1实战案例——容器化部署基础服务
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1.1.1 案例目标
（1）了解Redis服务的容器化部署。
（2）了解ZooKeeper服务的容器化部署。
（3）了解Kafka服务的容器化部署。
1.1.2 案例分析
1.规划节点
节点规划，见表1-1-1。
表1-1-1节点规划
| IP | 主机名 | 节点 |
| 10.24.2.156 | master | Kubernetes master节点 |
| 10.24.2.157 | node | Kubernetes worker节点 |
2.基础准备
Kubernetes集群已部署完成，将提供的压缩包GPMall.tar.gz上传到master节点/root目录下并解压。
1.1.3 案例实施
1.Redis容器化部署
（1）编写Dockerfile
编写yum文件
[root@master ~]# cd gpmall/
[root@master gpmall]# cat local.repo
[gpmall]
name=gpmall
baseurl=file:///opt/gpmall
gpgcheck=0
enabled=1
编写Dockerfile文件：
[root@master gpmall]# cat Dockerfile-redis
FROM centos:centos7.5.1804
MAINTAINER Guo
# 配置yum源
ADD gpmall.tar /opt
RUN rm -rfv /etc/yum.repos.d/*
ADD local.repo /etc/yum.repos.d/
#安装Redis
RUN yum -y install redis
# 开放端口
EXPOSE 6379
#安装清理缓存文件
RUN yum clean all
#修改绑定IP地址
RUN sed -i -e 's@bind 127.0.0.1@bind 0.0.0.0@g' /etc/redis.conf
#关闭保护模式
RUN sed -i -e 's@protected-mode yes@protected-mode no@g' /etc/redis.conf
#启动
ENTRYPOINT [ "/usr/bin/redis-server","/etc/redis.conf"]
CMD []
（2）构建镜像
构建镜像gpmall-redis:v1.0：
[root@master gpmall]# docker build -t gpmall-redis:v1.0 -f Dockerfile-redis .
Sending build context to Docker daemon? 507.6MB
Step 1/12 : FROM centos:centos7.5.1804
?---> cf49811e3cdb
Step 2/12 : MAINTAINER Guo
?---> Using cache
?---> 02855371e6e9
Step 3/12 : ADD gpmall.tar /opt
?---> Using cache
?---> bb41486d722b
Step 4/12 : RUN rm -rfv /etc/yum.repos.d/*
?---> Using cache
?---> 310d88dd58d7
Step 5/12 : ADD local.repo /etc/yum.repos.d/
?---> Using cache
?---> ebd2db8d8bf6
Step 6/12 : RUN yum -y install redis
?---> Using cache
?---> bbb61e6529ad
Step 7/12 : EXPOSE 6379
?---> Using cache
?---> d4e578610926
Step 8/12 : RUN yum clean all
?---> Using cache
?---> 7d204f260c6a
Step 9/12 : RUN sed -i -e 's@bind 127.0.0.1@bind 0.0.0.0@g' /etc/redis.conf
?---> Using cache
?---> 6f495fddae91
Step 10/12 : RUN sed -i -e 's@protected-mode yes@protected-mode no@g' /etc/redis.conf
?---> Using cache
?---> bdc34d6845dd
Step 11/12 : ENTRYPOINT [ "/usr/bin/redis-server","/etc/redis.conf"]
?---> Using cache
?---> 8cccc88ad3ba
Step 12/12 : CMD []
?---> Using cache
?---> 0e71dea163a7
Successfully built 0e71dea163a7
Successfully tagged gpmall-redis:v1.0
查看镜像列表：
[root@master gpmall]# docker images
REPOSITORY??? ?TAG???? ???IMAGE ID????? ????CREATED??? ?????SIZE
gpmall-redis?????? v1.0??????? 0e71dea163a7??????? 2 minutes ago?????? 465MB
2.Mariadb容器化部署
（1）编写Dockerfile
编写数据库初始化脚本run.sh：
[root@master gpmall]# cat mysql_init.sh
#!/bin/bash
mysql_install_db --user=mysql
(mysqld_safe &) | grep a
sleep 3s
mysqladmin -u root password '123456'
sleep 3s
mysql -uroot -p123456 -e "GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456'"
sleep 3s
mysql -uroot -p123456 -e "create database gpmall;use gpmall;source /opt/gpmall.sql;"
sleep 3s
编写Dockerfile文件：
[root@master gpmall]# cat Dockerfile-mariadb
FROM centos:centos7.5.1804
MAINTAINER Chinaskill
# 配置yum源
ADD gpmall.tar /opt
RUN rm -rfv /etc/yum.repos.d/*
ADD local.repo /etc/yum.repos.d/
# 安装MariaDB
RUN yum install -y MariaDB-server expect net-tools
RUN yum clean all
COPY gpmall.sql /opt/
ADD mysql_init.sh /opt/
RUN chmod +x /opt/mysql_init.sh
RUN /opt/mysql_init.sh
ENV LC_ALL en_US.UTF-8
EXPOSE 3306
CMD ["mysqld_safe"]
（2）构建镜像
构建镜像：
[root@master gpmall]# docker build -t gpmall-mariadb:v1.0 -f Dockerfile-mariadb .
