如何将契约代理连接到PostgreSQL的本地或云实例？

Question

我很难让container在码头容器中运行，以连接到我在Windows上的本地PostgreSQL安装。

这就是我的码头运行命令.

docker run pactfoundation/pact-broker 
-e PACT_BROKER_DATABASE_USERNAME=pact_broker 
-e PACT_BROKER_DATABASE_PASSWORD={Password} 
-e PACT_BROKER_DATABASE_HOST=host.docker.internal 
-e PACT_BROKER_DATABASE_NAME=pact_broker 
-e PACT_BROKER_DATABASE_PORT=5432 
-p 9292:9292

返回以下错误..。

Unable to load application: Sequel::DatabaseConnectionError: PG::ConnectionBad: could not connect to server: No such file or directory
        Is the server running locally and accepting
        connections on Unix domain socket "/tmp/.s.PGSQL.5432"?
bundler: failed to load command: puma (/pact_broker/vendor/bundle/ruby/2.6.0/bin/puma)
Sequel::DatabaseConnectionError: PG::ConnectionBad: could not connect to server: No such file or directory
        Is the server running locally and accepting
        connections on Unix domain socket "/tmp/.s.PGSQL.5432"?

这是pgAdmin 4中的数据库和用户

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下面是我用来测试连接的命令

psql postgresql://pact_broker:{Password}@localhost/pact_broker

返回以下内容..。

psql (13.3)
WARNING: Console code page (65001) differs from Windows code page (1252)
         8-bit characters might not work correctly. See psql reference
         page "Notes for Windows users" for details.
Type "help" for help.

pact_broker=>

我还尝试运行以下命令，该命令返回相同的错误

docker run pactfoundation/pact-broker -e PACT_BROKER_DATABASE_URL=postgresql://pact_broker:{Password}@host.docker.internal/pact_broker -p 9292:9292

我的postgres.conf文件包含listen_addresses = '*'，我的pg_hba.conf包含以下内容

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     scram-sha-256
# IPv4 local connections:
host    all             all             127.0.0.1/32            scram-sha-256
# IPv6 local connections:
host    all             all             ::1/128                 scram-sha-256
# Allow replication connections from localhost, by a user with the
# replication privilege.
local   replication     all                                     scram-sha-256
host    all             all             0.0.0.0/0               trust
host    replication     all             ::1/128                 scram-sha-256
host    all             all             ::/0                    md5

使用托管的实例也有类似的问题

我的连接字符串看起来如下..。

psql "host=pactbrokerserver.postgres.database.azure.com port=5432 dbname={your_database} user=postgres@pactbrokerserver password={your_password} sslmode=require"

我试图通过当地的契约经纪人连接到.

docker run pactfoundation/pact-broker 
-e PACT_BROKER_DATABASE_USERNAME=postgres@pactbrokerserver 
-e PACT_BROKER_DATABASE_PASSWORD={Password} 
-e PACT_BROKER_DATABASE_HOST=pactbrokerserver.postgres.database.azure.com 
-e PACT_BROKER_DATABASE_NAME=pactbroker 
-e PACT_BROKER_DATABASE_PORT=5432 
-e PACT_BROKER_DATABASE_CONNECT_MAX_RETRIES=5 
-p 9292:9292

它会返回完全相同的错误。

这里有什么问题？

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Answer 1

我认为这里发生的事情是，您已经将容器名称放在了环境参数列表之前，放到了docker run命令中。

因此，不使用自定义值为正在运行的容器设置PACT_BROKER_DATABASE_NAME和其他环境变量，它们只是被运行时丢弃。

试一试：

docker run -e PACT_BROKER_DATABASE_USERNAME=pact_broker \
-e PACT_BROKER_DATABASE_PASSWORD={Password} \
-e PACT_BROKER_DATABASE_HOST=host.docker.internal \
-e PACT_BROKER_DATABASE_NAME=pact_broker \
-e PACT_BROKER_DATABASE_PORT=5432 \
-p 9292:9292 \
pactfoundation/pact-broker 

调试选项

如果我错了，这个问题很可能与网络路径有关。为了排除这种情况，我们可以通过用/bin/sh替换入口点(通常是启动和运行web服务器的脚本)，将一个shell放到码头容器中。

docker run -it --entrypoint /bin/sh --user root -e PACT_BROKER_DATABASE_USERNAME=pact_broker -e PACT_BROKER_DATABASE_PASSWORD=Penwater858 -e PACT_BROKER_DATABASE_HOST=host.docker.internal -e PACT_BROKER_DATABASE_NAME=pact_broker -e PACT_BROKER_DATABASE_PORT=5432 -p 9292:9292 pactfoundation/pact-broker
# once in the container...
apk update
apk add busybox-extras
# see if there is a network path
telnet $PACT_BROKER_DATABASE_HOST $PACT_BROKER_DATABASE_PORT