Integrate Collabora Online with Nextcloud on Ubuntu without Docker

This tutorial is going to show you how to install Collabora Online on Ubuntu and then integrate it with an existing Nextcloud server without using Docker.

Collabora Online is a self-hostable and LibreOffice-based open-source online office suite. Its features include:

  • Basic editing
  • High fidelity, WYSIWYG rendering
  • Supports DOC, DOCX, PPT, PPTX, XLS, XLSX, ODF document format
  • Import and view Visio, Publisher and 100+ more
  • Shared Editing

Collabora is a big contributor to the LibreOffice project. All of the Collabora Online codes will be eventually included in LibreOffice.

Note: This tutorial works on Ubuntu 22.04, 20.04 and 18.04. If you are using another Ubuntu version, you can install Collobaora Online with Docker.

collabora online nextcloud server


It’s assumed that you have already set up a Nextcloud server, which can be on any Linux distribution. If you haven’t already done so, then you can check out the following easy-to-understand guides.

The Collabora Online server and Nextcloud server can be on the same machine or on two different machines. This tutorial shows how to install Collabora online server on Ubuntu without using Docker. Then integrate it with an existing Nextcloud server.

Step 1: Install Collabora Online on Ubuntu From the Official Repository

Collabora has an official package repository for Ubuntu 22.04, 20.04 and 18.04. Run the following command to add it to your Ubuntu system.

Ubuntu 22.04

echo 'deb ./' | sudo tee /etc/apt/sources.list.d/collabora.list

Ubuntu 20.04

echo 'deb ./' | sudo tee /etc/apt/sources.list.d/collabora.list

Ubuntu 18.04

echo 'deb ./' | sudo tee /etc/apt/sources.list.d/collabora.list

Then run the following command to download and import Collabora public key, which allows APT package manager to verify the integrity of packages downloaded from this repository.

sudo apt-key adv --keyserver --recv-keys 0C54D189F4BA284D

ubuntu Collabora public key

If you can’t import the public key with the above command, you can use the following command to download and import the key.

wget && sudo apt-key add repomd.xml.key

Since this repository uses HTTPS connection, we need to install the apt-transport-https and ca-certificates package, so the APT package manager can establish secure connection to the repository.

sudo apt install apt-transport-https ca-certificates

Now update local package index and install Collabora Online. coolwsd is the Collabora Online WebSocket Daemon.

sudo apt update
sudo apt install coolwsd code-brand

Step 2: Configure LibreOffice Online WebSocket Daemon

After they are installed, you can check the status of coolwsd.

systemctl status coolwsd

LibreOffice Online WebSocket Daemon

Hint: If the above command didn’t quit immediately, you can press the Q key to make it quit.

As you can see, it failed to start. We can check the journal to see why this happened.

sudo journalctl -eu coolwsd

Sample output:

Apr 21 16:13:06 ubuntu coolwsd[13842]: File not found: /etc/coolwsd/ca-chain.cert.pem
Apr 21 16:13:06 ubuntu systemd[1]: coolwsd.service: Main process exited, code=exited, status
Apr 21 16:13:06 ubuntu systemd[1]: coolwsd.service: Failed with result 'exit-code'.
Apr 21 16:13:07 ubuntu systemd[1]: coolwsd.service: Service hold-off time over, scheduling r
Apr 21 16:13:07 ubuntu systemd[1]: coolwsd.service: Scheduled restart job, restart counter i
Apr 21 16:13:07 ubuntu systemd[1]: Stopped LibreOffice Online WebSocket Daemon.
Apr 21 16:13:07 ubuntu systemd[1]: coolwsd.service: Start request repeated too quickly.
Apr 21 16:13:07 ubuntu systemd[1]: coolwsd.service: Failed with result 'exit-code'.
Apr 21 16:13:07 ubuntu systemd[1]: Failed to start LibreOffice Online WebSocket Daemon.

By default, coolwsd enables TLS connection. However, it didn’t find a TLS certificate file, hence the start failure. It’s better to disable TLS in coolwsd and terminate TLS at a reverse proxy. The coolwsd configuration file is located at /etc/coolwsd/coolwsd.xml. However, it’s an XML file, which is not easy to read and edit. We can use the coolconfig tool to change configurations.

Run the following command to disable TLS in coolwsd.

sudo coolconfig set ssl.enable false

And enable TLS termination at the reverse proxy.

sudo coolconfig set ssl.termination true

By default, coolwsd only allows known hosts to access its service. To allow Nextcloud to access the service, run the following command to add your Nextcloud hostname to the whitelist.

sudo coolconfig set

You can also enable the admin account for coolwsd with the following command. You will need to set a username and password for the admin account.

sudo coolconfig set-admin-password

Restart coolwsd for the changes to take effect.

sudo systemctl restart coolwsd

Now it should be running without errors.

systemctl status coolwsd


Collabora Online WebSocket Daemon ubuntu

Step 3: Set up Reverse Proxy

Nextcloud server requires a TLS certificate on the Collabora Online, so we will need to create a virtual host, give the virtual host a domain name, set up a reverse proxy and install TLS certificate. We can use either Apache or Nginx to achieve this.


Install Apache web server with the following command:

sudo apt install apache2

Run the following command to create an Apache virtual host file for Collabora Online.

sudo nano /etc/apache2/sites-available/collabora.conf

Put the following text into the file. Replace the domain name with your actual domain name for Collabora Online. Don’t forget to create an A record for this sub-domain.

<VirtualHost *:80>
  Options -Indexes

  ErrorLog "/var/log/apache2/collabora_error"
  # Encoded slashes need to be allowed
  AllowEncodedSlashes NoDecode

  # keep the host
  ProxyPreserveHost On

  # static html, js, images, etc. served from coolwsd
  # loleaflet/browser is the client part of Collabora Online
  ProxyPass           /loleaflet retry=0
  ProxyPassReverse    /loleaflet
  ProxyPass           /browser retry=0
  ProxyPassReverse    /browser

  # WOPI discovery URL
  ProxyPass           /hosting/discovery retry=0
  ProxyPassReverse    /hosting/discovery

  # Capabilities
  ProxyPass           /hosting/capabilities retry=0
  ProxyPassReverse    /hosting/capabilities

  # Main websocket
  ProxyPassMatch "/cool/(.*)/ws$" ws://$1/ws nocanon

  # Admin Console websocket
  ProxyPass   /cool/adminws ws://

  # Download as, Fullscreen presentation and Image upload operations
  ProxyPass           /cool
  ProxyPassReverse    /cool


Save and close the file. To be able to proxy traffic using Apache, we need to enable some Apache modules.

sudo a2enmod proxy proxy_wstunnel proxy_http

Enable this virtual host with the following command:

sudo a2ensite collabora.conf

Then restart Apache.

sudo systemctl restart apache2


Install Nginx on Ubuntu with the following command:

sudo apt install nginx

Create a virtual host file for Collabora Online.

sudo nano /etc/nginx/conf.d/collabora.conf

Put the following text into the file. Replace the domain name with your actual domain name for Collabora Online. Don’t forget to create an A record for this domain name.

server {
    listen 80;
    listen [::]:80;

    error_log /var/log/nginx/collabora.error;

   # static files
    location ^~ /browser {
        proxy_pass http://localhost:9980;
        proxy_set_header Host $http_host;
    location ^~ /loleaflet {
        proxy_pass http://localhost:9980;
        proxy_set_header Host $http_host;

    # WOPI discovery URL
    location ^~ /hosting/discovery {
        proxy_pass http://localhost:9980;
        proxy_set_header Host $http_host;

    # Capabilities
    location ^~ /hosting/capabilities {
        proxy_pass http://localhost:9980;
        proxy_set_header Host $http_host;

    # main websocket
    location ~ ^/cool/(.*)/ws$ {
        proxy_pass http://localhost:9980;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_set_header Host $http_host;
        proxy_read_timeout 36000s;

    # download, presentation and image upload
    location ~ ^/(c|l)ool {
        proxy_pass http://localhost:9980;
        proxy_set_header Host $http_host;

    # Admin Console websocket
    location ^~ /cool/adminws {
        proxy_pass http://localhost:9980;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_set_header Host $http_host;
        proxy_read_timeout 36000s;

Save and close the file. Then test Nginx configurations.

sudo nginx -t

If the test is successful, reload Nginx server.

sudo systemctl reload nginx

Step 4: Obtain and Install TLS Certificate

Now let’s obtain a free TLS certificate from Let’s encrypt. Run the following commands to install Let’s Encrypt client (certbot) from the default software repository.

sudo apt install certbot

If you use Apache web server, then you also need to install the Certbot Apache plugin.

sudo apt install python3-certbot-apache

Then issue the following command to obtain a free TLS/SSL certificate.

