feat(synapse): add deployment method virtualenv

roles/synapse/defaults/main/systemd.yml

@@ -0,0 +1,53 @@
+---
+synapse_systemd_name: "synapse.service"
+synapse_systemd_service_directory: /etc/systemd/system
+synapse_systemd_service_file: >-2
+  {{ synapse_systemd_service_directory }}/{{ synapse_systemd_name }}
+
+synapse_systemd_state: >-2
+  {{ (synapse_state == 'present') | ternary('started', 'stopped') }}
+synapse_systemd_enabled: >-2
+  {{ (synapse_state == 'present') | bool }}
+
+synapse_systemd_unit_description: "Synapse matrix homeserver"
+synapse_systemd_service_type: notify
+synapse_systemd_service_exec_start: >-2
+  {{ synapse_venv_path }}/bin/synapse_homeserver \
+    --config-path={{ synapse_homeserver_config_file }}
+synapse_systemd_service_exec_stop: >-2
+  {{ synapse_venv_path }}/bin/synctl \
+    stop {{ synapse_homeserver_config_file }}
+synapse_systemd_service_exec_reload: >-2
+  /usr/bin/env kill -HUP $MAINPID
+synapse_systemd_service_restart: on-failure
+
+synapse_systemd_unit_after:
+  - "network.target"
+synapse_systemd_unit_wants: []
+synapse_systemd_install_wanted_by: "default.target"
+
+# Hardening
+synapse_systemd_service_read_write_paths:
+  - "{{ synapse_base_path }}"
+  - "{{ synapse_data_path }}"
+  - "{{ synapse_media_store_path }}"
+  - "{{ synapse_log_path }}"
+synapse_systemd_service_restrict_address_families:
+  - "AF_INET"
+  - "AF_INET6"
+  - "AF_UNIX"
+synapse_systemd_service_protect_system: strict
+synapse_systemd_service_protect_home: true
+synapse_systemd_service_protect_clock: true
+synapse_systemd_service_protect_hostname: true
+synapse_systemd_service_protect_protect_kernel_logs: true
+synapse_systemd_service_protect_protect_kernel_modules: true
+synapse_systemd_service_protect_protect_kernel_tunables: true
+synapse_systemd_service_protect_protect_control_groups: true
+
+synapse_systemd_service_restrict_namespaces: true
+synapse_systemd_service_restrict_suid_sgid: true
+
+synapse_systemd_service_remove_ipc: true
+synapse_systemd_service_lock_personality: true
+synapse_systemd_service_no_new_privileges: true