我是 docker 的新手，不确定我可能在哪里犯了错误。
docker-compose up -d --buildpython manage.py runserver
对 redis 层使用以下 settings.py 设置：
CHANNEL_LAYERS = {
"default": {
"BACKEND": "channels_redis.core.RedisChannelLayer",
"CONFIG": {
"hosts": [("0.0.0.0", 6379)],
},
},
}
并为 redis 层调用一个 docker 容器：
docker run -p 6379:6379 -d redis:5
docker-compose 的新设置如下：
version: '3.10'
services:
web:
container_name: web
build:
context: ./app
dockerfile: Dockerfile
command: bash -c "gunicorn core.wsgi:application --bind 0.0.0.0:8000"
volumes:
- ./app/:/usr/src/app/
- static_volume:/usr/src/app/staticfiles/
- media_volume:/usr/src/app/media/
ports:
- 8000:8000
env_file:
- ./.env.dev
depends_on:
- db
networks:
- app_network
redis:
container_name: redis
image: redis:5
ports:
- 6379:6379
networks:
- app_network
restart: on-failure
db:
container_name: db
image: postgres
volumes:
- postgres_data:/var/lib/postgresql/data/
environment:
- ./.env.psql
ports:
- 5432:5432
networks:
- app_network
volumes:
postgres_data:
static_volume:
media_volume:
networks:
app_network:
使用此设置.py：
CHANNEL_LAYERS = {
"default": {
"BACKEND": "channels_redis.core.RedisChannelLayer",
"CONFIG": {
"hosts": [("redis", 6379)],
},
},
}
成功构建容器并运行后
docker-compose logs -fAttaching to web, db, redis
db | The files belonging to this database system will be owned by user "postgres".
db | This user must also own the server process.
db |
db | The database cluster will be initialized with locale "en_US.utf8".
db | The default database encoding has accordingly been set to "UTF8".
db | The default text search configuration will be set to "english".
db |
db | Data page checksums are disabled.
db |
db | fixing permissions on existing directory /var/lib/postgresql/data ... ok
db | creating subdirectories ... ok
db | selecting dynamic shared memory implementation ... posix
db | selecting default max_connections ... 100
db | selecting default shared_buffers ... 128MB
db | selecting default time zone ... Etc/UTC
db | creating configuration files ... ok
db | running bootstrap script ... ok
db | performing post-bootstrap initialization ... ok
db | initdb: warning: enabling "trust" authentication for local connections
db | You can change this by editing pg_hba.conf or using the option -A, or
db | --auth-local and --auth-host, the next time you run initdb.
db | syncing data to disk ... ok
db |
db |
db | Success. You can now start the database server using:
db |
db | pg_ctl -D /var/lib/postgresql/data -l logfile start
db |
db | waiting for server to start....2022-06-27 16:18:30.303 UTC [48] LOG: starting PostgreSQL 14.4 (Debian 14.4-1.pgdg110+1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 10.2.1-6) 10.2.1 20210110, 64-bit
db | 2022-06-27 16:18:30.310 UTC [48] LOG: listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
db | 2022-06-27 16:18:30.334 UTC [49] LOG: database system was shut down at 2022-06-27 16:18:29 UTC
db | 2022-06-27 16:18:30.350 UTC [48] LOG: database system is ready to accept connections
db | done
db | server started
db | CREATE DATABASE
db |
db |
db | /usr/local/bin/docker-entrypoint.sh: ignoring /docker-entrypoint-initdb.d/*
db |
db | 2022-06-27 16:18:31.587 UTC [48] LOG: received fast shutdown request
db | waiting for server to shut down....2022-06-27 16:18:31.596 UTC [48] LOG: aborting any active transactions
db | 2022-06-27 16:18:31.601 UTC [48] LOG: background worker "logical replication launcher" (PID 55) exited with exit code 1
db | 2022-06-27 16:18:31.602 UTC [50] LOG: shutting down
db | 2022-06-27 16:18:31.650 UTC [48] LOG: database system is shut down
db | done
db | server stopped
db |
db | PostgreSQL init process complete; ready for start up.
