Set `matrix-prometheus-nginxlog-exporter` to `prometheus_nginxlog_exporter_identifier`

Signed-off-by: Suguru Hirahara <did🔑z6MkvVZk1A3KBApWJXv2Ju4H14ErDfRGxh8zxdXSZ4vACDg5>

docs/configuring-playbook-prometheus-grafana.md

@@ -248,7 +248,7 @@ As with all other services, you can find the logs in [systemd-journald](https://
 - `journalctl -fu matrix-prometheus` for Prometheus
 - `journalctl -fu matrix-prometheus-node-exporter` for Node Exporter
 - `journalctl -fu matrix-prometheus-postgres-exporter` for PostgreSQL Server Exporter
-- `journalctl -fu prometheus-nginxlog-exporter` for prometheus-nginxlog-exporter
+- `journalctl -fu matrix-prometheus-nginxlog-exporter` for prometheus-nginxlog-exporter
 - `journalctl -fu matrix-grafana` for Grafana
 
 ## More information

group_vars/matrix_servers

@@ -760,7 +760,7 @@ devture_systemd_service_manager_services_list_auto: |
     }] if prometheus_postgres_exporter_enabled else [])
     +
     ([{
-      'name': 'prometheus-nginxlog-exporter.service',
+      'name': (prometheus_nginxlog_exporter_identifier + '.service'),
       'priority': 3900,
       'restart_necessary': (prometheus_nginxlog_exporter_restart_necessary | bool),
       'groups': ['matrix', 'monitoring', 'prometheus-exporters', 'prometheus-nginxlog-exporter'],
@@ -5218,7 +5218,7 @@ prometheus_postgres_exporter_systemd_required_services_list_auto: |
 
 prometheus_nginxlog_exporter_enabled: false
 
-prometheus_nginxlog_exporter_identifier: prometheus-nginxlog-exporter
+prometheus_nginxlog_exporter_identifier: matrix-prometheus-nginxlog-exporter
 
 prometheus_nginxlog_exporter_hostname: "{{ matrix_server_fqn_matrix }}"