DBConnection.ConnectionError）tcp connect（localhost：5432）：連接被拒絕 - ：econnrefused

我在Buddy持續集成服務器上運行內部版本，執行mix test時遇到postgrex/ecto部分：DBConnection.ConnectionError）tcp connect（localhost：5432）：連接被拒絕 - ：econnrefused

==> postgrex 
Compiling 61 files (.ex) 
Compiling lib/postgrex/protocol.ex (it's taking more than 10s) 
Compiling lib/postgrex/default_types.ex (it's taking more than 10s) 
Generated postgrex app 
==> ecto 
Compiling 69 files (.ex) 
Compiling lib/ecto/query/builder/lock.ex (it's taking more than 10s) 
Compiling lib/ecto/repo/queryable.ex (it's taking more than 10s) 
Compiling lib/ecto/query/inspect.ex (it's taking more than 10s) 
Compiling lib/mix/tasks/ecto.drop.ex (it's taking more than 10s) 
Compiling lib/ecto/query/builder/filter.ex (it's taking more than 10s) 
Compiling lib/ecto/repo/preloader.ex (it's taking more than 10s) 
Compiling lib/mix/tasks/ecto.gen.repo.ex (it's taking more than 10s) 
Compiling lib/ecto/adapters/mysql.ex (it's taking more than 10s) 
Compiling lib/ecto/schema.ex (it's taking more than 10s) 
Compiling lib/ecto/migration/runner.ex (it's taking more than 10s) 
Compiling lib/ecto/repo/schema.ex (it's taking more than 10s) 
Compiling lib/ecto/embedded.ex (it's taking more than 10s) 
Compiling lib/ecto/migration/schema_migration.ex (it's taking more than 10s) 
Compiling lib/ecto/query/builder/preload.ex (it's taking more than 10s) 
Compiling lib/ecto/query/builder/order_by.ex (it's taking more than 10s) 
Compiling lib/ecto/uuid.ex (it's taking more than 10s) 
Compiling lib/ecto/type.ex (it's taking more than 10s) 
Compiling lib/ecto/association.ex (it's taking more than 10s) 
Compiling lib/ecto/adapters/postgres/connection.ex (it's taking more than 10s) 
Compiling lib/mix/tasks/ecto.gen.migration.ex (it's taking more than 10s) 
Compiling lib/ecto/query/builder/join.ex (it's taking more than 10s) 
Compiling lib/ecto/query/planner.ex (it's taking more than 10s) 
Compiling lib/ecto/log_entry.ex (it's taking more than 10s) 
Compiling lib/ecto/query/builder/select.ex (it's taking more than 10s) 
Compiling lib/ecto/query/builder/distinct.ex (it's taking more than 10s) 
Compiling lib/ecto/query/builder/limit_offset.ex (it's taking more than 10s) 
Compiling lib/ecto/changeset.ex (it's taking more than 10s) 
Compiling lib/ecto/query/builder/group_by.ex (it's taking more than 10s) 
Compiling lib/ecto/changeset/relation.ex (it's taking more than 10s) 
Compiling lib/ecto/multi.ex (it's taking more than 10s) 
Compiling lib/ecto.ex (it's taking more than 10s) 
Compiling lib/ecto/query/builder.ex (it's taking more than 10s) 
Compiling lib/ecto/adapters/postgres.ex (it's taking more than 10s) 
Generated ecto app 
==> phoenix_ecto 
Compiling 4 files (.ex) 
Generated phoenix_ecto app 
==> phoenix_chat 
Compiling 19 files (.ex) 
Generated phoenix_chat app 
08:49:48.868 [error] GenServer #PID<0.3296.0> terminating 
** (DBConnection.ConnectionError) tcp connect (localhost:5432): connection refused - :econnrefused 
    (db_connection) lib/db_connection/connection.ex:148: DBConnection.Connection.connect/2 
    (connection) lib/connection.ex:622: Connection.enter_connect/5 
    (stdlib) proc_lib.erl:247: :proc_lib.init_p_do_apply/3 
** (Mix) The database for PhoenixChat.Repo couldn't be created: an exception was raised: 
    ** (DBConnection.ConnectionError) tcp connect (localhost:5432): connection refused - :econnrefused 
     (db_connection) lib/db_connection/connection.ex:148: DBConnection.Connection.connect/2 
     (connection) lib/connection.ex:622: Connection.enter_connect/5 
     (stdlib) proc_lib.erl:247: :proc_lib.init_p_do_apply/3 
Build failed !!!.

