Docker+Kubernetes(k8s)微服务容器化实践课程笔记

一时失言乱红尘 2022-12-04 09:28 166阅读 0赞

# Docker+Kubernetes(k8s)微服务容器化实践 #

Docker+Kubernetes(k8s)微服务容器化实践课程连接：https://coding.imooc.com/learn/list/198.html

# 第1章 初识微服务 #

## 1-1 微服务-导学 ##

**容器技术的成熟为微服务的落地提供了基础，轻量化的容器是微服务运行的最佳环境。  
微服务只有在容器(Docker)环境下，再结合有效服务编排框架(K8s)，才能使持续集成快速交付变成可能。**  
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课程内容  
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1.  开发： 业务场景架构图

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1.  部署：  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 8]
2.  服务编排：  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 9]  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 10]

自动化持续集成和部署

从代码提价到服务部署自动化  
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1-2 软件架构的进化 (11:40)

## 1-3 什么是微服务 ##

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## 1-4 画出微服务架构图 ##

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## 1-5 微服务架构的优势和不足 ##

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## 第2章 微服务带来的问题及解决方案分析 ##

2-1 微服务架构带来的问题

## 2-2 微服务间如何通讯 ##

通信模式：  
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## 2-3 服务发现、部署更新和扩容 ##

### 1. 服务发现： ###

**我们的服务对外表现的形式一般是ip+端口号，服务发现的本质就是让服务调用者/客户端如何知道服务提供的ip和端口号**

**一般单体服务发现（Eginx）**  
**但不是自动的发现，nginx转发ip和端口需要手动配置**  
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**微服务中的服务发现**

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 28]

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### 2. 服务部署 ###

单体项目部署  
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微服务部署  
服务编排

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 31]

![在这里插入图片描述][20200907230026470.png_pic_center]

## 2-4 springboot&springcloud（上） ##

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2-5 springboot&springcloud（下） (12:17)

## 第3章 微服务开发 ##

## 3-1 微服务业务分析 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 38]

3-2 Thirft安装和验证 (08:20)  
3-3 Python开发信息服务 (24:28)  
3-4 开发用户服务（上） (15:21)

## 3-5 开发用户服务（下） ##

mapper接口

package com.imooc.user.mapper;
    
    import com.imooc.thrift.user.UserInfo;
    import org.apache.ibatis.annotations.Insert;
    import org.apache.ibatis.annotations.Mapper;
    import org.apache.ibatis.annotations.Param;
    import org.apache.ibatis.annotations.Select;
    
    /** * Created by Michael on 2017/10/28. */
    @Mapper
    public interface UserMapper { 
    
        @Select("select id,username, password, real_name as realName," +
                "mobile, email from pe_user where id=#{id}")
        UserInfo getUserById(@Param("id")int id);
    
    
        @Select("select id,username, password, real_name as realName," +
                "mobile, email from pe_user where username=#{username}")
        UserInfo getUserByName(@Param("username")String username);
    
    
        @Insert("insert into pe_user (username, password, real_name, mobile, email)" +
                "values (#{u.username}, #{u.password}, #{u.realName}, #{u.mobile}, #{u.email})")
        void registerUser(@Param("u") UserInfo userInfo);
    
    
        @Select("select u.id,u.username,u.password,u.real_name as realName," +
                "u.mobile,u.email,t.intro,t.stars from pe_user u," +
                "pe_teacher t where u.id=#{id} " +
                "and u.id=t.user_id")
        UserInfo getTeacherById(@Param("id")int id);
    }

Services使用

package com.imooc.user.service;
    
    import com.imooc.thrift.user.UserInfo;
    import com.imooc.thrift.user.UserService;
    import com.imooc.user.mapper.UserMapper;
    import org.apache.thrift.TException;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    /** * Created by Michael on 2017/10/28. */
    @Service
    public class UserSerivceImpl implements UserService.Iface { 
    
    
        @Autowired
        private UserMapper userMapper;
    
        @Override
        public UserInfo getUserById(int id) throws TException { 
    
            return userMapper.getUserById(id);
        }
    
        @Override
        public UserInfo getTeacherById(int id) throws TException { 
            return userMapper.getTeacherById(id);
        }
    
        @Override
        public UserInfo getUserByName(String username) throws TException { 
            return userMapper.getUserByName(username);
        }
    
