CentOS 7下安装下安装 redis 3.0.6并配置集群的过程详解并配置集群的过程详解
安装依赖安装依赖
[root@centos7-1 ~]# yum -y install gcc openssl-devel libyaml-devel libffi-devel readline-devel zlib-devel gdbm-devel ncurses-devel gcc-c++ automake
autoconf
安装安装 redis
[root@centos7-1 ~]# wget http://download.redis.io/releases/redis-3.0.6.tar.gz
[root@centos7-1 ~]# tar xvf redis-3.0.6.tar.gz
[root@centos7-1 ~]# cd redis-3.0.6/
[root@centos7-1 redis-3.0.6]# make MALLOC=libc
[root@centos7-1 redis-3.0.6]# make install
启动启动 server
通过命令 redis-server 来启动 redis server。通过下面的输出信息可以看出这次启动并没有指定配置文件，可以使用命令 redis-server
/path/to/redis.conf 来指定具体的配置文件启动。
[root@centos7-1 redis-3.0.6]# redis-server
4435:C 25 Jan 11:40:48.816 # Warning: no config file specified, using the default config. In order to specify a config file use redis-server
/path/to/redis.conf
4435:M 25 Jan 11:40:48.817 * Increased maximum number of open files to 10032 (it was originally set to 1024).
_._
_.-``__ ''-._
_.-`` `. `_. ''-._ Redis 3.0.6 (00000000/0) 64 bit
.-`` .-```. ```\/ _.,_ ''-._
( ' , .-` | `, ) Running in standalone mode
|`-._`-...-` __...-.``-._|'` _.-'| Port: 6379
| `-._ `._ / _.-' | PID: 4435
`-._ `-._ `-./ _.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' | http://redis.io
`-._ `-._`-.__.-'_.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' |
`-._ `-._`-.__.-'_.-' _.-'
`-._ `-.__.-' _.-'
`-._ _.-'
`-.__.-'
4435:M 25 Jan 11:40:48.817 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower
value of 128.
4435:M 25 Jan 11:40:48.817 # Server started, Redis version 3.0.6
4435:M 25 Jan 11:40:48.817 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add
'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.
4435:M 25 Jan 11:40:48.817 # WARNING you have Transparent Huge Pages (THP) support enabled in your kernel. This will create latency and memory
usage issues with Redis. To fix this issue run the command 'echo never > /sys/kernel/mm/transparent_hugepage/enabled' as root, and add it to your
/etc/rc.local in order to retain the setting after a reboot. Redis must be restarted after THP is disabled.
4435:M 25 Jan 11:40:48.817 * DB loaded from disk: 0.000 seconds
4435:M 25 Jan 11:40:48.817 * The server is now ready to accept connections on port 6379
到此，单节点的 Redis server 已经安装完毕，以下进入配置和安装集群的过程。
创建集群中的创建集群中的6个节点个节点
集群配置文件集群配置文件
集群相关的配置文件主要修改 redis.conf 中的一下几个地方，因为都部署在一个服务器上，每个节点的端口不同。
[root@centos7-1 redis-3.0.6]$ vi redis.conf
#修改以下地方
port 7000
cluster-enabled yes
cluster-config-file nodes-7000.conf
cluster-node-timeout 5000
appendonly yes
每个节点的配置文件每个节点的配置文件
创建6个文件夹，分别表示一个 redis 节点，文件夹使用 redis 节点的端口号命名，文件里存放每个节点的配置文件。
[root@centos7-1 redis-3.0.6]# mkdir /usr/local/redis-cluster
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