Docker系列（二十四）——Docker实例六Docker安装Redis实例

蔚落 2022-04-12 12:41 305阅读 0赞

###                                    《 Docker实例三Docker安装Redis实例 》 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hlbGxvX1dvcmxkX1FXUA_size_16_color_FFFFFF_t_70][]

> ### 前言 ###

在前面一篇文章种，完成了 《 [Docker安装MongoDB实例][Docker_MongoDB] 》，本篇将继续镜像安装教程，并完成Docker安装Redis实例。

> ### Docker实例三Docker安装Redis实例 ###

**第一种：使用 docker pull 镜像名 拉取镜像**

1、查询星级数大于30的MySQL镜像（注：星级数越高，越受欢迎的，默认在 Docker Hub 查询的），

输入命令 “ docker search -s 30 redis ” ，查询内容如下：

[root@localhost ~]# docker search -s 30 redis
    Flag --stars has been deprecated, use --filter=stars=3 instead
    NAME                    DESCRIPTION                                     STARS               OFFICIAL            AUTOMATED
    redis                   Redis is an open source key-value store that…   6222                [OK]                
    bitnami/redis           Bitnami Redis Docker Image                      99                                      [OK]
    sameersbn/redis                                                         75                                      [OK]
    grokzen/redis-cluster   Redis cluster 3.0, 3.2, 4.0 & 5.0               39                                      
    hypriot/rpi-redis       Raspberry Pi compatible redis image             34

2、拉取第一个镜像，也是官方版的镜像，输入命令 “ docker pull redis ”，默认拉取的为最新版本 latest ，内容如下：

[root@localhost ~]# docker pull redis
    Using default tag: latest
    latest: Pulling from library/redis
    f17d81b4b692: Pull complete 
    b32474098757: Pull complete 
    8980cabe8bc2: Pull complete 
    e614c66c2b9c: Pull complete 
    6eb43ec9256b: Pull complete 
    394ecf5f46d4: Pull complete 
    Digest: sha256:f30f134bd475d451ce3207fb128bcef8ff87d0f520a39cac0c4ea285819c42a9
    Status: Downloaded newer image for redis:latest

3、拉取完成后，输入命令 “ docker images redis ”，可以在本地镜像列表里查到REPOSITORY为redis的镜像，内容如下：

[root@localhost ~]# docker images redis
    REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
    redis               latest              415381a6cb81        3 weeks ago         94.9MB

**第二种：通过 Dockerfile 构建Docker镜像**

1、新建Redis的Dockerfile文件存放目录，输入命令 “ mkdir -p /opt/dockerfile/redis ” ，并进入到目录下。

[root@localhost ~]# mkdir -p /opt/dockerfile/redis
    [root@localhost ~]# cd /opt/dockerfile/redis/
    [root@localhost redis]#

2、创建dockerfile文件，输入命令 “ vi redisdockerfile ” ，并键入如下内容：

**Ubuntu 版本：**

# base 基础镜像
    FROM debian:stretch-slim
    
    # 首先添加用户和组，以确保一致地分配他们的id
    RUN groupadd -r redis && useradd -r -g redis redis
    
    # grab gosu for easy step-down from root
    # https://github.com/tianon/gosu/releases
    ENV GOSU_VERSION 1.10
    RUN set -ex; \
    	\
    	fetchDeps=" \
    		ca-certificates \
    		dirmngr \
    		gnupg \
    		wget \
    	"; \
    	apt-get update; \
    	apt-get install -y --no-install-recommends $fetchDeps; \
    	rm -rf /var/lib/apt/lists/*; \
    	\
    	dpkgArch="$(dpkg --print-architecture | awk -F- '{ print $NF }')"; \
    	wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch"; \
    	wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch.asc"; \
    	export GNUPGHOME="$(mktemp -d)"; \
    	gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4; \
    	gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu; \
    	gpgconf --kill all; \
    	rm -r "$GNUPGHOME" /usr/local/bin/gosu.asc; \
    	chmod +x /usr/local/bin/gosu; \
    	gosu nobody true; \
    	\
    	apt-get purge -y --auto-remove $fetchDeps
    
