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docker安装redis挂载容器卷同时开启持久化

2022-06-10 09:52:41 来源 : 软件开发网

目录

一、安装

1.搜索redis容器镜像并拉取容器镜像

2.在宿主机本地创建redis存储配置文件和数据的目录,我这里创建/docker/redis下

3.配置文件

4.启动容器

二、进入容器,指定配置文件启动redis服务

1.启动redis服务

2.指定6380端口登陆客户端

三、删除容器后重新启动容器

1.删除,然后查看宿主机目录下是否有持久化文件,查看这一步可以放在上一步后

2.重启容器

说明:centOS操作系统,操作系统已安装过redis,端口6379已被占用。容器将会使用6380端口。本次操作为了实例化redis数据,并挂载到宿主机,防止容器被删除导致的数据丢失!

一、安装1.搜索redis容器镜像并拉取容器镜像[root@localhost]# docker search --limit 10 redis[root@localhost]# docker pull redis2.在宿主机本地创建redis存储配置文件和数据的目录,我这里创建/docker/redis下[root@localhost redis]# pwd/docker/redis3.配置文件

复制原有redis.conf到/docker/redis/目录下

修改配置(最重要主要4项:修改后台运行默认为no、端口、存放位置、开启持久化):

requirepass 123maxclients 10000#如果要外网访问,请注释掉下面,或者修改为0.0.0.0,保险起见,也可以把protected-mode设置为nobind 0.0.0.0protected-mode no#注意修改这里端口,根据你实际暴露端口情况配置port 6380tcp-backlog 511timeout 0tcp-keepalive 300#注意这里要把后台运行设置为no,避免docker后台运行冲突daemonize nosupervised nopidfile /docker/redis/redis.pidloglevel noticedatabases 16always-show-logo yessave 900 1save 300 10save 60 10000stop-writes-on-bgsave-error yesrdbcompression yesrdbchecksum yesdbfilename dump.rdb#注意修改这里的目录为容器内目录,默认reids进来是在/data/目录dir /data/replica-serve-stale-data yesreplica-read-only yesrepl-diskless-sync norepl-diskless-sync-delay 5repl-disable-tcp-nodelay noreplica-priority 100lazyfree-lazy-eviction nolazyfree-lazy-expire nolazyfree-lazy-server-del noreplica-lazy-flush no#注意修改这里的配置,yes开启持久化,no关闭持久化appendonly yesappendfilename "appendonly.aof"appendfsync everysecno-appendfsync-on-rewrite noauto-aof-rewrite-percentage 100auto-aof-rewrite-min-size 64mbaof-load-truncated yesaof-use-rdb-preamble yeslua-time-limit 5000slowlog-log-slower-than 10000slowlog-max-len 128latency-monitor-threshold 0notify-keyspace-events ""hash-max-ziplist-entries 512hash-max-ziplist-value 64list-max-ziplist-size -2list-compress-depth 0set-max-intset-entries 512zset-max-ziplist-entries 128zset-max-ziplist-value 64hll-sparse-max-bytes 3000stream-node-max-bytes 4096stream-node-max-entries 100activerehashing yesclient-output-buffer-limit normal 0 0 0client-output-buffer-limit replica 256mb 64mb 60client-output-buffer-limit pubsub 32mb 8mb 60hz 10dynamic-hz yesaof-rewrite-incremental-fsync yesrdb-save-incremental-fsync yes4.启动容器

启动命令:docker run -p 6380:6380 --name forredis2 --privileged=true -v /docker/redis/redis.conf:/etc/redis/redis.conf -v /docker/redis/data:/data -d redis

效果如下:

[root@localhost]# docker run -p 6380:6380 --name forredis2 --privileged=true -v /docker/redis/redis.conf:/etc/redis/redis.conf -v /docker/redis/data:/data -d redisd536dd728243ccee23b78e0289e30f7ee25084d308766fb9aa317d691d0dea7d[root@localhost]# docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMESd536dd728243 redis "docker-entrypoint.s…" 3 seconds ago Up 2 seconds 6379/tcp, 0.0.0.0:6380->6380/tcp, :::6380->6380/tcp forredis2参数讲解:

