Improve openrc init script, add port setting

* Ensure the log directory exists with openrc

* Add a port setting to configure the port the agent listens on

* Switch to RealDictCursor

* Fix type for connection timeout

openrc/pgmon.initd

@@ -11,6 +11,13 @@ PGMON_USER="${PGMON_USER:-postgres}"
 PGMON_GROUP="${PGMON_GROUP:-$PGMON_USER}"
 CONFIG_FILE="/etc/pgmon/${agent_name}.yml"
 
+output_log=/var/log/pgmon/${SVCNAME}.log
+error_log=/var/log/pgmon/${SVCNAME}.err
+
+start_pre() {
+    checkpath -f -m 0644 -o "${PGMON_USER}:${PGMON_GROUP}" "${output_log}" "${error_log}"
+}
+
 command="/usr/bin/pgmon"
 command_args="'$CONFIG_FILE'"
 command_background="true"