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114 lines
5.2 KiB
Markdown
114 lines
5.2 KiB
Markdown
# Setting up Cactus Comments (optional)
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The playbook can install and configure the [Cactus Comments](https://cactus.chat) system for you.
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Cactus Comments is a **federated comment system** built on Matrix. It respects your privacy, and puts you in control.
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See the project's [documentation](https://cactus.chat/docs/getting-started/introduction/) to learn what it does and why it might be useful to you.
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The playbook contains 2 roles for configuring different pieces of the Cactus Comments system:
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- `matrix-cactus-comments` - the backend appservice integrating with the Matrix homeserver
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- `matrix-cactus-comments-client` - a static website server serving the [cactus-client](https://cactus.chat/docs/client/introduction/) static assets (`cactus.js` and `styles.css`)
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You can enable whichever component you need (typically both).
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## Configuration
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To enable Cactus Comments, add the following configuration to your `inventory/host_vars/matrix.example.com/vars.yml` file:
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```yaml
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#################
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## Cactus Comments ##
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#################
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# This enables the backend (appservice)
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matrix_cactus_comments_enabled: true
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# To allow guest comments without users needing to log in, you need to have guest registration enabled.
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# To do this you need to uncomment one of the following lines (depending if you are using Synapse or Dendrite as a homeserver)
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# If you don't know which one you use: The default is Synapse ;)
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# matrix_synapse_allow_guest_access: true
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# matrix_dendrite_allow_guest_access: true
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# This enables client assets static files serving on `https://matrix.example.com/cactus-comments`.
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# When the backend (appservice) is enabled, this is also enabled automatically,
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# but we explicitly enable it here.
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matrix_cactus_comments_client_enabled: true
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```
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### Adjusting the Cactus Comments' client URL
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By default, this playbook installs Cactus Comments' client on the `matrix.` subdomain, at the `/cactus-comments` path (https://matrix.example.com/cactus-comments). This makes it easy to install it, because it **doesn't require additional DNS records to be set up**. If that's okay, you can skip this section.
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By tweaking the `matrix_cactus_comments_client_hostname` and `matrix_cactus_comments_client_path_prefix` variables, you can easily make the service available at a **different hostname and/or path** than the default one.
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Example additional configuration for your `inventory/host_vars/matrix.example.com/vars.yml` file:
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```yaml
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# Change the default hostname and path prefix to host the client assets at a different location
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# These variables are used only if (`matrix_cactus_comments_client_enabled: true`)
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matrix_cactus_comments_client_hostname: cactus.example.com
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matrix_cactus_comments_client_path_prefix: /
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```
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## Adjusting DNS records
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If you've changed the default hostname, **you may need to adjust your DNS** records to point the Cactus Comments' client domain to the Matrix server.
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See [Configuring DNS](configuring-dns.md) for details about DNS changes.
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If you've decided to use the default hostname, you won't need to do any extra DNS configuration.
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## Installing
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After configuring the playbook and potentially [adjusting your DNS records](#adjusting-dns-records), run the [installation](installing.md) command: `just install-all` or `just setup-all`
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## Usage
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Upon starting Cactus Comments, a `bot.cactusbot` user account is created automatically.
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To get started, send a `help` message to the `@bot.cactusbot:example.com` bot to confirm it's working.
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Then, register a site by sending `register <YourSiteName>` (where `<YourSiteName>` is a unique identifier you choose. It does not have to match your domain). You will then be invited into a moderation room.
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Now you are good to go and can embed the comment section on your website!
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## Embed Cactus Comments
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The official [documentation](https://cactus.chat/docs/getting-started/quick-start/) provides a useful guide to embed Cactus Comments on your website.
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After including the JavaScript and CSS asset files, insert a `<div>` where you'd like to display the comment section:
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````html
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<div id="comment-section"></div>
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````
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Then, you need to initialize the comment section. Make sure to replace `example.com` with your base domain and `<YourSiteName>` with the one that has been registered above:
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```html
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<script>
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initComments({
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node: document.getElementById("comment-section"),
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defaultHomeserverUrl: "https://matrix.example.com:8448",
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serverName: "example.com",
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siteName: "<YourSiteName>",
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commentSectionId: "1"
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})
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</script>
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```
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### Adjust the domain name for self-hosting
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To have the assets served from your homeserver (not from `cactus.chat`), you need to adjust the domain name on the official documentation.
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Make sure to replace `example.com` with your base domain before you include the following lines, instead of the one provided by the official documentation:
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```html
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<script type="text/javascript" src="https://matrix.example.com/cactus-comments/cactus.js"></script>
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<link rel="stylesheet" href="https://matrix.example.com/cactus-comments/style.css" type="text/css">
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```
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**Note**: if the `matrix_cactus_comments_client_hostname` and `matrix_cactus_comments_client_path_prefix` variables are tweaked, you would need to adjust the URLs of the assets accordingly.
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