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102 lines
4.1 KiB
Markdown
102 lines
4.1 KiB
Markdown
# Setting up Synapse with Workers and Systemd
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This is a setup for managing synapse with systemd, including support for
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managing workers. It provides a `matrix-synapse` service for the master, as
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well as a `matrix-synapse-worker@` service template for any workers you
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require. Additionally, to group the required services, it sets up a
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`matrix-synapse.target`.
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See the folder [system](https://github.com/matrix-org/synapse/tree/develop/docs/systemd-with-workers/system/)
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for the systemd unit files.
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The folder [workers](https://github.com/matrix-org/synapse/tree/develop/docs/systemd-with-workers/workers/)
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contains an example configuration for the `generic_worker` worker.
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## Synapse configuration files
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See [the worker documentation](../workers.md) for information on how to set up the
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configuration files and reverse-proxy correctly.
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Below is a sample `generic_worker` worker configuration file.
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```yaml
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{{#include workers/generic_worker.yaml}}
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```
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Systemd manages daemonization itself, so ensure that none of the configuration
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files set either `daemonize` or `worker_daemonize`.
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The config files of all workers are expected to be located in
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`/etc/matrix-synapse/workers`. If you want to use a different location, edit
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the provided `*.service` files accordingly.
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There is no need for a separate configuration file for the master process.
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## Set up
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1. Adjust synapse configuration files as above.
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1. Copy the `*.service` and `*.target` files in [system](https://github.com/matrix-org/synapse/tree/develop/docs/systemd-with-workers/system/)
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to `/etc/systemd/system`.
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1. Run `systemctl daemon-reload` to tell systemd to load the new unit files.
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1. Run `systemctl enable matrix-synapse.service`. This will configure the
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synapse master process to be started as part of the `matrix-synapse.target`
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target.
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1. For each worker process to be enabled, run `systemctl enable
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matrix-synapse-worker@<worker_name>.service`. For each `<worker_name>`, there
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should be a corresponding configuration file.
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`/etc/matrix-synapse/workers/<worker_name>.yaml`.
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1. Start all the synapse processes with `systemctl start matrix-synapse.target`.
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1. Tell systemd to start synapse on boot with `systemctl enable matrix-synapse.target`.
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## Usage
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Once the services are correctly set up, you can use the following commands
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to manage your synapse installation:
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```sh
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# Restart Synapse master and all workers
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systemctl restart matrix-synapse.target
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# Stop Synapse and all workers
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systemctl stop matrix-synapse.target
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# Restart the master alone
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systemctl start matrix-synapse.service
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# Restart a specific worker (eg. generic_worker); the master is
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# unaffected by this.
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systemctl restart matrix-synapse-worker@generic_worker.service
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# Add a new worker (assuming all configs are set up already)
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systemctl enable matrix-synapse-worker@federation_writer.service
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systemctl restart matrix-synapse.target
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```
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## Hardening
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**Optional:** If further hardening is desired, the file
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`override-hardened.conf` may be copied from
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[contrib/systemd/override-hardened.conf](https://github.com/matrix-org/synapse/tree/develop/contrib/systemd/)
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in this repository to the location
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`/etc/systemd/system/matrix-synapse.service.d/override-hardened.conf` (the
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directory may have to be created). It enables certain sandboxing features in
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systemd to further secure the synapse service. You may read the comments to
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understand what the override file is doing. The same file will need to be copied to
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`/etc/systemd/system/matrix-synapse-worker@.service.d/override-hardened-worker.conf`
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(this directory may also have to be created) in order to apply the same
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hardening options to any worker processes.
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Once these files have been copied to their appropriate locations, simply reload
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systemd's manager config files and restart all Synapse services to apply the hardening options. They will automatically
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be applied at every restart as long as the override files are present at the
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specified locations.
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```sh
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systemctl daemon-reload
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# Restart services
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systemctl restart matrix-synapse.target
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```
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In order to see their effect, you may run `systemd-analyze security
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matrix-synapse.service` before and after applying the hardening options to see
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the changes being applied at a glance.
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