两台服务器redis 3.0.5分布式集群安装部署
目前redis支持的cluster特性:
1):节点自动发现
2):slave->master 选举,集群容错
3):Hot resharding:在线分片
4):集群管理:cluster xxx
5):基于配置(nodes-port.conf)的集群管理
6):ASK 转向/MOVED 转向机制.
一、redis集群安装
两台电脑： 192.168.0.60 192.168.0.219
1.分别在两台电脑下载redis(redis-3.0.5)
wget http://download.redis.io/releases/redis-3.0.5.tar.gz
2. 分别在两台电脑解压，编译
tar -zxvf redis-3.0.5.tar.gz
mv redis-3.0.5 /usr/local/redis3.0
cd /usr/local/redis3.0
make
make install
3. 分别在两台电脑创建集群需要的目录
1）192.168.0.60
cd /etc/redis
mkdir 9000 9001 9002
2) 192.168.0.219
cd /etc/redis
mkdir 9003 9004 9005
4 . 修改配置文件
cp /usr/local/redis3.0/redis.conf /etc/redis/9000
cd /etc/redis/9000
mv redis.conf 9000.conf
vim 9000.conf
## 修改配置文件中的下面选项
port 9000
daemonize yes
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
bind 192.168.0.60
#若要设置密码，需要把requirepass前面的#号去掉，并设置它后面的密码以及masterauth
##修改完9000.conf配置文件中的这些配置后把这个配置文件分别拷贝到9001/9002/9003/9004/9005目录下面
cp /etc/redis/9000.conf /etc/redis/9001
cp /etc/redis/9000.conf /etc/redis/9002
scp /etc/redis/9000.conf root@192.168.0.219:/etc/redis/9003
scp /etc/redis/9000.conf root@192.168.0.219:/etc/redis/9004
scp /etc/redis/9000.conf root@192.168.0.219:/etc/redis/9005
#注意：拷贝完成后要修改9001/9002/9003/9004/9005下面redis配置文件中的port分别对应的文件夹的名称和bind参数(需要更新为物理接口IP 0.60或0.219）
同时需要在两台服务器的防火墙放开对应端口
5. 分别启动这6个redis实例
1) 192.168.0.60上
cd /etc/redis/9000
redis-server 9000.conf
cd /etc/redis/9001
redis-server 9001.conf
cd /etc/redis/9002
redis-server 9002.conf
2) 192.168.0.60上
cd /etc/redis/9003
redis-server 9003.conf
cd /etc/redis/9004
redis-server 9004.conf
cd /etc/redis/9005
redis-server 9005.conf
#启动之后用ps -ef | grep redis查看redis的启动情况
如下则说明成功
6.升级ruby安装gem
#yum install ruby ruby-devel rubygems rpm-build
检查ruby版本
#ruby -v
ruby 1.8.7 (2013-06-27 patchlevel 374) [x86_64-linux]
是否安装rubygems
#rpm -qa | grep ruby
ruby-1.8.7.374-4.el6_6.x86_64
rubygems-1.3.7-5.el6.noarch
ruby-rdoc-1.8.7.374-4.el6_6.x86_64
ruby-devel-1.8.7.374-4.el6_6.x86_64
ruby-libs-1.8.7.374-4.el6_6.x86_64
ruby-irb-1.8.7.374-4.el6_6.x86_64
7. gem安装redis ruby接口
gem install redis
若报错，则可手动下载
wget http://rubygems.org/gems/redis/versions/3.0.0
gem install -l redis-3.0.0
8.执行redis的创建集群命令创建集群
# redis-trib.rd的create子命令创建
# --replicas则指定了为Redis Cluster中的每个Master节点配备了几个Slave节点
# 节点角色由顺序决定，先master之后是slave
创建方式
[root@mysqlslave src]#cd /usr/local/redis3.0/src
[root@mysqlslave src]# ./redis-trib.rb create --replicas 1 192.168.0.60:9000 192.168.0.60:9001 192.168.0.60:9002 192.168.0.219:9003 192.168.0.219:9004 192.168.0.219:9005
>>> Creating cluster
Connecting to node 192.168.0.60:9000: OK
Connecting to node 192.168.0.60:9001: OK
Connecting to node 192.168.0.60:9002: OK
Connecting to node 192.168.0.219:9003: OK
Connecting to node 192.168.0.219:9004: OK
Connecting to node 192.168.0.219:9005: OK
>>> Performing hash slots allocation on 6 nodes...
