我在 CentOS 8 机器上设置了一个 postgresql 服务器,并在同一台机器上运行了一个 js 程序,使用 pg
库。
const { Pool } = require('pg')
const pool = new Pool({
user: process.env.PG_USER, //postgres user
host: process.env.PG_ENDPOINT, //localhost (I also tried 127.0.0.1)
database: process.env.PG_DB, //database name to connect to
password: process.env.PG_PASS, //postgres user password
port: process.env.PG_PORT //5432
});
我正确设置了 pg 池,如果我想将它连接到我的 AWS postgres 服务器(当然使用正确的端点等),它就可以正常工作,但是当我尝试让它连接到我在同一台机器上设置的 postgres 服务器,出现以下错误:
Error: connect ECONNREFUSED 127.0.0.1:5432
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1146:16) {
errno: -111,
code: 'ECONNREFUSED',
syscall: 'connect',
address: '127.0.0.1',
port: 5432
}
我按照说明设置 pg_hba.conf 文件以允许密码登录而不是 ident:
# "local" is for Unix domain socket connections only
local all all peer
# IPv4 local connections:
host all all 127.0.0.1/32 ident
host all all 127.0.0.1/32 md5
# IPv6 local connections:
host all all ::1/128 ident
host all all ::1/128 md5
# Allow replication connections from localhost, by a user with the
# replication privilege.
local replication all peer
host replication all 127.0.0.1/32 ident
host replication all 127.0.0.1/32 md5
host replication all ::1/128 ident
host replication all ::1/128 md5
在 postgresql.conf 中,我取消了 listen_addresses
和 port
行的注释:
# - 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
感谢任何帮助。
netstat -na 的结果:
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 0 ###.##.43.124:22 ###.##.122.136:59611 ESTABLISHED
tcp 0 64 ###.##.43.124:22 ###.##.122.136:59445 ESTABLISHED
tcp6 0 0 :::22 :::* LISTEN
udp 0 0 127.0.0.1:323 0.0.0.0:*
udp 0 0 0.0.0.0:68 0.0.0.0:*
udp6 0 0 ::1:323 :::*
raw6 0 0 :::58 :::* 7
(#用来隐藏IP)
答案 0 :(得分:0)
netstat
没有显示任何在 5432 侦听的内容,这是您告诉 PostgreSQL 侦听的位置。如果它不收听,则您无法连接到它。为什么不听?也许它没有运行——你应该检查它的日志文件,看看发生了什么。