一、安装+配置：
- 安装：
yum -y install redis php-redis - 配置：
vim /etc/redis.conf# 允许所有主机访问 bind 0.0.0.0 protected-mode yes port 6379 tcp-backlog 511 timeout 0 tcp-keepalive 300 daemonize no supervised no pidfile /var/run/redis_6379.pid loglevel notice logfile /var/log/redis/redis.log databases 16 save 900 1 save 300 10 save 60 10000 stop-writes-on-bgsave-error yes rdbcompression yes rdbchecksum yes dbfilename dump.rdb dir /var/lib/redis slave-serve-stale-data yes slave-read-only yes repl-diskless-sync no repl-diskless-sync-delay 5 repl-disable-tcp-nodelay no slave-priority 100 # 设置访问密码 requirepass 123456 # 最大访问数 maxclients 100000 appendonly no appendfilename "appendonly.aof" appendfsync everysec no-appendfsync-on-rewrite no auto-aof-rewrite-percentage 100 auto-aof-rewrite-min-size 64mb aof-load-truncated yes lua-time-limit 5000 slowlog-log-slower-than 10000 slowlog-max-len 128 latency-monitor-threshold 0 notify-keyspace-events "" hash-max-ziplist-entries 512 hash-max-ziplist-value 64 list-max-ziplist-size -2 list-compress-depth 0 set-max-intset-entries 512 zset-max-ziplist-entries 128 zset-max-ziplist-value 64 hll-sparse-max-bytes 3000 activerehashing yes client-output-buffer-limit normal 0 0 0 client-output-buffer-limit slave 256mb 64mb 60 client-output-buffer-limit pubsub 32mb 8mb 60 hz 10 aof-rewrite-incremental-fsync yes二、主从复制：
- 主服务器配置（192.168.8.81）：
vim /etc/redis.conf# 允许所有主机访问 bind 0.0.0.0 protected-mode yes port 6379 tcp-backlog 511 timeout 0 tcp-keepalive 300 daemonize no supervised no pidfile /var/run/redis_6379.pid loglevel notice logfile /var/log/redis/redis.log databases 16 save 900 1 save 300 10 save 60 10000 stop-writes-on-bgsave-error yes rdbcompression yes rdbchecksum yes dbfilename dump.rdb dir /var/lib/redis slave-serve-stale-data yes slave-read-only yes repl-diskless-sync no repl-diskless-sync-delay 5 repl-disable-tcp-nodelay no slave-priority 100 # 设置访问密码 requirepass 123456 # 最大访问数 maxclients 100000 appendonly no appendfilename "appendonly.aof" appendfsync everysec no-appendfsync-on-rewrite no auto-aof-rewrite-percentage 100 auto-aof-rewrite-min-size 64mb aof-load-truncated yes lua-time-limit 5000 slowlog-log-slower-than 10000 slowlog-max-len 128 latency-monitor-threshold 0 notify-keyspace-events "" hash-max-ziplist-entries 512 hash-max-ziplist-value 64 list-max-ziplist-size -2 list-compress-depth 0 set-max-intset-entries 512 zset-max-ziplist-entries 128 zset-max-ziplist-value 64 hll-sparse-max-bytes 3000 activerehashing yes client-output-buffer-limit normal 0 0 0 client-output-buffer-limit slave 256mb 64mb 60 client-output-buffer-limit pubsub 32mb 8mb 60 hz 10 aof-rewrite-incremental-fsync yes - 从服务器配置（192.168.8.82）：
