title: postgresql.conf contains errors
body: <p>I am trying to implement Kafka Connect service with Debezium Postgres Connector. Make changes for 'postgresql.conf' file such as:</p>
  <ul>
  <li>wal_level='logical'</li>
  <li>max_wal_senders='1'</li>
  <li>max_replication_slots='1'</li>
  <li>shared_preload_libraries='decoderbufs,wal2json'</li>
  </ul>
  <p>After stopping and starting the Postgres service. The Postgres service failed to start. And unable to access 'psql'.</p>
  <pre><code>[postgres@supervm data]$ psql
  psql: error: connection to server on socket &quot;/var/run/postgresql/.s.PGSQL.5432&quot; failed: No such file or directory
          Is the server running locally and accepting connections on that socket?
  [postgres@supervm data]$ 
  </code></pre>
  <p>Check the Postgres log:</p>
  <pre><code>2022-02-23 01:34:52.719 +08 [13458] LOG:  configuration file &quot;/var/lib/pgsql/14/data/postgresql.conf&quot; contains errors; unaffected changes were applied    
  2022-02-23 01:59:08.899 +08 [13458] LOG:  received fast shutdown request     
  2022-02-23 01:59:08.939 +08 [13458] LOG:  aborting any active transactions   
  2022-02-23 01:59:09.142 +08 [13458] LOG:  background worker &quot;logical replication launcher&quot; (PID 13467) exited with exit code 1
  2022-02-23 01:59:09.161 +08 [13462] LOG:  shutting down
  2022-02-23 01:59:09.476 +08 [13458] LOG:  database system is shut down
  </code></pre>
  <p>How I can resolve this matter. Been web searching but there are not many on this error.</p>
  <p>I am a newbie to change data capture using Debezium. Any help is really valuable to me.</p>
  <p>The content of postgresql.conf:</p>
  <pre><code>#------------------------------------------------------------------------------
  # 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 = 'ConfigDir'           # use data in another directory
                                          # (change requires restart)
  #hba_file = 'ConfigDir/pg_hba.conf'     # host-based authentication file
                                          # (change requires restart)
  #ident_file = 'ConfigDir/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 = ''                 # write an extra PID file
                                          # (change requires restart)
  
  
  #------------------------------------------------------------------------------
  # CONNECTIONS AND AUTHENTICATION
  #------------------------------------------------------------------------------
  
  # - Connection Settings -
  
  #listen_addresses = 'localhost'         # what IP address(es) to listen on;
                                          # comma-separated list of addresses;
                                          # defaults to 'localhost'; use '*' for all
                                          # (change requires restart)
  #port = 5432                            # (change requires restart)
  max_connections = 100                   # (change requires restart)
  #superuser_reserved_connections = 3     # (change requires restart)
  #unix_socket_directories = '/var/run/postgresql, /tmp'  # comma-separated list of directories
                                          # (change requires restart)
  #unix_socket_group = ''                 # (change requires restart)
  #unix_socket_permissions = 0777         # begin with 0 to use octal notation
                                          # (change requires restart)
  #bonjour = off                          # advertise server via Bonjour
                                          # (change requires restart)
  #bonjour_name = ''                      # defaults to the computer name
                                          # (change requires restart)
  
  # - TCP settings -
  # see &quot;man tcp&quot; for details
  
  #tcp_keepalives_idle = 0                # TCP_KEEPIDLE, in seconds;
                                          # 0 selects the system default
  #tcp_keepalives_interval = 0            # TCP_KEEPINTVL, in seconds;
                                          # 0 selects the system default
  #tcp_keepalives_count = 0               # TCP_KEEPCNT;
                                          # 0 selects the system default
  #tcp_user_timeout = 0                   # TCP_USER_TIMEOUT, in milliseconds;
                                          # 0 selects the system default
  
  #client_connection_check_interval = 0   # time between checks for client
                                          # disconnection while running queries;
                                          # 0 for never
  
  # - Authentication -
  
  #authentication_timeout = 1min          # 1s-600s
  #password_encryption = scram-sha-256    # scram-sha-256 or md5
  #db_user_namespace = off
  
