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