【云原生-Docker】Docker 安装 MySQL

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通过 Dockerfile 构建

• 创建Dockerfile
• 创建目录mysql，用于存放后面的相关东西

mkdir -p ~/mysql/data ~/mysql/logs ~/mysql/conf

- data目录将映射为mysql容器配置的数据文件存放路径
- logs目录将映射为mysql容器的日志目录
- conf目录里的配置文件将映射为mysql容器的配置文件

• 进入创建的mysql目录，创建Dockerfile

FROM debian:jessie# add our user and group first to make sure their IDs get assigned consistently, regardless of whatever dependencies get addedRUN groupadd -r mysql && useradd -r -g mysql mysql# add gosu for easy step-down from rootENV GOSU_VERSION 1.7RUN 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

RUN mkdir /docker-entrypoint-initdb.d

# FATAL ERROR: please install the following Perl modules before executing /usr/local/mysql/scripts/mysql_install_db:
# File::Basename
# File::Copy
# Sys::Hostname
# Data::Dumper
RUN apt-get update && apt-get install -y perl pwgen --no-install-recommends && rm -rf /var/lib/apt/lists/*

# gpg: key 5072E1F5: public key "MySQL Release Engineering " imported
RUN apt-key adv --keyserver ha.pool.sks-keyservers.net --recv-keys A4A9406876FCBD3C456770C88C718D3B5072E1F5

ENV MYSQL_MAJOR 5.6
ENV MYSQL_VERSION 5.6.31-1debian8

RUN echo "deb http://repo.mysql.com/apt/debian/ jessie mysql-${MYSQL_MAJOR}" > /etc/apt/sources.list.d/mysql.list

# the "/var/lib/mysql" stuff here is because the mysql-server postinst doesn't have an explicit way to disable the mysql_install_db codepath besides having a database already "configured" (ie, stuff in /var/lib/mysql/mysql)
# also, we set debconf keys to make APT a little quieter
RUN { \
		echo mysql-community-server mysql-community-server/data-dir select ''; \
		echo mysql-community-server mysql-community-server/root-pass password ''; \
		echo mysql-community-server mysql-community-server/re-root-pass password ''; \
		echo mysql-community-server mysql-community-server/remove-test-db select false; \
	} | debconf-set-selections \
	&& apt-get update && apt-get install -y mysql-server="${MYSQL_VERSION}" && rm -rf /var/lib/apt/lists/* \
	&& rm -rf /var/lib/mysql && mkdir -p /var/lib/mysql /var/run/mysqld \
	&& chown -R mysql:mysql /var/lib/mysql /var/run/mysqld \
# ensure that /var/run/mysqld (used for socket and lock files) is writable regardless of the UID our mysqld instance ends up having at runtime
	&& chmod 777 /var/run/mysqld

# comment out a few problematic configuration values
# don't reverse lookup hostnames, they are usually another container
RUN sed -Ei 's/^(bind-address|log)/#&/' /etc/mysql/my.cnf \
	&& echo 'skip-host-cache\nskip-name-resolve' | awk '{ print } $1 == "[mysqld]" && c == 0 { c = 1; system("cat") }' /etc/mysql/my.cnf > /tmp/my.cnf \
	&& mv /tmp/my.cnf /etc/mysql/my.cnf

VOLUME /var/lib/mysql

COPY docker-entrypoint.sh /usr/local/bin/
RUN ln -s usr/local/bin/docker-entrypoint.sh /entrypoint.sh # backwards compat
ENTRYPOINT ["docker-entrypoint.sh"]

EXPOSE 3306
CMD ["mysqld"]

• 通过Dockerfile创建一个镜像，替换成自己的名字

docker build -t mysql .

• 创建完成后，可在本地镜像列表中查找到刚刚创建的镜像

docker images | grep mysql

docker pull mysql

• 查找Docker Hub上的mysql镜像

docker search mysql

• 拉取官方的镜像，标签为5.6

docker pull mysql:5.6

• 等待下载完成后就可以在本地镜像列表里查到REPOSITORY为mysql,标签为5.6的镜像。

使用mysql镜像

• 运行容器

docker run -p 3306:3306 --name mymysql -v $PWD/conf/my.cnf:/etc/mysql/my.cnf -v $PWD/logs:/logs -v $PWD/data:/mysql_data -e MYSQL_ROOT_PASSWORD=123456 -d 

• 命令说明：
  • -p 3306:3306：将容器的3306端口映射到主机的3306端口
  • -v $PWD/conf/my.cnf:/etc/mysql/my.cnf：将主机当前目录下的conf/my.cnf挂载到容器的/etc/mysql/my.cnf
  • -v $PWD/logs:/logs：将主机当前目录下的logs目录挂载到容器的/logs
  • -v $PWD/data:/mysql_data：将主机当前目录下的data目录挂载到容器的/mysql_data
  • -e MYSQL_ROOT_PASSWORD=123456：初始化root用户的密码
• 查看容器启动情况

docker ps

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