Sending build context to Docker daemon? 507.6MB
Step 1/14 : FROM centos:centos7.5.1804
?---> cf49811e3cdb
Step 2/14 : MAINTAINER Chinaskill
?---> Using cache
?---> 612224da592d
Step 3/14 : ADD gpmall.tar /opt
?---> Using cache
?---> 6d1ddf658c25
Step 4/14 : RUN rm -rfv /etc/yum.repos.d/*
?---> Using cache
?---> 6a228b86827e
Step 5/14 : ADD local.repo /etc/yum.repos.d/
?---> Using cache
?---> 68cd0048ecc7
Step 6/14 : RUN yum install -y MariaDB-server expect net-tools
?---> Using cache
?---> dbf601e719e3
Step 7/14 : RUN yum clean all
?---> Using cache
?---> 0508690b35f5
Step 8/14 : COPY gpmall.sql /opt/
?---> Using cache
?---> 617904a55aa2
Step 9/14 : ADD mysql_init.sh /opt/
?---> Using cache
?---> 80e1373d25f2
Step 10/14 : RUN chmod +x /opt/mysql_init.sh
?---> Using cache
?---> 3d970f66be13
Step 11/14 : RUN /opt/mysql_init.sh
?---> Using cache
?---> d47f24b255a8
Step 12/14 : ENV LC_ALL en_US.UTF-8
?---> Using cache
?---> 4b4b6dde5062
Step 13/14 : EXPOSE 3306
?---> Using cache
?---> 5f755d3f324f
Step 14/14 : CMD ["mysqld_safe"]
?---> Using cache
?---> 6c3bbd33bd7b
Successfully built 6c3bbd33bd7b
Successfully tagged gpmall-mariadb:v1.0
查看镜像列表：
# docker images
REPOSITORY????????? TAG???? ???IMAGE ID?? ?????CREATED????? ??SIZE
gpmall-mariadb??? ??????v1.0?? ?????6c3bbd33bd7b???? 28 seconds ago???? 1.06GB
3.ZooKeeper容器化部署
（1）编写Dockerfile
编写Dockerfile文件：
[root@master gpmall]# cat Dockerfile-zookeeper
FROM centos:centos7.5.1804
MAINTAINER Chinaskill
# 配置yum源
ADD gpmall.tar /opt
RUN rm -rfv /etc/yum.repos.d/*
ADD local.repo /etc/yum.repos.d/
# 安装JDK
RUN yum install -y java-1.8.0-openjdk java-1.8.0-openjdk-devel
ENV work_path /usr/local
WORKDIR $work_path
# 安装ZooKeeper
ADD zookeeper-3.4.14.tar.gz /usr/local
ENV ZOOKEEPER_HOME /usr/local/zookeeper-3.4.14
# PATH
ENV PATH $PATH:$JAVA_HOME/bin:$JRE_HOME/bin:$ZOOKEEPER_HOME/bin
RUN cp $ZOOKEEPER_HOME/conf/zoo_sample.cfg $ZOOKEEPER_HOME/conf/zoo.cfg
EXPOSE 2181
# 设置开机自启
CMD $ZOOKEEPER_HOME/bin/zkServer.sh start-foreground
（2）构建镜像
构建镜像gpmall-zookeeper:v1.0：
[root@master gpmall]# docker build -t gpmall-zookeeper:v1.0 -f Dockerfile-zookeeper .
Sending build context to Docker daemon? 507.6MB
Step 1/14 : FROM centos:centos7.5.1804
?---> cf49811e3cdb
Step 2/14 : MAINTAINER Chinaskill
?---> Using cache
?---> 612224da592d
Step 3/14 : ADD gpmall.tar /opt
?---> Using cache
?---> 6d1ddf658c25
Step 4/14 : RUN rm -rfv /etc/yum.repos.d/*
?---> Using cache
?---> 6a228b86827e
Step 5/14 : ADD local.repo /etc/yum.repos.d/
?---> Using cache
?---> 68cd0048ecc7
Step 6/14 : RUN yum install -y java-1.8.0-openjdk java-1.8.0-openjdk-devel
?---> Using cache
?---> 2fd39963721f
Step 7/14 : ENV work_path /usr/local
?---> Using cache
?---> 3fdc92bc1ed1
Step 8/14 : WORKDIR $work_path
?---> Using cache
?---> c072b5dab01f
Step 9/14 : ADD zookeeper-3.4.14.tar.gz /usr/local
?---> Using cache
?---> 41eac879569f
Step 10/14 : ENV ZOOKEEPER_HOME /usr/local/zookeeper-3.4.14
?---> Using cache
?---> 3d875f5082d4
Step 11/14 : ENV PATH $PATH:$JAVA_HOME/bin:$JRE_HOME/bin:$ZOOKEEPER_HOME/bin
?---> Using cache
?---> 7875d2c65d28
Step 12/14 : RUN cp $ZOOKEEPER_HOME/conf/zoo_sample.cfg $ZOOKEEPER_HOME/conf/zoo.cfg
?---> Using cache
?---> d0c5f717cd0b
Step 13/14 : EXPOSE 2181
?---> Using cache
?---> c74c0223d17e
Step 14/14 : CMD $ZOOKEEPER_HOME/bin/zkServer.sh start-foreground
?---> Using cache
?---> df75e640384d
Successfully built df75e640384d
Successfully tagged gpmall-zookeeper:v1.0