Question

尝试通过端口转发连接到远程虚拟机数据库。 VM主机是远程服务器（Ubuntu x64），来宾VM是Ubuntu x64，并且为15432 =＆gt;设置端口转发。 5432（host =＆gt; guest）。

当我尝试通过psql或pgAdmin3连接时，我收到连接拒绝错误。

来自本地机器的psql命令：

psql -h remote.server.address -p 15432 -U postgres database_name

响应：

psql: server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.

postgresql.conf listen_addresses设置为all：

$ cat /etc/postgresql/9.4/main/postgresql.conf | grep listen
listen_addresses = '*'      # what IP address(es) to listen on;

我的pg_hba.conf：

# Database administrative login by Unix domain socket
local   all             postgres                                peer

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     peer
# IPv4 local connections:
host    all             all             127.0.0.1/32            md5
host    all             all             10.0.0.0/16            md5
host    all             all             0.0.0.0/0            md5
# IPv6 local connections:
host    all             all             ::1/128                 md5
# Allow replication connections from localhost, by a user with the
# replication privilege.
#local   replication     postgres                                peer
#host    replication     postgres        127.0.0.1/32            md5
#host    replication     postgres        ::1/128                 md5

host    informatics     nmr_user         192.168.20.223/32          md5
host    all         all         192.168.8.0/22          md5
host    all         all         192.168.50.0/24         md5
host    all         all         192.168.7.0/24          md5
host    all         all         192.168.4.0/24          md5
host    all         all         192.168.6.0/24          md5

SSL证书存在于pg_hba.conf中指定的路径中重新启动postgres服务也无法解决问题

非常确定我的问题出在pg_hba中。我是网络业余爱好者。在vm：

$ ip addr show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
   valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state      UP qlen 1000
link/ether 08:00:27:9a:8e:c6 brd ff:ff:ff:ff:ff:ff
inet 10.0.2.15/24 brd 10.0.2.255 scope global eth0
inet6 fe80::a00:27ff:fe9a:8ec6/64 scope link
   valid_lft forever preferred_lft forever

任何帮助都将不胜感激!!

修改：已解决

问题不在于postgres配置，而是远程主机上的Virtualbox VM配置。使用NAT设置端口转发，主机侦听127.0.0.1:15432。因为它只是监听环回接口，所以外部世界将端口15432视为关闭。在主机上将NAT更改为0.0.0.0:15432后，端口已打开并且连接已完成。

感谢您的建议

Postgres连接失败

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