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This document uses PHP Chinese website manual Release
假設(shè)沒(méi)有符合您需要的碼頭形象碼頭樞紐,你可以自己創(chuàng)造一個(gè)。
首先創(chuàng)建一個(gè)新的Dockerfile
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注這個(gè)PostgreSQL設(shè)置只用于開(kāi)發(fā)目的。請(qǐng)參考PostgreSQL文檔來(lái)微調(diào)這些設(shè)置,使其具有適當(dāng)?shù)陌踩浴?/p>
# # example Dockerfile for https://docs.docker.com/examples/postgresql_service/# FROM ubuntu # Add the PostgreSQL PGP key to verify their Debian packages.# It should be the same key as https://www.postgresql.org/media/keys/ACCC4CF8.asc RUN apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8 # Add PostgreSQL's repository. It contains the most recent stable release # of PostgreSQL, ``9.3``.RUN echo "deb http://apt.postgresql.org/pub/repos/apt/ precise-pgdg main" > /etc/apt/sources.list.d/pgdg.list # Install ``python-software-properties``, ``software-properties-common`` and PostgreSQL 9.3# There are some warnings (in red) that show up during the build. You can hide # them by prefixing each apt-get statement with DEBIAN_FRONTEND=noninteractive RUN apt-get update && apt-get install -y python-software-properties software-properties-common postgresql-9.3 postgresql-client-9.3 postgresql-contrib-9.3# Note: The official Debian and Ubuntu images automatically ``apt-get clean``# after each ``apt-get``# Run the rest of the commands as the ``postgres`` user created by the ``postgres-9.3`` package when it was ``apt-get installed``USER postgres # Create a PostgreSQL role named ``docker`` with ``docker`` as the password and # then create a database `docker` owned by the ``docker`` role.# Note: here we use ``&&\`` to run commands one after the other - the ``\``# allows the RUN command to span multiple lines.RUN /etc/init.d/postgresql start &&\ psql --command "CREATE USER docker WITH SUPERUSER PASSWORD 'docker';" &&\ createdb -O docker docker # Adjust PostgreSQL configuration so that remote connections to the # database are possible.RUN echo "host all all 0.0.0.0/0 md5" >> /etc/postgresql/9.3/main/pg_hba.conf # And add ``listen_addresses`` to ``/etc/postgresql/9.3/main/postgresql.conf``RUN echo "listen_addresses='*'" >> /etc/postgresql/9.3/main/postgresql.conf # Expose the PostgreSQL port EXPOSE 5432# Add VOLUMEs to allow backup of config, logs and databases VOLUME ["/etc/postgresql", "/var/log/postgresql", "/var/lib/postgresql"]# Set the default command to run when starting the container CMD ["/usr/lib/postgresql/9.3/bin/postgres", "-D", "/var/lib/postgresql/9.3/main", "-c", "config_file=/etc/postgresql/9.3/main/postgresql.conf"]
從Dockerfile構(gòu)建一個(gè)圖像,為它指定一個(gè)名稱。
$ docker build -t eg_postgresql .
在前臺(tái)%29中運(yùn)行PostgreSQL服務(wù)器容器%28:
$ docker run --rm -P --name pg_test eg_postgresql
有兩種連接PostgreSQL服務(wù)器的方法。我們可以用鏈接容器,或者我們可以從主機(jī)%28或網(wǎng)絡(luò)%29訪問(wèn)它。
注*
--rm
在容器成功退出時(shí)移除容器及其圖像。
容器可以直接鏈接到另一個(gè)容器的港口-link remote_name:local_alias
在客戶的docker run
這將設(shè)置一些環(huán)境變量,然后可用于連接:
$ docker run --rm -t -i --link pg_test:pg eg_postgresql bash postgres@7ef98b1b7243:/$ psql -h $PG_PORT_5432_TCP_ADDR -p $PG_PORT_5432_TCP_PORT -d docker -U docker --password
假設(shè)安裝了PostgreSQLClient,也可以使用主機(jī)映射端口進(jìn)行測(cè)試。你需要用docker ps
要了解容器首先映射到哪個(gè)本地主機(jī)端口:
$ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 5e24362f27f6 eg_postgresql:latest /usr/lib/postgresql/ About an hour ago Up About an hour 0.0.0.0:49153->5432/tcp pg_test $ psql -h localhost -p 49153 -d docker -U docker --password
一旦您通過(guò)身份驗(yàn)證并擁有docker =#
提示,您可以創(chuàng)建一個(gè)表并填充它。
psql (9.3.1)Type "help" for help.$ docker=# CREATE TABLE cities (docker(# name varchar(80),docker(# location pointdocker(# );CREATE TABLE $ docker=# INSERT INTO cities VALUES ('San Francisco', '(-194.0, 53.0)');INSERT 0 1$ docker=# select * from cities; name | location---------------+----------- San Francisco | (-194,53)(1 row)
可以使用定義的卷檢查PostgreSQL日志文件,并備份配置和數(shù)據(jù):
$ docker run --rm --volumes-from pg_test -t -i busybox sh/ # ls bin etc lib linuxrc mnt proc run sys usr dev home lib64 media opt root sbin tmp var/ # ls /etc/postgresql/9.3/main/environment pg_hba.conf postgresql.conf pg_ctl.conf pg_ident.conf start.conf/tmp # ls /var/log ldconfig postgresql