mash-playbook/docs/services/nextcloud.md

# Nextcloud

[Nextcloud](https://nextcloud.com/) is the most popular self-hosted collaboration solution for tens of millions of users at thousands of organizations across the globe.


## Dependencies

This service requires the following other services:

- a [Postgres](postgres.md) database
- a [Traefik](traefik.md) reverse-proxy server
- a [Redis](redis.md) data-store (optional), installation details [below](#redis)


## Configuration

To enable this service, add the following configuration to your `vars.yml` file and re-run the [installation](../installing.md) process:

```yaml
########################################################################
#                                                                      #
# nextcloud                                                            #
#                                                                      #
########################################################################

nextcloud_enabled: true

nextcloud_hostname: mash.example.com
nextcloud_path_prefix: /nextcloud

# Redis configuration, as described below

########################################################################
#                                                                      #
# /nextcloud                                                           #
#                                                                      #
########################################################################
```

In the example configuration above, we configure the service to be hosted at `https://mash.example.com/nextcloud`.

You can remove the `nextcloud_path_prefix` variable definition, to make it default to `/`, so that the service is served at `https://mash.example.com/`.

### Redis

Redis can **optionally** be enabled to improve Nextcloud performance.
It's dubious whether using using Redis helps much, so we recommend that you **start without** it, for a simpler deployment.

To learn more, read the [Memory caching](https://docs.nextcloud.com/server/latest/admin_manual/configuration_server/caching_configuration.html) section of the Nextcloud documentation.

As described on the [Redis](redis.md) documentation page, if you're hosting additional services which require Redis on the same server, you'd better go for installing a separate Redis instance for each service. See [Creating a Redis instance dedicated to Nextcloud](#creating-a-redis-instance-dedicated-to-nextcloud).

If you're only running Nextcloud on this server and don't need to use Redis for anything else, you can [use a single Redis instance](#using-the-shared-redis-instance-for-nextcloud).

**Regardless** of the method of installing Redis, you may need to adjust your Nextcloud configuration file (e.g. `/mash/nextcloud/data/config/config.php`) to **add** this:

```php
  'memcache.distributed' => '\OC\Memcache\Redis',
  'memcache.locking' => '\OC\Memcache\Redis',
  'redis' => [
     'host' => 'REDIS_HOSTNAME_HERE',
     'port' => 6379,
  ],
```

Where `REDIS_HOSTNAME_HERE` is to be replaced with:

- `mash-nextcloud-redis`, when [Creating a Redis instance dedicated to Nextcloud](#creating-a-redis-instance-dedicated-to-nextcloud)
- `mash-redis`, when [using a single Redis instance](#using-the-shared-redis-instance-for-nextcloud).


#### Using the shared Redis instance for Nextcloud

To install a single (non-dedicated) Redis instance (`mash-redis`) and hook Nextcloud to it, add the following **additional** configuration:

```yaml
########################################################################
#                                                                      #
# redis                                                                #
#                                                                      #
########################################################################

redis_enabled: true

########################################################################
#                                                                      #
# /redis                                                               #
#                                                                      #
########################################################################


########################################################################
#                                                                      #
# nextcloud                                                            #
#                                                                      #
########################################################################

# Base configuration as shown above

# Point Nextcloud to the shared Redis instance
nextcloud_redis_hostname: "{{ redis_identifier }}"

# Make sure the Nextcloud service (mash-nextcloud.service) starts after the shared Redis service (mash-redis.service)
nextcloud_systemd_required_services_list_custom:
  - "{{ redis_identifier }}.service"

# Make sure the Nextcloud container is connected to the container network of the shared Redis service (mash-redis)
nextcloud_container_additional_networks_custom:
  - "{{ redis_identifier }}"

########################################################################
#                                                                      #
# /nextcloud                                                           #
#                                                                      #
########################################################################
```
This will create a `mash-redis` Redis instance on this host.

This is only recommended if you won't be installing other services which require Redis. Alternatively, go for [Creating a Redis instance dedicated to Nextcloud](#creating-a-redis-instance-dedicated-to-nextcloud).

#### Creating a Redis instance dedicated to Nextcloud

The following instructions are based on the [Running multiple instances of the same service on the same host](../running-multiple-instances.md) documentation.