  # GSSAPI using Kerberos
  #krb_server_keyfile = 'FILE:${sysconfdir}/krb5.keytab'
  #krb_caseins_users = off
  
  # - SSL -
  
  #ssl = off
  #ssl_ca_file = ''
  #ssl_cert_file = 'server.crt'
  #ssl_crl_file = ''
  #ssl_crl_dir = ''
  #ssl_key_file = 'server.key'
  #ssl_ciphers = 'HIGH:MEDIUM:+3DES:!aNULL' # allowed SSL ciphers
  #ssl_prefer_server_ciphers = on
  #ssl_ecdh_curve = 'prime256v1'
  #ssl_min_protocol_version = 'TLSv1.2'
  #ssl_max_protocol_version = ''
  #ssl_dh_params_file = ''
  #ssl_passphrase_command = ''
  #ssl_passphrase_command_supports_reload = off
  
  
  #------------------------------------------------------------------------------
  # RESOURCE USAGE (except WAL)
  #------------------------------------------------------------------------------
  
  # - Memory -
  
  shared_buffers = 128MB                  # min 128kB
                                          # (change requires restart)
  #huge_pages = try                       # on, off, or try
                                          # (change requires restart)
  #huge_page_size = 0                     # zero for system default
                                          # (change requires restart)
  #temp_buffers = 8MB                     # min 800kB
  #max_prepared_transactions = 0          # zero disables the feature
                                          # (change requires restart)
  # Caution: it is not advisable to set max_prepared_transactions nonzero unless
  # you actively intend to use prepared transactions.
  #work_mem = 4MB                         # min 64kB
  #hash_mem_multiplier = 1.0              # 1-1000.0 multiplier on hash table work_mem
  #maintenance_work_mem = 64MB            # min 1MB
  #autovacuum_work_mem = -1               # min 1MB, or -1 to use maintenance_work_mem
  #logical_decoding_work_mem = 64MB       # min 64kB
  #max_stack_depth = 2MB                  # min 100kB
  #shared_memory_type = mmap              # the default is the first option
                                          # supported by the operating system:
                                          #   mmap
                                          #   sysv
                                          #   windows
                                          # (change requires restart)
  dynamic_shared_memory_type = posix      # the default is the first option
                                          # supported by the operating system:
                                          #   posix
                                          #   sysv
                                          #   windows
                                          #   mmap
                                          # (change requires restart)
  #min_dynamic_shared_memory = 0MB        # (change requires restart)
  
  # - Disk -
  
  #temp_file_limit = -1                   # limits per-process temp file space
                                          # in kilobytes, or -1 for no limit
  
  # - Kernel Resources -
  
  #max_files_per_process = 1000           # min 64
                                          # (change requires restart)
  
  # - Cost-Based Vacuum Delay -
  
  #vacuum_cost_delay = 0                  # 0-100 milliseconds (0 disables)
  #vacuum_cost_page_hit = 1               # 0-10000 credits
  #vacuum_cost_page_miss = 2              # 0-10000 credits
  #vacuum_cost_page_dirty = 20            # 0-10000 credits
  #vacuum_cost_limit = 200                # 1-10000 credits
  
  # - Background Writer -
  
  #bgwriter_delay = 200ms                 # 10-10000ms between rounds
  #bgwriter_lru_maxpages = 100            # max buffers written/round, 0 disables
  #bgwriter_lru_multiplier = 2.0          # 0-10.0 multiplier on buffers scanned/round
  #bgwriter_flush_after = 512kB           # measured in pages, 0 disables
  
  # - Asynchronous Behavior -
  
  #backend_flush_after = 0                # measured in pages, 0 disables
  #effective_io_concurrency = 1           # 1-1000; 0 disables prefetching
  #maintenance_io_concurrency = 10        # 1-1000; 0 disables prefetching
  #max_worker_processes = 8               # (change requires restart)
  #max_parallel_workers_per_gather = 2    # taken from max_parallel_workers
  #max_parallel_maintenance_workers = 2   # taken from max_parallel_workers
  #max_parallel_workers = 8               # maximum number of max_worker_processes that
                                          # can be used in parallel operations
  #parallel_leader_participation = on
  #old_snapshot_threshold = -1            # 1min-60d; -1 disables; 0 is immediate
                                          # (change requires restart)
  
  
  #------------------------------------------------------------------------------
  # WRITE-AHEAD LOG
  #------------------------------------------------------------------------------
  
