add postgres daemon files

src/modules/database/init_db.rb

@@ -1,8 +1,4 @@
 require 'sqlite3'
-# OS Requirements:
-#> sudo apt install -y postgresql-common
-#> sudo /usr/share/postgresql-common/pgdg/apt.postgresql.org.sh
-#> sudo apt install postgresql-16
 
 # Open a database
 db = SQLite3::Database.new "XPlatform_Chat.db"

src/modules/postgres/data/postgresql.conf

@@ -0,0 +1,98 @@
+# -----------------------------
+# PostgreSQL configuration file
+# -----------------------------
+#
+# This file consists of lines of the form:
+#
+#   name = value
+#
+# (The "=" is optional.)  Whitespace may be used.  Comments are introduced with
+# "#" anywhere on a line.  The complete list of parameter names and allowed
+# values can be found in the PostgreSQL documentation.
+#
+# The commented-out settings shown in this file represent the default values.
+# Re-commenting a setting is NOT sufficient to revert it to the default value;
+# you need to reload the server.
+#
+# This file is read on server startup and when the server receives a SIGHUP
+# signal.  If you edit the file on a running system, you have to SIGHUP the
+# server for the changes to take effect, run "pg_ctl reload", or execute
+# "SELECT pg_reload_conf()".  Some parameters, which are marked below,
+# require a server shutdown and restart to take effect.
+#
+# Any parameter can also be given as a command-line option to the server, e.g.,
+# "postgres -c log_connections=on".  Some parameters can be changed at run time
+# with the "SET" SQL command.
+#
+# Memory units:  B  = bytes            Time units:  us  = microseconds
+#                kB = kilobytes                     ms  = milliseconds
+#                MB = megabytes                     s   = seconds
+#                GB = gigabytes                     min = minutes
+#                TB = terabytes                     h   = hours
+#                                                   d   = days
+
+#------------------------------------------------------------------------------
+# FILE LOCATIONS
+#------------------------------------------------------------------------------
+# The default values of these variables are driven from the -D command-line
+# option or PGDATA environment variable, represented here as ConfigDir.
+
+#data_directory = '/var/lib/postgresql/16/main'          # use data in another directory (change requires restart)
+#hba_file = '/etc/postgresql/16/main/pg_hba.conf'        # host-based authentication file (change requires restart)
+#ident_file = '/etc/postgresql/16/main/pg_ident.conf'    # ident configuration file (change requires restart)
+# If external_pid_file is not explicitly set, no extra PID file is written.
+#external_pid_file = '/var/run/postgresql/16-main.pid'   # write an extra PID file (change requires restart)
+
+#------------------------------------------------------------------------------
+# CONNECTIONS AND AUTHENTICATION
+#------------------------------------------------------------------------------
+# - Connection Settings -
+
+listen_addresses = 'localhost'          # what IP address(es) to listen on;
+port = 5432                             # (change requires restart)
+max_connections = 80                    # (change requires restart)
+unix_socket_directories = '/var/run/postgresql' # comma-separated list of directories
+# - SSL -
+ssl = off
+
+#------------------------------------------------------------------------------
+# RESOURCE USAGE (except WAL)
+#------------------------------------------------------------------------------
+# - Memory -
+shared_buffers = 128MB                  # min 128kB (change requires restart)
+dynamic_shared_memory_type = posix      # (change requires restart)
+
+#------------------------------------------------------------------------------
+# WRITE-AHEAD LOG
+#------------------------------------------------------------------------------
+# - Settings -
+max_wal_size = 1GB
+min_wal_size = 80MB
+
+#------------------------------------------------------------------------------
+# REPORTING AND LOGGING
+#------------------------------------------------------------------------------
+# - Where to Log -
+log_destination = 'stderr'
+log_line_prefix = '%m [%p] %q%u@%d '
+log_timezone = 'Pacific/Auckland'
+
+# - Process Title -
+cluster_name = '16/main'        # added to process titles if nonempty (change requires restart)
+
+#------------------------------------------------------------------------------
+# CLIENT CONNECTION DEFAULTS
+#------------------------------------------------------------------------------
+datestyle = 'iso, mdy'
+timezone = 'Pacific/Auckland'
+# These settings are initialized by initdb, but they can be changed.
+lc_messages = 'en_US.UTF-8'             # locale for system error message
+lc_monetary = 'en_US.UTF-8'             # locale for monetary formatting
+lc_numeric = 'en_US.UTF-8'              # locale for number formatting
+lc_time = 'en_US.UTF-8'                 # locale for time formatting
+# default configuration for text search
+default_text_search_config = 'pg_catalog.english'
+
+#------------------------------------------------------------------------------
+# CUSTOMIZED OPTIONS
+#------------------------------------------------------------------------------

src/modules/postgres/wrapper_nostart.sh

@@ -0,0 +1,8 @@
+#!/bin/env bash
+# OS Requirements:
+#> sudo apt install -y postgresql-common
+#> sudo /usr/share/postgresql-common/pgdg/apt.postgresql.org.sh
+#> sudo apt install postgresql-16
+
+echo "Starting PostgreSQL server..."
+/usr/lib/postgresql/16/bin/postgres -D . --auth-local peer --auth-host scram-sha-256 --no-instructions