Adjust your `inventory/hosts` file as described in [Re-do your inventory to add supplementary hosts](../running-multiple-instances.md#re-do-your-inventory-to-add-supplementary-hosts), adding a new supplementary host (e.g. if `nextcloud.example.com` is your main one, create `nectcloud.example.com-deps`).

Then, create a new `vars.yml` file for the

`inventory/host_vars/nextcloud.example.com-deps/vars.yml`:

```yaml
---

########################################################################
#                                                                      #
# Playbook                                                             #
#                                                                      #
########################################################################

# Put a strong secret below, generated with `pwgen -s 64 1` or in another way
# Various other secrets will be derived from this secret automatically.
mash_playbook_generic_secret_key: ''

# Override service names and directory path prefixes
mash_playbook_service_identifier_prefix: 'mash-nextcloud-'
mash_playbook_service_base_directory_name_prefix: 'nextcloud-'

########################################################################
#                                                                      #
# /Playbook                                                            #
#                                                                      #
########################################################################


########################################################################
#                                                                      #
# redis                                                                #
#                                                                      #
########################################################################

redis_enabled: true

########################################################################
#                                                                      #
# /redis                                                               #
#                                                                      #
########################################################################
```

This will create a `mash-nextcloud-redis` instance on this host with its data in `/mash/nextcloud-redis`.

Then, adjust your main inventory host's variables file (`inventory/host_vars/nextcloud.example.com/vars.yml`) like this:

```yaml
########################################################################
#                                                                      #
# nextcloud                                                            #
#                                                                      #
########################################################################

# Base configuration as shown above

# Point Nextcloud to its dedicated Redis instance
nextcloud_redis_hostname: mash-nextcloud-redis

# Make sure the Nextcloud service (mash-nextcloud.service) starts after its dedicated Redis service (mash-nextcloud-redis.service)
nextcloud_systemd_required_services_list_custom:
  - "mash-nextcloud-redis.service"

# Make sure the Nextcloud container is connected to the container network of its dedicated Redis service (mash-nextcloud-redis)
nextcloud_container_additional_networks_custom:
  - "mash-nextcloud-redis"

########################################################################
#                                                                      #
# /nextcloud                                                           #
#                                                                      #
########################################################################
```

###  Single-Sign-On / Authentik

Nextcloud supports Single-Sign-On (SSO) via LDAP, SAML, and OIDC. To make use of this you'll need a Identity Provider like [authentik](./authentik.md) or [Keycloak](./keycloak.md). The following assumes you use authentik.


**The official documentation of authentik to connect nextcloud via SAML seems broken**

MASH can connect Nextcloud with authentik via OIDC. The setup is quite straightforward, refer to [this blogpost by Jack](https://blog.cubieserver.de/2022/complete-guide-to-nextcloud-oidc-authentication-with-authentik/) for a full explanation.

In short you should

* Create a new provider in authentik and trimm the client secret to <64 characters
* Create an application in authentik using this provider
* Install the app `user_oidc` in Nextcloud
* Fill in the details from authentik in the app settings

**Troubleshooting**

If you encounter problems during login check (error message containes `SHA1 mismatch`) that
* Nextcloud users and authentik users do not have the same name -> if they do check `Use unique user ID` in the OIDC App settings

## Installation

If you've decided to install a dedicated Redis instance for Nextcloud, make sure to first do [installation](../installing.md) for the supplementary inventory host (e.g. `nextcloud.example.com-deps`), before running installation for the main one (e.g. `nextcloud.example.com`).

## Usage

After [installation](../installing.md), you should follow Nextcloud's setup wizard at the URL you've chosen.

You can choose any username/password for your account.

In **Storage & database**, you should choose PostgreSQL (changing the default **SQLite** choice), with the credentials you see after running `just run-tags print-nextcloud-db-credentials`

Once you've fully installed Nextcloud, you'd better adjust its default configuration (URL paths, trusted reverse-proxies, etc.) by running: `just run-tags adjust-nextcloud-config`


## Recommended other services

### Collabora Online

To integrate the [Collabora Online](collabora-online.md) office suite, first install it by following its dedicated documentation page.

