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Postgres seems to be listening on the expected port, but serverspec
cannot connect to it?

Attempt to do some connections to see if it is a serverspec bug or
an issue with the module.

Author: smortex

spec/acceptance/utf8_encoding_spec.rb

@@ -18,14 +18,16 @@ class { 'postgresql::server': }
     export_locales('en_NG.UTF8')
     idempotent_apply(pp, debug: true)
     puts '-------------------------------'
-    pp os
-    puts '-------------------------------'
     puts LitmusHelper.instance.run_shell('ss -lntp').stdout
     puts '-------------------------------'
     puts LitmusHelper.instance.run_shell('journalctl -u postgresql').stdout
     puts '-------------------------------'
     puts LitmusHelper.instance.run_shell('systemctl status postgresql*').stdout
     puts '-------------------------------'
+    puts LitmusHelper.instance.run_shell("su postgres -c 'psql -c \\\\l'").stdout
+    puts '-------------------------------'
+    puts LitmusHelper.instance.run_shell('true &>/dev/null </dev/tcp/127.0.0.1/5432 && echo open || echo closed').stdout
+    puts '-------------------------------'
     expect(port(5432)).to be_listening.on('127.0.0.1').with('tcp')
     expect(psql('--command="\l" postgres', 'postgres').stdout).to match(%r{List of databases})
     expect(psql('--command="SELECT pg_encoding_to_char(encoding) FROM pg_database WHERE datname=\'template1\'"').stdout).to match(%r{UTF8})