Redis安装与集群部署

安装

当前安装环境为：
- 系统：Ubuntu 14.04.4 LTS
- 单节：虚拟机单节点
- 地址：192.168.0.18
- 硬件：1核1G

apt-get包管理安装

安装

apt-get install redis-server

远程访问

使用包管理工具安装的redis默认是仅本机可访问，不支持远程访问的。所以需要修改redis的配置文件，取消绑定ip。

vi /etc/redis/redis.conf# 注释掉: bind 127.0.0.1这一行

源码编译安装

安装

源码编译安装其实只要完成编译工作，安装也就完成了。在编译过程中首先发现机器没有安装make工具，等把make装好后发现cc命令执行失败，所以又安装了gcc。等这些条件都准备好后，报了一个文件缺失的错误，网上查了一下，发现这是一个bug，好的是也给出了解决方案，这才顺利的完成编译过程。

# 源码下载wget http://download.redis.io/releases/redis-3.0.6.tar.gz# 解压tar xzf redis-3.0.6.tar.gz# 编译cd redis-3.0.6make MALLOC=libc# 直接执行make有可能会报错：fatal error: jemalloc/jemalloc.h# 无make模块的时候：apt-get install make# cc命令执行失败的时候：apt-get install gcc

启动

进入src目录，直接执行redis-server脚本即可以redis默认参数启动。另外也可以编写自定义配置文件，然后根据配置启动redis。

cd src./redis-server 或者 ./redis-server [configPath]

配置集群

环境准备

redis3.0以后开始支持集群，并提供了相关工具。集群工具位于源码src目录下的redis-trib.rb，该脚本是使用ruby书写的，所以当前环境还需要安装ruby。

安装ruby

apt-get install rubygem install redis

修改配置文件

默认配置文件仅能开启一个单节点redis，所以我们需要对配置文件做一定的修改。一下是配置集群的必须修改项。

cluster-enabled yescluster-config-file nodes.confcluster-node-timeout 5000appendonly yes

本次安装因为是单机多节点redis集群，而且每个节点都以守护进程模式启动。所以还需要修改pid文件和端口，已经启动模式。

daemonize yespidfile /var/run/redis0.pidport 6380

启动redis

本次集群计划6个redis实例：3个主节点，3个复制节点。端口分别位：6380，6381，6382，6383，6384，6385。

./redis-server ../shards/6380/shard.conf./redis-server ../shards/6381/shard.conf./redis-server ../shards/6382/shard.conf./redis-server ../shards/6383/shard.conf./redis-server ../shards/6384/shard.conf./redis-server ../shards/6385/shard.conf

组建集群

root@ubuntu:/opt/sbin/redis-3.0.6/src# ./redis-trib.rb create --replicas 1 127.0.0.1:6380 127.0.0.1:6381 127.0.0.1:6382 127.0.0.1:6383 127.0.0.1:6384 127.0.0.1:6385./redis-trib.rb:1573: warning: key "threshold" is duplicated and overwritten on line 1573>>> Creating cluster>>> Performing hash slots allocation on 6 nodes...Using 3 masters:127.0.0.1:6380127.0.0.1:6381127.0.0.1:6382Adding replica 127.0.0.1:6383 to 127.0.0.1:6380Adding replica 127.0.0.1:6384 to 127.0.0.1:6381Adding replica 127.0.0.1:6385 to 127.0.0.1:6382M: 1b85ea9b2e569906d6d6fb99ef59434690bb5314 127.0.0.1:6380   slots:0-5460 (5461 slots) masterM: 861172b6acc35c101eb349cf550a5f270b3b4260 127.0.0.1:6381   slots:5461-10922 (5462 slots) masterM: ac7155ff194714b67597c848d187d01c002fac91 127.0.0.1:6382   slots:10923-16383 (5461 slots) masterS: 8f1b32c678e136c2d5abba75c6b85d6c001ae297 127.0.0.1:6383   replicates 1b85ea9b2e569906d6d6fb99ef59434690bb5314S: 34ac1fc6237f84d7be105da86d7fc305757a8ae3 127.0.0.1:6384   replicates 861172b6acc35c101eb349cf550a5f270b3b4260S: 2b5e12e4ace97e8964abc5b596b065058f879086 127.0.0.1:6385   replicates ac7155ff194714b67597c848d187d01c002fac91Can 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 clusterWaiting for the cluster to join...>>> Performing Cluster Check (using node 127.0.0.1:6380)M: 1b85ea9b2e569906d6d6fb99ef59434690bb5314 127.0.0.1:6380   slots:0-5460 (5461 slots) masterM: 861172b6acc35c101eb349cf550a5f270b3b4260 127.0.0.1:6381   slots:5461-10922 (5462 slots) masterM: ac7155ff194714b67597c848d187d01c002fac91 127.0.0.1:6382   slots:10923-16383 (5461 slots) masterM: 8f1b32c678e136c2d5abba75c6b85d6c001ae297 127.0.0.1:6383   slots: (0 slots) master   replicates 1b85ea9b2e569906d6d6fb99ef59434690bb5314M: 34ac1fc6237f84d7be105da86d7fc305757a8ae3 127.0.0.1:6384   slots: (0 slots) master   replicates 861172b6acc35c101eb349cf550a5f270b3b4260M: 2b5e12e4ace97e8964abc5b596b065058f879086 127.0.0.1:6385   slots: (0 slots) master   replicates ac7155ff194714b67597c848d187d01c002fac91[OK] All nodes agree about slots configuration.>>> Check for open slots...>>> Check slots coverage...[OK] All 16384 slots covered.

测试集群

存取测试

root@ubuntu:~# redis-cli -c -h 192.168.0.18 -p 6380192.168.0.18:6380> set name kim-> Redirected to slot [5798] located at 127.0.0.1:6381OK127.0.0.1:6381> set bllow 192.168.0.1-> Redirected to slot [12497] located at 127.0.0.1:6382OK127.0.0.1:6382> set cat tom-> Redirected to slot [1075] located at 127.0.0.1:6380OK