sudo certbot --apache --agree-tos --redirect --hsts --staple-ocsp --email [email protected] -d

If you use Nginx web server, then you need to install the Certbot Nginx plugin.

sudo apt install python3-certbot-nginx

Then use the Nginx plugin to obtain and install the certificate by running the following command.

sudo certbot --nginx --agree-tos --redirect --hsts --staple-ocsp --email [email protected] -d

You will see the following text indicating that you have successfully obtained a TLS certificate.

collabora nginx reverse proxy https

Final Step: Connect Nextcloud to Collabora Online

In your Nextcloud dashboard, go to the Apps page (

Next, go to Office & Text section, find the Nextcloud Office app, and click Download and Enable button. (Note: The Collabora Online app has been renamed to Nextcloud Office.

collabora online nextcloud office

After this app is enabled, go to Nextcloud Settings page -> Administration -> Click Nextcloud Office tab on the left. By default, it uses the built-in CODE server, which is not suitable for production use. We need to select Use your own server and enter the domain name of your Collabora Online including https:// prefix, then click Save button.

collabora online nextcloud integration docker

In the advance settings, you can also set OOXML as the default format, so the files will be compatible with Microsoft Office software.

office open xml format collabora

Now when you click the add button (+) in Nextcloud, you will be able to create Word, spreadsheet, and presentation documents right from your Nextcloud server. (Note: Firefox has a problem loading .docx files in Nextcloud because Firefox won’t allow SVG image file to load CSS files. You can use Google Chrome or Chromium browser. )

nextcloud online office

collabora online development edition nextcloud integration

The coolwsd admin console is available at You need to enter the username and password, which were created in step 2.

loolwsd admin console


You can check the logs of coolwsd to find clues. Perhaps it’s not running.

sudo journalctl -eu coolwsd

And check the logs of web server.

  • Apache: /var/log/apache2/collabora_error
  • Nginx: /var/log/nginx/collabora.error

If the coolwsd admin console displays the “Server has been shutdown. Please reload the webpage” error, and you find the following error in the coolwsd journal log,

ERR Looks like SSL/TLS traffic on plain http port

It’s probably because you specified HTTPS protocol in the Nginx configuration file (/etc/nginx/conf.d/collabora.conf).

You should configure Nginx to use the plain HTTP protocol to connect to port 9980.

For HAProxy Users

HAProxy is a high-performance reverse proxy. If you use HAProxy on your server, you might have additional problems.

If Nextcloud tells you that it could not establish connection to the Collabora Online server, it might be that your Nginx server is running behind a reverse proxy like HAProxy and you have the following two lines in the /etc/nginx/nginx.conf.

real_ip_header proxy_protocol;

This means that Nginx expects HTTP connection from the reverse proxy. You should edit the /etc/nginx/conf.d/collaboara.conf file and add proxy_protocol to the listen directive.

listen ssl http2 proxy_protocol;

Then edit the /etc/hosts file and add a static DNS record like below. Repalce with the public IP address of the server. should be pointed to the public IP address of your server. Don’t point it to

Wrapping Up

That’s it! I hope this tutorial helped you install, run Collabora Online on Ubuntu and integrate it with Nextcloud. As always, if you found this post useful, then subscribe to our free newsletter. You can also follow us on Twitter or like our Facebook page.

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36 Responses to “Integrate Collabora Online with Nextcloud on Ubuntu without Docker

  • Michael
    2 years ago

    That is so cool, thank you for sharing that!

  • Works perfectly! Thank you!

  • Hi Linuxbabe

    Thanks for the info.

    Do you have a config to install nextcloud and Collabora office on the same server, with no docker.

    Tx in Advance


    • This article is for integrating Nextcloud and Collabora without Docker and it works when Nextcloud and Collabora run on the same server.

      • Hi Xiao Guoan and firstly thanks for your guide.
        I would ask you if is it possibile to show the Letsencrypt enabled virtualhost config content.

        Thanks again!


        • If you use Nginx, then Let’s Encrypt client (certbot) automatically re-configure the Nginx virtual host file (/etc/nginx/conf.d/collabora.conf) to support TLS.

          If you use Apache, then Let’s Encrypt client (certbot) automatically create an SSL virtual host file (/etc/apache2/sites-enabled/collabora-le-ssl.conf).

  • Quang Mai
    2 years ago

    Hi Xiao,

    Thanks for this article instruction. I have a question about integrating Nextcloud and Collabora run on the same server.
    Let’s say I have 1 static IP: 111.222.333.444 points to
    So if we install Collabora on the same server which means 111.222.333.444, how do we set up the A record for DNS which will point to the same IP address: 111.222.333.444? Is there any conflict between these?

