Replace deprecated log_connections values in docs and tests

9219093cab modularized log_connections output to allow more
granular control over which aspects of connection establishment are
logged. It converted the boolean log_connections GUC into a list of strings
and deprecated previously supported boolean-like values on, off, true,
false, 1, 0, yes, and no. Those values still work, but they are
supported mainly for backwards compatability. As such, documented
examples of log_connections should not use these deprecated values.

Update references in the docs to deprecated log_connections values. Many
of the tests use log_connections. This commit also updates the tests to
use the new values of log_connections. In some of the tests, the updated
log_connections value covers a narrower set of aspects (e.g. the
'authentication' aspect in the tests in src/test/authentication and the
'receipt' aspect in src/test/postmaster). In other cases, the new value
for log_connections is a superset of the previous included aspects (e.g.
'all' in src/test/kerberos/t/001_auth.pl).

Reported-by: Peter Eisentraut <peter@eisentraut.org>
Author: Melanie Plageman <melanieplageman@gmail.com>
Reviewed-by: Peter Eisentraut <peter@eisentraut.org>
Reviewed-by: Jacob Champion <jacob.champion@enterprisedb.com>
Discussion: https://postgr.es/m/e1586594-3b69-4aea-87ce-73a7488cdc97%40eisentraut.org

doc/src/sgml/config.sgml

@@ -140,7 +140,7 @@
      An example of what this file might look like is:
 <programlisting>
 # This is a comment
-log_connections = yes
+log_connections = all
 log_destination = 'syslog'
 search_path = '"$user", public'
 shared_buffers = 128MB
@@ -337,7 +337,7 @@ UPDATE pg_settings SET setting = reset_val WHERE name = 'configuration_parameter
        <option>-c name=value</option> command-line parameter, or its equivalent
        <option>--name=value</option> variation.  For example,
 <programlisting>
-postgres -c log_connections=yes --log-destination='syslog'
+postgres -c log_connections=all --log-destination='syslog'
 </programlisting>
        Settings provided in this way override those set via
        <filename>postgresql.conf</filename> or <command>ALTER SYSTEM</command>,

src/backend/tcop/postgres.c

@@ -3693,7 +3693,7 @@ set_debug_options(int debug_flag, GucContext context, GucSource source)
 
 	if (debug_flag >= 1 && context == PGC_POSTMASTER)
 	{
-		SetConfigOption("log_connections", "true", context, source);
+		SetConfigOption("log_connections", "all", context, source);
 		SetConfigOption("log_disconnections", "true", context, source);
 	}
 	if (debug_flag >= 2)

src/interfaces/libpq/t/005_negotiate_encryption.pl

@@ -107,7 +107,7 @@ $node->append_conf(
 listen_addresses = '$hostaddr'
 
 # Capturing the EVENTS that occur during tests requires these settings
-log_connections = on
+log_connections = 'receipt,authentication,authorization'
 log_disconnections = on
 trace_connection_negotiation = on
 lc_messages = 'C'

src/test/authentication/t/003_peer.pl

@@ -71,7 +71,7 @@ sub test_role
 
 my $node = PostgreSQL::Test::Cluster->new('node');
 $node->init;
-$node->append_conf('postgresql.conf', "log_connections = on\n");
+$node->append_conf('postgresql.conf', "log_connections = authentication\n");
 # Needed to allow connect_fails to inspect postmaster log:
 $node->append_conf('postgresql.conf', "log_min_messages = debug2");
 $node->start;

src/test/authentication/t/005_sspi.pl

@@ -18,7 +18,7 @@ if (!$windows_os || $use_unix_sockets)
 # Initialize primary node
 my $node = PostgreSQL::Test::Cluster->new('primary');
 $node->init;
-$node->append_conf('postgresql.conf', "log_connections = on\n");
+$node->append_conf('postgresql.conf', "log_connections = authentication\n");
 $node->start;
 
 my $huge_pages_status =

src/test/authentication/t/007_pre_auth.pl

@@ -20,7 +20,7 @@ my $node = PostgreSQL::Test::Cluster->new('primary');
 $node->init;
 $node->append_conf(
 	'postgresql.conf', q[
-log_connections = on
+log_connections = 'receipt,authentication'
 ]);
 
 $node->start;

src/test/kerberos/t/001_auth.pl

@@ -65,7 +65,7 @@ $node->append_conf(
 	'postgresql.conf', qq{
 listen_addresses = '$hostaddr'
 krb_server_keyfile = '$krb->{keytab}'
-log_connections = on
+log_connections = all
 log_min_messages = debug2
 lc_messages = 'C'
 });

src/test/ldap/t/001_auth.pl

@@ -47,7 +47,7 @@ note "setting up PostgreSQL instance";
 
 my $node = PostgreSQL::Test::Cluster->new('node');
 $node->init;
-$node->append_conf('postgresql.conf', "log_connections = on\n");
+$node->append_conf('postgresql.conf', "log_connections = all\n");
 # Needed to allow connect_fails to inspect postmaster log:
 $node->append_conf('postgresql.conf', "log_min_messages = debug2");
 $node->start;

src/test/ldap/t/002_bindpasswd.pl

@@ -43,7 +43,7 @@ note "setting up PostgreSQL instance";
 
 my $node = PostgreSQL::Test::Cluster->new('node');
 $node->init;
-$node->append_conf('postgresql.conf', "log_connections = on\n");
+$node->append_conf('postgresql.conf', "log_connections = all\n");
 $node->start;
 