Then add the following **additional** Nextcloud configuration:

```yaml
nextcloud_collabora_app_wopi_url: "{{ collabora_online_url }}"

# By default, various private IPv4 networks are whitelited to connect to the WOPI API (document serving API).
# If your Collabora Online installation does not live on the same server as Nextcloud,
# you may need to adjust the list of networks.
# If necessary, redefined the `nextcloud_collabora_app_wopi_allowlist` environment variable here.
```

There's **no need** to [re-run the playbook](../installing.md) after adjusting your `vars.yml` file.
You should, however run: `just run-tags install-nextcloud-app-collabora`

This will install and configure the [Office](https://apps.nextcloud.com/apps/richdocuments) app for Nextcloud.

You should then be able to click any document (`.doc`, `.odt`, `.pdf`, etc.) in Nextcloud Files and it should automatically open a Collabora Online editor.

You can also create new documents via the "plus" button.
Add Nextcloud support 2023-03-17 10:39:04 +01:00			`# Nextcloud`

			`[Nextcloud](https://nextcloud.com/) is the most popular self-hosted collaboration solution for tens of millions of users at thousands of organizations across the globe.`


			`## Dependencies`

			`This service requires the following other services:`

			`- a [Postgres](postgres.md) database`
			`- a [Traefik](traefik.md) reverse-proxy server`
Updated nextcloud docs Updated nextcloud docs for redis support 2023-03-29 12:57:45 +02:00			`- a [Redis](redis.md) data-store (optional), installation details [below](#redis)`
Add Nextcloud support 2023-03-17 10:39:04 +01:00

			`## Configuration`

			To enable this service, add the following configuration to your `vars.yml` file and re-run the [installation](../installing.md) process:

			```yaml
			`########################################################################`
			`# #`
Add Collabora Online support 2023-03-17 13:25:31 +01:00			`# nextcloud #`
Add Nextcloud support 2023-03-17 10:39:04 +01:00			`# #`
			`########################################################################`

			`nextcloud_enabled: true`

			`nextcloud_hostname: mash.example.com`
			`nextcloud_path_prefix: /nextcloud`

Updated nextcloud docs Updated nextcloud docs for redis support 2023-03-29 12:57:45 +02:00			`# Redis configuration, as described below`
Update nextcloud.md updated nextcloud service docs with redis support info 2023-03-25 16:05:21 +01:00
Add Nextcloud support 2023-03-17 10:39:04 +01:00			`########################################################################`
			`# #`
Add Collabora Online support 2023-03-17 13:25:31 +01:00			`# /nextcloud #`
Add Nextcloud support 2023-03-17 10:39:04 +01:00			`# #`
			`########################################################################`
			```

			In the example configuration above, we configure the service to be hosted at `https://mash.example.com/nextcloud`.

			You can remove the `nextcloud_path_prefix` variable definition, to make it default to `/`, so that the service is served at `https://mash.example.com/`.

Updated nextcloud docs Updated nextcloud docs for redis support 2023-03-29 12:57:45 +02:00			`### Redis`

Improve Redis integration section in Nextcloud docs 2023-04-03 09:21:27 +02:00			`Redis can optionally be enabled to improve Nextcloud performance.`
			`It's dubious whether using using Redis helps much, so we recommend that you start without it, for a simpler deployment.`

			`To learn more, read the [Memory caching](https://docs.nextcloud.com/server/latest/admin_manual/configuration_server/caching_configuration.html) section of the Nextcloud documentation.`

Updated nextcloud docs Updated nextcloud docs for redis support 2023-03-29 12:57:45 +02:00			`As described on the [Redis](redis.md) documentation page, if you're hosting additional services which require Redis on the same server, you'd better go for installing a separate Redis instance for each service. See [Creating a Redis instance dedicated to Nextcloud](#creating-a-redis-instance-dedicated-to-nextcloud).`

			`If you're only running Nextcloud on this server and don't need to use Redis for anything else, you can [use a single Redis instance](#using-the-shared-redis-instance-for-nextcloud).`

Add missing example path to Nextcloud config.php file 2023-04-03 09:23:25 +02:00			Regardless of the method of installing Redis, you may need to adjust your Nextcloud configuration file (e.g. `/mash/nextcloud/data/config/config.php`) to add this:
Improve Redis integration section in Nextcloud docs 2023-04-03 09:21:27 +02:00
			```php
			`'memcache.distributed' => '\OC\Memcache\Redis',`
			`'memcache.locking' => '\OC\Memcache\Redis',`
			`'redis' => [`
			`'host' => 'REDIS_HOSTNAME_HERE',`
			`'port' => 6379,`
			`],`
			```

			Where `REDIS_HOSTNAME_HERE` is to be replaced with:

			- `mash-nextcloud-redis`, when [Creating a Redis instance dedicated to Nextcloud](#creating-a-redis-instance-dedicated-to-nextcloud)
			- `mash-redis`, when [using a single Redis instance](#using-the-shared-redis-instance-for-nextcloud).


Updated nextcloud docs Updated nextcloud docs for redis support 2023-03-29 12:57:45 +02:00			`#### Using the shared Redis instance for Nextcloud`

			To install a single (non-dedicated) Redis instance (`mash-redis`) and hook Nextcloud to it, add the following additional configuration:

			```yaml
			`########################################################################`
			`# #`
			`# redis #`
			`# #`
			`########################################################################`

			`redis_enabled: true`

			`########################################################################`
			`# #`
			`# /redis #`
			`# #`
			`########################################################################`


			`########################################################################`
			`# #`
			`# nextcloud #`
			`# #`
			`########################################################################`

			`# Base configuration as shown above`

			`# Point Nextcloud to the shared Redis instance`
			`nextcloud_redis_hostname: "{{ redis_identifier }}"`

			`# Make sure the Nextcloud service (mash-nextcloud.service) starts after the shared Redis service (mash-redis.service)`
			`nextcloud_systemd_required_services_list_custom:`
			`- "{{ redis_identifier }}.service"`

			`# Make sure the Nextcloud container is connected to the container network of the shared Redis service (mash-redis)`
			`nextcloud_container_additional_networks_custom:`
			`- "{{ redis_identifier }}"`

			`########################################################################`
			`# #`
			`# /nextcloud #`
			`# #`
			`########################################################################`
			```
			This will create a `mash-redis` Redis instance on this host.

			`This is only recommended if you won't be installing other services which require Redis. Alternatively, go for [Creating a Redis instance dedicated to Nextcloud](#creating-a-redis-instance-dedicated-to-nextcloud).`

			`#### Creating a Redis instance dedicated to Nextcloud`

			`The following instructions are based on the [Running multiple instances of the same service on the same host](../running-multiple-instances.md) documentation.`

			Adjust your `inventory/hosts` file as described in [Re-do your inventory to add supplementary hosts](../running-multiple-instances.md#re-do-your-inventory-to-add-supplementary-hosts), adding a new supplementary host (e.g. if `nextcloud.example.com` is your main one, create `nectcloud.example.com-deps`).

			Then, create a new `vars.yml` file for the

			`inventory/host_vars/nextcloud.example.com-deps/vars.yml`:

			```yaml
			`---`

			`########################################################################`
			`# #`
			`# Playbook #`
			`# #`
			`########################################################################`

			# Put a strong secret below, generated with `pwgen -s 64 1` or in another way
			`# Various other secrets will be derived from this secret automatically.`
			`mash_playbook_generic_secret_key: ''`

			`# Override service names and directory path prefixes`
			`mash_playbook_service_identifier_prefix: 'mash-nextcloud-'`
			`mash_playbook_service_base_directory_name_prefix: 'nextcloud-'`

			`########################################################################`
			`# #`
			`# /Playbook #`
			`# #`
			`########################################################################`


			`########################################################################`
			`# #`
			`# redis #`
			`# #`
			`########################################################################`

			`redis_enabled: true`

			`########################################################################`
			`# #`
			`# /redis #`
			`# #`
			`########################################################################`
			```

			This will create a `mash-nextcloud-redis` instance on this host with its data in `/mash/nextcloud-redis`.

