# 下载
$ wget http://download.redis.io/releases/redis-3.0.4.tar.gz
$ tar -zxvf redis-3.0.4.tar.gz
$ cd redis-3.0.4
# 编译
$ make
# 检查依赖， 如果有错误就修复
# 如果遇到错误“Test replication partial resync: ok psync”, 可以忽略或再重复执
# 行几次make test就可以通过了
$ make test
# 安装
$ sudo make install
# 添加开机启动, 会有一些交互提问，按需选择即可
$ sudo utils/install_server.sh
Welcome to the redis service installer
This script will help you easily set up a running redis server
Please select the redis port for this instance: [6379]
Selecting default: 6379
Please select the redis config file name [/etc/redis/6379.conf]
Selected default - /etc/redis/6379.conf
Please select the redis log file name [/var/log/redis_6379.log]
Selected default - /var/log/redis_6379.log
Please select the data directory for this instance [/var/lib/redis/6379]
Selected default - /var/lib/redis/6379
Please select the redis executable path [/usr/local/bin/redis-server]
Selected config:
Port : 6379
Config file : /etc/redis/6379.conf
Log file : /var/log/redis_6379.log
Data dir : /var/lib/redis/6379
Executable : /usr/local/bin/redis-server
Cli Executable : /usr/local/bin/redis-cli
Is this ok? Then press ENTER to go on or Ctrl-C to abort.
Copied /tmp/6379.conf => /etc/init.d/redis_6379
Installing service...
Adding system startup for /etc/init.d/redis_6379 ...
/etc/rc0.d/K20redis_6379 -> ../init.d/redis_6379
/etc/rc1.d/K20redis_6379 -> ../init.d/redis_6379
/etc/rc6.d/K20redis_6379 -> ../init.d/redis_6379
/etc/rc2.d/S20redis_6379 -> ../init.d/redis_6379
/etc/rc3.d/S20redis_6379 -> ../init.d/redis_6379
/etc/rc4.d/S20redis_6379 -> ../init.d/redis_6379
/etc/rc5.d/S20redis_6379 -> ../init.d/redis_6379
Success!
Starting Redis server...
Installation successful!
# 因为要搭建单机集群，重复执行上面的命令，同时设置6380, 6381
# 完成后，可以看到如下文件
$ ls /etc/init.d/redis_*
/etc/init.d/redis_6379 /etc/init.d/redis_6380 /etc/init.d/redis_6381
$ ls /etc/redis/
6379.conf 6380.conf 6381.conf
# 开启集群
$ sudo sed -i 's/# cluster-enabled yes/cluster-enabled yes/' /etc/redis/*.conf
# 同时去掉/etc/redis/*.conf 文件的`cluster-config-file` 的注释，并分别设置为
# cluster-config-file /etc/redis/nodes-6379.conf
# cluster-config-file /etc/redis/nodes-6380.conf
# cluster-config-file /etc/redis/nodes-6381.conf
# 重启redis服务
$ ps -ef |grep redis
root 31033 1 0 00:18 ? 00:00:00 /usr/local/bin/redis-server *:6379 [cluster]
root 31072 1 0 00:18 ? 00:00:00 /usr/local/bin/redis-server *:6380 [cluster]
root 31111 1 0 00:18 ? 00:00:00 /usr/local/bin/redis-server *:6381 [cluster]
# 安装redis client需要的依赖
$ sudo apt-get install ruby
$ sudo gem install redis
# 查看可用的命令
$ src/redis-trib.rb help
Usage: redis-trib <command> <options> <arguments ...>
create host1:port1 ... hostN:portN
--replicas <arg>
check host:port
fix host:port
reshard host:port
--from <arg>
--to <arg>
--slots <arg>
--yes
add-node new_host:new_port existing_host:existing_port
--slave
--master-id <arg>
del-node host:port node_id
set-timeout host:port milliseconds
call host:port command arg arg .. arg
import host:port
--from <arg>
help (show this help)
For check, fix, reshard, del-node, set-timeout you can specify the host and port of any working node in the cluster.
# 创建集群
$ sudo src/redis-trib.rb create 127.0.0.1:6379 127.0.0.1:6380 127.0.0.1:6381
>>> Creating cluster
Connecting to node 127.0.0.1:6379: OK
Connecting to node 127.0.0.1:6380: OK
Connecting to node 127.0.0.1:6381: OK
>>> Performing hash slots allocation on 3 nodes...
Using 3 masters:
127.0.0.1:6379
127.0.0.1:6380
127.0.0.1:6381
M: 50eee84811854ce707bb25ce05f1688eafa46c8d 127.0.0.1:6379
slots:0-5460 (5461 slots) master
M: 3cdc94999a66c325dd91ca4af70fa9a9fe1bc623 127.0.0.1:6380
slots:5461-10922 (5462 slots) master
M: 059fd2e13499b22aedfa0f0ad3707fe7534d96db 127.0.0.1:6381
slots:10923-16383 (5461 slots) master
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 127.0.0.1:6379)
M: 50eee84811854ce707bb25ce05f1688eafa46c8d 127.0.0.1:6379
slots:0-5460 (5461 slots) master
M: 3cdc94999a66c325dd91ca4af70fa9a9fe1bc623 127.0.0.1:6380
slots:5461-10922 (5462 slots) master
M: 059fd2e13499b22aedfa0f0ad3707fe7534d96db 127.0.0.1:6381
slots:10923-16383 (5461 slots) master
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
# 也可以设置主从, 但是需要注意，如果设置了replicas，则需要更多的结点
# --replicas 1 需要6个结点
# --replicas 2 需要12个结点
$ sudo src/redis-trib.rb create --replicas 1 127.0.0.1:6379 127.0.0.1:6380 127.0.0.1:6381 ip:port....
# 检查集群状态
$ sudo src/redis-trib.rb check 127.0.0.1:6379
Connecting to node 127.0.0.1:6379: OK
Connecting to node 127.0.0.1:6380: OK
Connecting to node 127.0.0.1:6381: OK
>>> Performing Cluster Check (using node 127.0.0.1:6379)
M: 50eee84811854ce707bb25ce05f1688eafa46c8d 127.0.0.1:6379
slots:0-5460 (5461 slots) master
0 additional replica(s)
M: 3cdc94999a66c325dd91ca4af70fa9a9fe1bc623 127.0.0.1:6380
slots:5461-10922 (5462 slots) master
0 additional replica(s)
M: 059fd2e13499b22aedfa0f0ad3707fe7534d96db 127.0.0.1:6381
slots:10923-16383 (5461 slots) master
0 additional replica(s)
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
# 使用了集群之后，不能像以前一样使用命令行客户端了, 需要加参数`-c`
$ redis-cli
127.0.0.1:6379> ping
PONG
127.0.0.1:6379> set a b
(error) MOVED 15495 127.0.0.1:6381 # 设置失败
$ redis-cli -c
127.0.0.1:6379> set a b
-> Redirected to slot [15495] located at 127.0.0.1:6381
OK
# 同理python redis模块也是不能直接用集群模式了，需要替换成支持redis cluster的python模块
# 完毕