Collabora Online (LibreOffice Online) とNextcloudの環境にて、HAProxyを使ってスケールさせる設定についての発表です。 実験として2つのCollabora Onlineサーバに負荷分散する内容です。 関西オープンフォーラム2019でインターンのNirinarisantatra Randrianarivonyが発表したスライドです。 https://k-of.jp/backend/session/1316

1. LibreOffice Online:
大規模運用のための実験
ランドリアナリヴ二 二リナリサンタトゥラ
2019 年 11 月 9 日
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 Unported License

2. 2
Nirinarisantatra Randrianarivony
● From Madagascar
● Work at iCRAFT
– As intern
– Collabora Online and NextCloud integration
– Blockchain solution for enterprise using Hyperledger
● Graduated from Kobe Institute of Computing
– On September 2019
– JICA ABE Initiative Master Program

3. 3
Dive into the Indian Ocean

4. 4
Previous work
● Continuation of Murakami san’s work
– “Large-scale operation of LibreOffice Online”
– LibreOffice Conference in Spain (09/2019)
● How to make Nextcloud and Collabora Online
scalable?

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Lab architectureClient
NextCloud HAProxy
Collabora OnlineCloud hostingInternet

6. 6
Overview of Collabora Online
● Online office based on LibreOffice
● Free/Open Source Software
● Portable, supports all major browsers
● Windows, Mac OS X, Android, and GNU/Linux
● Uses Open Document Format (ODF) natively
– Also supports the use of dozens of file formats

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Difference with LibreOffice Online
● Collabora Online has the same functionality as
LibreOffice Online
● Collabora Online is a build image and support is
provided by Collabora Productivity
● Most of the development is done by Collabora
Productivity developers
● iCRAFT is Collabora Productivity's business
partner. Their services can be purchased at
iCRAFT.

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Benefit for users
● Client side requires only a web browser
● Can be used from PC, tablet or smartphone
● For collaborative works
● Protects their privacy and allows them to keep a
full control
● Cloud or on-premises environment

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Use cases

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Source: https://www.collaboraoffice.com/

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Source: https://www.collaboraoffice.com/

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Source: https://www.collaboraoffice.com/

13. 13
Configuration

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Overall configuration
Nextcloud
MySQL
PHP
NGINX
HAProxy
Collabora1
Collabora2 ...
Collaboran
Collabora Online
● SSL Termination
● Roundrobin
loadbalancing
● Listen on
80 & 443
● HTTPS redirect
● Listen on 9980
● HTTP only
● 2 servers (test)

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Nextcloud
● Install required packages:
$ sudo apt install nginx mysql-server mysql-client
● Create database:
$ sudo mysql -u root -p
> create database nextcloud;
> grant all privileges on nextcloud.* to nextcloud@localhost;
> flush privileges;
> exit
● Download Nextcloud:
$ cd /var/www/
$ sudo wget https://download.nextcloud.com/server/releases/latest.tar.bz2
$ sudo tar xvf latest.tar.bz2
$ sudo mkdir -p nextcloud/data/
$ sudo chown -R www-data:www-data /var/www/nextcloud/

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NGINX configuration
Filename: /etc/nginx/sites-enabled/nextcloud

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HAProxy
● Version 1.8.8
● Installation step:
$ sudo apt install haproxy
● Configuration file check:
$ sudo haproxy -c -V -f /etc/haproxy/haproxy.cfg

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HAProxy configuration
Filename: /etc/haproxy/haproxy.cfg

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Collabora Online installation
● Repository configuration
– Specify the Collabora repository, then:
$ sudo apt update
● Install binaries:
$ sudo apt install loolwsd collabora-online-brand
● Set admin password:
$ sudo loolconfig set-admin-password

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Collabora Online configuration
Filename: /etc/loolwsd/loolwsd.xml

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Demo

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Conclusion
● LibreOffice online based office provides many
advantages for users
● Combined with Nextcloud, it becomes a secure
and powerful collaborative tool
● It can be scaled-out using HAProxy

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Future work
● Improve availability
– HAProxy & Nextcloud <= SpoF
– Storage
● Performance
– Collabora Online performance testing
– Nextcloud tuning:
https://docs.nextcloud.com/server/17/admin_manua
l/installation/server_tuning.html

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Thank you
iCRAFT LibreOffice contact information:
librepc@icraft.jp
https://librepc.jp
https://icraft.jp