c0308307e2
This is an attempt at optimizing service startup. The effect is most pronounced when many services are restarted one by one. The systemd service manager role sometimes does this - for example when `just install-service synapse` runs. In such cases, a 5-second delay for each Synapse worker service (or other bridge/bot service that waits on the homeserver) quickly adds up to a lot. When services are all stopped fully and then started, the effect is not so pronounced, because `matrix-synapse.service` starts first and pulls all worker services (defined as `Wants=` for it). Later on, when the systemd service manager role "starts" these worker services, they're started already. Even if they had a 5-second wait each, it would have happened in parallel.
79 lines
4.1 KiB
Django/Jinja
79 lines
4.1 KiB
Django/Jinja
#jinja2: lstrip_blocks: "True"
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[Unit]
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Description=Dendrite server
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{% for service in matrix_dendrite_systemd_required_services_list %}
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Requires={{ service }}
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After={{ service }}
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{% endfor %}
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{% for service in matrix_dendrite_systemd_wanted_services_list %}
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Wants={{ service }}
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{% endfor %}
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DefaultDependencies=no
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[Service]
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Type=simple
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Environment="HOME={{ devture_systemd_docker_base_systemd_unit_home_path }}"
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ExecStartPre=-{{ devture_systemd_docker_base_host_command_sh }} -c '{{ devture_systemd_docker_base_host_command_docker }} stop --time={{ devture_systemd_docker_base_container_stop_grace_time_seconds }} matrix-dendrite 2>/dev/null || true'
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ExecStartPre=-{{ devture_systemd_docker_base_host_command_sh }} -c '{{ devture_systemd_docker_base_host_command_docker }} rm matrix-dendrite 2>/dev/null || true'
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{% if (devture_postgres_identifier + '.service') in matrix_dendrite_systemd_required_services_list %}
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# Dendrite is too quick to start in relation to its Postgres dependency.
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# Delay Dendrite startup to avoid failing with: "failed to connect to accounts db" ("pq: the database system is starting up").
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ExecStartPre={{ matrix_host_command_sleep }} 5
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{% endif %}
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ExecStartPre={{ devture_systemd_docker_base_host_command_docker }} create \
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--rm \
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--name=matrix-dendrite \
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--log-driver=none \
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--user={{ matrix_user_uid }}:{{ matrix_user_gid }} \
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--cap-drop=ALL \
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--read-only \
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--tmpfs=/tmp:rw,noexec,nosuid,size={{ matrix_dendrite_tmp_directory_size_mb }}m \
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--network={{ matrix_dendrite_container_network }} \
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{% if matrix_dendrite_container_http_host_bind_address and matrix_dendrite_http_bind_port %}
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-p {{ matrix_dendrite_container_http_host_bind_address }}:{{ matrix_dendrite_http_bind_port }} \
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{% endif %}
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{% if matrix_dendrite_container_https_host_bind_address and matrix_dendrite_https_bind_port %}
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-p {{ matrix_dendrite_container_https_host_bind_address }}:{{ matrix_dendrite_https_bind_port }} \
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{% endif %}
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--mount type=bind,src={{ matrix_dendrite_config_dir_path }},dst=/data,ro \
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--mount type=bind,src={{ matrix_dendrite_storage_path }},dst=/matrix-media-store-parent,bind-propagation=slave \
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--mount type=bind,src={{ matrix_dendrite_nats_storage_path }},dst=/matrix-nats-store,bind-propagation=slave \
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--label-file={{ matrix_dendrite_base_path }}/labels \
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{% for volume in matrix_dendrite_container_additional_volumes %}
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--mount type={{ volume.type | default('bind' if '/' in volume.src else 'volume') }},src={{ volume.src }},dst={{ volume.dst }}{{ (',' + volume.options) if volume.options else '' }} \
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{% endfor %}
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{% for arg in matrix_dendrite_container_arguments %}
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{{ arg }} \
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{% endfor %}
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{{ matrix_dendrite_docker_image }} \
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-config /data/dendrite.yaml \
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{{ matrix_dendrite_process_extra_arguments|join(' ') }} \
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{% if matrix_dendrite_http_bind_address %}
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-http-bind-address {{ matrix_dendrite_http_bind_address }}
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{% endif %}
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{% if matrix_dendrite_https_bind_address %}
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-https-bind-address {{ matrix_dendrite_https_bind_address }}
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{% endif %}
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{% for network in matrix_dendrite_container_additional_networks %}
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ExecStartPre={{ devture_systemd_docker_base_host_command_docker }} network connect {{ network }} matrix-dendrite
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{% endfor %}
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ExecStart={{ devture_systemd_docker_base_host_command_docker }} start --attach matrix-dendrite
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# Intentional delay, so that the homeserver can manage to start and various services
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# that depend on it (After/Requires) may only start after the homeserver is up and running.
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ExecStartPost=-{{ matrix_host_command_sleep }} 3
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ExecStop=-{{ devture_systemd_docker_base_host_command_sh }} -c '{{ devture_systemd_docker_base_host_command_docker }} stop --time={{ devture_systemd_docker_base_container_stop_grace_time_seconds }} matrix-dendrite 2>/dev/null || true'
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ExecStop=-{{ devture_systemd_docker_base_host_command_sh }} -c '{{ devture_systemd_docker_base_host_command_docker }} rm matrix-dendrite 2>/dev/null || true'
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ExecReload={{ devture_systemd_docker_base_host_command_docker }} exec matrix-dendrite /bin/sh -c 'kill -HUP 1'
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Restart=always
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RestartSec=30
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SyslogIdentifier=matrix-dendrite
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[Install]
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WantedBy=multi-user.target
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