重新启动pgSQL时，我得到以下日志条目：
2010-02-10 16:08:05 EST LOG: received smart shutdown request 2010-02-10 16:08:05 EST LOG: autovacuum launcher shutting down 2010-02-10 16:08:05 EST LOG: shutting down 2010-02-10 16:08:05 EST LOG: database system is shut down 2010-02-10 16:08:07 EST LOG: database system was shut down at 2010-02-10 16:08:05 EST 2010-02-10 16:08:07 EST LOG: autovacuum launcher started 2010-02-10 16:08:07 EST LOG: database system is ready to accept connections 2010-02-10 16:08:07 EST LOG: connection received: host=[local] 2010-02-10 16:08:07 EST LOG: incomplete startup packet 2010-02-10 16:08:07 EST LOG: connection received: host=[local] 2010-02-10 16:08:07 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:08 EST LOG: connection received: host=[local] 2010-02-10 16:08:08 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:08 EST LOG: connection received: host=[local] 2010-02-10 16:08:08 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:09 EST LOG: connection received: host=[local] 2010-02-10 16:08:09 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:09 EST LOG: connection received: host=[local] 2010-02-10 16:08:09 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:10 EST LOG: connection received: host=[local] 2010-02-10 16:08:10 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:10 EST LOG: connection received: host=[local] 2010-02-10 16:08:10 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:11 EST LOG: connection received: host=[local] 2010-02-10 16:08:11 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:11 EST LOG: connection received: host=[local] 2010-02-10 16:08:11 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:12 EST LOG: connection received: host=[local] 2010-02-10 16:08:12 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:12 EST LOG: connection received: host=[local] 2010-02-10 16:08:12 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:12 EST LOG: connection received: host=[local] 2010-02-10 16:08:12 EST LOG: incomplete startup packet 我关于这个潜在的后果的问题是张贴在这里： https : //stackoverflow.com/questions/2238954/mdb2-says-connection-failed-db-logs-say-otherwise ，但我没有意识到这是发生在我问了这个问题，我认为这个问题的一部分是针对SF的。
编辑：我可以连接到数据库，并通常使用psql CLI和postgres用户操作东西。
你有什么问题？
你的服务器启动完全正常 – “数据库系统准备好接受连接”
只要准备就绪，就会尝试使用“postgres”帐户连接无效的密码，这似乎是来自本地服务器。
如果你问这些条目，而不是你，看起来有人正在对PostgreSQL进行字典攻击。 奇怪的是，看起来连接来自本地主机，所以他们可能会欺骗他们的源地址。
我build议放置一个防火墙，以限制只有需要它的IP访问。
如果你正在寻找任何其他的答案，你需要更具体一些。
这看起来非常像两件事情的组合：
– 您的pg_hba.conf不允许本地用户“postgres” – 您的rc.d脚本尝试通过以用户“postgres”连接本地数据库来获取数据库状态以确认启动
我build议检查rc脚本。 如果您看到实际情况如此，请修改脚本以提供密码或修改pg_hba.conf以信任该用户。 重新启动，看看错误消失了
有人也回答了这个在stackoverflow： https ： //stackoverflow.com/questions/7038342/password-authentication-failed-for-user-postgres
Berry Langerak的第一个答案为我解决了这个问题。