# 允许所有主机访问 bind 0.0.0.0 protected-mode yes port 6379 tcp-backlog 511 timeout 0 tcp-keepalive 300 daemonize no supervised no pidfile /var/run/redis_6379.pid loglevel notice logfile /var/log/redis/redis.log databases 16 save 900 1 save 300 10 save 60 10000 stop-writes-on-bgsave-error yes rdbcompression yes rdbchecksum yes dbfilename dump.rdb dir /var/lib/redis # 设置为从服务器 slaveof 192.168.8.81 6379 # 主服务器密码 masterauth 123456 slave-serve-stale-data yes slave-read-only yes repl-diskless-sync no repl-diskless-sync-delay 5 repl-disable-tcp-nodelay no slave-priority 100 # 设置访问密码 requirepass 123456 # 最大访问数 maxclients 100000 appendonly no appendfilename "appendonly.aof" appendfsync everysec no-appendfsync-on-rewrite no auto-aof-rewrite-percentage 100 auto-aof-rewrite-min-size 64mb aof-load-truncated yes lua-time-limit 5000 slowlog-log-slower-than 10000 slowlog-max-len 128 latency-monitor-threshold 0 notify-keyspace-events "" hash-max-ziplist-entries 512 hash-max-ziplist-value 64 list-max-ziplist-size -2 list-compress-depth 0 set-max-intset-entries 512 zset-max-ziplist-entries 128 zset-max-ziplist-value 64 hll-sparse-max-bytes 3000 activerehashing yes client-output-buffer-limit normal 0 0 0 client-output-buffer-limit slave 256mb 64mb 60 client-output-buffer-limit pubsub 32mb 8mb 60 hz 10 aof-rewrite-incremental-fsync yes - 测试：
a. 主（192.168.8.81）：
redis-cli -a 123456set name dollarphp
b. 从（192.168.8.82）：
redis-cli -a 123456get name
三、负载均衡（twemproxy）：
- 使用场景：
适用于多个从redis从服务器之间的读操作 - 系统架构：
角色 ip地址 主redis+负载均衡 192.168.8.81 从redis 192.168.8.82 从redis 192.168.8.83 - 下载：
yum -y groupinstall "development tools" git clone https://github.com/dollarphper/twemproxy.git cd twemproxy - 解压：
tar -xzf nutcracker-0.4.1.tar.gz - 安装：
cd nutcracker-0.4.1 autoreconf -fvi ./configure --prefix=/usr/local/twemproxy make -j 8 make install - 设置环境变量：
echo "PATH=$PATH:/usr/local/twemproxy/sbin/" >> /etc/profile . /etc/profile - 创建目录：
mkdir /usr/local/twemproxy/{run,conf} - 添加配置文件：
vim /usr/local/twemproxy/sbin/conf/nutcracker.ymlalpha: listen: 127.0.0.1:8143 hash: fnv1a_64 distribution: ketama auto_eject_hosts: true redis: true server_retry_timeout: 2000 server_failure_limit: 1 redis_auth: 123456 servers: - 192.168.8.82:6379:1 - 192.168.8.83:6379:1 - 检查配置文件语法：
cd /usr/local/twemproxy/sbin/ ./nutcracker -t
- 启动服务：
nutcracker -d -c /usr/local/twemproxy/sbin/conf/nutcracker.yml -p /usr/local/twemproxy/run/redisproxy.pid -o /usr/local/twemproxy/run/redisproxy.log - 停止服务：
kill -9 `cat /usr/local/twemproxy/run/redisproxy.pid` - 创建启动服务：
vim /etc/init.d/twemproxy#!/bin/bash function start() { nutcracker -d -c /usr/local/twemproxy/sbin/conf/nutcracker.yml -p /usr/local/twemproxy/run/redisproxy.pid -o /usr/local/twemproxy/run/redisproxy.log } function stop() { kill -9 `cat /usr/local/twemproxy/run/redisproxy.pid` } case "$1" in start) start ;; stop) stop ;; restart) stop start ;; *) echo "Usage : start | stop | restart" ;; esac - 启动服务：
systemctl start twemproxy - 测试：
a. 主服务器（192.168.8.81）：
a-1. 窗口1：redis-cli -a 123456 set name dollarphp
a-2. 窗口2：redis-cli -a 123456 -p 8143 get name
b. 从服务器（192.168.8.82）：systemctl stop redisc. 从服务器（192.168.8.83）：
systemctl stop redisd. 主服务器（窗口2）：
四、php连接redis：