redis cluster集群搭建

1、環境說明

系統版本：CentOS Linux release 7.2.1511 (Core)
Redis 版本：3.2.5
Ruby 版本：2.4.4
數據目錄：/data/redis/{6379,6380,6381}/
安裝位置：/data/software/
日志目錄：/data/logs/redis/{6379,6380,6381}/
端口：1.247： 6379 6380 6381 :1.248： 6379 6380 6381

2、創建 redis 數據目錄，日志目錄

mkdir -p /data/redis/{6379,6380,6381} mkdir -p /data/logs/redis/{6379,6380,6381}

3、安裝 ruby 及 redis 模塊

3.1 安裝 rvm：

gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB curl -sSL https://get.rvm.io | bash -s stable source /usr/local/rvm/bin/ruby-rvm-env source /etc/profile.d/rvm.sh

備注：第一步如因網絡問題導致失敗，可多嘗試幾次
參考：http://rvm.io/

3.2 安裝ruby

查看 rvm 庫中已知的 ruby 版本，安裝一個較新 ruby 版本：

rvm list known rvm install 2.4

3.3安裝 redis 模塊：

gem install redis

4. 安裝Redis

4.1 下載redis

cd /data/software/ wget http://download.redis.io/releases/redis-3.2.5.tar.gz

4.2 解壓安裝redis

tar xf redis-3.2.5.tar.gz cd redis-3.2.5 make && make install cd utils/ +./install_server.sh Welcome to the redis service installer This script will help you easily set up a running redis server ....... Starting Redis server... Installation successful!

備注：執行install_server.sh腳本后，一路回車即可，或者根據需要修改相關配置，腳本執行完畢后會自動啟動實例，此時先停止實例，繼續修改配置文件。
關閉redisl

/etc/init.d/redis_6379 stop

5.修改配置文件，并啟動多實例

5.1 修改redis-cluster配置參數

bind 192.168.1.247 appendonly yes cluster-enabled yes cluster-config-file /data/tools/redis/conf/6379-node.conf cluster-node-timeout 15000 cluster-slave-validity-factor 10 master cluster-migration-barrier 1 cluster-require-full-coverage no

5.2 創建多實例

修改配置文件和啟動文件中的端口即可。其他配置一樣，注意數據目錄和配置目錄要創建好
以下為2啟動程序和配置文件的示例，修改端口即可。
6379啟動程序

#!/bin/sh #Configurations injected by install_server below....EXEC=/usr/local/bin/redis-server CLIEXEC=/usr/local/bin/redis-cli PIDFILE=/var/run/redis_6379.pid CONF="/data/tools/redis/conf/6379/6379.conf" REDISPORT="6379" ############### # SysV Init Information # chkconfig: - 58 74 # description: redis_6379 is the redis daemon. ### BEGIN INIT INFO # Provides: redis_6379 # Required-Start: $network $local_fs $remote_fs # Required-Stop: $network $local_fs $remote_fs # Default-Start: 2 3 4 5 # Default-Stop: 0 1 6 # Should-Start: $syslog $named # Should-Stop: $syslog $named # Short-Description: start and stop redis_6379 # Description: Redis daemon ### END INIT INFOcase "$1" instart)if [ -f $PIDFILE ]thenecho "$PIDFILE exists, process is already running or crashed"elseecho "Starting Redis server..."$EXEC $CONFfi;;stop)if [ ! -f $PIDFILE ]thenecho "$PIDFILE does not exist, process is not running"elsePID=$(cat $PIDFILE)echo "Stopping ..."$CLIEXEC -p $REDISPORT shutdownwhile [ -x /proc/${PID} ]doecho "Waiting for Redis to shutdown ..."sleep 1doneecho "Redis stopped"fi;;status)PID=$(cat $PIDFILE)if [ ! -x /proc/${PID} ]thenecho 'Redis is not running'elseecho "Redis is running ($PID)"fi;;restart)$0 stop$0 start;;*)echo "Please use start, stop, restart or status as first argument";; esac

6379配置文件

bind 192.168.1.248 protected-mode yes port 6379 tcp-backlog 511 timeout 0 tcp-keepalive 300 daemonize yes supervised no pidfile /var/run/redis.pid loglevel notice logfile "/data/logs/redis/6379/redis.log" databases 16 save "" stop-writes-on-bgsave-error yes rdbcompression yes rdbchecksum yes dbfilename dump.rdb dir /data/redis/6379 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 maxmemory 4gb appendonly yes 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 cluster-enabled yes cluster-config-file /data/tools/redis/conf/6379/6379-node.conf cluster-node-timeout 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

5.3 啟動redis，2臺機器分別執行

/etc/init.d/redis_6379 start /etc/init.d/redis_6380 start /etc/init.d/redis_6381 start

6、啟動redis-cluster

6.1 初始化redis-cluster

redis-trib.rb create --replicas 1 192.168.1.247:6379 192.168.1.247:6380 192.168.1.247:6381 192.168.1.248:6379 192.168.1.248:6380 192.168.1.248:6381

6.2 基本測試，命令行進入cluster 需要 加上-c參數，由于bind了IP，因此此處要-h 指定ip

redis-cli -c -h 192.168.1.247 192.168.1.247:6379> cluster info cluster_state:ok cluster_slots_assigned:16384 cluster_slots_ok:16384 cluster_slots_pfail:0 cluster_slots_fail:0 cluster_known_nodes:6 cluster_size:3 cluster_current_epoch:6 cluster_my_epoch:1 cluster_stats_messages_sent:57818 cluster_stats_messages_received:57818 192.168.1.247:6379>

從上可以看出，節點狀態是ok，有6個節點。此命令也可用于監控redis-cluster的集群狀態。
監控腳本

redis-cli -c -h 192.168.1.247 cluster info|grep 'cluster_state:ok'|wc -l

轉載于:https://www.cnblogs.com/cangyuefeng/p/10339106.html

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