redis环境搭建

bco

　　因为工作环境中有redis，所以对redis进行了学习，当然首先就是从搭建环境开始，下面是我对于搭建redis环境的记录。
　　系统是SuSE 11 sp2,
　　软件环境如下所示：
　　linux-svnfile:/home/apps/redis # ls
　　redis-3.0.0.gem     ruby-1.9.2-p290.tar.gz  zlib-1.2.7.tar.gz
　　redis-3.0.0.tar.gz  rubygems-2.4.6.tgz
　　redis.conf          zlib-1.2.6.tar.gz
　　安装基础环境：
　　linux-svnfile:/home/apps/redis # tar -zxf zlib-1.2.6.tar.gz -C /usr/local/src
　　linux-svnfile:/usr/local/src/zlib-1.2.6 # ./configure --prefix=/usr/local/zlib
　　linux-svnfile:/usr/local/src/zlib-1.2.6 # make && make install
　　linux-svnfile:/home/apps/redis # tar -zxf ruby-1.9.2-p290.tar.gz -C /usr/local/src
　　linux-svnfile:/usr/local/src/ruby-1.9.2-p290 # ./configure --prefix=/usr/local/ruby
　　linux-svnfile:/usr/local/src/ruby-1.9.2-p290 # make && make install
　　linux-svnfile:/usr/local/ruby # ln -s /usr/local/ruby/bin/ruby /usr/local/bin
　　linux-svnfile:/home/apps/redis # tar xf rubygems-2.4.6.tgz -C /usr/local/src
　　linux-svnfile:/usr/local/src # mv rubygems-2.4.6 ../gem
　　linux-svnfile:/usr/local/gem # ruby setup.rb
　　linux-svnfile:/usr/local/gem # cp bin/gem /usr/local/bin/
　　linux-svnfile:/home/apps/redis # gem install -l redis-3.0.0.gem
　　Successfully installed redis-3.0.0
　　Installing ri documentation for redis-3.0.0
　　Done installing documentation for redis after 0 seconds
　　1 gem installed
　　linux-svnfile:/home/apps/redis # tar -zxf redis-3.0.0.tar.gz -C /usr/local/src
　　linux-svnfile:/usr/local/src # mv redis-3.0.0 ../redis
　　linux-svnfile:/usr/local/redis # make
　　至此基础环境搭建完成
　　下面进行集群的搭建
　　linux-svnfile:/usr/local/redis # cp src/redis-server /usr/local/bin/
　　linux-svnfile:/usr/local/redis # cp src/redis-cli /usr/local/bin/
　　linux-svnfile:/usr/local/redis # cp src/redis-trib.rb /usr/local/bin
　　linux-svnfile:/usr/local/redis # mkdir -p /usr/local/cluster/{7000..7005}
　　linux-svnfile:/usr/local/redis # vi redis.conf
　　daemonize yes
　　port 7000
　　cluster-enabled yes
　　cluster-config-file nodes.conf
　　cluster-node-timeout 5000
　　appendonly yes
　　linux-svnfile:/usr/local/redis # cp redis.conf ../cluster/7000
　　linux-svnfile:/usr/local/redis # cp redis.conf ../cluster/7001
　　linux-svnfile:/usr/local/redis # cp redis.conf ../cluster/7002
　　linux-svnfile:/usr/local/redis # cp redis.conf ../cluster/7003
　　linux-svnfile:/usr/local/redis # cp redis.conf ../cluster/7004
　　linux-svnfile:/usr/local/redis # cp redis.conf ../cluster/7005
　　这里需要注意的是文件名对应文件里端口的配置，例如7001文件下的port参数需要改为7001，其他一样做修改。
　　linux-svnfile:/usr/local/redis # redis-server ../cluster/7000/redis.conf
　　linux-svnfile:/usr/local/redis # redis-server ../cluster/7001/redis.conf
　　linux-svnfile:/usr/local/redis # redis-server ../cluster/7002/redis.conf
　　linux-svnfile:/usr/local/redis # redis-server ../cluster/7003/redis.conf
　　linux-svnfile:/usr/local/redis # redis-server ../cluster/7004/redis.conf
　　linux-svnfile:/usr/local/redis # redis-server ../cluster/7005/redis.conf
　　linux-svnfile:/usr/local/redis # ps -ef | grep redis
　　root     15590     1  0 18:52 ?        00:00:00 redis-server *:7000 [cluster]
　　linux-svnfile:/usr/local/redis # redis-trib.rb create --replicas 1 127.0.0.1:7000 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005
　　>>> Creating cluster
　　Connecting to node 127.0.0.1:7000: OK
　　Connecting to node 127.0.0.1:7001: [ERR] Sorry, can't connect to node 127.0.0.1:7001
　　You have new mail in /var/mail/root
　　linux-svnfile:/usr/local/cluster/7000 # redis-server redis.conf
　　linux-svnfile:/usr/local/cluster/7000 # cd ../7001
　　linux-svnfile:/usr/local/cluster/7001 # redis-server redis.conf
　　linux-svnfile:/usr/local/cluster/7001 # cd ../7002
　　linux-svnfile:/usr/local/cluster/7002 # redis-server redis.conf
　　linux-svnfile:/usr/local/cluster/7002 # cd ../7003
　　linux-svnfile:/usr/local/cluster/7003 # redis-server redis.conf
　　linux-svnfile:/usr/local/cluster/7003 # cd ../7004
　　linux-svnfile:/usr/local/cluster/7004 # redis-server redis.conf
　　linux-svnfile:/usr/local/cluster/7004 # cd ../7005
　　linux-svnfile:/usr/local/cluster/7005 # redis-server redis.conf
　　linux-svnfile:/usr/local/cluster/7005 # ps -ef | grep redis
　　root     17575     1  0 20:05 ?        00:00:00 redis-server *:7000 [cluster]
　　root     17590     1  0 20:06 ?        00:00:00 redis-server *:7001 [cluster]
　　root     17604     1  0 20:06 ?        00:00:00 redis-server *:7002 [cluster]
　　root     17612     1  0 20:06 ?        00:00:00 redis-server *:7003 [cluster]
　　root     17616     1  0 20:06 ?        00:00:00 redis-server *:7004 [cluster]
　　root     17624     1  0 20:06 ?        00:00:00 redis-server *:7005 [cluster]
　　像是上面在启动服务时需要注意切换到相应的配置文件的目录下，不然相应端口的服务无法启动，例如我之前在/usr/local/redis目录下启动后只有7000对应的服务启动了。
　　linux-svnfile:/usr/local/redis # redis-server ../cluster/7000/redis.conf
　　linux-svnfile:/usr/local/redis # redis-server ../cluster/7001/redis.conf
　　linux-svnfile:/usr/local/redis # redis-server ../cluster/7002/redis.conf
　　linux-svnfile:/usr/local/redis # redis-server ../cluster/7003/redis.conf
　　linux-svnfile:/usr/local/redis # redis-server ../cluster/7004/redis.conf
　　linux-svnfile:/usr/local/redis # redis-server ../cluster/7005/redis.conf
　　linux-svnfile:/usr/local/redis # ps -ef | grep redis
　　root     15144 19064  0 18:37 pts/0    00:00:00 vi redis.conf
　　root     15590     1  0 18:52 ?        00:00:00 redis-server *:7000 [cluster]
　　root     15616 19443  0 18:52 pts/1    00:00:00 grep redis