    Once again, thank you very much for this.
    Kind regards,

  • Hi,

    I’ve got Nextcloud 18.0.6 and the last version (4.2.4) of Collabora – CODE running on the same server and it really works fine.

    Nevertheless, there is only the english dictionary installed. Can you tell me how to install another dictionary ?

    Thanks for your help.


    • Francesc Ortiz
      2 years ago

      I have the same problem, I need to install another lenguage, but I try differents ways and tutorials and nothing happened, always show english dict. alone.

  • Andrew Wilson
    2 years ago

    Totally AWESOME instructions. Worked first time!

    I set this up in an lxc ubuntu 18.04 container running on an ubuntu 20.04 server. It connected with my lxc Nextcloud container (running on the same server). I setup my domain names, run the certbot, fixed a type (my bad…) and it just WORKED!

    You are friggin AWESOME!!! Thank you very much. 🙂

  • Muqtadir Kamal
    2 years ago

    I already i was installed locally system, i don’t have and DNS name, i m using oracle vm virtualbox , everything i was install successfully only stack in edit online doucment “Integrate Collabora Online” , what i have to enter ? “Use you own server URL (and Port) of Collabora Online-server” and i am able open the “Collabora Online admin panal” “loleaflet/dist/admin/admin.html”

    Kindly help this regards

    • Nextcloud requires you to use https connection with Collabora. If you don’t want to spend money on a domain name, you can just use LibreOffice on your Linux desktop, and don’t use Collabora Online.

      I would recommend buying a domain name (which can be as low as $1.37/year), if you really want to tinker with server software

  • Michael
    2 years ago

    Thanks for the great tutorial – what would I have to change if I installed Collabora and Nextcloud on 2 different hosts?
    The admin interface of Collabora already answers me externally.
    I use different external addresses for Nextcloud and Collabora 2.
    The Collabora service works too! The Request: https://localhost:8890 – gives the answer: OK
    After adding it to Nextcloud, I get the error: “Could not connect to the Collabora Online server.”I think a problem with the proxy?

  • ThumbOne
    2 years ago

    Thanks for this brilliant guide. I love it! I have Nexcloud and Collabora on the one box now. But I use lighttpd and it doesn’t work.

    When I point Nextcloud to the Collabora URL under: URL (and Port) of Collabora Online-server as you have and click Save it reports “Could not establish connection to the Collabora Online server.”

    I see nothing in the Nextcloud log. So what I’m wondering is how, further to diagnose this. I tried simply testing some of he configured URLS. For example on the WPI discovery URL, I do see a beautiful page which lets me discover the WOPI services. Nice. It’s a rich JS driven page. On the WOPI capabilities URL, I get lovely terse response which renders in raw format as: {“convert-to”:{“available”:true},”hasMobileSupport”:true,”hasProxyPrefix”:false,”hasTemplateSaveAs”:false,”hasTemplateSource”:true,”productName”:”Collabora Online Development Edition”,”productVersion”:”4.2.6″,”productVersionHash”:”ed4f732″}.

    On the Admin console URL alas I get no response, the browser just sits and whirs waiting. That is not encouraging.

    I am wondering what does Nextcloud test to see that the server is active? And what diagnostic tips might you provide? Be mighty appreciative for any tips.

    What do you see if you navigate to https:collaboraserver.tld/lool/adminws? I don’t get a response alas. And would love to know if I should expect one and if so, what and how to diagnose why its not there.

    There is but one subtle difference between all the web server configs listed, they all reverse proxy to localhost:9980, but the admin console and main websocket have an Upgrade header set. I wonder if something there went wrong and how to find out if it did. I use lighttpd, and its mod_proxy:, it’s comparable syntax seems to be proxy.header = ( “upgrade” => “enable” ).

    The trick is understanding what this upgrade command does in Apache, and in Nginx.

  • Haiqal
    1 year ago

    Thanks for the great tutorial. I already i was installed locally system, i don’t have and DNS name, i m using oracle vm virtualbox , everything i was install successfully only stack in edit online doucment “Integrate Collabora Online” , but when i edit doc files, always like this, hopefully i have the solutions from here

  • Rashmi
    1 year ago

    Hi, I have installed nextcloud with LAMP stack on ubuntu 20.04 on LXC container in Proxmox. Nextcloud is working great using haproxy under Pfsense but I cannot get Collabora to work using Apache. I saw you post if I installed it using nginx, should I delete apache to install nginx?

