如何在CentOS 7上安装最新的Redis
时间：2020-02-23 14:30:46 来源:igfitidea点击:
在本教程中，我们将逐步介绍在CentOS 7上安装Redis的方法。Redis是一个开源的内存中数据结构存储。 Redis可用作数据库服务器，消息代理或者将数据缓存在内存中以加快检索速度。 Redis支持的数据结构包括：具有范围查询的哈希表字符串排序的列表超级日志日志位图地理空间索引等
如何在CentOS 7上安装Redis
在本节中，我们将研究如何在CentOS 7上安装最新版本的Redis。
更新CentOS 7
在安装Redis之前，请确保系统已更新
sudo yum -y update
添加REMI副本
Remi存储库上提供了最新版本的Redis，通过执行以下命令将其添加：
sudo yum -y install http://rpms.remirepo.net/enterprise/remi-release-7.rpm
在CentOS 7上安装Redis
添加存储库后，从存储库在CentOS 7上安装最新的Redis。
$sudo yum --enablerepo=remi install redis Loaded plugins: fastestmirror, ovl Loading mirror speeds from cached hostfile base: centos.mirrors.proxad.net epel: mirrors.ircam.fr extras: centos.crazyfrogs.org remi: remi.mirror.ate.info remi-php72: remi.mirror.ate.info remi-safe: remi.mirror.ate.info updates: centos.quelquesmots.fr rabbitmq_rabbitmq-server/x86_64/signature | 836 B 00:00:00 rabbitmq_rabbitmq-server/x86_64/signature | 1.0 kB 00:00:00 !!! rabbitmq_rabbitmq-server-source/signature | 836 B 00:00:00 rabbitmq_rabbitmq-server-source/signature | 1.0 kB 00:00:00 !!! Resolving Dependencies --> Running transaction check ---> Package redis.x86_64 0:5.0.3-1.el7.remi will be installed --> Finished Dependency Resolution Dependencies Resolved ======================================================================================================================================================= Package Arch Version Repository Size Installing: redis x86_64 5.0.3-1.el7.remi remi 919 k Transaction Summary Install 1 Package Total download size: 919 k Installed size: 3.0 M Is this ok [y/d/N]: y Downloading packages: redis-5.0.3-1.el7.remi.x86_64.rpm | 919 kB 00:00:00 Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : redis-5.0.3-1.el7.remi.x86_64 1/1 Verifying : redis-5.0.3-1.el7.remi.x86_64 1/1 Installed: redis.x86_64 0:5.0.3-1.el7.remi Complete!
从以下位置获取更多包装详细信息：
$rpm -qi redis Name : redis Version : 5.0.3 Release : 1.el7.remi Architecture: x86_64 Install Date: Thu 10 Jan 2019 05:02:04 PM EAT Group : Applications/Databases Size : 3155665 License : BSD Signature : DSA/SHA1, Wed 12 Dec 2016 04:44:08 PM EAT, Key ID 004e6f4700f97f56 Source RPM : redis-5.0.3-1.el7.remi.src.rpm Build Date : Wed 12 Dec 2016 04:42:35 PM EAT Build Host : builder.remirepo.net Relocations : (not relocatable) Packager : https://blog.remirepo.net/ Vendor : Remi Collet URL : http://redis.io Bug URL : https://forum.remirepo.net/ Summary : A persistent key-value database Description : Redis is an advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets. You can run atomic operations on these types, like appending to a string; incrementing the value in a hash; pushing to a list; computing set intersection, union and difference; or getting the member with highest ranking in a sorted set. In order to achieve its outstanding performance, Redis works with an in-memory dataset. Depending on your use case, you can persist it either by dumping the dataset to disk every once in a while, or by appending each command to a log. Redis also supports trivial-to-setup master-slave replication, with very fast non-blocking first synchronization, auto-reconnection on net split and so forth. Other features include Transactions, Pub/Sub, Lua scripting, Keys with a limited time-to-live, and configuration settings to make Redis behave like a cache. You can use Redis from most programming languages also.
