188 lines
6.4 KiB
Markdown
188 lines
6.4 KiB
Markdown
# Installing Dendrite
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Dendrite can be run in one of two configurations:
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* A cluster of individual components, dealing with different aspects of the
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Matrix protocol (see [WIRING.md](./WIRING.md)). Components communicate with
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one another via [Apache Kafka](https://kafka.apache.org).
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* A monolith server, in which all components run in the same process. In this
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configuration, Kafka can be replaced with an in-process implementation
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called [naffka](https://github.com/matrix-org/naffka).
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## Requirements
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- Go 1.8+
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- Postgres 9.5+
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- For Kafka (optional if using the monolith server):
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- Unix-based system (https://kafka.apache.org/documentation/#os)
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- JDK 1.8+ / OpenJDK 1.8+
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- Apache Kafka 0.10.2+ (see https://github.com/matrix-org/dendrite/blob/master/travis-install-kafka.sh for up-to-date version numbers)
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## Setting up a development environment
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Assumes Go 1.8 and JDK 1.8 are already installed and are on PATH.
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```bash
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# Get the code
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git clone https://github.com/matrix-org/dendrite
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cd dendrite
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# Build it
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go get github.com/constabulary/gb/...
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gb build
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```
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If using Kafka, install and start it:
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```bash
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MIRROR=http://apache.mirror.anlx.net/kafka/0.10.2.0/kafka_2.11-0.10.2.0.tgz
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# Only download the kafka if it isn't already downloaded.
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test -f kafka.tgz || wget $MIRROR -O kafka.tgz
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# Unpack the kafka over the top of any existing installation
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mkdir -p kafka && tar xzf kafka.tgz -C kafka --strip-components 1
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# Start the zookeeper running in the background.
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# By default the zookeeper listens on localhost:2181
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kafka/bin/zookeeper-server-start.sh -daemon kafka/config/zookeeper.properties
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# Start the kafka server running in the background.
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# By default the kafka listens on localhost:9092
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kafka/bin/kafka-server-start.sh -daemon kafka/config/server.properties
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```
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## Configuration
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### Postgres database setup
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Dendrite requires a postgres database engine, version 9.5 or later.
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* Create role:
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```bash
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sudo -u postgres createuser -P dendrite # prompts for password
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```
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* Create databases:
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```bash
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for i in account device mediaapi syncapi roomserver serverkey federationsender; do
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sudo -u postgres createdb -O dendrite dendrite_$i
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done
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```
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### Crypto key generation
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Generate the keys (unlike synapse, dendrite doesn't autogen yet):
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```bash
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# Generate a self-signed SSL cert for federation:
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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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# generate ed25519 signing key
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test -f matrix_key.pem || python3 > matrix_key.pem <<EOF
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import base64;
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r = lambda n: base64.b64encode(open("/dev/urandom", "rb").read(n)).decode("utf8");
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print("-----BEGIN MATRIX PRIVATE KEY-----")
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print("Key-ID:", "ed25519:" + r(3).rstrip("="))
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print(r(32))
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print("-----END MATRIX PRIVATE KEY-----")
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EOF
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```
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### Configuration
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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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* `server_name`
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* `database/*`
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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 `dendrite.yaml`.
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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 point your client at
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`http://localhost:8008`. If you set `--tls-cert` and `--tls-key` as shown
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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 multiprocess server
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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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DB:syncserver
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| roomserver_output_topic_dev
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/sync +--------------------------+ <=====================
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+--------->| dendrite-sync-api-server | ||
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| +--------------------------+ +----------------------+
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Matrix +------------------+ | :7773 query API | dendrite-room-server |--DB:roomserver
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Clients --->| client-api-proxy |---+ +----------------->+----------------------+
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+------------------+ | | :7770 ^^
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:8008 | CS API +----------------------------+ ||
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+--------->| dendrite-client-api-server |===================||
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| +----------------------------+ roomserver_input_topic_dev
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| :7771
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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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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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### Run a client api proxy
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This is what Matrix clients will talk to. If you use the script below, point your client at `http://localhost:8008`.
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```bash
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#!/bin/bash
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./bin/client-api-proxy \
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--bind-address ":8008" \
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--sync-api-server-url "http://localhost:7773" \
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--client-api-server-url "http://localhost:7771" \
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--media-api-server-url "http://localhost:7774"
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```
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### Run a client api
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This is what implements message sending. Clients talk to this via the proxy in 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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(If this fails with `pq: syntax error at or near "ON"`, check you are using at least postgres 9.5.)
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### Run a 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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### Run a sync server
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This is what implements `/sync` requests. Clients talk to this via the proxy 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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### Run a media server
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This implements `/media` requests. Clients talk to this via the proxy in 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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