在Docker上玩转PostgreSQL -- Mac篇[转]

原文链接 https://yq.aliyun.com/articles/2307

战前准备

大家以热烈的掌声来欢迎神器：Docker Toolbox登场!

简述

Docker Toolbox的诞生是广大Mac和Windows用户玩转Docker的福音。

再也不用再折腾boot2docker各种墙的问题，俺是不会告诉你：运行boot2docker
init会有一种让你砸掉键盘的冲动，好吧，小编还真砸掉一块了，-_-!!。

安装Homebrew

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

安装Cask

brew install caskroom/cask/brew-cask

安装Docker Toolbox

brew cask install dockertoolbox

运行Docker Quickstart Terminal.app

bash --login '/Applications/Docker/Docker Quickstart Terminal.app/Contents/Resources/Scripts/start.sh'

出现以下提示，说明Docker已经就绪

##         .
## ## ##        ==
## ## ## ## ##    ===
/"""""""""""""""""\___/ ===
~~~ {~~ ~~~~ ~~~ ~~~~ ~~~ ~ /  ===- ~~~
\______ o           __/
\    \         __/
\____\_______/

docker is configured to use the default machine with IP *.*.*.*
For help getting started, check out the docs at https://docs.docker.com

否则会提示

Cannot connect to the Docker daemon. Is the docker daemon running on this host?

动手制作PostgreSQL Docker镜像

编写Dockerfile

这里有介绍Dockerfile的最佳实践以及官方有详细的参考指南，请大家各自阅读。

翠花，上PG Dockerfile

$ cd ~;mkdir mypostgresql;cd mypostgresql
$ cat Dockerfile

FROM ubuntu:16.04

RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8

RUN echo "deb http://apt.postgresql.org/pub/repos/apt/ precise-pgdg main" > /etc/apt/sources.list.d/pgdg.list
RUN apt-get update && apt-get -y -q install python-software-properties software-properties-common \
&& apt-get -y -q install postgresql-9.4 postgresql-client-9.4 postgresql-contrib-9.4

USER postgres
RUN /etc/init.d/postgresql start \
&& psql --command "CREATE USER pger WITH SUPERUSER PASSWORD 'pger';" \
&& createdb -O pger pgerdb

USER root
RUN echo "host all  all    0.0.0.0/0  md5" >> /etc/postgresql/9.4/main/pg_hba.conf
RUN echo "listen_addresses='*'" >> /etc/postgresql/9.4/main/postgresql.conf

EXPOSE 5432

RUN mkdir -p /var/run/postgresql && chown -R postgres /var/run/postgresql
VOLUME  ["/etc/postgresql", "/var/log/postgresql", "/var/lib/postgresql"]

USER postgres
CMD ["/usr/lib/postgresql/9.4/bin/postgres", "-D", "/var/lib/postgresql/9.4/main", "-c", "config_file=/etc/postgresql/9.4/main/postgresql.conf"]

制作Docker镜像

docker build --rm=true -t mypostgresql:9.4 .

运行PostgreSQL On Docker

docker run -i -t -p 5432:5432 mypostgresql:9.4

测试

psql -h localhost -p 5432 -U pger -W pgerdb

结果显示如下，说明镜像制作成功了，细心的读者可能会发现里面已经多了一个名叫pgerdb的数据库

Password for user pger:
psql (9.4.2, server 9.4.5)
SSL connection (protocol: TLSv1.2, cipher: ECDHE-RSA-AES256-GCM-SHA384, bits: 256, compression: off)
Type "help" for help.

pgerdb=# \l
List of databases
Name    |  Owner   | Encoding  | Collate | Ctype |   Access privileges
-----------+----------+-----------+---------+-------+-----------------------
pgerdb    | pger     | SQL_ASCII | C       | C     |
postgres  | postgres | SQL_ASCII | C       | C     |
template0 | postgres | SQL_ASCII | C       | C     | =c/postgres          +
|          |           |         |       | postgres=CTc/postgres
template1 | postgres | SQL_ASCII | C       | C     | =c/postgres          +
|          |           |         |       | postgres=CTc/postgres
(4 rows)

pgerdb=#

搞定，以上就是今天要分享的PostgreSQL On Docker的话题，希望对大家有用，祝玩得开心～～