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342 lines
12 KiB
Markdown
342 lines
12 KiB
Markdown
# Installing Dendrite
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Dendrite can be run in one of two configurations:
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* **Polylith mode**: A cluster of individual components, dealing with different
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aspects of the Matrix protocol (see [WIRING.md](WIRING.md)). Components communicate with each other using internal HTTP APIs and [Apache Kafka](https://kafka.apache.org). This will almost certainly be the preferred model
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for large-scale deployments.
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* **Monolith mode**: All components run in the same process. In this mode,
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Kafka is completely optional and can instead be replaced with an in-process
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lightweight implementation called [Naffka](https://github.com/matrix-org/naffka). This will usually be the preferred model for low-volume, low-user
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or experimental deployments.
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Regardless of whether you are running in polylith or monolith mode, each Dendrite component that requires storage has its own database. Both Postgres
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and SQLite are supported and can be mixed-and-matched across components as
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needed in the configuration file.
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Be advised that Dendrite is still developmental and it's not recommended for
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use in production environments yet!
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## Requirements
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Dendrite requires:
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* Go 1.13 or higher
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* Postgres 9.5 or higher (if using Postgres databases, not needed for SQLite)
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If you want to run a polylith deployment, you also need:
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* Apache Kafka 0.10.2+
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## Building up a monolith deploment
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Start by cloning the code:
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```bash
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git clone https://github.com/matrix-org/dendrite
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cd dendrite
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```
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Then build it:
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```bash
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go build -o bin/dendrite-monolith-server ./cmd/dendrite-monolith-server
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go build -o bin/generate-keys ./cmd/generate-keys
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```
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## Building up a polylith deployment
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Start by cloning the code:
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```bash
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git clone https://github.com/matrix-org/dendrite
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cd dendrite
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```
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Then build it:
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```bash
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./build.sh
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```
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Install and start Kafka (c.f. [scripts/install-local-kafka.sh](scripts/install-local-kafka.sh)):
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```bash
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KAFKA_URL=http://archive.apache.org/dist/kafka/2.1.0/kafka_2.11-2.1.0.tgz
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# Only download the kafka if it isn't already downloaded.
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test -f kafka.tgz || wget $KAFKA_URL -O kafka.tgz
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# Unpack the kafka over the top of any existing installation
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mkdir -p kafka && tar xzf kafka.tgz -C kafka --strip-components 1
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# Start the zookeeper running in the background.
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# By default the zookeeper listens on localhost:2181
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kafka/bin/zookeeper-server-start.sh -daemon kafka/config/zookeeper.properties
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# Start the kafka server running in the background.
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# By default the kafka listens on localhost:9092
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kafka/bin/kafka-server-start.sh -daemon kafka/config/server.properties
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```
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On macOS, you can use [Homebrew](https://brew.sh/) for easier setup of Kafka:
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```bash
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brew install kafka
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brew services start zookeeper
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brew services start kafka
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```
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## Configuration
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### SQLite database setup
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Dendrite can use the built-in SQLite database engine for small setups.
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The SQLite databases do not need to be preconfigured - Dendrite will
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create them automatically at startup.
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### Postgres database setup
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Assuming that Postgres 9.5 (or later) is installed:
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* Create role, choosing a new password when prompted:
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```bash
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sudo -u postgres createuser -P dendrite
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```
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* Create the component databases:
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```bash
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for i in account device mediaapi syncapi roomserver serverkey federationsender publicroomsapi appservice naffka; do
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sudo -u postgres createdb -O dendrite dendrite_$i
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done
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```
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(On macOS, omit `sudo -u postgres` from the above commands.)
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### Server key generation
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Each Dendrite server requires unique server keys.
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Generate the self-signed SSL certificate for federation:
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```bash
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test -f server.key || openssl req -x509 -newkey rsa:4096 -keyout server.key -out server.crt -days 3650 -nodes -subj /CN=localhost
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```
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Generate the server signing key:
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```
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test -f matrix_key.pem || ./bin/generate-keys -private-key matrix_key.pem
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```
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### Configuration file
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Create config file, based on `dendrite-config.yaml`. Call it `dendrite.yaml`. Things that will need editing include *at least*:
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* The `server_name` entry to reflect the hostname of your Dendrite server
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* The `database` lines with an updated connection string based on your
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desired setup, e.g. replacing `component` with the name of the component:
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* For Postgres: `postgres://dendrite:password@localhost/component`
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* For SQLite on disk: `file:component.db` or `file:///path/to/component.db`
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* Postgres and SQLite can be mixed and matched.
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* The `use_naffka` option if using Naffka in a monolith deployment
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There are other options which may be useful so review them all. In particular,
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if you are trying to federate from your Dendrite instance into public rooms
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then configuring `key_perspectives` (like `matrix.org` in the sample) can
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help to improve reliability considerably by allowing your homeserver to fetch
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public keys for dead homeservers from somewhere else.
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## Starting a monolith server
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It is possible to use Naffka as an in-process replacement to Kafka when using
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the monolith server. To do this, set `use_naffka: true` in your `dendrite.yaml` configuration and uncomment the relevant Naffka line in the `database` section.