    ENV REDIS_VERSION 5.0.2
    ENV REDIS_DOWNLOAD_URL http://download.redis.io/releases/redis-5.0.2.tar.gz
    ENV REDIS_DOWNLOAD_SHA 937dde6164001c083e87316aa20dad2f8542af089dfcb1cbb64f9c8300cd00ed
    
    # for redis-sentinel see: http://redis.io/topics/sentinel
    RUN set -ex; \
    	\
    	buildDeps=' \
    		ca-certificates \
    		wget \
    		\
    		gcc \
    		libc6-dev \
    		make \
    	'; \
    	apt-get update; \
    	apt-get install -y $buildDeps --no-install-recommends; \
    	rm -rf /var/lib/apt/lists/*; \
    	\
    	wget -O redis.tar.gz "$REDIS_DOWNLOAD_URL"; \
    	echo "$REDIS_DOWNLOAD_SHA *redis.tar.gz" | sha256sum -c -; \
    	mkdir -p /usr/src/redis; \
    	tar -xzf redis.tar.gz -C /usr/src/redis --strip-components=1; \
    	rm redis.tar.gz; \
    	\
    # 禁用 Redis 保护模式 [1]，因为它在 Docker 上下文中是不必要的
    # (ports are not automatically exposed when running inside Docker, but rather explicitly by specifying -p / -P)
    # [1]: https://github.com/antirez/redis/commit/edd4d555df57dc84265fdfb4ef59a4678832f6da
    	grep -q '^#define CONFIG_DEFAULT_PROTECTED_MODE 1$' /usr/src/redis/src/server.h; \
    	sed -ri 's!^(#define CONFIG_DEFAULT_PROTECTED_MODE) 1$!\1 0!' /usr/src/redis/src/server.h; \
    	grep -q '^#define CONFIG_DEFAULT_PROTECTED_MODE 0$' /usr/src/redis/src/server.h; \
    # 为了将来的参考，直接在源代码中修改它，而不只是提供默认的配置标志，因为很明显 “ 如果您指定 redis-server 的任何参数，将指定所有参数 ”
    # see also https://github.com/docker-library/redis/issues/4#issuecomment-50780840
    # (more exactly, this makes sure the default behavior of "save on SIGTERM" stays functional by default)
    	\
    	make -C /usr/src/redis -j "$(nproc)"; \
    	make -C /usr/src/redis install; \
    	\
    	rm -r /usr/src/redis; \
    	\
    	apt-get purge -y --auto-remove $buildDeps
    
    # 创建数据存放的容器数据卷
    RUN mkdir /data && chown redis:redis /data
    VOLUME /data
    WORKDIR /data
    
    COPY docker-entrypoint.sh /usr/local/bin/
    ENTRYPOINT ["docker-entrypoint.sh"]
    
    # 暴露 redis 服务端口
    EXPOSE 6379
    CMD ["redis-server"]

**Linux 版本：**

FROM alpine:3.9
    
    # add our user and group first to make sure their IDs get assigned consistently, regardless of whatever dependencies get added
    RUN addgroup -S redis && adduser -S -G redis redis
    
    RUN apk add --no-cache \
    # grab su-exec for easy step-down from root
    		'su-exec>=0.2' \
    # add tzdata for https://github.com/docker-library/redis/issues/138
    		tzdata
    
    ENV REDIS_VERSION 5.0.4
    ENV REDIS_DOWNLOAD_URL http://download.redis.io/releases/redis-5.0.4.tar.gz
    ENV REDIS_DOWNLOAD_SHA 3ce9ceff5a23f60913e1573f6dfcd4aa53b42d4a2789e28fa53ec2bd28c987dd
    