　　linux-svnfile:/usr/local/cluster #redis-cli -p 7000
　　127.0.0.1:7000>

　　删除slave节点

　　删除master节点
　　linux-svnfile:/usr/local/redis # redis-trib.rb reshard 127.0.0.1:7001
　　How many slots do you want to move (from 1 to 16384)? 5461

　　What is the receiving node>
　　Please enter all the source node>　　Type 'all' to use all the nodes as source nodes for the hash slots.

　　Type 'done' once you entered all the source nodes>　　Source node #1: 6fe9561e605b7ee85e67a2557f7fb641f482afb4
　　Source node #2:done
　　#Do you want to proceed with the proposed reshard plan (yes/no)? yes
　　说明：
　　5461表示要删除master所有的slot数量
　　What is the receiving node ID是指将7000的slot迁移的节点7001的node-id
　　Source node #1是指要删除的master的node-id
　　下面可以看到7000的slot为0，而7001多了4561

　　在删除master节点出现如下面所示的错误，是因为删除master节点之前没有删除master节点的slave节点。

　　上面是在单台机器上做的集群，下面展示两台机器上做集群，其实也很简单。
　　参考之前的环境编译源码到另一台机器
　　在两台机器上编辑配置文件
　　/usr/local/redis # vi redis.conf
　　daemonize yes
　　port 7000
　　cluster-enabled yes
　　cluster-config-file nodes.conf
　　cluster-node-timeout 5000
　　appendonly yes
　　cluster-config-file nodes-7001.conf
　　分别创建目录和文件
　　linux-svnfile:/usr/local/redis # mkdir -p/usr/local/cluster/{7001..7003}
　　localhost:/usr/local/redis # mkdir -p/usr/local/cluster/{8001..8003}
　　linux-svnfile:/usr/local/redis # cpredis.conf ../cluster/7001
　　linux-svnfile:/usr/local/redis # cpredis.conf ../cluster/7002
　　linux-svnfile:/usr/local/redis # cpredis.conf ../cluster/7003
　　localhost:/usr/local/redis # cp redis.conf../cluster/8001
　　localhost:/usr/local/redis # cp redis.conf../cluster/8002
　　localhost:/usr/local/redis # cp redis.conf../cluster/8003
　　修改对应目录的配置文件其中port 和cluster-config-file分别对应各自的目录名，可使用sed命令做修改
　　sed -i "s/7001/7002/g"
　　启动服务