Question

我有一个Dockerfile

COPY ./docker-entrypoint.sh /

RUN chmod +x /docker-entrypoint.sh

USER postgres

ENTRYPOINT ["/docker-entrypoint.sh"]

其中docker-entrypoint.sh是：

#!/bin/sh

# Before PostgreSQL can function correctly, the database cluster must be initialized:
initdb -D /var/lib/postgres/data


#start postgres server
/usr/bin/postgres -D /var/lib/postgres/data &


# create a user or role
psql -d postgres -c "CREATE USER someuser WITH PASSWORD 'jkhkjah';" 

# create database 

psql -d postgres -c "CREATE DATABASE dockertest OWNER 'someuser';"

它不会创建某些用户和dockertest数据库。怎么做

Answer 1

看看official docker postgresql image

它具有这样的工作流程：

执行docker-entrypoint.sh
启动postgresql服务器

因此，您需要像这样修改Dockerfile：

COPY ./docker-entrypoint.sh /

RUN chmod +x /docker-entrypoint.sh

USER postgres

ENTRYPOINT ["/docker-entrypoint.sh"]

EXPOSE 5432
CMD ["postgres"]

然后像这样修改您的docker-entrypoint.sh：

#!/bin/sh

# Before PostgreSQL can function correctly, the database cluster must be initialized:
initdb -D /var/lib/postgres/data

# internal start of server in order to allow set-up using psql-client
# does not listen on external TCP/IP and waits until start finishes
pg_ctl -D "/var/lib/postgres/data" -o "-c listen_addresses=''" -w start

# create a user or role
psql -d postgres -c "CREATE USER someuser WITH PASSWORD 'jkhkjah';" 

# create database 
psql -v ON_ERROR_STOP=1 -d postgres -c "CREATE DATABASE dockertest OWNER 'someuser';"

# stop internal postgres server
pg_ctl -v ON_ERROR_STOP=1 -D "/var/lib/postgres/data" -m fast -w stop

exec "$@"

我认为您的主要错误是在后台启动PostgreSQL

/usr/bin/postgres -D /var/lib/postgres/data &

并在服务器启动之前立即开始执行查询。

我还建议向psql添加-v ON_ERROR_STOP=1参数，以查看详细信息并在发生错误时停止进程

PostgreSQL：dockerfile从入口点脚本创建用户和数据库

1 个答案: