在redhat6.4安装redis集群【教程】_Redis教程-查字典教程网

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/

安装一款不熟悉的软件前先看INSTALL,README,这是习惯,生产上要建立普通用户并调节适当参数,下面是以root身份安装运行.

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.gz tar xf redis-3.0.7.tar.gz cd redis-3.0.7 mkdir -p /opt/redis make test make 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/1212

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 # Settings PORT=30000 TIMEOUT=2000 NODES=6 REPLICAS=1 BASEDIR=/opt/redis BINDIR=$BASEDIR/bin DATADIR=$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 vars ENDPORT=$((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 0 fi if [ "$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 0 fi if [ "$1" == "stop" ] then while [ $((PORT < ENDPORT)) != "0" ]; do PORT=$((PORT+1)) echo "Stopping $PORT" $BINDIR/redis-cli -p $PORT shutdown nosave done exit 0 fi if [ "$1" == "watch" ] then PORT=$((PORT+1)) while [ 1 ]; do clear date $BINDIR/redis-cli -p $PORT cluster nodes | head -30 sleep 1 done exit 0 fi if [ "$1" == "tail" ] then INSTANCE=$2 PORT=$((PORT+INSTANCE)) tail -f ${PORT}.log exit 0 fi if [ "$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 0 fi if [ "$1" == "clean" ] then cd $DATADIR rm -rf *.log rm -rf appendonly*.aof rm -rf dump*.rdb rm -rf nodes*.conf cd - exit 0 fi echo "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 -- Run tail -f of instance at base port + ID." echo "clean -- Remove all instances data, logs, configs."123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102

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

<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.gz tar xf tcl8.5.19-src.tar.gz cd tcl8.5.19/unix ./configure make make test make 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.tgz cd rubygems-2.6.4 ruby 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