Heroku、Node.js、PostgreSQL 错误：主机没有 pg_hba.conf 条目答案

【问题标题】：Heroku, Node.js, PostgreSQL error: no pg_hba.conf entry for hostHeroku、Node.js、PostgreSQL 错误：主机没有 pg_hba.conf 条目
【发布时间】：2021-12-17 09:05:54
【问题描述】：

我需要认真的帮助。一周前我的 Heroku 应用程序崩溃了，我已经排除故障 3 天没有成功。尝试将连接代码更改为 ssl，并对 pg_hba.conf 和 postgresql.conf 文件进行了一些更改，但没有成功。
这是不断出现的错误：

嗨！我需要认真的帮助。一周前我的 Heroku 应用程序崩溃了，我已经排除故障 3 天没有成功。尝试将连接代码更改为 ssl，并对 pg_hba.conf 和 postgresql.conf 文件进行了一些更改，但没有成功。
这是不断出现的错误：

ConnectionError [SequelizeConnectionError]: no pg_hba.conf entry for host "", user "", database "", SSL off
    at /app/node_modules/sequelize/lib/dialects/postgres/connection-manager.js:182:24
    at Connection.connectingErrorHandler (/app/node_modules/pg/lib/client.js:194:14)
    at Connection.emit (events.js:210:5)
    at Socket.<anonymous> (/app/node_modules/pg/lib/connection.js:134:12)
    at Socket.emit (events.js:210:5)
    at addChunk (_stream_readable.js:308:12)
    at readableAddChunk (_stream_readable.js:289:11)
    at Socket.Readable.push (_stream_readable.js:223:10)
    at TCP.onStreamRead (internal/stream_base_commons.js:182:23) {
  name: 'SequelizeConnectionError',
  parent: error: no pg_hba.conf entry for host "52.206.229.39", user "pirotuslftnuae", database "d7q6mo0trncmiq", SSL off
      at Connection.parseE (/app/node_modules/pg/lib/connection.js:614:13)
      at Connection.parseMessage (/app/node_modules/pg/lib/connection.js:413:19)
      at Socket.<anonymous> (/app/node_modules/pg/lib/connection.js:129:22)
      at Socket.emit (events.js:210:5)
      at addChunk (_stream_readable.js:308:12)
      at readableAddChunk (_stream_readable.js:289:11)
      at Socket.Readable.push (_stream_readable.js:223:10)
      at TCP.onStreamRead (internal/stream_base_commons.js:182:23) {
    name: 'error',
    length: 167,
    severity: 'FATAL',
    code: '28000',
    detail: undefined,
    hint: undefined,
    position: undefined,
    internalPosition: undefined,
    internalQuery: undefined,
    where: undefined,
    schema: undefined,
    table: undefined,
    column: undefined,
    dataType: undefined,
    constraint: undefined,
    file: 'auth.c',
    line: '496',
    routine: 'ClientAuthentication'
  },

 const db = new Sequelize({
      user: "name",
      password: "****",
      database: "databaseName",
      port: 5432,
      host: "localhost",
      ssl: true,
      dialect: 'postgres',
      dialectOptions: {
        "ssl": {"rejectUnauthorized": false}
      }
    });

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

# TYPE  DATABASE        USER            ADDRESS                 METHOD
  host  all             all             0.0.0.0/0                md5
# "local" is for Unix domain socket connections only
local   all             all                                     peer
# IPv4 local connections:
host    all             all             127.0.0.1/32            trust
# IPv6 local connections:
host    all             all             ::1/128                 trust
# Allow rep

# - Connection Settings -

#listen_addresses = '*'         # 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_director`enter code here`ie

【问题讨论】：

您显示的 pg_hba 似乎不是您尝试连接的服务器上有效的那个。您可能正在编辑错误的文件，或者在编辑后没有重新加载/重新启动。
我使用以下命令访问 pg => sudo nano /etc/postgresql/10/main/pg_hba.conf 和 sudo nano /etc/postgresql/10/main/postgresql.conf 。还有其他方法可以访问吗？？？我也多次重启了应用程序。
需要重启的是数据库，而不是应用服务器。
是的，我在 pg 文件中进行更改后重新启动了数据库（postgresql）。
sudo service postgresql restart

标签： node.js postgresql heroku

【解决方案1】：

我终于用我的数据库文件中的这个 ssl 代码解决了我的问题

let config

if (process.env.DATABASE_URL) {
  config = {
    logging: false,
    ssl: true,
    dialectOptions: {
      ssl: {
        require: true,
        rejectUnauthorized: false
      }
    }
  }
} else {
  config = {
    logging: false
  }
}

const db = new Sequelize(
  process.env.DATABASE_URL ||
    `postgres://localhost:5432/${databaseName}`,
  config
)

【讨论】：