			Then, adjust your main inventory host's variables file (`inventory/host_vars/nextcloud.example.com/vars.yml`) like this:

			```yaml
			`########################################################################`
			`# #`
			`# nextcloud #`
			`# #`
			`########################################################################`

			`# Base configuration as shown above`

			`# Point Nextcloud to its dedicated Redis instance`
			`nextcloud_redis_hostname: mash-nextcloud-redis`

			`# Make sure the Nextcloud service (mash-nextcloud.service) starts after its dedicated Redis service (mash-nextcloud-redis.service)`
			`nextcloud_systemd_required_services_list_custom:`
			`- "mash-nextcloud-redis.service"`

			`# Make sure the Nextcloud container is connected to the container network of its dedicated Redis service (mash-nextcloud-redis)`
			`nextcloud_container_additional_networks_custom:`
			`- "mash-nextcloud-redis"`

			`########################################################################`
			`# #`
			`# /nextcloud #`
			`# #`
			`########################################################################`
			```
Improve Redis integration section in Nextcloud docs 2023-04-03 09:21:27 +02:00
Rework documentation SSO configuration is now described in the respective services 2023-04-22 13:29:51 +02:00			`### Single-Sign-On / Authentik`

			`Nextcloud supports Single-Sign-On (SSO) via LDAP, SAML, and OIDC. To make use of this you'll need a Identity Provider like [authentik](./authentik.md) or [Keycloak](./keycloak.md). The following assumes you use authentik.`


			`The official documentation of authentik to connect nextcloud via SAML seems broken`

			`MASH can connect Nextcloud with authentik via OIDC. The setup is quite straightforward, refer to [this blogpost by Jack](https://blog.cubieserver.de/2022/complete-guide-to-nextcloud-oidc-authentication-with-authentik/) for a full explanation.`

			`In short you should`

			`* Create a new provider in authentik and trimm the client secret to <64 characters`
			`* Create an application in authentik using this provider`
			* Install the app `user_oidc` in Nextcloud
			`* Fill in the details from authentik in the app settings`

			`Troubleshooting`

			If you encounter problems during login check (error message containes `SHA1 mismatch`) that
			* Nextcloud users and authentik users do not have the same name -> if they do check `Use unique user ID` in the OIDC App settings

Updated nextcloud docs Updated nextcloud docs for redis support 2023-03-29 12:57:45 +02:00			`## Installation`

			If you've decided to install a dedicated Redis instance for Nextcloud, make sure to first do [installation](../installing.md) for the supplementary inventory host (e.g. `nextcloud.example.com-deps`), before running installation for the main one (e.g. `nextcloud.example.com`).
Add Nextcloud support 2023-03-17 10:39:04 +01:00
			`## Usage`

			`After [installation](../installing.md), you should follow Nextcloud's setup wizard at the URL you've chosen.`

			`You can choose any username/password for your account.`

Fix print-nextcloud-db-credentials command 2023-03-17 10:44:27 +01:00			In Storage & database, you should choose PostgreSQL (changing the default SQLite choice), with the credentials you see after running `just run-tags print-nextcloud-db-credentials`
Add Nextcloud support 2023-03-17 10:39:04 +01:00
			Once you've fully installed Nextcloud, you'd better adjust its default configuration (URL paths, trusted reverse-proxies, etc.) by running: `just run-tags adjust-nextcloud-config`
Add Collabora Online support 2023-03-17 13:25:31 +01:00

			`## Recommended other services`

			`### Collabora Online`

			`To integrate the [Collabora Online](collabora-online.md) office suite, first install it by following its dedicated documentation page.`

			`Then add the following additional Nextcloud configuration:`

			```yaml
			`nextcloud_collabora_app_wopi_url: "{{ collabora_online_url }}"`

			`# By default, various private IPv4 networks are whitelited to connect to the WOPI API (document serving API).`
			`# If your Collabora Online installation does not live on the same server as Nextcloud,`
			`# you may need to adjust the list of networks.`
			# If necessary, redefined the `nextcloud_collabora_app_wopi_allowlist` environment variable here.
			```

			There's no need to [re-run the playbook](../installing.md) after adjusting your `vars.yml` file.
			You should, however run: `just run-tags install-nextcloud-app-collabora`

			`This will install and configure the [Office](https://apps.nextcloud.com/apps/richdocuments) app for Nextcloud.`

			You should then be able to click any document (`.doc`, `.odt`, `.pdf`, etc.) in Nextcloud Files and it should automatically open a Collabora Online editor.

			`You can also create new documents via the "plus" button.`