Using 3 masters:
192.168.0.60:9000
192.168.0.219:9003
192.168.0.60:9001
Adding replica 192.168.0.219:9004 to 192.168.0.60:9000
Adding replica 192.168.0.60:9002 to 192.168.0.219:9003
Adding replica 192.168.0.219:9005 to 192.168.0.60:9001
M: d7728bfbd286f9387911fdb459fbb580f7189d80 192.168.0.60:9000
slots:0-5460 (5461 slots) master
M: 9cd3cfcadd4f8f3c3aa9cc5fce21f58fd9d75016 192.168.0.60:9001
slots:10923-16383 (5461 slots) master
S: 169353ccf9e9162819a937ec7fe248e5357f3d30 192.168.0.60:9002
replicates 33857a90b7c53dfc30f3e5a2c66e4b220154a972
M: 33857a90b7c53dfc30f3e5a2c66e4b220154a972 192.168.0.219:9003
slots:5461-10922 (5462 slots) master
S: 78b95af1ff6b6d1873056285274abf472dc82119 192.168.0.219:9004
replicates d7728bfbd286f9387911fdb459fbb580f7189d80
S: 87b88def2e17278487b53482a51b46279fdd2d5b 192.168.0.219:9005
replicates 9cd3cfcadd4f8f3c3aa9cc5fce21f58fd9d75016
Can I set the above configuration? (type 'yes' to accept): yes
>>> Nodes configuration updated
>>> Assign a different config epoch to each node
>>> Sending CLUSTER MEET messages to join the cluster
Waiting for the cluster to join...
>>> Performing Cluster Check (using node 192.168.0.60:9000)
M: d7728bfbd286f9387911fdb459fbb580f7189d80 192.168.0.60:9000
slots:0-5460 (5461 slots) master
M: 9cd3cfcadd4f8f3c3aa9cc5fce21f58fd9d75016 192.168.0.60:9001
slots:10923-16383 (5461 slots) master
M: 169353ccf9e9162819a937ec7fe248e5357f3d30 192.168.0.60:9002
slots: (0 slots) master
replicates 33857a90b7c53dfc30f3e5a2c66e4b220154a972
M: 33857a90b7c53dfc30f3e5a2c66e4b220154a972 192.168.0.219:9003
slots:5461-10922 (5462 slots) master
M: 78b95af1ff6b6d1873056285274abf472dc82119 192.168.0.219:9004
slots: (0 slots) master
replicates d7728bfbd286f9387911fdb459fbb580f7189d80
M: 87b88def2e17278487b53482a51b46279fdd2d5b 192.168.0.219:9005
slots: (0 slots) master
replicates 9cd3cfcadd4f8f3c3aa9cc5fce21f58fd9d75016
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
二、测试篇
1）检查集群状态
[root@mysqlslave src]# ./redis-trib.rb check 192.168.0.60:9000
Connecting to node 192.168.0.60:9000: OK
Connecting to node 192.168.0.60:9002: OK
Connecting to node 192.168.0.219:9004: OK
Connecting to node 192.168.0.219:9005: OK
Connecting to node 192.168.0.60:9001: OK
Connecting to node 192.168.0.219:9003: OK
>>> Performing Cluster Check (using node 192.168.0.60:9000)
M: d7728bfbd286f9387911fdb459fbb580f7189d80 192.168.0.60:9000
slots:0-5460 (5461 slots) master
1 additional replica(s)
S: 169353ccf9e9162819a937ec7fe248e5357f3d30 192.168.0.60:9002
slots: (0 slots) slave
replicates 33857a90b7c53dfc30f3e5a2c66e4b220154a972
S: 78b95af1ff6b6d1873056285274abf472dc82119 192.168.0.219:9004
slots: (0 slots) slave
replicates d7728bfbd286f9387911fdb459fbb580f7189d80
S: 87b88def2e17278487b53482a51b46279fdd2d5b 192.168.0.219:9005
slots: (0 slots) slave
replicates 9cd3cfcadd4f8f3c3aa9cc5fce21f58fd9d75016
M: 9cd3cfcadd4f8f3c3aa9cc5fce21f58fd9d75016 192.168.0.60:9001
slots:10923-16383 (5461 slots) master
1 additional replica(s)
M: 33857a90b7c53dfc30f3e5a2c66e4b220154a972 192.168.0.219:9003
slots:5461-10922 (5462 slots) master
1 additional replica(s)
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
2）测试redis集群
[root@mysqlslave src]# redis-cli -c -p 9000 -h 192.168.0.60
192.168.0.60:9000> set test ljp20151215
-> Redirected to slot [6918] located at 192.168.0.219:9003
OK
192.168.0.219:9003> get test //直接转到0.219:9003
"ljp20151215" //可以取到值
192.168.0.219:9003>
我们也可以到另一台电脑0.219上去。连接到0.219的9005. 可以取到test的值。