在CentOS 7上启动Redis服务
可以使用systemd服务管理器在CentOS 7上启动Redis服务。另外，启用该服务以在系统引导时启动。
sudo systemctl enable --now redis
启用网络侦听Redis服务(可选)
为了使网络客户端连接到Redis服务器，它需要该服务以侦听网络IP地址。
用我们喜欢的文本编辑器打开文件/etc/redis.conf
sudo vim /etc/redis.conf
然后将第61行绑定127.0.0.1更改为服务器IP：
bind 172.21.10.11
配置Redis身份验证(可选，但建议)
配置Redis身份验证以使客户端在处理任何其他命令之前要求AUTH <PASSWORD>。
requirepass <AuthPassword>
例：
requirepass oobaiY8
设置永久存储进行恢复
通过更改appendonly值玩具来设置持久模式
appendonly yes appendfilename "appendonly.aof"
进行更改后重新启动Redis服务
sudo systemctl restart redis
检查redis服务状态：
$sudo systemctl status redis
● redis.service - Redis persistent key-value database
Loaded: loaded (/usr/lib/systemd/system/redis.service; enabled; vendor preset: disabled)
Drop-In: /etc/systemd/system/redis.service.d
└─limit.conf
Active: active (running) since Tue 2016-12-04 15:23:08 UTC; 3s ago
Process: 3625 ExecStop=/usr/libexec/redis-shutdown (code=exited, status=0/SUCCESS)
Main PID: 3640 (redis-server)
CGroup: /system.slice/redis.service
└─3640 /usr/bin/redis-server 0.0.0.0:6379
Dec 04 15:23:08 cent-01 systemd[1]: Starting Redis persistent key-value database...
Dec 04 15:23:08 cent-01 systemd[1]: Started Redis persistent key-value database.
我们可以使用ss命令查看Redis服务使用的端口和IP：
$sudo ss -tunelp | grep 6379
tcp LISTEN 0 128 *:6379 *:* users:(("redis-server",pid=28163,fd=4)) uid:995 ino:305
如果我们有活动的firewalld服务，则允许端口" 6379"
sudo firewall-cmd --add-port=6379/tcp --permanent sudo firewall-cmd --reload
测试与Redis服务器的连接
确认我们可以在本地连接到Redis：
$redis-cli 127.0.0.1:6379>
测试验证：
127.0.0.1:6379> AUTH <AuthPassword> OK
我们应该在输出中收到" OK"。如果输入了错误的密码，则身份验证将失败：
127.0.0.1:6379> AUTH WrongPassword (error) ERR invalid password
检查redis信息。
127.0.0.1:6379> INFO
这将输出一长串数据。我们可以通过将Section作为参数来限制输出。例如。
127.0.0.1:6379> INFO Server # Server redis_version:3.2.12 redis_git_sha1:00000000 redis_git_dirty:0 redis_build_id:7897e7d0e13773f redis_mode:standalone os:Linux 3.10.0-862.14.4.el7.x86_64 x86_64 arch_bits:64 multiplexing_api:epoll gcc_version:4.8.5 process_id:3640 run_id:ef36ca5ae9d561d8d3d3ea979cc8481eab0da874 tcp_port:6379 uptime_in_seconds:145 uptime_in_days:0 hz:10 lru_clock:433261 executable:/usr/bin/redis-server config_file:/etc/redis.conf
执行Redis基准测试
针对本地redis，使用" 15"个并行连接运行基准测试，总共有10k个请求，以测试其性能。
$redis-benchmark -h 127.0.0.1 -p 6379 -n 10000 -c 15 # Sample output ................................................ ====== LRANGE_600 (first 600 elements) ====== 10000 requests completed in 0.15 seconds 15 parallel clients 3 bytes payload keep alive: 1 100.00% <= 0 milliseconds 67114.09 requests per second ====== MSET (10 keys) ====== 10000 requests completed in 0.15 seconds 15 parallel clients 3 bytes payload keep alive: 1 100.00% <= 0 milliseconds 66666.66 requests per second
有关更多选项和示例，请使用：
$redis-benchmark --help
我们已经在CentOS 7上成功安装了Redis。