    # for redis-sentinel see: http://redis.io/topics/sentinel
    RUN set -ex; \
    	\
    	apk add --no-cache --virtual .build-deps \
    		coreutils \
    		gcc \
    		linux-headers \
    		make \
    		musl-dev \
    	; \
    	\
    	wget -O redis.tar.gz "$REDIS_DOWNLOAD_URL"; \
    	echo "$REDIS_DOWNLOAD_SHA *redis.tar.gz" | sha256sum -c -; \
    	mkdir -p /usr/src/redis; \
    	tar -xzf redis.tar.gz -C /usr/src/redis --strip-components=1; \
    	rm redis.tar.gz; \
    	\
    # disable Redis protected mode [1] as it is unnecessary in context of Docker
    # (ports are not automatically exposed when running inside Docker, but rather explicitly by specifying -p / -P)
    # [1]: https://github.com/antirez/redis/commit/edd4d555df57dc84265fdfb4ef59a4678832f6da
    	grep -q '^#define CONFIG_DEFAULT_PROTECTED_MODE 1$' /usr/src/redis/src/server.h; \
    	sed -ri 's!^(#define CONFIG_DEFAULT_PROTECTED_MODE) 1$!\1 0!' /usr/src/redis/src/server.h; \
    	grep -q '^#define CONFIG_DEFAULT_PROTECTED_MODE 0$' /usr/src/redis/src/server.h; \
    # for future reference, we modify this directly in the source instead of just supplying a default configuration flag because apparently "if you specify any argument to redis-server, [it assumes] you are going to specify everything"
    # see also https://github.com/docker-library/redis/issues/4#issuecomment-50780840
    # (more exactly, this makes sure the default behavior of "save on SIGTERM" stays functional by default)
    	\
    	make -C /usr/src/redis -j "$(nproc)"; \
    	make -C /usr/src/redis install; \
    	\
    	rm -r /usr/src/redis; \
    	\
    	runDeps="$( \
    		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
    			| tr ',' '\n' \
    			| sort -u \
    			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
    	)"; \
    	apk add --virtual .redis-rundeps $runDeps; \
    	apk del .build-deps; \
    	\
    	redis-server --version
    
    RUN mkdir /data && chown redis:redis /data
    VOLUME /data
    WORKDIR /data
    
    COPY docker-entrypoint.sh /usr/local/bin/
    ENTRYPOINT ["docker-entrypoint.sh"]
    
    EXPOSE 6379
    CMD ["redis-server"]

3、通过 Dockerfile 的 docker build 构建一个 redis 镜像，这儿可以自定义镜像名，输入命令 “ docker build -f /opt/dockerfile/redis/redisdockerfile -t huazai/db/redis:v1.0 . ” 进行构建，部分构建内容如下：

[root@localhost redis]# docker build -f /opt/dockerfile/redis/redisdockerfile -t huazai/db/redis:v1.0 .
    Sending build context to Docker daemon  6.144kB
    Step 1/15 : FROM debian:stretch-slim
    stretch-slim: Pulling from library/debian
    f17d81b4b692: Pull complete 
    Digest: sha256:ef6be890318a105f7401d0504c01c2888daa5d9e45b308cf0e45c7cb8e44634f
    Status: Downloaded newer image for debian:stretch-slim
     ---> 4b4471f624dc
    Step 2/15 : RUN groupadd -r redis && useradd -r -g redis redis
     ---> Running in b2c0601c9e6f
    Removing intermediate container b2c0601c9e6f
    
    
    # 此处省去 N 行
    
     ---> Running in 37332491a495
    Removing intermediate container 37332491a495
     ---> ea2774c00271
    Step 14/15 : EXPOSE 6379
     ---> Running in 0305b1c012b2
    Removing intermediate container 0305b1c012b2
     ---> 1af762f295c0
    Step 15/15 : CMD ["redis-server"]
     ---> Running in 76d467c25d6e
    Removing intermediate container 76d467c25d6e
     ---> 845712c3bd26
    Successfully built 845712c3bd26
    Successfully tagged huazai/db/redis:v1.0

构建成功后，输入命令 “ docker images huazai/db/redis  ” ，可以在本地的镜像列表种查找到方才构建 redis 镜像，内容如下：

[root@localhost redis]# docker images huazai/db/redis
    REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
    huazai/db/redis     v1.0                f8ea30f3fbef        7 minutes ago       94.9MB

