博士后考试不会开始。（包括Django和Docker）_Django_Postgresql_Docker

博士后考试不会开始。（包括Django和Docker）

django postgresql docker

博士后考试不会开始。（包括Django和Docker）,django,postgresql,docker,Django,Postgresql,Docker,我知道我明白了有人能帮我找出哪里出了问题吗当我这样做的时候 2017-05-01 16:53:36 CDT LOG: could not bind IPv6 socket: No error 2017-05-01 16:53:36 CDT HINT: Is another postmaster already running on port 5432? If not, wait a few seconds and retry. 2017-05-01 16:53:36 CDT LOG:

我知道

我明白了

有人能帮我找出哪里出了问题吗

当我这样做的时候

2017-05-01 16:53:36 CDT LOG:  could not bind IPv6 socket: No error
2017-05-01 16:53:36 CDT HINT:  Is another postmaster already running on port 
5432? If not, wait a few seconds and retry.
2017-05-01 16:53:36 CDT LOG:  could not bind IPv4 socket: No error
2017-05-01 16:53:36 CDT HINT:  Is another postmaster already running on port 
5432? If not, wait a few seconds and retry.
2017-05-01 16:53:36 CDT WARNING:  could not create listen socket for "*"
2017-05-01 16:53:36 CDT FATAL:  could not create any TCP/IP sockets

psql -U postgres -h localhost

它很好用

虽然我需要启动postgres，让它在Docker和Django上运行

请帮忙

提前谢谢

编辑：

当我这样做的时候

2017-05-01 16:53:36 CDT LOG:  could not bind IPv6 socket: No error
2017-05-01 16:53:36 CDT HINT:  Is another postmaster already running on port 
5432? If not, wait a few seconds and retry.
2017-05-01 16:53:36 CDT LOG:  could not bind IPv4 socket: No error
2017-05-01 16:53:36 CDT HINT:  Is another postmaster already running on port 
5432? If not, wait a few seconds and retry.
2017-05-01 16:53:36 CDT WARNING:  could not create listen socket for "*"
2017-05-01 16:53:36 CDT FATAL:  could not create any TCP/IP sockets

psql -U postgres -h localhost

我明白了

$docker组合
正在启动asynchttpproxy\u postgres\u 1
正在启动asynchttpproxy\u web\u 1
附加到asynchttpproxy\u postgres\u 1、asynchttpproxy\u web\u 1
postgres_1|日志：数据库系统中断；最后一次被发现是在2017年-
05-01 21:27:43 UTC
postgres_1|日志：数据库系统未正确关闭；正在进行自动恢复
postgres_1|日志：0/150F720处的记录长度无效：需要24，得到0
postgres_1|日志：不需要重做
postgres_1|日志：现在已启用MultiXact成员环绕保护
postgres_1|日志：数据库系统已准备好接受连接
web_1 |正在执行系统检查。。。
网络1|
web_1 |系统检查未发现任何问题（0静音）。
web_1 |由启动的线程中存在未处理的异常
web_1 |回溯（最近一次呼叫最后一次）：
web|1 |文件“/usr/local/lib/python3.6/site packages/django/db/backends/base/base.py”，第130行，确保连接
web|u 1 | self.connect（）
web|1 |文件“/usr/local/lib/python3.6/site packages/django/db/backends/base/base.py”，第119行，在connect中
web_1 | self.connection=self.get_new_connection（连接参数）
web|1 |文件“/usr/local/lib/python3.6/site packages/django/db/backends/postgresql_psycopg2/base.py”，第176行，在get_new|连接中
web_1 |连接=数据库.connect（**连接参数）
web|1 |文件“/usr/local/lib/python3.6/site packages/psycopg2/_init__.py”，第164行，在connect中
网络连接=连接（dsn，连接工厂=连接工厂，异步=异步）
web_1 | psycopg2.OperationalError:无法连接到服务器：连接被拒绝
web|1是在主机“localhost”（127.0.0.1）上运行并接受
端口5432上的web_1| TCP/IP连接？
web_1 |无法连接到服务器：无法分配请求的地址
web|1是在主机“localhost”（：：1）上运行并接受
端口5432上的web_1| TCP/IP连接？

这里实际上显示了两个问题：

第一，当您试图手动运行PostgreSQL时，您直接在主机操作系统中运行它，并且已经有一个副本在那里运行，占用端口5432

运行docker时的第二个问题是，Django设置被配置为指向

localhost

上的数据库。当您在Docker外部运行时，这将起作用，PostgreSQL副本直接在主机操作系统中运行，但在Docker中不起作用，因为web应用程序和数据库服务器在单独的容器中运行

要解决第二个问题，您只需更新Django的设置以连接到主机

postgres

，因为这是您在

docker compose.yml

中用于数据库容器的名称，这里实际上显示了两个问题：

第一，当您试图手动运行PostgreSQL时，您直接在主机操作系统中运行它，并且已经有一个副本在那里运行，占用端口5432

运行docker时的第二个问题是，Django设置被配置为指向

localhost

要解决第二个问题，只需更新Django的设置即可连接到主机

postgres

，由于这是您在

docker compose.yml

中用于数据库容器的名称，您的问题是在启动django的同时在docker compose上启动

postgres

，因此，没有足够的时间进行数据库设置，正如您在端口5432上的连接

TCP/IP连接中看到的错误一样？

。我已经解决了在docker-compose.yml上运行bash命令并创建wait-bd.sh bash脚本的问题

wait-bd.sh

$ docker-compose up
Starting asynchttpproxy_postgres_1
Starting asynchttpproxy_web_1
Attaching to asynchttpproxy_postgres_1, asynchttpproxy_web_1
postgres_1  | LOG:  database system was interrupted; last known up at 2017-

