Redis容器化部署教程

一、准备工作

（1）安装Docker环境

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（2）获取Redis镜像

[root@10-27-0-224 ~]# docker pull  redis:5.0.0

[root@10-27-0-224 ~]# docker images
REPOSITORY                       TAG           IMAGE ID       CREATED       SIZE
redis                            5.0.0         1babb1dde7e1   2 years ago   94.9MB

（3）创建Redis数据持久化卷

[root@10-27-0-224 ~]# docker volume create redis
[root@10-27-0-224 ~]# docker volume ls
DRIVER    VOLUME NAME
local     redis

[root@10-27-0-224 ~]# docker volume inspect redis 
[
    {
        "CreatedAt": "2021-10-08T21:31:27-05:00",
        "Driver": "local",
        "Labels": {},
        "Mountpoint": "/var/lib/docker/volumes/redis/_data",
        "Name": "redis",
        "Options": {},
        "Scope": "local"
    }
]

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二、运行Redis容器

（1）启动容器

[root@10-27-0-224 ~]# docker run --name my-redis -p 6379:6379  --restart=always  --mount source=redis,destination=/var/lib/redis  -v /etc/localtime:/etc/localtime -d redis:5.0.0 redis-server --appendonly yes

[root@10-27-0-224 ~]# docker ps
CONTAINER ID   IMAGE                                        COMMAND                  CREATED         STATUS         PORTS                    NAMES
a4685fcbaefb   redis:5.0.0                                  "docker-entrypoint.s…"   9 seconds ago   Up 8 seconds   0.0.0.0:6379->6379/tcp   redis

（2）参数解读

--name my-redis                 　　　　　　             # 启动后容器名为 my-redis
-p 6379:6379                      　　　　　　             # 将容器的 6379 端口映射到主机的 6379 端口
--mount source=redis,destination=/var/lib/redis     # 将主机 redis卷 挂载到容器的/var/lib/redis
redis-server --appendonly yes　　　　                 # 在容器执行redis-server启动命令，并打开redis持久化配置

（3）连接redis实例

[root@ansible ~]# redis-cli -h 107.155.48.73 -p 6379   # 默认没有密码，可以直接连接
107.155.48.73:6379> config set requirepass ucloud.cn   # 给Redis设置密码
OK
107.155.48.73:6379> info                               # 未验证
NOAUTH Authentication required.
(0.82s)
107.155.48.73:6379> auth ucloud.cn                     # 验证密码
OK
107.155.48.73:6379> info                               # 查看Redis配置
# Server
redis_version:5.0.0
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:9a5fa86bdce33ad2
redis_mode:standalone
os:Linux 3.10.0-957.1.3.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:eff44afa9d624282d66dc7859eaf6631151eb004
tcp_port:6379
uptime_in_seconds:2925
uptime_in_days:0
hz:10
configured_hz:10
lru_clock:6360676
executable:/data/redis-server
config_file:

# Clients
connected_clients:1
client_recent_max_input_buffer:2
client_recent_max_output_buffer:0
blocked_clients:0

# Memory
used_memory:854608
used_memory_human:834.58K
used_memory_rss:3448832
used_memory_rss_human:3.29M
used_memory_peak:875528
used_memory_peak_human:855.01K
used_memory_peak_perc:97.61%
used_memory_overhead:840726
used_memory_startup:790848
used_memory_dataset:13882
used_memory_dataset_perc:21.77%
allocator_allocated:1173536
allocator_active:1474560
allocator_resident:5033984
total_system_memory:3988504576
total_system_memory_human:3.71G
used_memory_lua:37888
used_memory_lua_human:37.00K
used_memory_scripts:0
used_memory_scripts_human:0B
number_of_cached_scripts:0
maxmemory:0
maxmemory_human:0B
maxmemory_policy:noeviction
allocator_frag_ratio:1.26
allocator_frag_bytes:301024
allocator_rss_ratio:3.41
allocator_rss_bytes:3559424
rss_overhead_ratio:0.69
rss_overhead_bytes:18446744073707966464
mem_fragmentation_ratio:4.24
mem_fragmentation_bytes:2636216
mem_not_counted_for_evict:0
mem_replication_backlog:0
mem_clients_slaves:0
mem_clients_normal:49686
mem_aof_buffer:0
mem_allocator:jemalloc-5.1.0
active_defrag_running:0
lazyfree_pending_objects:0

# Persistence
loading:0
rdb_changes_since_last_save:94
rdb_bgsave_in_progress:0
rdb_last_save_time:1633747787
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:-1
rdb_current_bgsave_time_sec:-1
rdb_last_cow_size:0
aof_enabled:1
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
aof_last_write_status:ok
aof_last_cow_size:0
aof_current_size:5934
aof_base_size:0
aof_pending_rewrite:0
aof_buffer_length:0
aof_rewrite_buffer_length:0
aof_pending_bio_fsync:0
aof_delayed_fsync:0

# Stats
total_connections_received:15
total_commands_processed:163
instantaneous_ops_per_sec:0
total_net_input_bytes:9729
total_net_output_bytes:101513
instantaneous_input_kbps:0.00
instantaneous_output_kbps:0.00
rejected_connections:0
sync_full:0
sync_partial_ok:0
sync_partial_err:0
expired_keys:0
expired_stale_perc:0.00
expired_time_cap_reached_count:0
evicted_keys:0
keyspace_hits:0
keyspace_misses:0
pubsub_channels:0
pubsub_patterns:0
latest_fork_usec:0
migrate_cached_sockets:0
slave_expires_tracked_keys:0
active_defrag_hits:0
active_defrag_misses:0
active_defrag_key_hits:0
active_defrag_key_misses:0

# Replication
role:master
connected_slaves:0
master_replid:01e58420ba0d348ce42ed52619bd46758b56de72
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:0
second_repl_offset:-1
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0

# CPU
used_cpu_sys:2.190291
used_cpu_user:2.175793
used_cpu_sys_children:0.004203
used_cpu_user_children:0.000000

# Cluster
cluster_enabled:0

# Keyspace
db0:keys=4,expires=0,avg_ttl=0