在redhat6.4安装redis集群【教程】
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
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