我想這是因爲在構建服務器似乎是(localhost:5432)，我不認爲它起到很好鳳凰這就通常在端口4000 See this answer for my coming to that conclusion.

如何解決這個？

我改變dev.ex有這樣的配置：

config :phoenix_chat, PhoenixChat.Endpoint, 
    http: [port: {:system, "PORT"}],

那麼我的任務設置爲PORT=4000 mix test，但我仍然得到同樣的錯誤。

編輯：它不會出現在我的設置端口工作，因爲錯誤仍然是：

PORT=4000 mix test 
09:18:34.884 [error] GenServer #PID<0.183.0> terminating 
** (DBConnection.ConnectionError) tcp connect (localhost:5432): connection refused - :econnrefused 
    (db_connection) lib/db_connection/connection.ex:148: DBConnection.Connection.connect/2 
    (connection) lib/connection.ex:622: Connection.enter_connect/5 
    (stdlib) proc_lib.erl:247: :proc_lib.init_p_do_apply/3 
** (Mix) The database for PhoenixChat.Repo couldn't be created: an exception was raised: 
    ** (DBConnection.ConnectionError) tcp connect (localhost:5432): connection refused - :econnrefused 
     (db_connection) lib/db_connection/connection.ex:148: DBConnection.Connection.connect/2 
     (connection) lib/connection.ex:622: Connection.enter_connect/5 
     (stdlib) proc_lib.erl:247: :proc_lib.init_p_do_apply/3 
Build failed !!!.

所以我覺得現在的解決方案可能是this。我對添加ssh密鑰並不瞭解很多。

來源

2017-02-04 BeniaminoBaggins

這對於Phoenix的HTTP端口沒有問題。這是因爲PostgreSQL沒有在CI服務器的localhost：5432上運行。您可能需要在配置項的某處啓用它，或者如果他們在另一個端口上運行PostgreSQL，則可以更改配置。 – Dogbert

@Dogbert會改變'dev.exs'的配置爲'配置：phoenix_chat，PhoenixChat.Repo，適配器：Ecto.Adapters.Postgres，用戶名：「Postgres的」，密碼：「Postgres的」，數據庫：「 phoenix_chat_dev「，主機名：」localhost：5432「， pool_size：10'是否在正確的軌道？（它沒有區別 - 同樣的錯誤） - 更改是主機名 – BeniaminoBaggins

這應該是'hostname：「localhost」，port：5432，...'但5432是默認值，錯誤表示PostgreSQL不能運行在本地主機上：5432。您應該找出主機/端口PostgreSQL在CI服務器上運行，並且如果默認禁用它（例如在Travis中，您必須添加一個配置以啓用PostgreSQL：https：//docs.travis-ci.com/user/數據庫的建立/＃PostgreSQL的）。 – Dogbert

我的筆記本電腦崩潰，並在/usr/local/var/postgres中留下了一個postmaster.pid文件。

刪除後，我的postgres開始工作很好。

如果你想檢查postgres是否正常運行，你可以運行pq_ready來獲得輸出。您應該得到：/tmp:5432 - accepting connections - 根據您的配置，您的端口可能會有所不同。

玩得開心！

來源

2017-09-04 04:57:32 Apie

DBConnection.ConnectionError）tcp connect（localhost：5432）：連接被拒絕 - ：econnrefused

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