db |
db | 2022-06-27 16:18:31.800 UTC [1] LOG: starting PostgreSQL 14.4 (Debian 14.4-1.pgdg110+1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 10.2.1-6) 10.2.1 20210110, 64-bit
db | 2022-06-27 16:18:31.804 UTC [1] LOG: listening on IPv4 address "0.0.0.0", port 5432
db | 2022-06-27 16:18:31.804 UTC [1] LOG: listening on IPv6 address "::", port 5432
db | 2022-06-27 16:18:31.810 UTC [1] LOG: listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
db | 2022-06-27 16:18:31.818 UTC [62] LOG: database system was shut down at 2022-06-27 16:18:31 UTC
db | 2022-06-27 16:18:31.825 UTC [1] LOG: database system is ready to accept connections
redis | 1:C 27 Jun 2022 16:18:29.080 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
redis | 1:C 27 Jun 2022 16:18:29.080 # Redis version=5.0.14, bits=64, commit=00000000, modified=0, pid=1, just started
redis | 1:C 27 Jun 2022 16:18:29.080 # Warning: no config file specified, using the default config. In order to specify a config file use redis-server /path/to/redis.conf
redis | 1:M 27 Jun 2022 16:18:29.082 * Running mode=standalone, port=6379.
redis | 1:M 27 Jun 2022 16:18:29.082 # Server initialized
redis | 1:M 27 Jun 2022 16:18:29.082 * Ready to accept connections
web | Waiting for postgres...
web | PostgreSQL started
web | Waiting for redis...
web | redis started
web | [2022-06-27 16:18:33 +0000] [1] [INFO] Starting gunicorn 20.1.0
web | [2022-06-27 16:18:33 +0000] [1] [INFO] Listening at: http://0.0.0.0:8000 (1)
web | [2022-06-27 16:18:33 +0000] [1] [INFO] Using worker: sync
web | [2022-06-27 16:18:33 +0000] [8] [INFO] Booting worker with pid: 8
web | [2022-06-27 16:19:18 +0000] [1] [CRITICAL] WORKER TIMEOUT (pid:8)
web | [2022-06-27 18:19:18 +0200] [8] [INFO] Worker exiting (pid: 8)
web | [2022-06-27 16:19:18 +0000] [9] [INFO] Booting worker with pid: 9
web | Not Found: /ws/user_consumer/1/
web | Not Found: /ws/accueil/accueil/
web | Not Found: /ws/user_consumer/1/
web | Not Found: /ws/accueil/accueil/
和
docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
cb3e489e0831 dermatology-project_web "/usr/src/app/entryp…" 35 minutes ago Up 35 minutes 0.0.0.0:8000->8000/tcp, :::8000->8000/tcp web
aee14c8665d0 postgres "docker-entrypoint.s…" 35 minutes ago Up 35 minutes 0.0.0.0:5432->5432/tcp, :::5432->5432/tcp db
94c29591b352 redis:5 "docker-entrypoint.s…" 35 minutes ago Up 35 minutes 0.0.0.0:6379->6379/tcp, :::6379->6379/tcp redis
构建 Dockerfile：
# set work directory
WORKDIR /usr/src/app
# set environment variables
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1
# install psycopg2 dependencies
RUN apt-get update
RUN apt-get install -y libpq-dev python3-pip python-dev postgresql postgresql-contrib netcat
# install dependencies
RUN pip install --upgrade pip
COPY ./requirements.txt .
RUN pip install -r requirements.txt
# copy entrypoint.sh
COPY ./entrypoint.sh .
RUN sed -i 's/\r$//g' /usr/src/app/entrypoint.sh
RUN chmod +x /usr/src/app/entrypoint.sh
# create the appropriate directories for staticfiles
# copy project
COPY . .
