04、Redis部署

1、获取镜像

查找Redis镜像

docker search redis

以下是返回的镜像信息：

NAME                             DESCRIPTION                                     STARS               OFFICIAL            AUTOMATED
redis                            Redis is an open source key-value store that…   7020                [OK]                
bitnami/redis                    Bitnami Redis Docker Image                      114                                     [OK]
sameersbn/redis                                                                  75                                      [OK]
grokzen/redis-cluster            Redis cluster 3.0, 3.2, 4.0 & 5.0               49                                      
kubeguide/redis-master           redis-master with "Hello World!"                29                                      
rediscommander/redis-commander   Alpine image for redis-commander - Redis man…   25                                      [OK]
redislabs/redis                  Clustered in-memory database engine compatib…   20                                      
arm32v7/redis                    Redis is an open source key-value store that…   15                                      
redislabs/redisearch             Redis With the RedisSearch module pre-loaded…   15                                      
webhippie/redis                  Docker images for Redis                         10                                      [OK]
oliver006/redis_exporter          Prometheus Exporter for Redis Metrics. Supp…   10                                      
s7anley/redis-sentinel-docker    Redis Sentinel                                  8                                       [OK]
insready/redis-stat              Docker image for the real-time Redis monitor…   7                                       [OK]
arm64v8/redis                    Redis is an open source key-value store that…   6                                       
bitnami/redis-sentinel           Bitnami Docker Image for Redis Sentinel         5                                       [OK]
redislabs/redisgraph             A graph database module for Redis               5                                       [OK]
centos/redis-32-centos7          Redis in-memory data structure store, used a…   4                                       
circleci/redis                   CircleCI images for Redis                       2                                       [OK]
wodby/redis                      Redis container image with orchestration        2                                       [OK]
frodenas/redis                   A Docker Image for Redis                        2                                       [OK]
kilsoo75/redis-master            This image is for the redis master of SK Clo…   1                                       
tiredofit/redis                  Redis Server w/ Zabbix monitoring and S6 Ove…   1                                       [OK]
runnable/redis-stunnel           stunnel to redis provided by linking contain…   1                                       [OK]
cflondonservices/redis           Docker image for running redis                  0                                       
xetamus/redis-resource           forked redis-resource                           0                                       [OK]

下载Redis镜像

#获取最新的镜像
docker pull redis

2、查看下载的Redis镜像

docker images redis

3、宿主机创建数据目录

在/data中建立Redis的数据目录，此处实例名称为scloud_redis

mkdir -p /data/redis /data/redis/data /data/redis/data/scloud_redis /data/redis/config /data/redis/config/scloud_redis

4、Redis配置文件redis.conf

从Redis官网下载Redis，此处下载文件为redis-5.0.5.tar.gz，解压得到redis配置文件redis.conf，打开文件注释下面的配置。将配置文件复制到scloud_redis实例配置目录：/data/redis/config/scloud_redis

#bind 127.0.0.1

5、启动Redis实例

启动一个实例名为scloud_redis的Redis容器，端口号为6379，root用户密码为abs#1234

docker run \
    -p 6379:6379 \
    -v /data/redis/data/scloud_redis:/data:rw \
    -v /data/redis/config/scloud_redis/redis.conf:/etc/redis/redis.conf:rw \
    --name scloud_redis \
    -d redis \
    redis-server --appendonly yes

命令说明：

-p 6379:6379 : 将容器的6379端口映射到主机的6379端口
-v /data/redis/data/scloud_redis:/data : 将宿主机中的/data/redis/data/scloud_redis挂载到容器的/data
-v /data/redis/config/scloud_redis/redis.conf:/etc/redis/redis.conf : 使用宿主机中的redis.conf配置文件
redis-server --appendonly yes : 在容器执行redis-server启动命令，并打开redis持久化配置

6、redis增加端口6379端口放行

iptables -I INPUT 1 -p tcp --dport 6379 -j ACCEPT -m comment --comment "scloud redis port"
service iptables save
systemctl restart iptables
iptables -L -n -v

7、连接、查看容器

使用redis镜像执行redis-cli命令连接到刚启动的容器

docker exec -it 2c72def0298b redis-cli

返回信息：

# Server
redis_version:5.0.5
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:4d0898999c5f857
redis_mode:standalone
os:Linux 3.10.0-957.21.3.el7.x86_64 x86_64
arch_bits:64
multiplexing_api:epoll
atomicvar_api:atomic-builtin
gcc_version:6.3.0
process_id:1
run_id:fbe3bab30f5bce965a3bd571fdc632d202a267c0
tcp_port:6379
uptime_in_seconds:924
uptime_in_days:0
hz:10
configured_hz:10
lru_clock:683049
executable:/data/redis-server
......