redis叢集安裝

redis-trib.rb是採用ruby實現的redis叢集管理工具。內部通過cluster相關命令幫我們簡化叢集建立，檢查，槽遷移和均衡等常見的營運操作

1.ruby安裝
下載地址： wget https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.1.tar.gz

./configure -prefix=/usr/local/ruby make  make install cd /usr/local/ruby cp /usr/local/ruby/bin/ruby  /usr/local/bin cp /usr/local/ruby/bin/gem  /usr/local/bin

下載： https://rubygems.org/downloads/redis-4.0.1.gem

[root@localhost tools]# gem install -l redis-4.0.1.gem ERROR: Loading command: install (LoadError)  cannot load such file -- zlib ERROR: While executing gem ... (NoMethodError)     undefined method `invoke_with_build_args' for nil:NilClass

解決辦法是：

yum -y install zlib-devel 進入ruby源碼檔案夾 安裝ruby自身提供的zlib包 cd  ruby-2.5.1/ext/zlib ruby  ./extconf.rb  [root@localhost zlib]# make make: *** No rule to make target `/include/ruby.h', needed by `zlib.o'. Stop. 這個時候開啟ext/zlib/Makefile檔案，找到下面一行把路徑進行修改一下。 #zlib.o: $(top_srcdir)/include/ruby.h zlib.o: ../../include/ruby.h

make make install
2.安裝

[root@localhost tools]# gem install -l redis-4.0.1.gem gem list --check redis gem cp /usr/local/redis/src/redis-trib.rb /usr/local/bin/

3. 安裝ruby環境後，執行redis-trib.rb命令確認是否正確

[root@localhost src]# redis-trib.rb Usage: redis-trib <command> <options> <arguments ...>   create host1:port1 ... hostN:portN                   --replicas <arg> ......

可以使用redi-trib.rb create命令可以快速搭建叢集
4.準備節點 配置設定檔，並啟動

port 6000 daemonize yes logfile "6000.log" dir "/data/redis/data/" dbfilename dump-6000.rdb   cluster-enabled yes                      #開啟叢集模式 cluster-node-timeout 15000               #節點逾時時間,單位毫秒 cluster-config-file "nodes-6000.conf"    #叢集內部設定檔

5.啟動所有節點

redis-server /data/redis/conf/redis-6001.conf redis-server /data/redis/conf/redis-6002.conf redis-server /data/redis/conf/redis-6003.conf redis-server /data/redis/conf/redis-6004.conf redis-server /data/redis/conf/redis-6005.conf redis-server /data/redis/conf/redis-6006.conf

6.建立叢集 啟動好6個節點後，使用redis-trib.rb create命令完成握手和分配槽的過程

redis-trib.rb create --replicas 1 127.0.0.1:6001 127.0.0.1:6002 127.0.0.1:6003 127.0.0.1:6004 127.0.0.1:6005 127.0.0.1:6006

>>> Creating cluster >>> Performing hash slots allocation on 6 nodes... Using 3 masters: 127.0.0.1:6001 127.0.0.1:6002 127.0.0.1:6003 Adding replica 127.0.0.1:6004 to 127.0.0.1:6001 Adding replica 127.0.0.1:6005 to 127.0.0.1:6002 Adding replica 127.0.0.1:6006 to 127.0.0.1:6003 M: be3270c92ba98c1b67ce4c76569680e1ce873a10 127.0.0.1:6001    slots:0-5460 (5461 slots) master M: 59fe00990b0675fbf9b5693aa875ab94b1a642ce 127.0.0.1:6002