# staticfiles
RUN python manage.py collectstatic --no-input --clear
# run entrypoint.sh
ENTRYPOINT ["/usr/src/app/entrypoint.sh"]
和检查连接的入口点：
#!/bin/sh
if [ "$DATABASE" = "postgres" ]
then
echo "Waiting for postgres..."
while ! nc -z $SQL_HOST $SQL_PORT; do
sleep 0.1
done
echo "PostgreSQL started"
fi
if [ "$CHANNEL" = "redis" ]
then
echo "Waiting for redis..."
while ! nc -z $REDIS_HOST $REDIS_PORT; do
sleep 0.1
done
echo "redis started"
fi
#python manage.py flush --no-input
#python manage.py migrate
exec "$@"
我也试过像以前一样单独运行 redis 容器并维护工作容器，但这也不起作用。我也在另一个端口上运行 daphne 并传递 asgi:application (
daphne -p 8001 myproject.asgi:application谢谢
为了让它工作，我需要将 wsgi 和 asgi 服务器彼此分开运行，每个服务器都有自己的容器。此外，之前将端口暴露给应用程序的服务“web”也需要为每个容器运行两次，nginx 代理向上游到每个相应的端口。
https://github.com/pplonski/simple-tasks
在这里他解释了我需要什么等等。他还使用 celery workers 来管理基于分布式消息传递的异步任务队列/作业队列，这对我的项目来说有点大材小用但很漂亮。
version: '2'
services:
nginx:
container_name: nginx
restart: always
build: ./nginx
ports:
- 1337:80
volumes:
- static_volume:/usr/src/app/staticfiles/
- media_volume:/usr/src/app/media/
depends_on:
- wsgiserver
- asgiserver
postgres:
container_name: postgres
restart: always
image: postgres
volumes:
- postgres_data:/var/lib/postgresql/data/
ports:
- 5433:5432
expose:
- 5432
environment:
- ./.env.db
redis:
container_name: redis
image: redis:5
restart: unless-stopped
ports:
- 6378:6379
wsgiserver:
build:
context: ./app
dockerfile: Dockerfile
container_name: wsgiserver
command: gunicorn core.wsgi:application --bind 0.0.0.0:8000
env_file:
- ./.env.dev
volumes:
- ./app/:/usr/src/app/
- static_volume:/usr/src/app/staticfiles/
- media_volume:/usr/src/app/media/
links:
- postgres
- redis
expose:
- 8000
asgiserver:
build:
context: ./app
dockerfile: Dockerfile
container_name: asgiserver
command: daphne core.asgi:application -b 0.0.0.0 -p 9000
env_file:
- ./.env.dev
volumes:
- ./app/:/usr/src/app/
links:
- postgres
- redis
expose:
- 9000
volumes:
static_volume:
media_volume:
postgres_data:
#!/bin/sh
if [ "$DATABASE" = "postgres" ]
then
echo "Waiting for postgres..."
while ! nc -z $SQL_HOST $SQL_PORT; do
sleep 0.1
done
echo "PostgreSQL started"
fi
#python manage.py flush --no-input
#python manage.py migrate
exec "$@"
nginx.conf:
server {
listen 80;
# gunicon wsgi server
location / {
try_files $uri @proxy_api;
}
location @proxy_api {
proxy_set_header X-Forwarded-Proto https;
proxy_set_header X-Url-Scheme $scheme;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_redirect off;
proxy_pass http://wsgiserver:8000;
}
# ASGI
# map websocket connection to daphne
location /ws {
try_files $uri @proxy_to_ws;
}
location @proxy_to_ws {
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_redirect off;
proxy_pass http://asgiserver:9000;
}
# static and media files
location /static/ {
alias /usr/src/app/staticfiles/;
}
location /media/ {
alias /usr/src/app/media/;
}
}
nginx 的 Dockerfile：
FROM nginx:1.21
RUN rm /etc/nginx/conf.d/default.conf
COPY nginx.conf /etc/nginx/conf.d
如果有人以此为参考，这不是生产容器，还需要进一步的步骤。
这篇文章解释了另一个步骤： https://testdriven.io/blog/dockerizing-django-with-postgres-gunicorn-and-nginx/#conclusion
，以及在结论链接中使用带有 Docker 和 Let's Encrypt 的 AWS 保护应用程序。
Ramon，你能展示一下 Dockerfile 的内容吗？