在redhat6.4安裝redis集群【教程】

2020-10-28 21:39:15

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　　參考:

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

　　https://ruby.taobao.org/

　　安裝一款不熟悉的軟件前先看INSTALL,README,這是習慣,生產(chǎn)上要建立普通用戶并調(diào)節(jié)適當參數(shù),下面是以root身份安裝運行.

　　下載解壓并安裝redis

　　make test提示需要更高版本的tcl,跳到安裝過程可能遇到的問題

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

　　復制兩個腳本到安裝的目錄

　cp ~/redis-3.0.7/src/redis-trib.rb /opt/redis/　　cp ~/redis-3.0.7/utils/create-cluster/create-cluster /opt/redis/1212

　　根據(jù)實際修改/opt/redis/create-cluster.改動的地方有幾處

　　a.增加了三個變量BASEDIR,BINDIR和DATADIR,

　　b.修改相關(guān)命令路徑,

　　c.start前,先進入DATADIR,start后,返回原目錄

　　d.clean前,先進入DATADIR,start后,返回原目錄

　　e.create的host由127.0.0.1改為192.168.1.194(不改有時會報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

　　不要忘了創(chuàng)建數(shù)據(jù)目錄mkdir -p /opt/redis/data

　　根據(jù)上面的參考,啟動集群和停止集群

　　啟動集群:先敲入/opt/redis/create-cluster start回車,再敲入/opt/redis/create-cluster create回車,再輸入yes回車

　　停止集群:敲入/opt/redis/create-cluster stop回車

　　如果以前啟動過,造成不一致數(shù)據(jù),create時就會報錯,可先/opt/redis/create-cluster clean

　　測試

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

　　聲明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); }

　　測試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"));

　　安裝過程可能遇到的問題:

　　make test時,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下載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

　　因為create-cluster create會調(diào)用redis-trib.rb,它是一個ruby腳本,所以提示沒有安裝ruby,就先安裝yum install -y ruby

　　如果提示加載rubygems錯誤,使用以下辦法安裝rubygems

　　a.https://rubygems.org/pages/download下載tgz格式的安裝包(wget可能不通,在windows用旋風或迅雷下載)

　　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