  # - Settings -
  
  wal_level = logical                     # minimal, replica, or logical
                                          # (change requires restart)
  #fsync = on                             # flush data to disk for crash safety
                                          # (turning this off can cause
                                          # unrecoverable data corruption)
  #synchronous_commit = on                # synchronization level;
                                          # off, local, remote_write, remote_apply, or on
  #wal_sync_method = fsync                # the default is the first option
                                          # supported by the operating system:
                                          #   open_datasync
                                          #   fdatasync (default on Linux and FreeBSD)
                                          #   fsync
                                          #   fsync_writethrough
                                          #   open_sync
  #full_page_writes = on                  # recover from partial page writes
  #wal_log_hints = off                    # also do full page writes of non-critical updates
                                          # (change requires restart)
  #wal_compression = off                  # enable compression of full-page writes
  #wal_init_zero = on                     # zero-fill new WAL files
  #wal_recycle = on                       # recycle WAL files
  #wal_buffers = -1                       # min 32kB, -1 sets based on shared_buffers
                                          # (change requires restart)
  #wal_writer_delay = 200ms               # 1-10000 milliseconds
  #wal_writer_flush_after = 1MB           # measured in pages, 0 disables
  #wal_skip_threshold = 2MB
  
  #commit_delay = 0                       # range 0-100000, in microseconds
  #commit_siblings = 5                    # range 1-1000
  
  # - Checkpoints -
  
  #checkpoint_timeout = 5min              # range 30s-1d
  #checkpoint_completion_target = 0.9     # checkpoint target duration, 0.0 - 1.0
  #checkpoint_flush_after = 256kB         # measured in pages, 0 disables
  #checkpoint_warning = 30s               # 0 disables
  max_wal_size = 1GB
  min_wal_size = 80MB
  
  # - Archiving -
  
  #archive_mode = off             # enables archiving; off, on, or always
                                  # (change requires restart)
  #archive_command = ''           # command to use to archive a logfile segment
                                  # placeholders: %p = path of file to archive
                                  #               %f = file name only
                                  # e.g. 'test ! -f /mnt/server/archivedir/%f &amp;&amp; cp %p /mnt/server/archivedir/%f'
  #archive_timeout = 0            # force a logfile segment switch after this
                                  # number of seconds; 0 disables
  
  # - Archive Recovery -
  
  # These are only used in recovery mode.
  
  #restore_command = ''           # command to use to restore an archived logfile segment
                                  # placeholders: %p = path of file to restore
                                  #               %f = file name only
                                  # e.g. 'cp /mnt/server/archivedir/%f %p'
  #archive_cleanup_command = ''   # command to execute at every restartpoint
  #recovery_end_command = ''      # command to execute at completion of recovery
  
  # - Recovery Target -
  
  # Set these only when performing a targeted recovery.
  
  #recovery_target = ''           # 'immediate' to end recovery as soon as a
                                  # consistent state is reached
                                  # (change requires restart)
  #recovery_target_name = ''      # the named restore point to which recovery will proceed
                                  # (change requires restart)
  #recovery_target_time = ''      # the time stamp up to which recovery will proceed
                                  # (change requires restart)
  #recovery_target_xid = ''       # the transaction ID up to which recovery will proceed
                                  # (change requires restart)
  #recovery_target_lsn = ''       # the WAL LSN up to which recovery will proceed
                                  # (change requires restart)
  #recovery_target_inclusive = on # Specifies whether to stop:
                                  # just after the specified recovery target (on)
                                  # just before the recovery target (off)
                                  # (change requires restart)
  #recovery_target_timeline = 'latest'    # 'current', 'latest', or timeline ID
                                  # (change requires restart)
  #recovery_target_action = 'pause'       # 'pause', 'promote', 'shutdown'
                                  # (change requires restart)
  
  
  #------------------------------------------------------------------------------
  # REPLICATION
  #------------------------------------------------------------------------------
  
  # - Sending Servers -
  
  # Set these on the primary and on any standby that will send replication data.
  
  max_wal_senders = 1             # max number of walsender processes
                                  # (change requires restart)
  max_replication_slots = 1       # max number of replication slots
                                  # (change requires restart)
  #wal_keep_size = 0              # in megabytes; 0 disables
  #max_slot_wal_keep_size = -1    # in megabytes; -1 disables
  #wal_sender_timeout = 60s       # in milliseconds; 0 disables
  #track_commit_timestamp = off   # collect timestamp of transaction commit
                                  # (change requires restart)
  
  # - Primary Server -
  
  # These settings are ignored on a standby server.
  
  #synchronous_standby_names = '' # standby servers that provide sync rep
                                  # method to choose sync standbys, number of sync standbys,
                                  # and comma-separated list of application_name
                                  # from standby(s); '*' = all
  #vacuum_defer_cleanup_age = 0   # number of xacts by which cleanup is delayed
  
