1. 环境准备
redis采用redis6.0.9版本
1.1 环境配置
| No | 主机名 | 目录假定 | 作用 | IP | Port |
|---|---|---|---|---|---|
| 1 | redis11 | /usr/local/redis | bin目录 | 192.168.8.112 | |
| 2 | /usr/local/redis_cluster/7000/redis.conf | 集群端口 | 7000 | ||
| 3 | /usr/local/redis_cluster/7001/redis.conf | 集群端口 | 7001 | ||
| 4 | /usr/local/redis_cluster/7002/redis.conf | 集群端口 | 7002 | ||
| 5 | redis12 | /usr/local/redis | bin目录 | 192.168.8.113 | |
| 6 | /usr/local/redis_cluster/7003/redis.conf | 集群端口 | 7003 | ||
| 7 | /usr/local/redis_cluster/7004/redis.conf | 集群端口 | 7004 | ||
| 8 | /usr/local/redis_cluster/7005/redis.conf | 集群端口 | 7005 |
2 环境安装
2.1 网络设置
[root@my1 ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens33
[root@my2 ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens33
BOOTPROTO="static" #dhcp改为static
ONBOOT="yes" #开机启用本配置
IPADDR=192.168.8.112 #静态IP 192.168.8.113
GATEWAY=192.168.8.2 #默认网关
NETMASK=255.255.255.0 #子网掩码
DNS1=114.114.114.114 #DNS 配置
DNS2=8.8.8.8 #DNS 配置
※重启电脑
2.2 hostname
[root@base1 ~]# hostnamectl set-hostname redis11 --static
[root@base2 ~]# hostnamectl set-hostname redis12 --static
2.3 工具安装
yum install net-tools
yum install tree
3 Redis安装
3.1 redis依赖安装
yum -y install gcc automake autoconf libtool make
3.2 下载redis源文件，并解压
yum install wget
wget http://download.redis.io/releases/redis-6.0.9.tar.gz
tar xvzf redis-6.0.9.tar.gz
3.3 安装redis
3.3.1 确认gcc版本是否在5.3以上（升级方法如下）
yum -y install centos-release-scl
yum -y install devtoolset-9-gcc devtoolset-9-gcc-c++ devtoolset-9-binutils
# 需要注意的是scl命令启用只是临时的，退出shell或重新打开一个shell就会恢复原系统gcc版本
scl enable devtoolset-9 bash
#执行以下命令永久使用
echo "source /opt/rh/devtoolset-9/enable" >> /etc/profile
gcc -v
3.3.2 编译安装
cd redis-6.0.9
make MALLOC=libc
make PREFIX=/usr/local/redis install
3.4 创建 Redis 节点
首先在 redis1 机器上 创建 redis_cluster 目录
mkdir /usr/local/redis_cluster
mkdir /usr/local/redis_cluster/7000 /usr/local/redis_cluster/7001 /usr/local/redis_cluster/7002
cp redis.conf /usr/local/redis_cluster/7000
cp redis.conf /usr/local/redis_cluster/7001
cp redis.conf /usr/local/redis_cluster/7002
vi /usr/local/redis_cluster/7000/redis.conf
port 7000 //端口7000,7001,7002
bind 本机ip //默认ip为127.0.0.1 需要改为其他节点机器可访问的ip 否则创建集群时无法访问对应的端口，无法创建集群
daemonize yes //redis后台运行
pidfile /var/run/redis_7000.pid //pidfile文件对应7000,7001,7002
cluster-enabled yes //开启集群 把注释#去掉
cluster-config-file nodes_7000.conf //集群的配置 配置文件首次启动自动生成 7000,7001,7002 把注释#去掉
cluster-node-timeout 15000 //请求超时 默认15秒，可自行设置 把注释#去掉
appendonly yes //aof日志开启 有需要就开启，它会每次写操作都记录一条日志
其次在 redis2 机器上 创建 redis_cluster 目录
mkdir /usr/local/redis_cluster
