我的一个项目具有Python，PostgreSQL和Node依赖项。我有以下regions <- data.frame(ID = LETTERS[1:3],
rows = c(100,8,50))
library(ggplot2)
ggplot(regions, aes(x = reorder(ID,-rows), y = rows))+
geom_col()+
scale_y_continuous(expand = c(0,0))+
xlab("New Name")+
theme_classic()+
theme(axis.text.x = element_text(angle = 45, hjust = 1),
axis.line.x = element_blank(),
axis.ticks.x = element_blank(),
plot.title = element_text(hjust = 0.5))+
ggtitle("Main Title")
文件，根据构建目录有一个docker-compose.yaml。一切都很好，并且可以在Linux机器上运行。但是当我在Mac上工作时，Dockerfile服务未运行。但是我可以从Mac的Docker Desktop运行，也可以通过键入server从控制台运行。但是，当我尝试使用docker-compose up --build server构建所有对象时。在Mac上无法使用。
我在控制台上发现以下错误：
docker-compose up --buildreturn func(*args, **kwargs)
File "/usr/local/lib/python3.8/site-packages/django/db/backends/base/base.py", line 260, in cursor
return self._cursor()
File "/usr/local/lib/python3.8/site-packages/django/db/backends/base/base.py", line 236, in _cursor
self.ensure_connection()
File "/usr/local/lib/python3.8/site-packages/django/utils/asyncio.py", line 26, in inner
File "/usr/local/lib/python3.8/site-packages/django/db/backends/base/base.py", line 220, in ensure_connection
self.connect()
File "/usr/local/lib/python3.8/site-packages/django/db/utils.py", line 90, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/usr/local/lib/python3.8/site-packages/django/db/backends/base/base.py", line 197, in connect
self.connection = self.get_new_connection(conn_params)
File "/usr/local/lib/python3.8/site-packages/django/db/backends/postgresql/base.py", line 185, in get_new_connection
connection = Database.connect(**conn_params)
File "/usr/local/lib/python3.8/site-packages/psycopg2/__init__.py", line 126, in connect
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
django.db.utils.OperationalError: could not connect to server: Connection refused
Is the server running on host "db" (172.19.0.2) and accepting
TCP/IP connections on port 5432?
Traceback (most recent call last):
psycopg2.OperationalError: could not connect to server: Connection refused
Is the server running on host "db" (172.19.0.3) and accepting
The above exception was the direct cause of the following exception:
File "/app/server/manage.py", line 15, in <module>
execute_from_command_line(sys.argv)
File "/usr/local/lib/python3.8/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line
utility.execute()
File "/usr/local/lib/python3.8/site-packages/django/core/management/__init__.py", line 395, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python3.8/site-packages/django/core/management/base.py", line 328, in run_from_argv
self.execute(*args, **cmd_options)
File "/usr/local/lib/python3.8/site-packages/django/core/management/base.py", line 369, in execute
output = self.handle(*args, **options)
File "/usr/local/lib/python3.8/site-packages/django/core/management/base.py", line 83, in wrapped
res = handle_func(*args, **kwargs)
File "/usr/local/lib/python3.8/site-packages/django/core/management/commands/migrate.py", line 86, in handle
executor = MigrationExecutor(connection, self.migration_progress_callback)
File "/usr/local/lib/python3.8/site-packages/django/db/migrations/executor.py", line 18, in __init__
self.loader = MigrationLoader(self.connection)
File "/usr/local/lib/python3.8/site-packages/django/db/migrations/loader.py", line 49, in __init__
self.build_graph()
File "/usr/local/lib/python3.8/site-packages/django/db/migrations/loader.py", line 212, in build_graph
self.applied_migrations = recorder.applied_migrations()
File "/usr/local/lib/python3.8/site-packages/django/db/migrations/recorder.py", line 76, in applied_migrations
if self.has_table():
File "/usr/local/lib/python3.8/site-packages/django/db/migrations/recorder.py", line 56, in has_table
return self.Migration._meta.db_table in self.connection.introspection.table_names(self.connection.cursor())
docker-compose.yamlversion: '3.7'
services:
db:
image: postgres:11.1-alpine
container_name: baraticn_db
ports:
- '5434:5432'
volumes:
- ./postgres_data:/var/lib/postgresql/data/
server:
build: ./server
container_name: baraticn_python
command: sh -c "python /app/server/manage.py migrate && python /app/server/manage.py runserver 0.0.0.0:8081"
working_dir: /app/server
environment:
- PYTHONDONTWRITEBYTECODE=1
- PYTHONUNBUFFERED=1
volumes:
- ./server:/app/server:cached
ports:
- '8081:8081'
depends_on:
- db
client:
build: ./client
container_name: baraticn_vuejs
command: sh -c "yarn install && yarn serve"
working_dir: /app/client
volumes:
- ./client:/app/client:cached
ports:
- '8080:8080'
server/Dockerfile答案 0 :(得分：0)
在对此进行了一些研究之后，我发现根本没有问题。在Mac上，我为Docker容器分配了1个CPU和1GB RAM。因此，我正在运行并缓慢启动容器。我的Python应用服务器depends_on PostgreSQL数据库服务器。 数据库容器正在运行，但尚未准备就绪。因此，python服务器首次出现故障。
快速解决方案：
restart: on-failure:10
已在python server服务上添加。我的意思是，每次失败后，它将尝试运行10次。