        @Override
        public void regiserUser(UserInfo userInfo) throws TException { 
            userMapper.registerUser(userInfo);
        }
    }

## 3-6 开发用户EdgeService\_A ##

![在这里插入图片描述][20200912161304306.png_pic_center]  
使用Docker启动Redis  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 39]

SpringBoot 整合Redis

<dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-data-redis</artifactId>
            </dependency>

package com.imooc.user.redis;
    
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.cache.CacheManager;
    import org.springframework.cache.annotation.CachingConfigurerSupport;
    import org.springframework.cache.annotation.EnableCaching;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.data.redis.cache.RedisCacheManager;
    import org.springframework.data.redis.connection.RedisConnectionFactory;
    import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
    import org.springframework.data.redis.core.RedisTemplate;
    import org.springframework.data.redis.core.StringRedisTemplate;
    import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
    
    import com.fasterxml.jackson.annotation.JsonAutoDetect;
    import com.fasterxml.jackson.annotation.PropertyAccessor;
    import com.fasterxml.jackson.databind.ObjectMapper;
    
    
    /** * Redis缓存配置类 */
    @Configuration
    @EnableCaching
    public class RedisConfig extends CachingConfigurerSupport { 
    
        @Value("${spring.redis.host}")
        private String host;
        @Value("${spring.redis.port}")
        private int port;
        @Value("${spring.redis.timeout}")
        private int timeout;
    
        //缓存管理器
        @Bean
        public CacheManager cacheManager(RedisTemplate redisTemplate) { 
            RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);
            //设置缓存过期时间
            cacheManager.setDefaultExpiration(10000);
            return cacheManager;
        }
    
        @Bean
        public JedisConnectionFactory redisConnectionFactory() { 
            JedisConnectionFactory factory = new JedisConnectionFactory();
            factory.setHostName(host);
            factory.setPort(port);
            factory.setTimeout(timeout);
            return factory;
        }
    
        @Bean
        public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory){ 
            StringRedisTemplate template = new StringRedisTemplate(factory);
            setSerializer(template);//设置序列化工具
            template.afterPropertiesSet();
            return template;
        }
    
        private void setSerializer(StringRedisTemplate template){ 
            Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
            ObjectMapper om = new ObjectMapper();
            om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
            om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
            jackson2JsonRedisSerializer.setObjectMapper(om);
            template.setValueSerializer(jackson2JsonRedisSerializer);
        }
    }

package com.imooc.user.redis;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.data.redis.core.RedisTemplate;
    import org.springframework.stereotype.Component;
    
    import java.util.concurrent.TimeUnit;
    
    /** * Created by Michael on 2017/10/30. */
    @Component
    public class RedisClient { 
    
        @Autowired
        private RedisTemplate redisTemplate;
    
        public <T> T get(String key) { 
            return (T)redisTemplate.opsForValue().get(key);
        }
    
        public void set(String key, Object value) { 
            redisTemplate.opsForValue().set(key, value);
        }
    
        public void set(String key, Object value, int timeout) { 
            redisTemplate.opsForValue().set(key, value, timeout, TimeUnit.SECONDS);
        }
    
        public void expire(String key, int timeout) { 
            redisTemplate.expire(key, timeout, TimeUnit.SECONDS);
        }
    
    }

//2. 生成token
            String token = genToken();
    
            //3. 缓存用户
            redisClient.set(token, toDTO(userInfo), 3600);
    
            return new LoginResponse(token);

@RequestMapping(value="/authentication", method = RequestMethod.POST)
        @ResponseBody
        public UserDTO authentication(@RequestHeader("token") String token) { 
    
            return redisClient.get(token);
        }

3-7 开发用户EdgeService\_B (28:54)  
3-8 开发用户EdgeService\_C (25:24)  
3-9 开发用户EdgeService\_D (12:53)  
3-10 dubbo入门操练(上) (13:45)  
3-11 dubbo入门操练(下) (13:48)  
3-12 开发课程服务 (28:31)  
3-13 开发课程EdgeService (21:11)  
3-14 APIGatewayZuul (14:56)

# 第4章 服务编排前奏 #

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## 4-1 服务docker化（上) ##

[Docker官网][Docker]