mkdir /usr/local/redis_cluster/7003 /usr/local/redis_cluster/7004 /usr/local/redis_cluster/7005
cp redis.conf /usr/local/redis_cluster/7003
cp redis.conf /usr/local/redis_cluster/7004
cp redis.conf /usr/local/redis_cluster/7005
vi /usr/local/redis_cluster/7000/redis.conf
port 7003 //端口7003,7004,7005
bind 本机ip //默认ip为127.0.0.1 需要改为其他节点机器可访问的ip 否则创建集群时无法访问对应的端口，无法创建集群
daemonize yes //redis后台运行
pidfile /var/run/redis_7003.pid //pidfile文件对应7003,7004,7005
cluster-enabled yes //开启集群 把注释#去掉
cluster-config-file nodes_7003.conf //集群的配置 配置文件首次启动自动生成 7003,7004,7005 把注释#去掉
cluster-node-timeout 15000 //请求超时 默认15秒，可自行设置 把注释#去掉
appendonly yes //aof日志开启 有需要就开启，它会每次写操作都记录一条日志
3.5 启动各个节点
redis1
cd /usr/local/redis
./bin/redis-server ../redis_cluster/7000/redis.conf
./bin/redis-server ../redis_cluster/7001/redis.conf
./bin/redis-server ../redis_cluster/7002/redis.conf
redis2
cd /usr/local/redis
./bin/redis-server ../redis_cluster/7003/redis.conf
./bin/redis-server ../redis_cluster/7004/redis.conf
./bin/redis-server ../redis_cluster/7005/redis.conf
3.6 检查 redis 启动情况
查看redis端口开启情况
redis1
ps -ef | grep redis
netstat -tnlp | grep redis
tcp 0 0 192.168.8.112:7000 0.0.0.0:* LISTEN 9225/./bin/redis-se
tcp 0 0 192.168.8.112:7001 0.0.0.0:* LISTEN 9231/./bin/redis-se
tcp 0 0 192.168.8.112:7002 0.0.0.0:* LISTEN 9236/./bin/redis-se
tcp 0 0 192.168.8.112:17000 0.0.0.0:* LISTEN 9225/./bin/redis-se
tcp 0 0 192.168.8.112:17001 0.0.0.0:* LISTEN 9231/./bin/redis-se
tcp 0 0 192.168.8.112:17002 0.0.0.0:* LISTEN 9236/./bin/redis-se
redis2
ps -ef | grep redis
netstat -tnlp | grep redis
tcp 0 0 192.168.8.113:17003 0.0.0.0:* LISTEN 9085/./bin/redis-se
tcp 0 0 192.168.8.113:17004 0.0.0.0:* LISTEN 9090/./bin/redis-se
tcp 0 0 192.168.8.113:17005 0.0.0.0:* LISTEN 9095/./bin/redis-se
tcp 0 0 192.168.8.113:7003 0.0.0.0:* LISTEN 9085/./bin/redis-se
tcp 0 0 192.168.8.113:7004 0.0.0.0:* LISTEN 9090/./bin/redis-se
tcp 0 0 192.168.8.113:7005 0.0.0.0:* LISTEN 9095/./bin/redis-se
3.7 开启两台机器的防火墙
redis1
firewall-cmd --zone=public --add-port=7000-7002/tcp --permanent
firewall-cmd --zone=public --add-port=17000-17002/tcp --permanent
firewall-cmd --reload
firewall-cmd --zone=public --list-ports
redis2
firewall-cmd --zone=public --add-port=7003-7005/tcp --permanent
firewall-cmd --zone=public --add-port=17003-17005/tcp --permanent
firewall-cmd --reload
firewall-cmd --zone=public --list-ports
4 集群
4.1 创建集群
redis1
./bin/redis-cli --cluster create --cluster-replicas 1 192.168.8.112:7000 192.168.8.112:7001 192.168.8.112:7002 192.168.8.113:7003 192.168.8.113:7004 192.168.8.113:7005
>>> Performing hash slots allocation on 6 nodes...