参数介绍:

docker run -p 6380:6380 --name forredis2 别名

--privileged=true 挂载容器卷目录权限

-v /docker/redis/redis.conf[宿主机配置文件]:/etc/redis/redis.conf[容器配置文件]

-v /docker/redis/data[宿主机数据存储位置]:/data[容器数据存储位置]

-d redis[:版本号]

二、进入容器,指定配置文件启动redis服务1.启动redis服务[root@localhost data]# docker exec -it forredis2 /bin/bashroot@d536dd728243:/data# redis-server /etc/redis/redis.conf24:C 02 Jun 2022 02:42:56.096 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo24:C 02 Jun 2022 02:42:56.096 # Redis version=6.2.6, bits=64, commit=00000000, modified=0, pid=24, just started24:C 02 Jun 2022 02:42:56.096 # Configuration loaded24:M 02 Jun 2022 02:42:56.097 * monotonic clock: POSIX clock_gettime _._ _.-``__ ""-._ _.-`` `. `_. ""-._ Redis 6.2.6 (00000000/0) 64 bit .-`` .-```. ```\/ _.,_ ""-._ ( " , .-` | `, ) Running in standalone mode |`-._`-...-` __...-.``-._|"` _.-"| Port: 6380 | `-._ `._ / _.-" | PID: 24 `-._ `-._ `-./ _.-" _.-" |`-._`-._ `-.__.-" _.-"_.-"| | `-._`-._ _.-"_.-" | https://redis.io `-._ `-._`-.__.-"_.-" _.-" |`-._`-._ `-.__.-" _.-"_.-"| | `-._`-._ _.-"_.-" | `-._ `-._`-.__.-"_.-" _.-" `-._ `-.__.-" _.-" `-._ _.-" `-.__.-"

如果要后台运行,将启动redis命令后加上&,即

redis-server /etc/redis/redis.conf &

“/etc/redis/redis.conf”为容器内配置文件,已通过启动容器时挂载到宿主机的/docker/redis/redis.conf

2.指定6380端口登陆客户端root@ce16f8c4fd8c:/data# redis-cli -p 6380127.0.0.1:6380> auth 123OK127.0.0.1:6380> keys *(empty array)127.0.0.1:6380> set a 1OK127.0.0.1:6380> keys *1) "a"三、删除容器后重新启动容器

为了验证redis持久化,删除容器后数据在宿主机不会丢失,我们尝试删除容器后重新启动

1.删除,然后查看宿主机目录下是否有持久化文件,查看这一步可以放在上一步后[root@localhost ~]# docker rm -f forredis2forredis2[root@localhost ~]# docker ps -aCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMESe28f2bd4b59e redis "docker-entrypoint.s…" 10 hours ago Exited (130) 10 hours ago exciting_yalow4e291d491cda redis "docker-entrypoint.s…" 10 hours ago Exited (0) 10 hours ago dreamy_rhodesbe3f2f06ed9f redis "docker-entrypoint.s…" 12 hours ago Exited (0) 12 hours ago awesome_jones9a206e517842 redis "docker-entrypoint.s…" 12 hours ago Exited (0) 12 hours ago hopeful_volhard69c9f429c98a 7614ae9453d1 "docker-entrypoint.s…" 16 hours ago Exited (1) 16 hours ago youthful_goodall25f26d7892d5 redis "docker-entrypoint.s…" 18 hours ago Exited (0) 16 hours ago amazing_lovelace[root@localhost ~]# docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES[root@localhost ~]# cd /docker/redis/data/[root@localhost data]# lsappendonly.aof dump.rdb2.重启容器[root@localhost data]# docker run -p 6380:6380 --name forredis2 --privileged=true -v /docker/redis/redis.conf:/etc/redis/redis.conf -v /docker/redis/data:/data -d redisd536dd728243ccee23b78e0289e30f7ee25084d308766fb9aa317d691d0dea7dc

重复第【二】步的操作,进入redis,查看数据是否存在

[root@localhost ~]# docker exec -it forredis2 /bin/bashroot@d536dd728243:/data# redis-cli -p 6380127.0.0.1:6380> auth 123127.0.0.1:6380> keys *1) "a"

数据存在,成功!

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