一.借用网上codis架构图（https://github.com/CodisLabs/codis）
各组件作用说明
1.codis-proxy 相当于redis，是底层codis-server集群代理、
2.codis-group 是一个虚拟的节点机制通过槽位映射机制实现proxy与server的映射（一个组有一个master和多个slave组成，默认1024个槽位，redis cluster默认16384个槽位，不同的槽位内容放在不同group,通过zk查询key记录位置）
3.codis-fe 集群管理界面
4.codis-dashboard 集群管理中心
二. 环境搭建配置
系统centos7.1 64位系统
环境包
jdk1.8.0.91
机器分配 |
节点应用 |
codis节点 |
192.168.10.5 |
zk1 codis-proxy codis-fe codis-dashboard |
redis-6379 6380 6381 6382 |
192.168.10.6 |
zk2 codis-proxy |
redis-6379 6380 6381 6382 |
192.168.10.7 |
zk3 |
redis-6379 6380 6381 6382 |
zk集群简要配置（需要安装jdk--步骤略）
[[email protected] ~]# sed '/^$/ d;/^#/ d' /usr/local/zookeeper/conf/zk1.cfg
tickTime=2000
initLimit=10
syncLimit=5
dataDir=/usr/local/zookeeper/data
clientPort=2181
server.1=192.168.10.5:2888:3888
server.2=192.168.10.6:2888:3888
server.3=192.168.10.7:2888:3888
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echo 1 > /usr/local/zookeeper/data/myid
codis02 上操作类似 echo 2 > /usr/local/zookeeper/data/myid
codis03 上操作类似 echo 3 > /usr/local/zookeeper/data/myid
启动zk集群，检测zk状态是否正常
go环境编译安装
[[email protected] ~]# tar zxvf go1.7.3.linux-amd64.tar.gz
[[email protected] ~]# mv go /usr/local
[[email protected] ~]# mkdir /usr/local/codis
配置环境变量 vi /etc/profile
export PATH=$PATH:/usr/local/go/bin
export GOROOT=/usr/local/go
export GOPATH=/usr/local/codis
path=$PATH:$HOME/bin:$GOROOT/bin:$GOPATH/bin
source /etc/profile
验证是否生效
[[email protected] ~]# go version
go version go1.7.3 linux/amd64
[[email protected] ~]# echo $GOPATH
/usr/local/codis
codis安装
mkdir -p $GOPATH/src/github.com/CodisLabs************************此目录不能为别的名
[[email protected] ~]# cd /usr/local/codis/src/github.com/CodisLabs/
[[email protected] ~]# git clone https://github.com/CodisLabs/codis.git -b release3.2
进行编译 cd /usr/local/codis/src/github.com/CodisLabs/codis
make ---------执行全部指令后，会在 bin 文件夹内生成 codis-proxy、codis-server三个可执行文件
修改配置信息
启动方式有两种
[[email protected] codis]# sed '/^#/ d;/^$/ d' config/dashboard.toml (修改了红字信息)
coordinator_name = "zookeeper"
coordinator_addr = "192.168.10.5:2181,192.168.10.6:2181,192.168.10.7:2181"
product_name = "codis-protal"
product_auth = ""
admin_addr = "0.0.0.0:18080"
migration_method = "semi-async"
migration_parallel_slots = 100
migration_async_maxbulks = 200
migration_async_maxbytes = "32mb"
migration_async_numkeys = 500
migration_timeout = "30s"
sentinel_client_timeout = "10s"
sentinel_quorum = 2
sentinel_parallel_syncs = 1
sentinel_down_after = "30s"
sentinel_failover_timeout = "5m"
sentinel_notification_script = ""
sentinel_client_reconfig_script = ""
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[[email protected] codis]# sed '/^#/ d;/^$/ d' config/proxy.toml （修改了红字信息）
product_name = "codis-protal"
product_auth = ""
session_auth = ""
admin_addr = "0.0.0.0:11080"
proto_type = "tcp4"
proxy_addr = "0.0.0.0:19000"
jodis_name = "zookeeper"
jodis_addr = "192.168.10.5:2181,192.168.10.6:2181,192.168.10.7:2181"
jodis_auth = ""
jodis_timeout = "20s"
jodis_compatible = true
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新建4个codis-server节点（redis配置修改红字部分）
[[email protected] opt]# sed '/^#/ d;/^$/ d' /opt/redis-6379/redis.conf
protected-mode no
port 6379
tcp-backlog 511
timeout 0
tcp-keepalive 300
daemonize yes
supervised no
pidfile "/opt/redis-6379/redis_6379.pid"
loglevel notice
logfile "/opt/redis-6379/redis_6379.log"
databases 16
save 900 1
save 300 10
save 60 10000
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename "dump_6379.rdb"
dir "/opt/redis-6379"
slave-serve-stale-data yes
slave-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-disable-tcp-nodelay no
slave-priority 100
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服务启动【自带脚本方式】
cd $GOPATH/src/github.com/CodisLabs/codis/admin
./admin/codis-dashboard-admin.sh start 启动CODIS-DASHBOARD 外部存储
./admin/codis-proxy-admin.sh start 启动CODIS-PROXY 并加入CODIS-DASHBOARD管理
./admin/codis-server-admin.sh start 启动CODIS-SERVER
./admin/codis-fe-admin.sh start 启动CODIS-FE，可以通过127.0.0.1:9090访问管理界面
【手动运行命令后台运行】
./bin/codis-dashboard --ncpu=1 --config=config/dashboard.toml --log=dashboard.log --log-level=WARN &
./bin/codis-proxy --ncpu=1 --config=config/proxy.toml --log=proxy.log --log-level=WARN &
./bin/codis-fe --ncpu=1 --log=fe.log --log-level=WARN --zookeeper=192.168.10.5:2181 --listen=192.168.10.5:8090 & --管理页面端口
./bin/codis-server /opt/redis-6379/redis.conf
./bin/codis-server /opt/redis-6380/redis.conf
./bin/codis-server /opt/redis-6381/redis.conf
./bin/codis-server /opt/redis-6382/redis.conf
三.通过fe管理页面管理codis机器
浏览器访问http://192.168.10.5:8090进入管理页面
添加proxy代理
先添加4个分组，每个256个槽位，然后把codis-server加入到分组，组成一组两从
测试codis集群功能。停掉192.168.10.5:19000 这个proxy节点。检测工作是否正常
tag: 在10.5的节点上写入key,停掉10.5工作节点，在10.6上查询key
[[email protected] codis]# ./bin/redis-cli -h 192.168.10.5 -p 19000
192.168.10.5:19000> set fctee hello-world
OK
[[email protected] codis]# ./bin/redis-cli -h 192.168.10.6 -p 19000
192.168.10.6:19000> get fctee
"hello-world"
结果工作正常
tag:测试redis-key值写入，分配均衡
#!/bin/bash
for ((i=0;i<20000;i++))
do
echo -en "helloworld" | redis-cli -h 192.168.10.5 -p 19000 -x set name$i >>redis.log
done
------------参考链接