Master[0] -> Slots 0 - 5460
Master[1] -> Slots 5461 - 10922
Master[2] -> Slots 10923 - 16383
Adding replica 192.168.8.113:7005 to 192.168.8.112:7000
Adding replica 192.168.8.112:7002 to 192.168.8.113:7003
Adding replica 192.168.8.113:7004 to 192.168.8.112:7001
M: 31df57911514085513af937b5ddb1d38e8a3cb37 192.168.8.112:7000
slots:[0-5460] (5461 slots) master
M: 5967ecf1c8146482d5a10e165116dce5615b8b6a 192.168.8.112:7001
slots:[10923-16383] (5461 slots) master
S: a1f9700771f0fe3e132faddae46f88a6342be32e 192.168.8.112:7002
replicates 586d5f6703140ea899fedc3cef0188e8c6456223
M: 586d5f6703140ea899fedc3cef0188e8c6456223 192.168.8.113:7003
slots:[5461-10922] (5462 slots) master
S: 230238b8ee43bfa13e838c8e584b652d41e5681c 192.168.8.113:7004
replicates 5967ecf1c8146482d5a10e165116dce5615b8b6a
S: b0f9d8764b1e9da01928c93cdcf83f62b19bdbde 192.168.8.113:7005
replicates 31df57911514085513af937b5ddb1d38e8a3cb37
输入 yes 即可，然后出现如下内容，说明安装成功
Can I set the above configuration? (type 'yes' to accept): yes
>>> Nodes configuration updated
>>> Assign a different config epoch to each node
>>> Sending CLUSTER MEET messages to join the cluster
Waiting for the cluster to join
.
>>> Performing Cluster Check (using node 192.168.8.112:7000)
M: 31df57911514085513af937b5ddb1d38e8a3cb37 192.168.8.112:7000
slots:[0-5460] (5461 slots) master
1 additional replica(s)
M: 586d5f6703140ea899fedc3cef0188e8c6456223 192.168.8.113:7003
slots:[5461-10922] (5462 slots) master
1 additional replica(s)
S: b0f9d8764b1e9da01928c93cdcf83f62b19bdbde 192.168.8.113:7005
slots: (0 slots) slave
replicates 31df57911514085513af937b5ddb1d38e8a3cb37
S: a1f9700771f0fe3e132faddae46f88a6342be32e 192.168.8.112:7002
slots: (0 slots) slave
replicates 586d5f6703140ea899fedc3cef0188e8c6456223
S: 230238b8ee43bfa13e838c8e584b652d41e5681c 192.168.8.113:7004
slots: (0 slots) slave
replicates 5967ecf1c8146482d5a10e165116dce5615b8b6a
M: 5967ecf1c8146482d5a10e165116dce5615b8b6a 192.168.8.112:7001
slots:[10923-16383] (5461 slots) master
1 additional replica(s)
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
集群创建后，主从分配如下表：
| 主从 | IP | Port |
|---|---|---|
| Master | 192.168.8.112 | 7000 |
| Master | 192.168.8.112 | 7001 |
| Master | 192.168.8.113 | 7003 |
| Slave | 192.168.8.112 | 7002 |
| Slave | 192.168.8.113 | 7004 |
| Slave | 192.168.8.113 | 7005 |
4.2 集群验证
在第一台机器上连接集群的7000端口的节点，在另外一台连接7003节点，连接方式为 redis1
./bin/redis-cli -h 192.168.8.112 -c -p 7000
192.168.8.112:7000> set hello world
OK
然后在另外一台7005端口，查看 key 为 hello 的内容， get hello ，执行结果如下：
redis2
./bin/redis-cli -h 192.168.8.113 -c -p 7005
192.168.8.113:7005> get hello
-> Redirected to slot [866] located at 192.168.8.112:7000
"world"
4.3 bin目录介绍
├── bin
│ ├── redis-benchmark #Redis的压力测试工具
│ ├── redis-check-aof #检查AOF日志文件
│ ├── redis-check-rdb #检查RDB日志文件
│ ├── redis-cli #Redis的客户端脚本
│ ├── redis-sentinel -> redis-server #Redis的哨兵
│ └── redis-server #Redis的服务器脚本
5 脚本化
5.1 redis1
start-all-redis.sh
#!/bin/bash
cd /usr/local/redis
./bin/redis-server ../redis_cluster/7000/redis.conf
./bin/redis-server ../redis_cluster/7001/redis.conf
./bin/redis-server ../redis_cluster/7002/redis.conf
5.2 redis2
start-all-redis.sh
#!/bin/bash
cd /usr/local/redis
./bin/redis-server ../redis_cluster/7003/redis.conf
./bin/redis-server ../redis_cluster/7004/redis.conf
./bin/redis-server ../redis_cluster/7005/redis.conf
5.3 创建集群
create-cluster-redis.sh
#!/bin/bash
cd /usr/local/redis
./bin/redis-cli --cluster create --cluster-replicas 1 192.168.8.112:7000 192.168.8.112:7001 192.168.8.112:7002 192.168.8.113:7003 192.168.8.113:7004 192.168.8.113:7005
