Twemproxy（nutcracker）代理 Redis Cluster 集群

1、环境

服务名称	IP地址	备注
twemproxy-161-130	10.32.161.130	twemproxy (nutcracker)
redis-161-131	10.32.161.131	redis节点
redis-161-132	10.32.161.132	redis节点
redis-161-133	10.32.161.133	redis节点
redis-161-134	10.32.161.134	redis节点
redis-161-135	10.32.161.135	redis节点
redis-161-136	10.32.161.136	redis节点

2、Redis安装及集群创建

参考：https://www.cnblogs.com/a120608yby/p/17167566.html

3、Twemproxy安装及配置

# 下载程序包
wget https://github.com/twitter/twemproxy/releases/download/0.5.0/twemproxy-0.5.0.tar.gz -P /usr/local/src

# 编译安装
cd /usr/local/src
tar xf twemproxy-0.5.0.tar.gz
cd twemproxy-0.5.0
./configure --prefix=/usr/local/twemproxy
make && make install

# 拷贝服务启动文件
cp scripts/nutcracker.init /etc/init.d/nutcracker
chmod +x /etc/init.d/nutcracker

# 配置环境变量
# vim /etc/profile.d/twemproxy.sh
export PATH=$PATH:/usr/local/twemproxy/sbin
# source /etc/profile.d/twemproxy.sh

# 修改配置文件
# mkdir /etc/nutcracker /usr/local/twemproxy/conf -p
# cat /usr/local/twemproxy/conf/nutcracker.yml 
alpha:
  listen: 10.32.161.130:22121
  hash: fnv1a_64
  distribution: ketama
  auto_eject_hosts: true
  redis: true
  redis_auth: password
  server_retry_timeout: 2000
  server_failure_limit: 1
  servers:
   - 10.32.161.131:6379:1
   - 10.32.161.132:6379:1
   - 10.32.161.133:6379:1
   - 10.32.161.134:6379:1
   - 10.32.161.135:6379:1
   - 10.32.161.136:6379:1
# ln -sv /usr/local/twemproxy/conf/nutcracker.yml /etc/nutcracker/nutcracker.yml
# chown -R nobody. /etc/nutcracker /usr/local/twemproxy/

# 启动服务
chkconfig nutcracker on
/etc/init.d/nutcracker start

4、验证

# redis-cli -c -h 10.32.161.130 -p 22121 -a password
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
10.32.161.130:22121> set key1 111
OK
10.32.161.130:22121> set key2 222
-> Redirected to slot [4998] located at 10.32.161.130:6379
OK
10.32.161.130:6379> set key3 333
OK
10.32.161.130:6379> set key4 444
-> Redirected to slot [13120] located at 10.32.161.132:6379
OK
10.32.161.132:6379> set key5 555
-> Redirected to slot [9057] located at 10.32.161.131:6379
OK
10.32.161.131:6379> set key6 666
-> Redirected to slot [4866] located at 10.32.161.130:6379
OK
10.32.161.130:6379> get key3
"333"
10.32.161.130:6379> get key6
"666"
10.32.161.130:6379> get key1
-> Redirected to slot [9189] located at 10.32.161.131:6379
"111"
10.32.161.131:6379> get key2
-> Redirected to slot [4998] located at 10.32.161.130:6379
"222"
10.32.161.130:6379> get key5
-> Redirected to slot [9057] located at 10.32.161.131:6379
"555"
10.32.161.131:6379> get key4
-> Redirected to slot [13120] located at 10.32.161.132:6379
"444"

参考：

https://github.com/twitter/twemproxy