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Be sure to update the database username and password if needed.
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The monolith server can be started as shown below. By default it listens for
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HTTP connections on port 8008, so you can configure your Matrix client to use
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`http://localhost:8008` as the server. If you set `--tls-cert` and `--tls-key`
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as shown below, it will also listen for HTTPS connections on port 8448.
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```bash
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./bin/dendrite-monolith-server --tls-cert=server.crt --tls-key=server.key
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```
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## Starting a polylith deployment
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The following contains scripts which will run all the required processes in order to point a Matrix client at Dendrite. Conceptually, you are wiring together to form the following diagram:
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```
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/media +---------------------------+
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+----------->+------------->| dendrite-media-api-server |
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^ ^ +---------------------------+
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| | :7774
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| | /directory +----------------------------------+
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| | +--------->| dendrite-public-rooms-api-server |<========++
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| | | +----------------------------------+ ||
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| | | :7775 | ||
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| | | +<-----------+ ||
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| | | /sync +--------------------------+ ||
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| | +--------->| dendrite-sync-api-server |<================++
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| | | | +--------------------------+ ||
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| | | | :7773 | ^^ ||
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Matrix +------------------+ | | | | || client_data ||
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Clients --->| client-api-proxy |-------+ +<-----------+ ++=============++ ||
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+------------------+ | | | || ||
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:8008 | | CS API +----------------------------+ || ||
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| +--------->| dendrite-client-api-server |==++ ||
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| | +----------------------------+ ||
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| | :7771 | ||
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| +<-----------+ ||
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| | +----------------------+ room_event ||
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| +---------->| dendrite-room-server |===============++
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| | +----------------------+ ||
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| | :7770 ||
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| | ++==========================++
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| +<------------+ ||
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| | | VV
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| | +-----------------------------------+ Matrix
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| | | dendrite-federation-sender-server |------------> Servers
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| | +-----------------------------------+
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| | :7776
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+---------->+ +<-----------+
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Matrix +----------------------+ SS API +--------------------------------+
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Servers --->| federation-api-proxy |--------->| dendrite-federation-api-server |
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+----------------------+ +--------------------------------+
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:8448 :7772
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A --> B = HTTP requests (A = client, B = server)
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A ==> B = Kafka (A = producer, B = consumer)
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```
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### Client proxy
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This is what Matrix clients will talk to. If you use the script below, point
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your client at `http://localhost:8008`.
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```bash
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./bin/client-api-proxy \
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--bind-address ":8008" \
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--client-api-server-url "http://localhost:7771" \
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--sync-api-server-url "http://localhost:7773" \
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--media-api-server-url "http://localhost:7774" \
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--public-rooms-api-server-url "http://localhost:7775" \
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```
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### Federation proxy
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This is what Matrix servers will talk to. This is only required if you want
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to support federation.
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```bash
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./bin/federation-api-proxy \
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--bind-address ":8448" \
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--federation-api-url "http://localhost:7772" \
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--media-api-server-url "http://localhost:7774" \
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```
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### Client API server
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This is what implements message sending. Clients talk to this via the proxy in
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order to send messages.
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```bash
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./bin/dendrite-client-api-server --config=dendrite.yaml
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```
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### Room server
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This is what implements the room DAG. Clients do not talk to this.
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```bash
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./bin/dendrite-room-server --config=dendrite.yaml
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```
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### Sync server
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This is what implements `/sync` requests. Clients talk to this via the proxy
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in order to receive messages.
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```bash
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./bin/dendrite-sync-api-server --config dendrite.yaml
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```
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### Media server
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This implements `/media` requests. Clients talk to this via the proxy in
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order to upload and retrieve media.
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```bash
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./bin/dendrite-media-api-server --config dendrite.yaml
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```
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### Public room server
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This implements `/directory` requests. Clients talk to this via the proxy
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in order to retrieve room directory listings.
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```bash
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./bin/dendrite-public-rooms-api-server --config dendrite.yaml
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```
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### Federation API server
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This implements federation requests. Servers talk to this via the proxy in
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order to send transactions. This is only required if you want to support
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federation.
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```bash
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./bin/dendrite-federation-api-server --config dendrite.yaml
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```
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### Federation sender
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This sends events from our users to other servers. This is only required if
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you want to support federation.
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```bash
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./bin/dendrite-federation-sender-server --config dendrite.yaml
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```
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### Appservice server
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This sends events from the network to [application
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services](https://matrix.org/docs/spec/application_service/unstable.html)
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running locally. This is only required if you want to support running
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application services on your homeserver.
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```bash
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./bin/dendrite-appservice-server --config dendrite.yaml
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```
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### Key server
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This manages end-to-end encryption keys (or rather, it will do when it's
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finished).
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```bash
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./bin/dendrite-key-server --config dendrite.yaml
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```
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### User server
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This manages user accounts, device access tokens and user account data,
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amongst other things.
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```bash
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./bin/dendrite-user-api-server --config dendrite.yaml
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```
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