ansible : add alloy role

ansible/roles/alloy/templates/config.j2

@@ -0,0 +1,34 @@
+otelcol.receiver.filelog "file" {
+  include = ["/in/*.log"]
+  operators = [{
+      type = "regex_parser",
+      regex = `^(?P<timestamp>\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}.\d{2}:\d{2}) (?P<msg>.*)$`,
+      timestamp = {
+        parse_from = "attributes.timestamp",
+        layout = "%Y-%m-%dT%H:%M:%S%j",
+      },
+      message = {
+        parse_from = "attributes.msg",
+      },
+    },{
+      type = "remove",
+      field = "attributes.timestamp",
+  }]
+  output {
+    logs = [otelcol.exporter.syslog.outsyslog.input]
+  }
+}
+otelcol.exporter.file "outfile" {
+    path = "/out/output.log"
+}
+
+otelcol.exporter.syslog "outsyslog" {
+    endpoint = "slaithier-promax14"
+}
+
+otelcol.exporter.debug "default" {}
+
+logging {
+  level  = "{{ alloy_log_level }}"
+  format = "logfmt"
+}

ansible/roles/alloy/templates/default.j2

@@ -0,0 +1,8 @@
+# The configuration file holding the Grafana Alloy configuration.
+CONFIG_FILE="{{ alloy_config_file }}"
+
+# User-defined arguments to pass to the run command.
+CUSTOM_ARGS="{{ alloy_run_args }}"
+
+# Restart on system upgrade. Defaults to true.
+RESTART_ON_UPGRADE={{ alloy_restart_on_upgrade }}

ansible/roles/alloy/templates/systemd_service.j2

@@ -0,0 +1,19 @@
+[Unit]
+Description=Vendor-neutral programmable observability pipelines.
+Documentation=https://grafana.com/docs/alloy/
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+Restart=always
+User={{ alloy_username }}
+Group={{ alloy_groupname }}
+Environment=HOSTNAME=%H
+EnvironmentFile=/etc/default/alloy
+WorkingDirectory={{ alloy_working_directory }}
+ExecStart={{ alloy_binary_dir }}/alloy run $CUSTOM_ARGS --storage.path={{ alloy_working_directory }} $CONFIG_FILE
+ExecReload=/usr/bin/env kill -HUP $MAINPID
+TimeoutStopSec=20s
+
+[Install]
+WantedBy=multi-user.target