690 /usr/sbin/arangod --uid arangodb
--gid arangodb --pid-file /va
Sep   04 05:42:33   ubuntu-512  systemd[1]:        Starting LSB:  arangodb...
Sep   04 05:42:33   ubuntu-512  arangodb3[2642]:  * Starting arango database server a
Sep   04 05:42:35   ubuntu-512  arangodb3[2642]:   {startup} starting up in daemon mode
Sep   04 05:42:35   ubuntu-512  arangodb3[2642]:   changed working directory for child
Sep   04 05:42:35   ubuntu-512  arangodb3[2642]:   ...done. 
Sep   04 05:42:35   ubuntu-512  systemd[1]:        StartedLSB: arang odb.
Sep   04 05:46:59   ubuntu-512  systemd[1]:        Started LSB: arangodb. lines 1-19/19 (END)

ArangoDB现在可以使用了。

要调用arangosh终端，请在终端中键入以下命令−

# arangosh

输出

Please specify a password:

Supply the 根 password created at the time of installation −

_
__ _ _ __ __ _ _ __ __ _ ___ | |
/ | '__/ _ | ’ \ / ` |/ _ / | ’
| (| | | | (| | | | | (| | () _ \ | | |
_,|| _,|| ||_, |_/|/| ||
|__/

arangosh (ArangoDB 3.1.27 [linux] 64bit, using VPack 0.1.30, ICU 54.1, V8
5.0.71.39, OpenSSL 1.0.2g 1 Mar 2016)

Copyright (c) ArangoDB GmbH

Pretty printing values.
Connected to ArangoDB 'http+tcp://127.0.0.1:8529' version: 3.1.27 [server],
database: '_system', username: 'root'

Please note that a new minor version '3.2.2' is available
Type 'tutorial' for a tutorial or 'help' to see common examples
127.0.0.1:8529@_system> exit

要从ArangoDB注销，请键入以下命令−

127.0.0.1:8529@_system> exit

输出

Uf wiederluege! Na shledanou! Auf Wiedersehen! Bye Bye! Adiau! ¡Hasta luego!
Εις το επανιδείν!

להתראות ! Arrivederci! Tot ziens! Adjö! Au revoir! さようなら До свидания! Até
Breve! !خداحافظ