Docker 入门使用 （二）

配置国内的源

>  /etc/docker/daemon.json

{
 "registry-mirrors" : [
   "https://mirror.ccs.tencentyun.com",
   "http://registry.docker-cn.com",
   "http://docker.mirrors.ustc.edu.cn",
   "http://hub-mirror.c.163.com"
 ],
 "insecure-registries" : [
   "registry.docker-cn.com",
   "docker.mirrors.ustc.edu.cn"
 ],
 "debug" : true,
 "experimental" : true
}

重启docker使配置生效

systemctl restart docker

登陆docker仓库  https://hub.docker.com

搜索redis

选择4.0版本

下载Redis测试

[root@test4 doc]# docker pull redis:4.0
4.0: Pulling from library/redis
54fec2fa59d0: Pull complete 
9c94e11103d9: Pull complete 
04ab1bfc453f: Pull complete 
7988789e1fb7: Pull complete 
8ce1bab2086c: Pull complete 
40e134f79af1: Pull complete 
Digest: sha256:2e03fdd159f4a08d2165ca1c92adde438ae4e3e6b0f74322ce013a78ee81c88d
Status: Downloaded newer image for redis:4.0
docker.io/library/redis:4.0

查看镜像列表

[root@test4 doc]# docker image ls
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
redis               4.0                 191c4017dcdd        3 months ago        89.3MB

删除镜像

方法1

docker image rm  镜像名:版本号

[root@test4 doc]# docker image ls
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
redis               4.0                 191c4017dcdd        3 months ago        89.3MB
[root@test4 doc]# docker image rm redis:4.0
Untagged: redis:4.0
Untagged: redis@sha256:2e03fdd159f4a08d2165ca1c92adde438ae4e3e6b0f74322ce013a78ee81c88d
Deleted: sha256:191c4017dcdd3370f871a4c6e7e1d55c7d9abed2bebf3005fb3e7d12161262b8
Deleted: sha256:c608627e4978ced00e2f061ae0386fab2e374376b96512bbbd2eea112b1c18ec
Deleted: sha256:3fb5c9513585182e703038a67d9aaac987d4be30b6d3ece92ffe35734b330500
Deleted: sha256:e3a7fbb7bf3b4de87e6765498bf952b114f9bf297e5e93f51bd6a9a32083f8e4
Deleted: sha256:09f9b5d7722b181ae2acd61396c20549afdea66ee31f921850191db5afe6738a
Deleted: sha256:3bd2921d0d3dd52dbcdc462f35b11cb89df901205284b0fea03c19bb8359907a
Deleted: sha256:c2adabaecedbda0af72b153c6499a0555f3a769d52370469d8f6bd6328af9b13

方法2

[root@test4 doc]# docker image ls
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
redis               4.0                 191c4017dcdd        3 months ago        89.3MB
[root@test4 doc]# docker rmi 191c4017dcdd
Untagged: redis:4.0
Untagged: redis@sha256:2e03fdd159f4a08d2165ca1c92adde438ae4e3e6b0f74322ce013a78ee81c88d
Deleted: sha256:191c4017dcdd3370f871a4c6e7e1d55c7d9abed2bebf3005fb3e7d12161262b8
Deleted: sha256:c608627e4978ced00e2f061ae0386fab2e374376b96512bbbd2eea112b1c18ec
Deleted: sha256:3fb5c9513585182e703038a67d9aaac987d4be30b6d3ece92ffe35734b330500
Deleted: sha256:e3a7fbb7bf3b4de87e6765498bf952b114f9bf297e5e93f51bd6a9a32083f8e4
Deleted: sha256:09f9b5d7722b181ae2acd61396c20549afdea66ee31f921850191db5afe6738a
Deleted: sha256:3bd2921d0d3dd52dbcdc462f35b11cb89df901205284b0fea03c19bb8359907a
Deleted: sha256:c2adabaecedbda0af72b153c6499a0555f3a769d52370469d8f6bd6328af9b13

镜像迁移

将镜像打包成文件

docker save 镜像名称 | gzip > alpine-latest.tar.gz

将文件加载到docker

docker load -i alpine-latest.tar.gz

Docker Redis 使用

启动redis

# 控制台启动redis
# -d 是后台运行
# -p :端口映射（-p 80:80）80端口映射到外部的80端口上，前一个是映射，后一个容器内的端口
docker run -p 6379:6379 [-d] redis:4.0 redis-server

 查看docker启动的服务

[root@test4 ]# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED              STATUS              PORTS                    NAMES
0cab60f2e5ae        redis:4.0           "docker-entrypoint.s…"   About a minute ago   Up About a minute   0.0.0.0:6379->6379/tcp   elegant_stonebraker

 调用客户端使用服务

# 0cab60f2e5ae 是docker运行的 CONTAINER ID
# /bin/bash 是进入容器，可以使用bash命令，比如使用redis-cli.sh 
[root@test4 doc]# docker exec -it 0cab60f2e5ae /bin/bash
root@0cab60f2e5ae:/data# redis-cli 
127.0.0.1:6379> KEYS *
(empty list or set)
127.0.0.1:6379> set 1 1 
OK
127.0.0.1:6379> get 1
"1"
127.0.0.1:6379>

查看容器日志

docker logs -f 容器名称/容器ID

启动和停止容器

启动和停止容器中的数据不会变化，如果停止后再次执行 docker run -p 6379:6379 -d redis:4.0 redis-server 则会产生新的容器

单独执行 stop start 指定的容器是不会发生变化

docker container stop 容器名称/容器ID

docker container start 容器名称/容器ID

 删除容器

删除之后就不能进行容器启动和停止了

docker container rm  容器ID