因此,我遵循了本教程:
https://realpython.com/blog/python/django-development-with-docker-compose-and-machine/
我已经启动并运行了所有程序,但是发生了一些我无法理解或理解的事情.
在主要的Docker-Compose中,我们有:
web:
restart: always
build: ./web
expose:
- "8000"
links:
- postgres:postgres
- redis:redis
volumes:
- /usr/src/app
- /usr/src/app/static
env_file: .env
command: /usr/local/bin/gunicorn docker_django.wsgi:application -w 2 -b :8000
postgres:
restart: always
image: postgres:latest
ports:
- "5432:5432"
volumes:
- pgdata:/var/lib/postgresql/data/
您会注意到其中包含一个env_file:
DB_NAME=postgres
DB_USER=postgres
DB_PASS=postgres
我的问题是何时设置postgres用户和密码?如果我运行此docker-compose,则一切正常,这意味着Web应用程序可以将凭据传递到postgress数据库并建立连接.但是,我无法遵循这些信息,这些信息是首先设置的.
我假设在基本的postgres Dockerfile中,会有一些指令来设置数据库名称,用户名和密码.我不知道.这是下面的基本postgres Dockerfile的副本.
# vim:set ft=dockerfile:
FROM debian:jessie
# explicitly set user/group IDs
RUN groupadd -r postgres --gid=999 && useradd -r -g postgres --uid=999 postgres
# grab gosu for easy step-down from root
ENV GOSU_VERSION 1.7
RUN set -x \
&& apt-get update && apt-get install -y --no-install-recommends ca-certificates wget && rm -rf /var/lib/apt/lists/* \
&& wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" \
&& wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture).asc" \
&& export GNUPGHOME="$(mktemp -d)" \
&& gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
&& gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
&& rm -r "$GNUPGHOME" /usr/local/bin/gosu.asc \
&& chmod +x /usr/local/bin/gosu \
&& gosu nobody true \
&& apt-get purge -y --auto-remove ca-certificates wget
# make the "en_US.UTF-8" locale so postgres will be utf-8 enabled by default
RUN apt-get update && apt-get install -y locales && rm -rf /var/lib/apt/lists/* \
&& localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
ENV LANG en_US.utf8
RUN mkdir /docker-entrypoint-initdb.d
RUN apt-key adv --keyserver ha.pool.sks-keyservers.net --recv-keys B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8
ENV PG_MAJOR 9.6
ENV PG_VERSION 9.6.1-1.pgdg80+1
RUN echo 'deb http://apt.postgresql.org/pub/repos/apt/ jessie-pgdg main' $PG_MAJOR > /etc/apt/sources.list.d/pgdg.list
RUN apt-get update \
&& apt-get install -y postgresql-common \
&& sed -ri 's/#(create_main_cluster) .*$/\1 = false/' /etc/postgresql-common/createcluster.conf \
&& apt-get install -y \
postgresql-$PG_MAJOR=$PG_VERSION \
postgresql-contrib-$PG_MAJOR=$PG_VERSION \
&& rm -rf /var/lib/apt/lists/*
# make the sample config easier to munge (and "correct by default")
RUN mv -v /usr/share/postgresql/$PG_MAJOR/postgresql.conf.sample /usr/share/postgresql/ \
&& ln -sv ../postgresql.conf.sample /usr/share/postgresql/$PG_MAJOR/ \
&& sed -ri "s!^#?(listen_addresses)\s*=\s*\S+.*!\1 = '*'!" /usr/share/postgresql/postgresql.conf.sample
RUN mkdir -p /var/run/postgresql && chown -R postgres /var/run/postgresql
ENV PATH /usr/lib/postgresql/$PG_MAJOR/bin:$PATH
ENV PGDATA /var/lib/postgresql/data
VOLUME /var/lib/postgresql/data
COPY docker-entrypoint.sh /
ENTRYPOINT ["/docker-entrypoint.sh"]
EXPOSE 5432
CMD ["postgres"]
最佳答案
我认为postgres用户和密码是在入口点设置的,就像官方图像入口点的第23行一样.
原文链接:https://www.f2er.com/docker/532684.html您可以检查您的入口点吗?