--------------------

> ### 测试 Redis 镜像 ###

1、创建 Redis 相关目录，后面用于数据转递与共享的容器数据卷，

输入命令 “ mkdir -p /opt/redis/data /opt/redis/conf ” ，内容如下：

[root@localhost ~]# mkdir -p /opt/redis/data
    [root@localhost ~]# cd /opt/redis/
    [root@localhost redis]# ll
    total 0
    drwxr-xr-x. 2 root root 6 Dec  6 21:14 data

目录说明：

<table> 
 <tbody> 
  <tr> 
   <td> <p>&nbsp;</p> <p>data&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</p> </td> 
   <td>启动redis容器服务时，data目录将映射为redis容器配置的 /data/db 的目录,以达到数据转递共享与数据存储的目的；</td> 
  </tr> 
 </tbody> 
</table>

2、启动镜像，创建一个容器实例，输入命令 “ docker run -it -d -p 6379:6379 --name redis01 -v /opt/redis/data:/data --privileged=true 镜像ID redis-server --appendonly yes ” ，启动后会产生一个 ID ，内容如下：

[root@localhost ~]# docker run -it -d -p 6379:6379 --name redis01 -v /opt/redis/data:/data --privileged=true f8ea30f3fbef redis-server --appendonly yes
    0f5bb017d55cb0e411cfccaaed38db8c0b0f8a2667c99f436ff38ba48b61ced7
    [root@localhost ~]#

3、连接 redis 服务并操作，这儿只为测试通过 Dockerfile 构建的 redis 服务是否可用，如果需要具体的关于 redis NoSQL方面的操作，请参考博主其它有关的详细描述，这儿就直接输入命令 “ docker exec -it redis01 /bin/bash ” ，再连接到 redis 服务，输入命令 “ redis-cli ”，连接上后，就可以对 redis 服务进行操作了，内容如下：

[root@localhost ~]# docker exec -it redis01 /bin/bash
    root@0f5bb017d55c:/data# redis-cli
    127.0.0.1:6379> set name huazai
    OK
    127.0.0.1:6379> get name
    "huazai"
    127.0.0.1:6379> keys *
    1) "name"
    127.0.0.1:6379>

--------------------

好了，关于 Docker系列（二十四）——Docker实例六Docker安装Redis实例 就写到这儿了，如果还有什么疑问或遇到什么问题欢迎扫码提问，也可以给我留言哦，我会一一详细的解答的。   
歇后语：“ 共同学习，共同进步 ”，也希望大家多多关注CSND的IT社区。

--------------------

<table> 
 <tbody> 
  <tr> 
   <td>作&nbsp; &nbsp; &nbsp; &nbsp;者：</td> 
   <td>华 &nbsp; &nbsp;仔</td> 
  </tr> 
  <tr> 
   <td>联系作者：</td> 
   <td>who.seek.me@java98k.vip</td> 
  </tr> 
  <tr> 
   <td>来&nbsp; &nbsp; &nbsp; &nbsp; 源：</td> 
   <td>CSDN (Chinese Software Developer Network)</td> 
  </tr> 
  <tr> 
   <td>原&nbsp; &nbsp; &nbsp; &nbsp; 文：</td> 
   <td><a href="https://blog.csdn.net/Hello_World_QWP/article/details/84764521" rel="nofollow">https://blog.csdn.net/Hello_World_QWP/article/details/84764521</a></td> 
  </tr> 
  <tr> 
   <td>版权声明：</td> 
   <td>本文为博主原创文章，请在转载时务必注明博文出处！</td> 
  </tr> 
 </tbody> 
</table>

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hlbGxvX1dvcmxkX1FXUA_size_16_color_FFFFFF_t_70]: /images/20220412/9eaf1b60363c4f25aa648f64ad400af6.png
[Docker_MongoDB]: https://blog.csdn.net/Hello_World_QWP/article/details/84764328