    Is there a way to get apache to work using haproxy also, if so how?


  • This is a wonderful guide! Thank you! Do you know if there is any way to allow two domains to connect to the CODE server? I tried several things, but have only been able to get one at a time to work.

  • Michael
    1 year ago

    Thank you very much, you’re awesome.

  • Thank you for the amazing tutorials for both NextCloud and Collabora.
    I’ve installed both on Ubuntu 20.04 in digitalOcean
    Nextcloud works fine but when I try to open a docx document the nextcloud can’t reach the server and stays stuck at0% during the connection.
    In the parameters, everything seems to be fine, I don’t understand…

  • Great instructions LinuxBabe!!! i was running docker and was able to switch to native with these instructions!

    Happy Installs!!!

  • Xiao, do you know OxOffice Online?
    It works smoother than Collabora Online

  • Hey there, I recently tried to install the Collabora-Server step by step.
    Everything went smooth. Even If I open the subdomain where the Server is pointing, it gives me a “OK” back. Even more the Nextcloud Admin panel tell that it can reach the office Server. (see screenshots)

    But the time I try to open or create a Document it says “Document loading failed”

    The Collabora Errorlog outputs the following:

    [error] 44569#44569: *800 open() "/usr/share/nginx/html/browser/1e92cc5/cool.html" failed (2: No such file or directory), client:, server:, request: "POST /browser/1e92cc5/cool.html?WOPISrc=http%3A%2F%2Fnext.htb%2Fnextcloud%2Findex.php%2Fapps%2Frichdocuments%2Fwopi%2Ffiles%2F259_oc3fgu6buwj7&title=test.odt&lang=de&closebutton=1&revisionhistory=1 HTTP/1.1", host: "", referrer: "http://next.htb/"

    Does somebody know whats going on there and how to fix it?


    • Pedro Souza
      5 months ago

      To correct this error:

      [error] 44569#44569: *800 open() "/usr/share/nginx/html/browser/1e92cc5/cool.html

      On new versions of Collabora change Nginx proxy lines:

      location ^~ /loleaflet


      location ^~ /browser

      And lines

      location ~ ^/lool


      location ~ ^/cool

      Don’t forget to restart Nginx.

    • Abongile
      5 seconds ago

      Hi There, same problem; “Document loading failed” and admin is blank. Is there something missing like an index.html file /var/www/*, how does one resolve the issue? Thanks again.

  • dysonsphere
    4 months ago

    is there any advantage to running Collabora this was vs using the Docker install?

  • Thanks for all your job, I already did my mail server without any problem.
    After I thinks some change happened because I must replace lool my cool for all the installation.
    But at the end I can’t open admin console or a file.
    I got a blank screen on admin panel and when I open a file I got “document loading failed”.

    On my debian syslog I got:

    Apr 11 10:20:06 ns394665 coolwsd[643981]: wsd-643981-644001 2022-04-11 10:20:06.832040 +0000 [ websrv_poll ] WRN  convert-to: Requesting address is denied: XXX.XXX.XXX.XXX| wsd/COOLWSD.cpp:3015
  • Bernieo
    1 month ago

    Hi this is really good and still relevant today. Is there any chance you can make it perfect for me by adding an entry for HAProxy?

    • Bernieo
      1 month ago

      2x nextcloud vm’s, 1x CollaboraOffice vm with Apache2 virtualhost, all on Proxmox routing through pfsense vm with haproxy module installed. All vms access internet okay and can access ACME directly. but I need fornt and backend configs to allow nexcloud 1&2 to access the Collabora vm.

      Any pointers would be appreciated

  • Duffman
    2 weeks ago

    –To add MS Office fonts to Collabora–

    1. sudo apt install ttf-mscorefont-installer
    2. sudo fc-cache -f -v
    3. sudo coolconfig update-system-template
    4. sudo systemctl restart coolwsd
    5. sudo systemctl restart php7.4-fpm
    6. sudo systemctl restart nginx

  • Vanessa M Pires
    1 week ago

    It’s working like a charm. Thanks!

  • brook kelly
    7 days ago

    Thank you very much for sharing an informative blog with the installation processes in such detail. I am very happy about your patience and willingness to help make this installation with such detail and dexterity. Greetings from the United Kingdom to you! Very successful !!! and you know about this logo design??

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