  # - Standby Servers -
  
  # These settings are ignored on a primary server.
  
  #primary_conninfo = ''                  # connection string to sending server
  #primary_slot_name = ''                 # replication slot on sending server
  #promote_trigger_file = ''              # file name whose presence ends recovery
  #hot_standby = on                       # &quot;off&quot; disallows queries during recovery
                                          # (change requires restart)
  #max_standby_archive_delay = 30s        # max delay before canceling queries
                                          # when reading WAL from archive;
                                          # -1 allows indefinite delay
  #max_standby_streaming_delay = 30s      # max delay before canceling queries
                                          # when reading streaming WAL;
                                          # -1 allows indefinite delay
  #wal_receiver_create_temp_slot = off    # create temp slot if primary_slot_name
                                          # is not set
  #wal_receiver_status_interval = 10s     # send replies at least this often
                                          # 0 disables
  #hot_standby_feedback = off             # send info from standby to prevent
                                          # query conflicts
  #wal_receiver_timeout = 60s             # time that receiver waits for
                                          # communication from primary
                                          # in milliseconds; 0 disables
  #wal_retrieve_retry_interval = 5s       # time to wait before retrying to
                                          # retrieve WAL after a failed attempt
  #recovery_min_apply_delay = 0           # minimum delay for applying changes during recovery
  
  # - Subscribers -
  
  # These settings are ignored on a publisher.
  
  #max_logical_replication_workers = 4    # taken from max_worker_processes
                                          # (change requires restart)
  #max_sync_workers_per_subscription = 2  # taken from max_logical_replication_workers
  
  
  
  
  #------------------------------------------------------------------------------
  # CLIENT CONNECTION DEFAULTS
  #------------------------------------------------------------------------------
  
  # - Statement Behavior -
  
  #client_min_messages = notice           # values in order of decreasing detail:
                                          #   debug5
                                          #   debug4
                                          #   debug3
                                          #   debug2
                                          #   debug1
                                          #   log
                                          #   notice
                                          #   warning
                                          #   error
  #search_path = '&quot;$user&quot;, public'        # schema names
  #row_security = on
  #default_table_access_method = 'heap'
  #default_tablespace = ''                # a tablespace name, '' uses the default
  #default_toast_compression = 'pglz'     # 'pglz' or 'lz4'
  #temp_tablespaces = ''                  # a list of tablespace names, '' uses
                                          # only default tablespace
  #check_function_bodies = on
  #default_transaction_isolation = 'read committed'
  #default_transaction_read_only = off
  #default_transaction_deferrable = off
  #session_replication_role = 'origin'
  #statement_timeout = 0                  # in milliseconds, 0 is disabled
  #lock_timeout = 0                       # in milliseconds, 0 is disabled
  #idle_in_transaction_session_timeout = 0        # in milliseconds, 0 is disabled
  #idle_session_timeout = 0               # in milliseconds, 0 is disabled
  #vacuum_freeze_table_age = 150000000
  #vacuum_freeze_min_age = 50000000
  #vacuum_failsafe_age = 1600000000
  #vacuum_multixact_freeze_table_age = 150000000
  #vacuum_multixact_freeze_min_age = 5000000
  #vacuum_multixact_failsafe_age = 1600000000
  #bytea_output = 'hex'                   # hex, escape
  #xmlbinary = 'base64'
  #xmloption = 'content'
  #gin_pending_list_limit = 4MB
  
  # - Locale and Formatting -
  
  datestyle = 'iso, mdy'
  #intervalstyle = 'postgres'
  timezone = 'Asia/Kuala_Lumpur'
  #timezone_abbreviations = 'Default'     # Select the set of available time zone
                                          # abbreviations.  Currently, there are
                                          #   Default
                                          #   Australia (historical usage)
                                          #   India
                                          # You can create your own file in
                                          # share/timezonesets/.
  #extra_float_digits = 1                 # min -15, max 3; any value &gt;0 actually
                                          # selects precise output mode
  #client_encoding = sql_ascii            # actually, defaults to database
                                          # encoding
  
  # These settings are initialized by initdb, but they can be changed.
  lc_messages = 'en_US.UTF-8'                     # locale for system error message
                                          # strings
  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'
  
  # - Shared Library Preloading -
  
  #local_preload_libraries = ''
  #session_preload_libraries = ''
  shared_preload_libraries = 'decoderbufs,wal2json'       # (change requires restart)
  #jit_provider = 'llvmjit'               # JIT library to use
  
  # - Other Defaults -
  
  #dynamic_library_path = '$libdir'
  #gin_fuzzy_search_limit = 0
  </code></pre>