第17回関西LibreOffice勉強会でのNirinarisantatra Randrianarivonyの発表資料です。 関西オープンフォーラムよりも少し検証が進んでいます。 https://connpass.com/event/156106/

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
第 17 回関西 LibreOffice 勉強会
2019 年 11 月 30 日
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 Unported License

2. 2
ランドリアナリヴ二 二リナリサンタトゥラ
● From Madagascar
● Work at iCRAFT (intern)
– Collabora Online and Nextcloud integration
– Permissioned blockchain solution using Hyperledger
● Graduated from Kobe Institute of Computing
– On September 2019
– JICA’s ABE Initiative Master Program

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マダガスカルはどこですか？

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マダガスカル共和国
●
人口：2600万人
●
面積：日本の約1.6倍
●
首都：アンタナナリボ
●
公用語：
• マダガスカル語
• フランス語
●
宗教：
• キリスト教41％
• 伝統宗教52％
• イスラム教7％

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Previous work
● Continuation of Murakami san’s work
– “Large-scale operation of LibreOffice Online”
– LibreOffice Conference in Spain (09/2019)
https://www.slideshare.net/icraft-jp/experiment-for-
largescale-operation-of-libreoffice-online-2019-edition
● How to make Nextcloud and Collabora Online
scalable?

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Kansai Open Forum 2019
● Part of this work was presented during last KOF
– 大阪南港 ATC ITM 棟 (11 月 9 日 )
– “LibreOffice Online: 大規模運用のための実験”
– https://www.slideshare.net/icraft-jp/libreoffice-online-kof2019/
● Findings:
– Collaborative edition was not working as expected
– Is roundrobin algorithm the most appropriate?

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Lab architectureClients
Nextcloud HAProxy
Collabora Online
server farm
Cloud hostedInternet

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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
● Same functionalities as LibreOffice Online
● Build image and support is provided by
Collabora Productivity
● Mostly developed by Collabora Productivity
developers
● iCRAFT is Collabora Productivity's business
partner

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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/

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Configuration

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Overall configuration
Nextcloud
MySQL
PHP
NGINX
HAProxy
Collabora1
Collabora2 ...
Collaboran
● SSL termination
● Custom header
● Ports 80 & 443
● HTTPS redirect
● Reverse proxy
● Port 9980
● SSL disabled
● 2 servers (test)
Cluster

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Restrictions
Client
Collabora Online
server farm
1.Same Version
2.SSL disabled
3. HTTP Traffic
4. SSL Termination
Nextcloud HAProxy

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Nextcloud
Installation of required packages
For Debian based distros:
$ sudo apt install nginx mysql-server mysql-client
For Red Hat based distros:
$ sudo yum install nginx mariadb-server mariadb

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Nextcloud (2)
Database creation (MySQL/MariaDB):
$ sudo mysql -u root -p
> CREATE DATABASE nextcloud;
> CREATE USER icraft@localhost IDENTIFIED BY
'super-secret-password';
> GRANT ALL PRIVILEGES ON nextcloud.* TO
icraft@localhost;
> flush privileges;
> exit

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Nextcloud (3)
Nextcloud installation from source package:
$ 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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NGINX configuration (2)
Filename: /etc/nginx/sites-enabled/nextcloud

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HAProxy
1.Version 1.8.8 (Ubuntu 18.04.3 LTS)
2.Installation step:
$ sudo apt install haproxy
3.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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HAProxy: balance algorithm
hdr <header_name>
Selects a server based on an HTTP request
header. If there won’t be any value in the header,
it will work like the roundrobin algorithm.
Useful for linking users to servers by browser
type, query address, and so on.
Suitable for very specific narrow tasks.
Ref: https://cbonte.github.io/haproxy-dconv/1.8/configuration.html

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Collabora Online
1.Repository configuration
➢ Configure first the Collabora repository, then:
$ sudo apt update
2.Binaries installation:
$ sudo apt install loolwsd collabora-online-brand
1.Administrative password setup:
$ sudo loolconfig set-admin-password

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

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Nextcloud (4)

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Extra configuration
Filename: /etc/cron.d/certbot
➢ SSL certificate automatic update

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Demo

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Conclusion
● Online based LibreOffice 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 tuning
– 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