 $node->safe_psql('postgres', 'CREATE USER test0;');

src/test/modules/ldap_password_func/t/001_mutated_bindpasswd.pl

@@ -42,7 +42,8 @@ note "setting up PostgreSQL instance";
 
 my $node = PostgreSQL::Test::Cluster->new('node');
 $node->init;
-$node->append_conf('postgresql.conf', "log_connections = on\n");
+$node->append_conf('postgresql.conf',
+	"log_connections = 'receipt,authentication,authorization'\n");
 $node->append_conf('postgresql.conf',
 	"shared_preload_libraries = 'ldap_password_func'");
 $node->start;

src/test/modules/oauth_validator/t/001_server.pl

@@ -45,7 +45,7 @@ if ($ENV{with_python} ne 'yes')
 
 my $node = PostgreSQL::Test::Cluster->new('primary');
 $node->init;
-$node->append_conf('postgresql.conf', "log_connections = on\n");
+$node->append_conf('postgresql.conf', "log_connections = all\n");
 $node->append_conf('postgresql.conf',
 	"oauth_validator_libraries = 'validator'\n");
 # Needed to allow connect_fails to inspect postmaster log:

src/test/modules/oauth_validator/t/002_client.pl

@@ -26,7 +26,7 @@ if (!$ENV{PG_TEST_EXTRA} || $ENV{PG_TEST_EXTRA} !~ /\boauth\b/)
 
 my $node = PostgreSQL::Test::Cluster->new('primary');
 $node->init;
-$node->append_conf('postgresql.conf', "log_connections = on\n");
+$node->append_conf('postgresql.conf', "log_connections = all\n");
 $node->append_conf('postgresql.conf',
 	"oauth_validator_libraries = 'validator'\n");
 $node->start;

src/test/postmaster/t/002_connection_limits.pl

@@ -20,7 +20,8 @@ $node->init(
 $node->append_conf('postgresql.conf', "max_connections = 6");
 $node->append_conf('postgresql.conf', "reserved_connections = 2");
 $node->append_conf('postgresql.conf', "superuser_reserved_connections = 1");
-$node->append_conf('postgresql.conf', "log_connections = on");
+$node->append_conf('postgresql.conf',
+	"log_connections = 'receipt,authentication,authorization'");
 $node->append_conf('postgresql.conf', "log_min_messages=debug2");
 $node->start;
 

src/test/postmaster/t/003_start_stop.pl

@@ -33,7 +33,8 @@ $node->append_conf('postgresql.conf', "max_connections = 5");
 $node->append_conf('postgresql.conf', "max_wal_senders = 0");
 $node->append_conf('postgresql.conf', "autovacuum_max_workers = 1");
 $node->append_conf('postgresql.conf', "max_worker_processes = 1");
-$node->append_conf('postgresql.conf', "log_connections = on");
+$node->append_conf('postgresql.conf',
+	"log_connections = 'receipt,authentication,authorization'");
 $node->append_conf('postgresql.conf', "log_min_messages = debug2");
 $node->append_conf('postgresql.conf',
 	"authentication_timeout = '$authentication_timeout s'");

src/test/recovery/t/013_crash_restart.pl

@@ -27,7 +27,7 @@ $node->start();
 $node->safe_psql(
 	'postgres',
 	q[ALTER SYSTEM SET restart_after_crash = 1;
-				   ALTER SYSTEM SET log_connections = 1;
+				   ALTER SYSTEM SET log_connections = receipt;
 				   SELECT pg_reload_conf();]);
 
 # Run psql, keeping session alive, so we have an alive backend to kill.

src/test/recovery/t/022_crash_temp_files.pl

@@ -26,7 +26,7 @@ $node->start();
 $node->safe_psql(
 	'postgres',
 	q[ALTER SYSTEM SET remove_temp_files_after_crash = on;
-				   ALTER SYSTEM SET log_connections = 1;
+				   ALTER SYSTEM SET log_connections = receipt;
 				   ALTER SYSTEM SET work_mem = '64kB';
 				   ALTER SYSTEM SET restart_after_crash = on;
 				   SELECT pg_reload_conf();]);

src/test/recovery/t/032_relfilenode_reuse.pl

@@ -14,7 +14,7 @@ $node_primary->init(allows_streaming => 1);
 $node_primary->append_conf(
 	'postgresql.conf', q[
 allow_in_place_tablespaces = true
-log_connections=on
+log_connections=receipt
 # to avoid "repairing" corruption
 full_page_writes=off
 log_min_messages=debug2

src/test/recovery/t/037_invalid_database.pl

@@ -15,7 +15,7 @@ $node->append_conf(
 autovacuum = off
 max_prepared_transactions=5
 log_min_duration_statement=0
-log_connections=on
+log_connections=receipt
 log_disconnections=on
 ));
 

src/test/ssl/t/SSL/Server.pm

@@ -200,7 +200,7 @@ sub configure_test_server_for_ssl
 	$node->append_conf(
 		'postgresql.conf', <<EOF
 fsync=off
-log_connections=on
+log_connections=all
 log_hostname=on
 listen_addresses='$serverhost'
 log_statement=all

src/tools/ci/pg_ci_base.conf

@@ -8,7 +8,7 @@ max_prepared_transactions = 10
 # Settings that make logs more useful
 log_autovacuum_min_duration = 0
 log_checkpoints = true
-log_connections = true
+log_connections = all
 log_disconnections = true
 log_line_prefix = '%m [%p][%b] %q[%a][%v:%x] '
 log_lock_waits = true