去Docker官网下载一个基础的java镜像  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 41]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 42]  
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FROM openjdk:7-jre
    MAINTAINER xxx xxx@imooc.com
    
    COPY target/user-thrift-service-1.0-SNAPSHOT.jar /user-thrift-service.jar
    
    ENTRYPOINT [ "java", "-jar", "/user-thrift-service.jar" ]

![在这里插入图片描述][20200912174411744.png_pic_center]

4-2 服务docker化（下） (20:30)

## 4-3 docker下的服务通讯（上） ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 48]

docker-compose.yml

version: '3'
    
    services:
      message-service:
        image: message-service:latest
    
      user-service:
        image: user-service:latest
        command:
        - "--mysql.address=192.168.1.8"
    
      user-edge-service:
        image: user-edge-service:latest
        links:
        - user-service
        - message-service
        command:
        - "--redis.address=192.168.1.8"
    
      course-service:
        image: course-service:latest
        links:
        - user-service
        command:
        - "--mysql.address=192.168.1.8"
        - "--zookeeper.address=192.168.1.8"
    
      course-edge-service:
        image: course-edge-service:latest
        links:
        - user-edge-service
        command:
        - "--zookeeper.address=192.168.1.8"
    
      api-gateway-zuul:
        image: api-gateway-zuul:latest
        links:
        - user-edge-service
        - course-edge-service
        ports:
        - 8080:8080

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 49]

4-4 docker下的服务通讯（下） (11:24)  
4-5 镜像仓库 (23:44)  
4-6 三大平台扬帆起航 (02:49)  
第5章 服务编排-Mesos  
5-1 了解Mesos (17:45)  
5-2 画出Mesos集群架构图 (07:04)  
5-3 集群环境搭建\_A (16:20)  
5-4 集群环境搭建\_B (14:58)  
5-5 集群环境搭建\_C (13:27)  
5-6 调整微服务适应Mesos (11:55)  
5-7 微服务部署\_A (11:41)  
5-8 微服务部署\_B (15:52)  
5-9 微服务部署\_C (15:17)  
第6章 服务编排-DockerSwarm  
6-1 了解Swarm (16:41)  
6-2 集群环境搭建（上） (18:18)  
6-3 集群环境搭建（下） (17:46)  
6-4 调整微服务及服务配置 (16:36)  
6-5 微服务部署 (25:30)

# 第7章 服务编排-Kubernetes #

## 7-1 了解kubernetes（上） ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 50]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 51]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 52]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 53]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 54]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 55]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 56]

## 7-2 了解kubernetes（下） ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 57]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 58]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 59]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 60]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 61]

## 7-3 环境搭建前奏 ##

[GItHub: kubernetes入门，包括kubernetes概念，架构设计，集群环境搭建，认证授权等。][GItHub_ kubernetes_kubernetes]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 62]  
![在这里插入图片描述][20200913123819756.png_pic_center]

7-4 预先准备环境 (15:08)  
7-5 基础集群部署（上） (12:58)  
7-6 基础集群部署（下） (16:05)  
7-7 小试牛刀 (27:22)  
7-8 kube-proxy和kube-dns (21:17)  
7-9 理解认证、授权 (13:22)  
7-10 为集群添加认证授权（上） (13:58)  
7-11 为集群添加认证授权（下） (26:53)  
7-12 再试牛刀 (11:41)  
7-13 部署我们的微服务 (23:42)

# 第8章 CICD和DevOps #

## 8-1 了解CICD和DevOps ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 63]

DevOps是CICD的延申，CICD是DevOps的基础核心， DevOps是CICD的落地实现  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 66]

CI(持续集成) 目前比较流行的持续集成工具： Jenkins  
![在这里插入图片描述][20200914191805318.png_pic_center]

持续集体的CICD的具体步骤：

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 67]

8-2 准备GitLab和Jenkins (18:09)  
8-3 CICD实践（上） (18:42)  
8-4 CICD实践（下） (19:56)  
第9章 课程总结  
9-1 -课程总结 (05:10)

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[20200912161304306.png_pic_center]: /images/20221123/ff31f29e74c64a01891b27a7c741a6ae.png
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[Docker]: https://hub.docker.com/
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[GItHub_ kubernetes_kubernetes]: https://github.com/liuyi01/kubernetes-starter
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