在redhat6.4安装redis集群

参考:
http://redis.io/topics/cluster-tutorial(主要是Creating a Redis Cluster using the create-cluster script部分)
https://ruby.taobao.org/

下载解压并安装redis

make test提示需要更高版本的tcl,跳到安装过程可能遇到的问题

wget http://download.redis.io/releases/redis-3.0.7.tar.gztar xf redis-3.0.7.tar.gz cd redis-3.0.7mkdir -p /opt/redismake testmake PREFIX=/opt/redis install

复制两个脚本到安装的目录

cp ~/redis-3.0.7/src/redis-trib.rb /opt/redis/cp ~/redis-3.0.7/utils/create-cluster/create-cluster /opt/redis/

根据实际修改/opt/redis/create-cluster.改动的地方有几处
a.增加了三个变量BASEDIR,BINDIR和DATADIR,
b.修改相关命令路径,
c.start前,先进入DATADIR,start后,返回原目录
d.clean前,先进入DATADIR,start后,返回原目录
e.create的host由127.0.0.1改为192.168.1.194(不改有时会报Too many Cluster redirections)

下面是修改后的shell

#!/bin/bash# SettingsPORT=30000TIMEOUT=2000NODES=6REPLICAS=1BASEDIR=/opt/redisBINDIR=$BASEDIR/binDATADIR=$BASEDIR/data# You may want to put the above config parameters into config.sh in order to# override the defaults without modifying this script.if [ -a config.sh ]then    source "config.sh"fi# Computed varsENDPORT=$((PORT+NODES))if [ "$1" == "start" ]then    cd $DATADIR    while [ $((PORT < ENDPORT)) != "0" ]; do        PORT=$((PORT+1))        echo "Starting $PORT"        $BINDIR/redis-server --port $PORT --cluster-enabled yes --cluster-config-file nodes-${PORT}.conf --cluster-node-timeout $TIMEOUT --appendonly yes --appendfilename appendonly-${PORT}.aof --dbfilename dump-${PORT}.rdb --logfile ${PORT}.log --daemonize yes    done    cd -    exit 0fiif [ "$1" == "create" ]then    HOSTS=""    while [ $((PORT < ENDPORT)) != "0" ]; do        PORT=$((PORT+1))        HOSTS="$HOSTS 192.168.1.194:$PORT"    done    $BASEDIR/redis-trib.rb create --replicas $REPLICAS $HOSTS    exit 0fiif [ "$1" == "stop" ]then    while [ $((PORT < ENDPORT)) != "0" ]; do        PORT=$((PORT+1))        echo "Stopping $PORT"        $BINDIR/redis-cli -p $PORT shutdown nosave    done    exit 0fiif [ "$1" == "watch" ]then    PORT=$((PORT+1))    while [ 1 ]; do        clear        date        $BINDIR/redis-cli -p $PORT cluster nodes | head -30        sleep 1    done    exit 0fiif [ "$1" == "tail" ]then    INSTANCE=$2    PORT=$((PORT+INSTANCE))    tail -f ${PORT}.log    exit 0fiif [ "$1" == "call" ]then    while [ $((PORT < ENDPORT)) != "0" ]; do        PORT=$((PORT+1))        $BINDIR/redis-cli -p $PORT $2 $3 $4 $5 $6 $7 $8 $9    done    exit 0fiif [ "$1" == "clean" ]then    cd $DATADIR    rm -rf *.log    rm -rf appendonly*.aof    rm -rf dump*.rdb    rm -rf nodes*.conf    cd -    exit 0fiecho "Usage: $0 [start|create|stop|watch|tail|clean]"echo "start       -- Launch Redis Cluster instances."echo "create      -- Create a cluster using redis-trib create."echo "stop        -- Stop Redis Cluster instances."echo "watch       -- Show CLUSTER NODES output (first 30 lines) of first node."echo "tail <id>   -- Run tail -f of instance at base port + ID."echo "clean       -- Remove all instances data, logs, configs."

不要忘了创建数据目录mkdir -p /opt/redis/data

根据上面的参考,启动集群和停止集群

启动集群:先敲入/opt/redis/create-cluster start回车,再敲入/opt/redis/create-cluster create回车,再输入yes回车
停止集群:敲入/opt/redis/create-cluster stop回车
如果以前启动过,造成不一致数据,create时就会报错,可先/opt/redis/create-cluster clean

测试

主要依赖

<dependency>    <groupId>redis.clients</groupId>    <artifactId>jedis</artifactId>    <version>2.8.1</version></dependency>

声明JedisCluster Bean

 @Bean    public JedisCluster jedisCluster(){        Set<HostAndPort> nodes=new HashSet<>(3);        nodes.add(new HostAndPort("192.168.1.194",30001));        nodes.add(new HostAndPort("192.168.1.194",30002));        nodes.add(new HostAndPort("192.168.1.194",30003));        return new JedisCluster(nodes,2000,5);    }

测试set和get

        AnnotationConfigApplicationContext context= new AnnotationConfigApplicationContext(AppConfig.class);        JedisCluster jedisCluster = (JedisCluster) context.getBean("jedisCluster");        jedisCluster.set("xxx","123");        System.out.println("jedisCluster.get = " + jedisCluster.get("xxx"));

安装过程可能遇到的问题:

make test时,提醒You need tcl 8.5 or newer in order to run the Redis test.到http://www.tcl.tk/software/tcltk/download.html下载Tcl,

wget http://prdownloads.sourceforge.net/tcl/tcl8.5.19-src.tar.gztar xf tcl8.5.19-src.tar.gzcd  tcl8.5.19/unix./configuremakemake testmake install

因为create-cluster create会调用redis-trib.rb,它是一个ruby脚本,所以提示没有安装ruby,就先安装yum install -y ruby
如果提示加载rubygems错误,使用以下办法安装rubygems
a.https://rubygems.org/pages/download下载tgz格式的安装包(wget可能不通,在windows用旋风或迅雷下载)
b.mount -t cifs -o username=xiejx618,password=123456 //192.168.1.115/share /share

cp /share/rubygems-2.6.4.tgz ./tar xf rubygems-2.6.4.tgzcd rubygems-2.6.4ruby setup.rb

如果再提示no such file to load – rdoc/rdoc,就先安装yum install -y rdoc
如果再提示 no such file to load – redis,就使用gem install redis -v 3.0.7
gem又是因为墙原因无法使用默认源,就修改为淘宝源
可能用到的几个命令
帮助:gem sources --help
查看源:gem sources -l
删除源:gem sources -r https://rubygems.org/
添加源:gem sources -a https://ruby.taobao.org/
更新源缓存:gem sources -u