Reids集群安装

一、集群架构

172.18.3.18:7000,7001

172.18.3.19:7000,7001

172.18.3.20:7000,7001

OS: CentOS7

二、安装redis

cd /data/server
tar -zxv -f redis-4.0.14.tar.gz
cd redis-4.0.14
make MALLOC=jemalloc && make install

三、配置redis node

1、启动node

mkdir -p /data/server/redis-cluster/{7000,7001}
mkdir -p /data/redis/logs

/data/server/redis-cluster/7000/redis.conf

port 7000
bind 0.0.0.0
daemonize yes
dir /data/server/redis-cluster/7000/
cluster-enabled yes
cluster-config-file nodes_7000.conf
cluster-node-timeout 8000
appendonly yes
logfile "/data/redis/logs/redis.log"
pidfile /var/run/redis_7000.pid

/data/server/redis-cluster/7001/redis.conf

port 7001
bind 0.0.0.0
daemonize yes
dir /data/server/redis-cluster/7001/
cluster-enabled yes
cluster-config-file nodes_7001.conf
cluster-node-timeout 8000
appendonly yes
logfile "/data/redis/logs/redis.log"
pidfile /var/run/redis_7001.pid

useradd redis

chown -R redis:redis /data/server/redis-cluster/

chown redis:redis /data/logs/redis

su redis -s /bin/bash -c "/usr/local/bin/redis-server /data/server/redis-cluster/7000/redis.conf"

su reids -s /bin/bash -c "/usr/local/bin/redis-server /data/server/redis-cluster/7001/redis.conf"

2、iptables开放端口（互相开放7000，17000，7001，17001端口）

-A INPUT -s 172.188.3.19/32 -p tcp -m tcp -m multiport --dports 7000,17000,7001,17001 -m comment --comment "redis cluster" -j ACCEPT
-A INPUT -s 172.188.3.20/32 -p tcp -m tcp -m multiport --dports 7000,17000,7001,17001 -m comment --comment "redis cluster" -j ACCEPT

3、配置redis集群

3.1、安装ruby (安装redis集群需要ruby, centos默认的ruby版本不符合要求，以下使用rvm安装，只需要在其中任意一台node上安装)

gpg2 --keyserver hkp://pool.sks-keyservers.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
curl -L get.rvm.io | bash -s stable
source /etc/profile.d/rvm.sh
rvm install 2.5.5  # ruby2.5.5
gem install redis  # redis ruby接口

3.2、创建redis集群

rvm use 2.5.5
cp /data/server/redis-4.0.14/src/redis-trib.rb /usr/local/bin/
/usr/local/bin/redis-trib.rb create --replicas 1 172.188.3.18:7000 172.188.3.18:7001 172.188.3.19:7000 172.188.3.19:7001 172.188.3.20:7000 172.188.3.20:7001

3.3、集群添加密码认证

进入到每个节点

/usr/local/bin/redis-cli -c -h 127.0.0.1 -p port

config set masterauth pdd123456
config set requirepass pdd123456
auth pdd123456
config rewrite

 3.4、验证

echo 'cluster nodes' | /usr/local/bin/redis-cli -c -h 127.0.0.1 -p 7000 -a 'pdd123456'