05-01 21:27:43 UTC
postgres_1  | LOG:  database system was not properly shut down; automatic recovery in progress
postgres_1  | LOG:  invalid record length at 0/150F720: wanted 24, got 0
postgres_1  | LOG:  redo is not required
postgres_1  | LOG:  MultiXact member wraparound protections are now enabled
postgres_1  | LOG:  database system is ready to accept connections
web_1       | Performing system checks...
web_1       |
web_1       | System check identified no issues (0 silenced).
web_1       | Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x7f51f88bef28>
web_1       | Traceback (most recent call last):
web_1       |   File "/usr/local/lib/python3.6/site-packages/django/db/backends/base/base.py", line 130, in ensure_connection
web_1       |     self.connect()
web_1       |   File "/usr/local/lib/python3.6/site-packages/django/db/backends/base/base.py", line 119, in connect
web_1       |     self.connection = self.get_new_connection(conn_params)
web_1       |   File "/usr/local/lib/python3.6/site-packages/django/db/backends/postgresql_psycopg2/base.py", line 176, in get_new_connection
web_1       |     connection = Database.connect(**conn_params)
web_1       |   File "/usr/local/lib/python3.6/site-packages/psycopg2/__init__.py", line 164, in connect
web_1       |     conn = _connect(dsn, connection_factory=connection_factory, async=async)
web_1       | psycopg2.OperationalError: could not connect to server: Connection refused
web_1       |   Is the server running on host "localhost" (127.0.0.1) and accepting
web_1       |   TCP/IP connections on port 5432?
web_1       | could not connect to server: Cannot assign requested address
web_1       |   Is the server running on host "localhost" (::1) and accepting
web_1       |   TCP/IP connections on port 5432?

在docker-compose.yml中，在django容器中添加tag命令：

#!/bin/bash
  while true; do
    COUNT_PG=`psql postgresql://username:password@localhost:5432/name_db -c '\l \q' | grep "name_db" | wc -l`
    if ! [ "$COUNT_PG" -eq "0" ]; then
       break
    fi
       echo "Waiting Database Setup"
       sleep 10
  done

此脚本将等待您进行数据库设置，因此将运行django安装容器。

您的问题是在启动django的同时在docker compose上启动

postgres

，因此没有足够的时间进行数据库设置，正如您在端口5432上的连接

TCP/IP连接中看到的错误一样？

。我已经解决了在docker-compose.yml上运行bash命令并创建wait-bd.sh bash脚本的问题

wait-bd.sh

$ docker-compose up
Starting asynchttpproxy_postgres_1
Starting asynchttpproxy_web_1
Attaching to asynchttpproxy_postgres_1, asynchttpproxy_web_1
postgres_1  | LOG:  database system was interrupted; last known up at 2017-

05-01 21:27:43 UTC
postgres_1  | LOG:  database system was not properly shut down; automatic recovery in progress
postgres_1  | LOG:  invalid record length at 0/150F720: wanted 24, got 0
postgres_1  | LOG:  redo is not required
postgres_1  | LOG:  MultiXact member wraparound protections are now enabled
postgres_1  | LOG:  database system is ready to accept connections
web_1       | Performing system checks...
web_1       |
web_1       | System check identified no issues (0 silenced).
web_1       | Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x7f51f88bef28>
web_1       | Traceback (most recent call last):
web_1       |   File "/usr/local/lib/python3.6/site-packages/django/db/backends/base/base.py", line 130, in ensure_connection
web_1       |     self.connect()
web_1       |   File "/usr/local/lib/python3.6/site-packages/django/db/backends/base/base.py", line 119, in connect
web_1       |     self.connection = self.get_new_connection(conn_params)
web_1       |   File "/usr/local/lib/python3.6/site-packages/django/db/backends/postgresql_psycopg2/base.py", line 176, in get_new_connection
web_1       |     connection = Database.connect(**conn_params)
web_1       |   File "/usr/local/lib/python3.6/site-packages/psycopg2/__init__.py", line 164, in connect
web_1       |     conn = _connect(dsn, connection_factory=connection_factory, async=async)
web_1       | psycopg2.OperationalError: could not connect to server: Connection refused
web_1       |   Is the server running on host "localhost" (127.0.0.1) and accepting
web_1       |   TCP/IP connections on port 5432?
web_1       | could not connect to server: Cannot assign requested address
web_1       |   Is the server running on host "localhost" (::1) and accepting
web_1       |   TCP/IP connections on port 5432?

在docker-compose.yml中，在django容器中添加tag命令：

#!/bin/bash
  while true; do
    COUNT_PG=`psql postgresql://username:password@localhost:5432/name_db -c '\l \q' | grep "name_db" | wc -l`
    if ! [ "$COUNT_PG" -eq "0" ]; then
       break
    fi
       echo "Waiting Database Setup"
       sleep 10
  done

此脚本将等待您进行数据库安装，因此将运行django安装容器。

听起来您已经有一个postgresql实例正在运行，因此您实际上不需要手动启动它。Joey，不，当我进行docker compose时，我会在编辑操作中得到回溯，这是另一个问题。您告诉Django连接到

localhost

，但您应该在单独的Docker容器上运行PostgreSQL。因此，您应该告诉Django连接到

postgres

的主机名。非常感谢您的提示，没问题！我可能应该把它转换成一个答案…听起来你已经有一个postgresql实例在运行，所以你实际上不需要手动启动它。Joey，不，当我做docker compose时，我在编辑OpgreSQL时得到了回溯，这是另一个问题。你是